Labels:bulletin board | chat room | hakham | monitor | sky | trade name | web site | window OCR: Manufacture Of Portland Cement Limestone chalk, etc Raw materials prepar ation Kiln Crushing sampling 1450 (2600F) Clay shale stockpiling blending The raw materials are broken crushed and sampled. The prepared raw materials are fed to Cooling the rotary kiln The kiln typically operates at 2600F for the production of Portland cement Heating to this Milling temperature results decomposition the clay minerals and decarbonation of the calcite (kal sit) enabling the production of calcium silicates (Sil i kat) Gypsum Finally the cement clinker from the kiln S cooled before milling the required fineness Gypsum ortland S added to contro its setting rate producing cements for different purposes These are ement referred as Type 1.1. T. IV. and type 23 emperature inall linke kilr oetor nilling
