珍珠岩是一种酸性火山玻璃质岩石,因它具有珍珠裂隙结构而得名,珍珠岩这一名词包括其岩石及烧成物两个含义,国内通常把烧成物称膨胀珍珠岩以示与原石的区别。珍珠岩的成份属于石英粗面岩系统。由于火山岩浆喷出后冷却速度的差异,形成的岩石类型也不相同。爆发时的生成物为轻石,稍徐冷者为流纹,急冷者即为珍珠。珍珠岩内含有结合水,当这种含水的玻璃熔岩受高温作用时,玻璃质即由固态转化为粘稠状态,内部结合水则由液态变为高压水蒸汽向外扩散,促使粘稠的玻玻质不断膨胀,膨胀的玻 Perlite is an acidic volcanic vitreous rock named for its pearl fissure structure. The term perlite includes both its meaning of rock and burned material. The domestic term is usually referred to as “expanded perlite” The difference between the original stone. The composition of perlite belongs to quartz mafic system. Due to the difference in cooling rate after volcanic magma is ejected, the rock types formed are also different. The product of the eruption is pumice stone, slightly cold for the flow pattern, quench is the pearl. Perlite contains a combination of water, when this water-containing glass lava by high temperature, the vitreous from the solid into viscous state, the internal water from the liquid into a high-pressure water vapor outward diffusion, to promote viscous glassy Constantly expanding, expanding glass