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一、概况珍珠岩是酸性含水火山玻璃质熔岩,它是火山喷发、岩浆遇冷急剧凝缩而成的非金属矿物。珍珠岩具有玻璃结构和珍珠状构造,新鲜断口呈玻璃或珍珠光泽。矿石有润滑感,颜色有灰白、浅绿、黄白、暗绿等色。矿石经焙烧急速受热体积膨胀可达20倍左右,比重大大减轻,成为一种内部多孔的白色颗粒,称珍珠岩粉,国外称珠光砂。它具有容重小、质轻、疏松多孔、保温、隔热和吸音等特性,用途广
I. Overview Perlite is an acidic water-bearing volcanic vitreous lava. It is a non-metallic mineral that is formed by volcanic eruptions and magma condensation. Perlite has a glass structure and a pearl-like structure, fresh fracture glass or pearl luster. The ore has a lubricating feeling and the colors are gray, light green, yellowish white, dark green and other colors. The rapid thermal expansion of the ore by roasting can reach a volumetric expansion of about 20 times, and the specific gravity is greatly reduced. It becomes an internally porous white granule, which is called pearlite powder, and is called pearlescent sand in foreign countries. It has the characteristics of small bulk density, light weight, loose porosity, heat preservation, heat insulation and sound absorption, etc.