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苏联硅酸盐混凝土科学研究院在研究制造以页岩灰为基础的蒸压加气混凝土过程中,用波罗的海沿岸的页岩制得具有稳定保温性能的制品。为了使原料适于生产蒸压加气混凝土制品,这种页岩灰必须经过规定温度为900—950℃的热处理。这种热处理作用的结果就保证了页岩中所含碳酸盐完全分散;亚硫酸盐完全氧化。热处理加工的页岩灰中含有25—30％
The Soviet Academy of Silicate Concrete Research used a shale ash-based shale to produce products with stable thermal insulation properties during the research and manufacture of shale ash-based autoclaved aerated concrete. In order to make the raw materials suitable for the production of autoclaved aerated concrete products, the shale ash must be heat-treated at a prescribed temperature of 900-950°C. The result of this heat treatment ensures that the carbonates contained in the shale are completely dispersed; the sulfite is completely oxidized. Heat treated processed shale ash contains 25-30%