福建省第四建筑公司煤渣砖厂利用合成氨厂碳化煤球渣为原料,已生产了三百万块自然养护硅酸盐砖。这种渣是合成氨厂(氮肥厂)用煤配以石灰,压成球,经二氧化碳养护,具有一定强度后代替块煤,用以造气后排出的废渣。废渣的形成温度为1200℃左右。利用它生产硅酸盐制品,可以不必另掺石灰等碱性激发剂。当 Fujian Provincial No. 4 Construction Company’s cinder brick plant uses synthetic carbon plant carbonized ball slag as raw material, and has produced three million naturally preserved silicate bricks. This kind of slag is the waste residue that the synthetic ammonia plant (nitrogen fertilizer plant) mixes the lime with coal and presses it into balls, which is cured by carbon dioxide, has a certain strength and replaces lump coal, and is used for gas generation. The formation temperature of the waste residue is about 1200°C. It can be used to produce silicate products without the need for additional alkaline activators such as lime. when