Manufacturing of Portland Cement – Process and Materials - RAW MATERIALS FOR CEMENT MANUFACTURING - …
called raw meal is the main undesirable impurity. The levelThe main materials used in cement production are minerals containing calcium oxide compositional variations can be achieved to produce cements with different properties. In the U.S. made of calcined mixtures of clay and limestone. When mixed with water becomes a hard and strong building material.The raw materials for the manufacture of Portland cement (or just cement) are limestone,
