Cement industries

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Cement industries

  1. 1. 0 50 100 150 200 Capacity Production Despatches 0 5 10 Export 2006-07 2007-08 In Million Tonnes
  2. 2. MONTH 2007-08 2008-09 April- Oct. 95.05 MT 101.04 MT October 11.61 MT 12.37 MT
  3. 3. ZONE YEAR 2006-07 YEAR 2007-08 EAST 17% 17% SOUTH 26% 30% NORTH 21% 20% WEST 20% 18% CENTRAL 17% 16%
  4. 4. Consumption Housing Irrigation Infrastructure Road Defence
  5. 5. THE CEMENT MANUFACTURING PROCESS
  6. 6. 1. BLASTING : The raw materials that are used to manufacture cement (mainly limestone and clay) are blasted from the quarry. Quarry face 1. BLASTING 2. TRANSPORT 3. CRUSHING AND TRANSPORTATION : The raw materials, after crushing, are transported to the plant by conveyor. The plant stores the materials before they are homogenized. Quarry 3. CRUSHING & TRANSPORTATION 2. TRANSPORT : The raw materials are loaded into a dumper. crushing conveyor dumper storage at the plant loader
  7. 7. 1. RAW GRINDING : The raw materials are very finely ground in order to produce the raw mix. 1. RAW GRINDING Raw grinding and burning 2. BURNING 2. BURNING : The raw mix is preheated before it goes into the kiln, which is heated by a flame that can be as hot as 2000 °C. The raw mix burns at 1500 °C producing clinker which, when it leaves the kiln, is rapidly cooled with air fans. So, the raw mix is burnt to produce clinker : the basic material needed to make cement. conveyor Raw mix kiln cooling preheating clinker storage at the plant Raw mill
  8. 8. 1.GRINDING : The clinker and the gypsum are very finely ground giving a “pure cement”. Other secondary additives and cementitious materials can also be added to make a blended cement. 1. GRINDING Grinding, storage, packing, dispatch 2. STORAGE, PACKING, DISPATCH 2. STORAGE, PACKING, DISPATCH :The cement is stored in silos before being dispatched either in bulk or in bags to its final destination. clinker storage Gypsum and the secondary additives are added to the clinker. silos dispatch bags Finish grinding

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