PROCESS DIAGNOSTIC STUDIES FOR CEMENT MILL …

• Process measurements were conducted. The details and observations on process measurements are given below: Mill vent flow : 972 m 3/min Separation air at separator outlet : 5599 m 3/min Separator vent air at bag filter outlet : 210 m 3/min − The velocity of gases calculated through mill is 1.29 m/sec. This velocity is sufficient for OPC33

4. MATERIALAND ENERGY BALANCE

exhaust flue gas losses are a key area for priority attention. Since the furnaces operate at high temperatures, the exhaust gases leave at high tempera-tures resulting in poor efficiency. Hence a heat recovery device such as air preheater has to be necessarily part of the system. The lower the exhaust temperature, higher is the furnace effi-ciency.

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A raw mill is the equipment used to grind raw materials into "rawmix" during the manufacture of cement. Rawmix is then fed to a cement kiln, which transforms it into clinker, which is then ground to make cement in the cement mill.The raw milling stage of the process effectively defines the chemistry (and therefore physical properties) of the finished cement, and has a large effect …

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In the raw material process, raw materials such as silica, clay, and iron are finely pulverized by raw mill. In this process, fans and blowers for suctioning and collecting fine powder is used. Because of the large thermal effect of rapid temperature change inside the mill, we have designed fans and blowers taking this into consideration.

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Raw mill exhaust fans: Raw mill exhaust fans or stack fans are also called as de-dusting fans. In cement industry raw mill exhaust fans handle 2.2 ton of exhaust gases for the production of 1 ton of clinker. Raw mill exhaust fans are operated with very adverse situations because the fan handles mainly gases such as CO2, N2, NOx and Sox along ...

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Ball mill trunnions Page 4/5/34 Page 4/5 Ball mill drives Page 4/5 Page 4/5 Cane knives and beet ... inch shaft size are itted to this raw material conveyor. Figure 3 Take up housing (tension type) itted to a ... This cement works ventilation fan uses SKF Cooper 02 BCP 900 EX TL S1 and 02 BCP 900 GR TL S1.

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The details of calculation are explained as follows. The system of grinding mill for raw materials includes roll mills, exhaust fan, smashing machine and electricity power transfer. To be ground, one ton of raw materials consume 21.75 kWh of electricity totally.

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Cement Process Chemistry - SlideShare

Process Overview Mining & Crushing Raw Mill Grinding Raw Meal Homogenization Pyro Processing Clinkerization Final Grinding Packaging Crushed Limestone Additives i.e. Iron ore or Clay Coal Ash From Coal Fired Fine Raw Meal (120)Res. < 3% Lt. wt 1200-1350 Clinker 1) Gypsum 2) Flyash 3) Pozzolona 4) Slag 1) OPC 2) PPC 3) Slag Cement …

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The proposed Portland Cement plant will include a multi-stage preheater-precalciner kiln with an in-line raw mill, coal mill, and clinker cooler system that will vent through a common main stack. Production is limited in the permit to 2,190,000 tons per year of clinker. The fuels burned at this facility will be coal and petroleum

User Details - subhash

re High Exit vent temp at cement mill outlet. ... re Regarding Pet Coke grinding with raw mix in raw mill. ... re Louvre ring in VRM. Calculate louver ring area . Measure mill inlet air flow if possible othewise measure at Mill fan inlet, and c... re The cement fineness!! check classifier seal gap ( maintain around 12 mm) . Reduce mill air flow

Energy optimization in cement manufacturing

large fans draw air through the kiln, precalciner, mills and filters to an ex-haust stack. Many smaller fans push the air into the grate cooler to reduce the temperature of the hot clinker leaving the kiln 1. All these airflows have to be adjusted and controlled as atmospheric conditions, process con-ditions and ventilation needs greatly

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