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一、前言我矿是一个中型地下开采矿山。矿床的成因类型为裂隙充填型高温热液、长石—石英脉黑钨矿床。矿体主要赋存于中粒及斑状中粒黑云母花岗岩中。花岗岩含游离二氧化矽为74.6％;石英脉含游离二氧化矽为94％;矿井粉尘中含游离二氧化矽为67％。属高矽尘含量
I. Introduction Mine is a medium-sized underground mine. The genetic type of the deposit is fissure-filling high-temperature hydrothermal, feldspar-quartz vein wolframite deposit. The orebodies mainly occur in medium-sized granulite and macular granodiorites. Granite with free silica is 74.6%; quartz vein with free silica is 94%; mine dust with free silica is 67%. Is a high silica dust content