//This Js file is used for defining right side menus of html pages located at root. // Description of all files presents in shopping page. var desc = new Array(55); desc[0] = "For a Cement Plant, life cycle is an important consideration for plant design. It is customary to expect the plant to be operative for 30 years or more with maximum design capacity utilisation for clinker production. Estimation of raw material deposits required, can be done in 2 steps as elaborated below...."; desc[1] = "Excavator is used in the quarry to raise the quarried material to dumpers for furthe transportation away from the quarry face.Depending upon the requirement of the plant find the capacity required for Excavator."; desc[2] = "For transporting quarried stone to crushing plant by dumpers, calculate number of dumpers, vol. capacities, hopper capacity for crusher."; desc[3] = "To calculate the capacity of crusher following steps can be followed 1) Determine weekly requirement of crushed Limestone material 2) Determine number of days Crusher has to run per week 3) Determine number of hours the crusher system has to run per day"; desc[4] = "A hammer crusher of given rotor diameter of rotating hammers and the length of rotor is required to crush stones. Bulk density of stone is given. Find the throughput of crusher and the power demand."; desc[5] = "An existing crusher which crushes rocks to reduce volume-surface mean diameter of feed to a smaller dia. product.These data being known from the operations log of the crusher, also the corresponding output and power requirement figures are known. Find the new power requirement for a reduced capacity at a different product dia."; desc[6] = "An existing crusher crushes rocks to reduce volume-surface mean diameter of feed to a smaller dia. product.These data being known from the operations log of the crusher, also the corresponding output and power requirement figures are known. " + "It is desired to use this crusher to crush a different / changed material at the same throughput as the original material.The feed size is also to be retained as that of the original material. " + "Product size of the new material is defined as also its crushing strength. " + "Find the power requirement for crushing the new material."; desc[7] = "A roll crusher of given diameters of rolls are set at a certain distance apart to achieve a certain nip angle.Find the maximum size of particle that can be fed. " + "Also , knowing the width of the working face of the rolls, and density of feed material , find the throughput when the crusher runs at a certain speed. Consider real throughput as a percentage of theoretical throughput."; desc[8] = "A double rotor hammer crusher of given rotor diameter of rotating hammers and the length of rotor is required to crush stones.No. of hammers in each rotor and weight of individual hammer are known.Rotor speed and transmission efficiency of power are also given Bulk density of stone is given. Find the throughput of crusher and the power demand."; desc[9] = "To calculate the capacity of stockpile for limestone based on the given data about kiln design capacity as well as limestone percentage in rawmix. It's also necessary to find the capacity of longitudinal stacker for which crusher capacity is available."; desc[10] = "Use this worksheet to calculate stock position of various bulk materials in the plant, based on actual measurements of longitudinal stockpiles having trapizoidal cross section.Calculation involves determination of volume of material stockpiles based on geometric dimensions as measured. " + "Consider appropriate bulk densities and arrive at the stok of the material by multiplication."; desc[11] = "This is worksheet can be used to calculate various stocks of bulk material in the plant based on actual measurements for longitudinal stockpiles with triangular cross section.Calculation involves determination of volume of material stockpiles based on geometric dimensions as measured. " + "Consider appropriate bulk densities and arrive at the stock position."; desc[12] = "This is worksheet can be used to calculate various stocks of bulk material in the plant based on actual measurements for kidney shaped windrows stockpiles with triangular cross section.Calculation involves determination of volume of material stockpiles based on geometric dimensions as measured. " + "Consider appropriate bulk densities and arrive at the stock of the material ."; desc[13] = "Use this worksheet to calculate Bond's Work Index based on results from Bond mill on dry basis.Find the work index according to Bond based on results from Bond mill"; desc[14] = "Use this worksheet to calculate power at ball mill shaft for dry grinding of raw material based on Bond's Work Index basis.Calculate grindability of the raw material at close circuit ball mill shaft based on the Bond's work index value as given below."; desc[15] = "Use this worksheet to calculate capacity of raw mill and auxiliaries for a certain capacity.Capacity of Grinding Mill and capacity