Rotary Kiln Design Important Formulas

Rotary Kiln Design Important Formulas   Inderjeet Singh Sidhu , Sr.GM Technical at Hyderabad   Kiln Tyre Material :  GS 24 Mn 5 (Normalized Cast Steel) Kiln Tyre Dimension:  5620 OD x 4581 ID x 775 (width) Supporting Rollers Assemblies Material : CS 640 (Normalized Cast Steel) Supporting Rollers Assemblies Dimensions : 5620 OD x 4581 ID x […]

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Essential Reference Data for any Cement Engineer

Essential Reference Data for any Cement Engineer Specific Gravities & Grindabilities   Bulk Densities Of Materials For Silo Storage Thermal Conductivities of Various Substances

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Kiln Gas Velocities

Kiln Gas Velocities   Upper Limit-Velocity (m/s) Through cooler grate 5 Hood 6 Under cooler bull-nose 15 Burning zone (1450 C) 9.5 Feed end transition (1000 o C) 13 Riser 24 o Preheater gas ducts 18 Lower Limit-Velocity (m/s) Tertiary duct 25 Pulverized coal conveying 25  

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2018 Target Days of Storage in Cement industry

2018 Target Days of Storage in Cement industry S.No Item / Equipment Days for storages 1. Limestone Storage/ Preblending Stockpile* Chapter – III Operating Hours Chapter – IV Days of Storage 7 2. Raw Meal Storage (Active) 1 – 1.5 3. Clinker 7-15 4. Cement 3-10 5. Fuel Storage* 15-30 (depending upon lead time) 6. […]

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2018 Target Operating Hours in Cement industry

2018 Target Operating Hours in Cement industry S.No. Department Operating hrs/Day 1. Mines* 10 2. Crusher* 10 3. Raw Mill (Ball mill, VRM) 21 Raw mill (Roller press) 20 4. Coal mill (Ball mill, VRM) 21 5. Kiln 24 6. Cement Mill (Ball mill, VRM + Horrow mill) 21 Cement mill (Roller press) 20 7. […]

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2018 Thermal Energy Consumption Target in Cement Industry

2018 Thermal Energy Consumption Target in Cement Industry                   Parameter (kCal / kg Clinker) Theoretical heat consumption 410 Pre-heater loss 105 Cooler loss (Clinker & Cooler vent gases) 90 Radiation loss 75 Heat Input -30 Total 650

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Important Miscellaneous Formulas used in Cement industry

Important Miscellaneous Formulas used in Cement industry         Cooling tower performance Boiler Efficiency   COP of Refrigerator  

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Safety Formula in Cement Industry

Safety Formula in Cement Industry   Accident frequency rate Accident frequency rate is defined in terms of number of accidents per million man-hours worked Severity rate Accident severity rate is defined in terms of the number of days lost due to accidents per 1000 man-hours worked Safety performance  

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Financial Expression for Cement Companies Chair Man

Financial Expression for Cement Companies Chair Man   Simple payback period Simple Payback Period (SPP) represents, as a first approximation; the time (number of years) required to recover the initial investment (First Cost), considering only the Net Annual Saving Internal rate of return (IRR) This method calculates the rate of return that the investment is […]

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Bucket Conveyor , drag chain & screw Conveyor important Formulas

Bucket Conveyor , drag chain & screw Conveyor important Formulas     Bucket Elevator Power Screw Conveyor Power Drag Chain Power Pump efficiency Compressor Power Compressor efficiency Compressor capacity test (Pumping method) Air leakage test in compressor

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