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采用不同的原料,可以制造出容重在0.2—1.3之间、孔隙率为30—50％的各种轻质无机多孔板。其制做方法,按体积计算,用100份无机轻质颗粒材料(粒径为O.3—5毫米,比重为0.1—1.2千克/升),与5—30份细无机颗粒材料就可制成这种板。细无机颗粒材料的熔点≥600℃,但低于上述无机轻质颗粒材料。可以用泡沫黑曜岩,珍珠岩颗粒,SiO_2颗粒,粉煤灰,煤渣灰作无机轻质颗粒材料。用玻璃体细颗粒作为细无机颗粒材料。
Using different raw materials, various lightweight inorganic porous plates with a bulk density of 0.2-1.3 and a porosity of 30-50% can be produced. The method for its preparation, according to the volume, with 100 parts of inorganic light particle material (particle size of O. 3-5 mm, specific gravity of 0.1-1.2 kg / l), and 5-30 parts of inorganic particulate material can be made Into this board. The melting point of the fine inorganic particulate material is ≥600°C, but lower than the above-mentioned inorganic lightweight particulate material. It is possible to use foamed obsidian, perlite, SiO 2 particles, fly ash, and coal ash as inorganic lightweight particles. Vitreous fine particles are used as the fine inorganic particle material.