of various transport equipment can be calculated with following steps."; desc[16] = "Here you can estimate the total moisture to be evaporated from moist feed materials in dryer . Drying can be carried out in a separate dryer or in the grinding mill itself. First estimate total rate of moisture input through the components of the raw feed to the mill. determine the average moisture in feed. Based on the mill output, and residual moisture, calculate the total moisture to be evaporated."; desc[17] = "Here you can estimate the requirement of hot gases for drying of material in a raw grinding ball mill. Drying can be carried out in a separate dryer or in the grinding mill itself. First estimate total rate of moisture input through the components of the raw feed to the mill. determine the average moisture in feed.Based on the mill output, and residual moisture, calculate the total moisture to be evaporated. " + "Calculate, hot gases required for the drying of the feed moisture in the raw material while grinding in close circuit ball mill as per given data below."; desc[18] = "In this topic we describe the method of calculating the ball mill percentage filling as per measurement of compartment empty height.Based on measured values of empty heights of grinding media filling inside mill compartments calculate the mill filling degree"; desc[19] = "Use this worksheet to find the theoretical ball size for ball mills as per Bond's formula and other formulae.For the given input data, calculate theoretical ball size based on various formula."; desc[20] = "Use this worksheet to find the specific heat of raw material as a function of temperature.For the given input data, calculate sp. heat of raw material"; desc[21] = "Use this worksheet to find the specific power consumption of a close circuit ball mill based on its operating parameters.For the given input data, calculate sp. power consumption of the ball mill at shaft at 12% R on 90microns"; desc[22] = "When a ball mill is already in operation, we know about the Bond Index for the material from actual operational parameters. This work sheet allows you to calculate output at different fineness or even vary feed size To apply Bond's Work Index, it is necessary to know the fineness of feed and product materials in terms of size ,through which 80% of the materials pass. For example, feed material with size distribution from 0 to 30mm, may have 80% cut size at 17mm. In other words, 80% of the material will be below 17mm size. " + "Find the power required at shaft for grinding in close circuit a material whose Bond Index is known and also given are the new output and feed and product sizes."; desc[23] = "For a given mill available power draw corresponding to optimised operation is known. Find the specific power required for grinding to new fineness and the new output based on the available power."; desc[24] = "To calculate the separator circulation factor and the separator efficiency of dynamic air separator for given data from operating ball mill plant in close circuit operation."; desc[25] = "In this topic we describe the method of calculating the average piece weight of grinding media.For given loading data of a ball mill , calculate average weight of each piece of ball and its surface area."; desc[26] = "Use this worksheet to calculate critical speed of a ball mill and ball charge. A ball mill of given diameter is desired to be loaded upto certain filling degree.Calculate the critical speed of the mill.Also calculate the ball charge."; desc[27] = "Use this worksheet to calculate requirement of power at shaft of a vertical roller mill for grinding raw material.Actual sizing of the Vertical Roller Mill is based on specific design and models of machinery designers. We provide below the basic calculation of power requirement at shaft based on the grindability and capacity requirement ."; desc[28] = "In raw grinding mills, moisture in feed material is dried by allowing hot gases to pass through and also by adding a drying chamber.. In such a case the radiation loss is high compared to mills where no hot gas is passed through for drying .To calculate radiation loss from raw grinding mill for the purposes of heat balance, consider maximum radiation loss. This enables automatic build up of safety margin."; desc[29] = "In a raw grinding mill measurement is carried out at inlet (point 1) and outlet (point 2).Gas flow rate at inlet is measured and gas analysis is done to find oxygen and carbon dioxide content at both points."; desc[30] = "Use this worksheet to calculate possible use of emergency cum rain water tank, on top of preheater tower, for spray on material bed of vertical raw grinding mill. Investigate the development of pressure at the nozzle."; desc[31] = "Use this worksheet to calculate retention time of material in a two compartment open circuit raw grinding ball mill. \n A two compartment o/c ball mill is equipped with an adjustable double diaphragm and an end discharge diaphragm. Mill is filled with steel balls in both