タイトルまたは説明

Clinker isknown as lumps or nodules, usually 3 mm (0.*2 inch) to *5 mm (0.*8 inch) in diameter, produced by sintering (fused together without melting to the point of liquefaction) limestone and aluminosilicat materials such as clay during the cement kiln stage. 
Portland cement clinker is a dark grey nodular material made by heating ground limestone and clay at a temperature of about ***0 °C - ***0 °C. The nodules are ground up to a fine powder to produce cement, with a small amount of gypsum added to control the setting properties so Clinker is one step production before Cement and now is exported in huge quantity.
Grey OPC & SRC Clinker:
whitch are suitable for the production of cement type Cem I *2.5 N, Cem I *2.5 R, Cem I *2.5 N.
White Clinker:
Suitable to produce White Portland Cement