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在采用复合矿化剂的前提下,利用粉煤灰全部代替粘土配制水泥生料,在干法中空转窑内1300～1400℃烧制成水泥熟料,再以粉煤灰为混合材生产粉煤灰硅酸监水泥。熟料中A含量占70%左右,水泥具有早强性能。以粉煤灰作混合材掺量为30～35%时,水泥28天标号在425以上。1t水泥总用灰量为50%左右,3天强度相当于Ra425以上。该水泥具有良好的耐久性,其各项技术指标均达到设计、施工、工程的要求。
Under the premise of using composite mineralizers, fly ash is used instead of clay to prepare cement raw meal, and it is burned at 1300-1400°C in a dry-process hollow kiln to produce cement clinker, and fly ash is used as a mixture to produce powder. Coal ash silic acid supervised cement. The content of A in clinker accounts for about 70%, and cement has early strong performance. When fly ash was used as the admixture for 30 to 35%, cement was marked at 425 for 28 days. The total ash content of 1t cement is about 50%, and the strength for three days is equivalent to Ra425 or more. The cement has good durability, and its technical indicators all meet the requirements of design, construction and engineering.