粉煤灰是一种尚未充分开发的潜力很大的资源。我国火力发电厂每年总共要排放数千万吨粉煤灰,排灰量现在占世界第三位。然而,我国灰渣利用的水平却是相当落后的。各工业国家粉煤灰利用率一般为百分之二十至八十,而我国还不到百分之十。预计今后几年内排灰量将不断增长,如果利用率上不去,两者之间的矛盾就会更尖锐化。 Fly ash is a potential resource that has not yet been fully exploited. China’s thermal power plants emit a total of tens of millions of tons of fly ash each year, and the amount of ash discharged now accounts for the third place in the world. However, the level of ash residue utilization in our country is quite backward. The utilization rate of fly ash in various industrial countries is generally 20% to 80%, while China’s utilization rate is less than 10%. It is expected that the amount of ash emissions will continue to increase in the next few years. If the utilization rate does not increase, the contradiction between the two will become more acute.