compartments with specified filling degree. It is assumed that the steel balls are new and spherical (without deformation)."; desc[32] = "For a sample of ground material, its sieve analysis shows the size of sieve in square opening (e.g. micron square) through which 63.2% material passes. From experience of similar ground material, generated through similar class of grinding mills, the slope of the particle size distribution line in a RRBS diagram is known. We want to find , without using special graph paper for RRBS diagrams, the fraction of sample that would pass through a specified sieve size."; desc[33] = "In a variation of the above problem, two results from sieve analysis of a particular ground material sample is known. Size in sq. microns of sieve through which 63.2% fines pass is also known. We would like to predict the slope of the particle size distribution of the material , when plotted in a Rosin-Rammler diagram and there after predict the fraction of material that would pass through any other specified sieve size."; desc[34] = "In another variation of the problem, two results from sieve analysis of a particular ground material sample is known. We would like to predict the slope of the particle size distribution of the material , when plotted in a Rosin-Rammler diagram and there after predict the fraction of material that would pass through any other specified sieve size. Also find the size in sq. microns of sieve through which 63.2% fines pass."; desc[35] = "Particle size analysis of a sample of ground powder material is carried out by sieve analysis"; desc[36] = "Use this worksheet to calculate auxiliary drive power rating for ball mill for raw grinding. \n A ball mill has been provided with auxiliary drive motor to assist start up situation. Main drive rating is known already. Find the rating of the auxiliary drive."; desc[37] = "Wear of grinding media in ball mills results in reduction of grinding media charge in the mills. As a result, filling degree in the mill goes down affecting the mill performance. The calculation here is aimed at finding out the make up charge required to be added to bring the mill loading to desired level.The procedure involves first finding out the empty height of the mill in a compartment .Then calculate the percentage filling from geometry of the compartment. Calculate the charge volume as per measurement and as per desired filling level. The difference gives the make up charge required to be added to the compartment. Same procedure can be adopted for other compartments."; desc[38] = "Wear of grinding media in ball mills results in reduction of grinding media charge in the mills. As a result, filling degree in the mill goes down affecting the mill performance. The calculation here is aimed at finding out the wear rate of grinding media based on mill output and reduction in filling degree. \n The procedure involves first finding out the empty height of the mill in a compartment .Then calculate the percentage filling from geometry of the compartment. Calculate the charge volume as per measurement and as per original filling level. From the difference find the reduction in charge in the compartment. Find the actual mill production since original filling. Ratio of reduction in charge to the mill production gives wear rate. Same procedure can be adopted for other compartments."; desc[39] = "Use this worksheet to calculate the maximum quantity of mill exit gases,( under drying grinding operation) that can be recirculated without exceeding specified dew point temperature.A mill, operating in drying grinding mode, is used to dry and grind the raw material in a vertical roller mill. The mill receives hot gas from a hot gas source for the purposes of drying. A part of the mill exit gas is recirculated to make-up for the total quantity of mill air required or lifting the ground material."; desc[40] = "Many times cement production can be enhanced by grinding coarser than originally contemplated or by adding pozzolanic material. Hence, it is of great importance to foresee such possibilities at design stage and design the capacities for maximum anticipated capacity of the Mill \n Use this worksheet to calculate capacities of Cement Transport and Silo and Auxiliary Equipment ."; desc[41] = "In a typical situation rotary electronic packing machines are installed for online filling and weighing of cement bags. The weighing accuracy is normally guaranteed by the supplier over 20 bags. Following calculation establishes a methodology to evaluate average loss the plant is likely to suffer due to average inaccuracy of measurement. For given set of data calculate the effect of weighing in accuracy of packing m/c resulting into financial losses "; desc[42] = "The Barometric pressure at site based on the altitude above mean sea level"; desc[43] = "This worksheet can be used to calculate capacity requirements of various equipment in the coal grinding and preparation section. \n For the given set of data , calculate capacities of coal mill, raw coal hopper and capacity of coal stockpile."; desc[44] = "This worksheet can be used to calculate analysis of coal on various basis and also to calculate heat values of coal.It also includes an introduction to the subject of fuel analysis and calculation of heat values."; desc[45] = "This worksheet can be used to find the requirement of air for combustion of coal in kiln and precalciner . \n 1) Combustion of coal is supported by Oxygen from air. To calculate the combustion air requirements we first need to have the analysis of coal.Then find the theoretical air for combustion of coal.