Jan 29, 2014· To make Portland cement—the most common type of cement—powdered limestone is heated in a rotary kiln. As a source of calcium, it joins with powdered clay to produce a product called clinker, which is then ground with a source of sulfate, like gypsum. It is mixed with water, sand and crushed rock to create concrete.
Limestone needed to make clinker can . lime stone required to produce 1 tonne cement clinker. . 1 ton of clinker requires how much coal how much limestone to make . Get Price And Support Online CO2 Cement Production Institute for Global .