The effect of a burnable additive in the form of petroleum coke and brown coal [lignite] on the properties of lightweight thermal insulation was examined. It is shown that the high ash content of coal and the heightened content of low-melting oxides in the ash activates the sintering process. An aluminum-silicate lightweight material with the optimal combination of physical and technical properties, such as the density, strength, and thermal conductivity, can be obtained by matching the filler, clay binder, and temperature by the trial-and-error method.

中文翻译：

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含碳可燃添加剂种类对轻质硅酸铝隔热性能的影响

研究了以石油焦和褐煤 [褐煤] 形式存在的可燃添加剂对轻质隔热性能的影响。结果表明，煤的高灰分含量和灰分中低熔点氧化物的含量升高激活了烧结过程。通过试错法匹配填料、粘土结合剂和温度，可以得到密度、强度、导热性等物理和技术性能最佳组合的硅酸铝轻质材料。