\n 2. Find the air required for burning fuel to meet requirement of heat to be supplied to kiln and precalciner, for given data on rate of clinker production, efficiency of fuel consumption, fuel heat value (as fired) and percentage fuel fired in kiln."; desc[46] = "This worksheet can be used to calculate requirement of theoretical air for combustion of coal and also to calculate products of combustion."; desc[47] = "This worksheet can be used to calculate flame temperature while firing fuel through a burner in form of flame."; desc[48] = "This worksheet should be used to calculate specific heats of combustion gases as a function of temperature. \n For given temperature of gases , find their respective specific heats \n " + "1) for unit volume at NTP \n" + "2) for unit mass"; desc[49] = "This worksheet should be used to calculate density of of a mixture of dry and wet gases \n Density of a mixture of dry gases at NTP can be calculated by knowing the volumetric percentages of individual gases present in the mixture. \n It is known that molal volume of any gas at NTP is 22.4 m3. That means, say for example, oxygen has a molecular weight of 32 .So, 32 Kg. of oxygen will occupy a volume of 22.4m3 at NTP \n Let us consider a typical flue gas having the following volumetric composition as shown in input data."; desc[50] = "Use this worksheet to calculate expected capacity for a given size of vertical roller mill for grinding coal and its power consumption based on Specific power consumption or specific mill capacity. Mill power at shaft is given. Sp. power consumption based on Hardgrove Index is evaluated. Calculate the capacity of the mill"; desc[51] = "Use this worksheet to calculate requirement of hot gas / air from clinker cooler or other hot gas sources to dry moisture from coal during grinding. \n Mill output, moisture in coal in feed and product, temperature of hot gas are known. 1) quantity of moisture to be evaporated per unit time 2) requirement of hot air to be provided per unit time 3) Mill fan rating"; desc[52] = "This worksheet can be used to find the requirement of air for combustion of fuel oil in kiln and precalciner . \n 1) Combustion of fuel oil is supported by Oxygen from air.To calculate the combustion air requirements we first need to have the analysis of oil.Then find the theoretical air for combustion of oil. \n 2 Find the air required for burning fuel to meet requirement of heat to be supplied to kiln and precalciner, for given data on rate of clinker production, efficiency of fuel consumption, fuel heat value (as fired) and percentage fuel fired in kiln."; desc[53] = "This worksheet can be used to find the requirement of air for combustion of fuel oil in kiln and precalciner . \n 1) Combustion of fuel oil is supported by Oxygen from air. To calculate the combustion air requirements we first need to have the analysis of oil. Then find the theoretical air for combustion of oil. \n 2 Find the air required for burning fuel to meet requirement of heat to be supplied to kiln and precalciner, for given data on rate of clinker production, efficiency of fuel consumption, fuel heat value (as fired) and percentage fuel fired in kiln."; desc[54] = "This worksheet can be used to find the requirement of theoretical air for combustion, products of combustion of gaseous fuel and heat value. \n Combustion of gaseous fuel is supported by Oxygen from air. Analysis of fuel is given. The air for combustion is assumed to be dry. \n 1. To calculate the theoretical air for combustion per unit heat release \n 2. Find the theoretical products of combustion per unit heat release \n 3. Find the heat value"; desc[55] = "Use this worksheet to calculate capacities required for blending and storage silos and their auxiliaries for a plant. For the given data calculate the capacities required for continuous blending silos, batch blending silos and silo discharge apparatus."; desc[56] = "Use this worksheet to calculate weigh bin and kiln feed pump capacities. The steps to be followed are as given below. \n Step :-1 Determine Kiln Capacity \nStep :2 Consider Transport equipment from Storage Silo with an over design factor of at least 1.2 . Find the capacity of kiln feed equipment for given input data" desc[57] = "Use this worksheet to calculate raw meal feed quantity for kiln .Calculation of Kiln Feed Quantity corrected for Ash from Coal and Dust loss from Preheater. In case of firing in Kiln by coal, ash