CEMENT MANUFACTURING METHOD

摘要

This cement manufacturing method is a cement manufacturing method for manufacturing cement clinker by burning a cement starting material charged from a kiln back part (2) into a cement kiln (1) the interior of which is held under a high-temperature atmosphere of 1400°C or higher by a flame from a main burner (5) provided at a kiln front (4) while sending the cement starting material to the kiln front (4) side. By charging an amount of dry sludge that compensates for the amount of change of P2O5 in the cement starting material or the amount of change of P2O5 contained in the manufactured cement clinker into the cement kiln (1), the amount of P2O5 contained in the cement clinker is controlled within the range of 0.3-1.0 percent by weight.