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在我国长江流域的許多省份,有着大量的亚砂土。这种亚砂土系岩石风化而成的一种砂质粘土,质地松散,粘性很小,粒径小于0.005mm的顆粒含量为3～10%,大于0.1mm的顆粒在75%以下。土的顏色有土黄、橙黄和橙棕等数种。亚砂土經过活化后可以制得强度很高的硅酸盐制品,是发展硅酸盐制品工业的一种良好原料。一、亚砂土的活化。自然状态的亚砂土沒有活性,在制作硅酸盐砖之前須进行活化处理。活化方法可分机械活化和化学活化两种。机械活化主要是磨細、混合和湿碾。物料在磨細和碾压过程中产生了新的活
In many provinces in the Yangtze River basin in China, there is a large amount of sub-sand. This kind of sandy clay made of weathered rock of sub-sand is loose in texture with little stickiness. The content of particles smaller than 0.005mm is 3 to 10%, and that of particles larger than 0.1mm is less than 75%. There are several types of earth colors, such as earth yellow, orange yellow and orange brown. Subsoil can be prepared after the activation of high strength silicate products, is a good raw material for the development of silicate product industry. First, the activation of sub-sand. The sub-sand in the natural state is inactive and must be activated prior to making the silicate brick. The activation method can be divided into mechanical activation and chemical activation. Mechanical activation is mainly grinding, mixing and wet grinding. Material creates new activity during grinding and rolling