from coal is absorbed by the clinker. If the composition of ash was identical to that of rawmeal, then the clinker quantity to be produced could be reduced by the corresponding quantity of ash. But normally ash consists of high percentage of SiO2 and other metallic oxides like Al2O3 etc. and very less or practically no CaCO3. Hence to maintain the Lime Standard of the clinker, Lime Standard of raw meal has to be increased to compensate for the lack of CaCO3 in the ash .In other words, raw meal feed quantity has to be increased over the theoretical quantity to maintain the same Lime Standard, or total Carbonate vis- a- vis CaO in clinker " desc[58] = "Use this worksheet to calculate blending factor of blending silos. Data on samples at silo inlet and silo discharged are used to find standard deviation which are used to calculate blending factor.In a blending silo samples are collected at regular intervals as the raw ground meal from the grinding mill is fed into it. The samples are sent to the laboratory where X-ray analyser is used to find the Lime Saturation Factor ( LSF ) of the sample. Feed composition to the silo are controlled in such a fashion that every fourth sample reading of LSF would lie on the other side of the set point , i.e. if three consecutive reading falls on one side of the set point line then the fourth must fall on the other side. Such a control is possible with the help of computer software which will set the mill feed components ratios, based on data received from X-ray analyser. " + "Samples are also collected from the discharge stream from the silo and the standard deviation is calculated. Find the blending factor over time." desc[59] = "Use this worksheet to calculate location of raw meal feed point into preheater gas duct at the top stage. To ensure that the material do not drop to the lower stage cyclone through the gas duct and thus avoid heat transfer, it is very important to see that the material is properly dispersed across the cross section of the gas duct. Invariably a dispersion plate is provided at the entry to the gas duct . Find the height of the location of raw meal entry point with ref. to the top of the lower stage cyclone" desc[60] = "Use this worksheet to calculate capacity of kiln and its auxiliary equipment . For given design conditions calculate the design capacities of kiln and its auxiliaries." desc[61] = "Use this worksheet to calculate leakage air through air seals of kiln. In this topic we describe the method of calculation of air leakage through kiln air seals. The Rotary Kilns are normally operated under suction condition and are therefore susceptible to leakage of air into the Kiln. Such leakage air is a big drain to energy as this air has to be heated to process temperature and at discharge heat is lost. Also electrical power is wasted to move this leakage air. An estimation of this leakage can be made as a function of gap in the seal and suction pressure. For given conditions , calculate the quantity of air leakage through the air seal." desc[62] = "Use this worksheet to calculate specific heat of clinker at various temperature. The specific heat of Clinker based on temperature ( For the temperature range of 0-1500 deg.c ) is calculated as given below.Calculate the sp. heats of clinker for given conditions of temperature" desc[63] = "Use this worksheet to calculate retention time of material inside kiln and other related parameters. For given data of a kiln calculate 1) retention time and 2) rate of advancement of feed 3) kiln volumetric loading" desc[64] = "Use this worksheet to calculate rating of cooling fans at kiln sinter zone. In this topic we describe the method of calculation for cooling air quantity for fans for kiln sinter zone. The sinter zone of Kiln normally extends from 6 to 8 times the internal diameter on refractory of Kiln. The shell in this zone may be heated ,specially in hot areas where ambient temperature can go upto 50 deg. C. Cooling of the shell is known to help refractory and semi molten raw meal to bond better. This is specially helpful if lab. report shows poor coating formation and dusty clinker. For the given data for kiln, determine total cooling air quantity that is required to be provided by a bank of axial fans." desc[65] = "Use this work sheet to determine nose ring cooling air fans ratings.Select kiln diameter and then read from table values cooling air required and the static pressure. Normally one blower is provided. Cooling air quantity is distributed through a ring which opens onto the kiln discharge end castings." desc[66] = "Use this work sheet to determine kiln shell ovality and tyre ovality. In this topic we describe the method of calculating the ovality of kiln tyres/shells. Ovality of Kiln shell beyond acceptable limit can effect life of Refractory lining in the Kiln. Kiln shell gets rigidity only after a tyre has been mounted. However, in case of loose tyre there exists a gap between the shell and the tyre at the top of the shell. The ovality of the shell , therefore cannot be guaranteed. But it is important to machine the tyres accurately with maximum ovality inside not to exceed 0.2% From given data calculate ovality" desc[67] = "Use this worksheet to calculate capacity and load for a given size of kiln. Calculate capacity, specific output and thermal load for a given size of kiln and its other related parameters." desc[68] = "Use this worksheet to calculate calculate degree of decarbonation of raw meal.For given data of a kiln calculate apparent degree of calcination and actual degree of calcination" desc[69] = "Use this worksheet to calculate calculate degree of decarbonation of raw meal at kiln inlet based on operating data..For given data of a kiln calculate apparent degree of calcination and actual degree of calcination" desc[70] = "Use this worksheet to calculate calculate reaction enthalpy for decarbonation of rawmeal for production of clinker.For pure Calcite (CaCO3 ) decarbonation takes place at a theoretical temperature of 896 oC. This is an endothermic reaction and the reaction enthalpy of dissociation of 1kg. CaCO3 is 397 k.cal./kg.CaCO3" desc[71] = "Use this worksheet to calculate theoretical heat of clinker formation.Theoretical heat of clinker formation can be calculated by a formula which considers percentage composition of oxides in clinker, For the given analysis of clinker calculate theoretical heat of clinker formation." desc[72] = "Use this worksheet to calculate mass of kiln under the operating conditions.Calculate operating mass of rotating parts of Kiln and charge, necessary to find the Torque and Power requirement." desc[73] = "Use this worksheet to calculate kiln torque under operating conditions. For calculation of operating TORQUE of Kiln it is necessary to first determine the total operating weight of the kiln and Mechanical weight and Charge weight separately. " desc[74] = "Use this worksheet to calculate kiln thrust for selection of hydraulic thruster.For given data of kiln, calculate axial thrust of the kiln for selection of hydraulic thruster.For calculation of operating thrust of Kiln it is necessary to first determine the total operating weight of the kiln " desc[75] = "Use this worksheet to calculate drive motor power for grate coolers" desc[76] = "In this topic we describe the method of calculating grate cooler recuperation efficiency.T.A. Duct Tapping from Cooler" desc[77] = "In this topic we describe the method of calculating grate cooler recuperation efficiency.T.A. Duct Tapping from Kiln Hood" desc[78] = "For a given kiln - grate cooler combination calculate the cooler offset from the kiln centre- and also determine the direction of the offset." desc[79] = "Consider that Clinker transport system from clinker cooler to clinker stockpile should be designed for 60 -65% or preferably for 100% over capacity because of expected surges of clinker or collapse of ring from the Kiln." desc[80] = "Use this worksheet to calculate kiln drive specification.For calculation of operating TORQUE of Kiln it is necessary to first determine the total operating weight of the kiln and Mechanical weight and Charge weight separately. Calculate drive rating for kiln" desc[81] = "Use this worksheet to calculate possible false air entry kiln preheater system. False air entry into kiln - preheater system affects heat consumption as well as power consumption. Excessive false air lowers the temperature of kiln exit gases and also lowers the heat available for transfer to raw meal. This is because heat is required to go into the false air to raise its temperature to preheater exit gas temperature. As also the preheater fan has to handle higher quantity gases the power consumption goes up. More gas volume has to pass through the preheater which results in additional pressure loss which also adds to additional power consumption for the preheater fan. Controlling of false air to reasonable value is therefore very important. In a kiln preheater system measurement is carried out at kiln inlet (point 1) and preheater exhaust (point 2). Gas flow rate at inlet is measured and gas analysis is done to find oxygen content at both points. Based on the given data find the rate of false air entry into the system between inlet and outlet.Let us calculate leakage air between two points 1 and 2 in a system under suction. The gas flows from 1 to 2" desc[82] = "Use this worksheet to calculate the quantity of kiln exhaust gases that needs to bypass suspension prehearter system to ensure low alkali content clinker.One o the most popular method of restricting build-up of alkali concentration in clinker is by allowing a part of the kiln gases to bypass the preheater. By this process a part of the alkali in volatile form is eliminated from the circuit. the bypass gases are treated in an ESP and the collected dust is rejected." desc[83] = "Use this worksheet to find the kiln filling degree in relation to central chord angle or charge angle. As the material charge in the kiln forms a segment of the cross section , it projects an angle at the centre-line of the kiln. The angle so formed is independent of the kiln diameter. So a definite correlation between the chord angle and the degree of filling exist. Find the correlation between the central chord angle formed by material charge in a kiln and the degrees of filling." desc[84] = "Use this worksheet to find the requirement of cooling air and cooling water to treat kiln bypass gas before being released to atmosphere. Kiln bypass gases ( gases which are exhausted directly without letting them pass through the preheater system) need to be dedusted in ESP or bag house. Since the temperature of the gases coming out of the kiln is in the range of 1100 degC. the gases are first cooled by fresh air to about 350 degC and then cooled further in evaporative cooler with water spray to about 150 degC. Alkali bypass system is adopted for a kiln system.A certain percentage of kiln exit gases are drawn off to be cooled by air and water to specified temperature. For given input conditions \n 1) find the quantity of fresh cooling air required and \n 2) also the quantity of cooling water required." desc[85] = "Capacities of various Auxiliary equipment / Hoppers can be worked-out with following considerations. Note : Many times cement production can be enhanced by grinding coarser than originally contemplated or by adding Pozzolanic material. It is of great importance to foresee such possibilities at design stage and design the capacities for maximum anticipated capacity of the Mill." desc[86] = "For given test value from Ziesel grindability test, find grindability at close circuit ball mill shaft at 3000 blaine value and any other desired value of fineness" desc[87] = "In case there is more moisture in Fly ash or Gypsum say 8-12 % then it may be required to provide hot gases to dry this Fly ash or Gypsum moisture wherever the clinker is cold. The calculation of the hot gases requirement for the above condition in ball mill based on heat balance is given below. For given input conditions, calculate hot gases required for drying in cement grinding ball mill" desc[88] = "Find theoretical production rate cement mill based on the grindability of the clinker as a function of grinding media load " desc[89] = "For a cement mill operating in close circuit, operating data are given. Find the grindability of the clinker based on these data. Then use this information to predict the power requirement for a different output at a different fineness " desc[90] = "For given data conditions , calculate the water quantity to be sprayed inside the cement grinding ball mill based on heat balance calculation." desc[91] = "For the given data set, calculate the requirement of power at shaft and the principal dimensions of the cement mill." desc[92] = "For an operating mill, capacity at a certain fineness is known . For the given data set calculate to predict expected outputs at other desired fineness" desc[93] = "Calculate the cooling air quantity for cement grinding ball mill based on velocity in the mill for the given set of data." desc[94] = "Use this worksheet to calculate radiation loss in a mill. In cement grinding mills, water spray is adopted to cool the clinker and cement. In such a case the radiation loss is low compared to mills where hot gas is passed through for drying as in cases of raw grinding mills and drum dryers. To calculate radiation loss from cement mill for the purposes of heat balance, consider minimum radiation loss. This enables automatic build up of safety margin " desc[95] = "Calculate power consumption of a mill at a given desired speed. In this topic we describe the method of calculating the power consumption of a mill at various speeds. In case a cement mill is fitted with variable speed drive, it is possible to optimise performance of the mill by attaining the most appropriate mill speed. The power consumption of the mill ,subject to all other conditions remaining same, will vary with a non linear relation as a function of speed. It is possible to calculate projected power consumption of a mill at various speeds" desc[96] = "Use this worksheet to find migration velocity of an existing or proposed ESP under actual or proposed operating conditions.Based on the given operating data evaluate the migration velocity of the dust particles collected in the esp." desc[97] = "Mill dimensions are given. Sp. power consumption and grinding media load are also known. Tovarovs formula is used to calculate the capacity of the mill." desc[98] = "Use this worksheet to calculate pressure losses in a ducting where air or gas also carries powdery material. A pipe or ducting is used to carry powdery material .The material runs through a horizontal stretch, a bend and a vertical lift. Find the pressure loss in the system on account of \n 1) lifting the material through a vertical height \n 2) accelerating the material to the velocity of carrying air \n 3) friction between material and pipe" desc[99] = "Use this worksheet to calculate the gas volume handled by glass bag filters as function of temperature. For the given set of data , calculate the gas volume to be handled by glass bag house based on the kiln output in direct operation and as a function of maximum allowable operating temperatures " desc[100] = "Use this worksheet to calculate gas volume rate for GCT & ESP .For the given input data conditions, calculate the quantity of gas volume to be handled in GCT and in ESP." desc[101] = "Use this worksheet to calculate size of a gas conditioning tower.For the given set of data determine the size of the GCT.The calculation of the Gas Conditioning Tower size is based on Nozzle Type" desc[102] = "Use this worksheet to find or project the performance of an existing or proposed ESP under different operating conditions.Based on the given data evaluate performance of the ESP in terms of efficiency and clean gas dust concentration" desc[103] = "Use this worksheet to find migration velocity of an existing or proposed ESP under actual or proposed operating conditions.Based on the given operating data evaluate the migration velocity of the dust particles collected in the esp." desc[104] = "A Chimney is erected to disperse exhaust gases to atmosphere at a height so that concentrated pollution is avoided. Chimney creates a natural suction at the bottom . Through an opening at the bottom of the Chimney, exhaust gases or air are let in. Due to the naturally created draught by the Chimney, the gases or air move up at a velocity and get exhausted to the Atmosphere and gets dispersed over an wide area.Use this worksheet to find the basic dimensions of a Chimney- a simplified design approach" desc[105] = "Use this worksheet to find the flow through a duct based on readings from pitot tube measurements. A Pitot tube is used to measure the total head and static head in a duct. Based on the measured data and given data on diameter of duct and air density determine: \n 1) Velocity head \n 2) flow rate \n 3) Velocity pressure" desc[106] = "Use this worksheet to calculate the operating volume of gas from standard volumes at STP (Standard Temperature and Pressure) or NTP (Normal Temperature and Pressure). For uniform referencing to gas quantity or gas flow rates, it is customary to express the volume at standard or normal conditions. Standard conditions or STP (Standard Temperature and Pressure) refer to 20deg. Centigrade and a barometric pressure at sea level corresponding to or 760 torr. Similarly, gas volume under NTP (Normal Temperature and Pressure) refer to 0deg. Centigrade and a barometric pressure at sea level corresponding to or 760 torr. Actual operating condition however are normally quite different than either STP or NTP. We have to consider the altitude of the site above mean sea level and find the barometric pressure and also find the operating gauge pressure as well as the operating temperature and apply correction to derive operating volume of gas.For a fan, the flow rate of air is specified at the inlet at NTP. Also given are, the altitude of the location above mean sea level, operating temperature and gauge pressure before fan. " desc[107] = "his worksheet can be used to find the requirement of air for combustion of gaseous fuel in kiln and precalciner.Specially in case of gaseous fuels, it is necessary to breakdown the hydro-carbons into their constituent elements. The analysis of gas in terms of hydro-carbons may be represented in volumetric basis. The formula to be used for gravimetric analysis and volumetric analysis needs to be carefully chosen. 1) Combustion of gaseous fuel is supported by Oxygen from air. To calculate the combustion air requirements we first need to have the analysis of fuel. Then find the theoretical air for combustion of gas.2 Find the air required for burning fuel to meet requirement of heat to be supplied to kiln and precalciner, for given data on rate of clinker production, efficiency of fuel consumption, fuel heat value (as fired) and percentage fuel fired in kiln" desc[108] = "This worksheet can be used to find the products of combustion of gaseous fuel and other related properties in kiln and precalciner. Combustion of gaseous fuel is supported by Oxygen from air. Analysis of fuel is given. The air for combustion is assumed to be dry. \n 1. To calculate the products of combustion including excess air. \n 2. Find the product gas volume at NTP and density at NTP \n 3. Find the molecular weight of products of combustion " desc[109] = "This worksheet can be used to find the products of combustion of gaseous fuel components.Any fuel consists of a number of combustible substances. They individually react with oxygen and form oxides. \n 1) Find the oxide components of fuel combustibles after burning \n 2) Establish heat release by each combustible component per unit weight of the components \n 3) For a given gas composition calculate the higher heating value." var str=''; var subtitle1 = 'List of Items :' var subtitle2 = 'View Shopping Cart :' var ButtonCode = '
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