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根据GB~(4817-86)号补充件规定,对本市冶金和电器行业主要生产车间的11种50份不同类型的粉尘中游离二氧化硅进行了测定。结果表明,硅冶炼厂的硅原料破碎行业,不论何工种,粉尘中SiO_2含量均在10％以上,危害严重;电器制造厂的磨工行业,粉尘SiO_2含量均数为11.69％(2.75～44.2),大多数工种粉尘SiO_2含量超标,硅成品包装、砂轮磨光、煤尘及静电喷涂等均在10％以下。其为今后丌展测尘工作及分析提供了参考数据。
According to GB ~ (4817-86) supplement provisions of the city’s metallurgical and electrical industry, the main production workshop of 11 kinds of 50 different types of dust in the determination of free silica. The results showed that the content of SiO_2 in the silicon raw materials in the silicon smelter was above 10%, regardless of the type of work, and the average content of SiO_2 in the grinding industry was 11.69% (2.75 ~ 44.2) , Most types of work dust SiO 2 content exceeded, silicon finished packaging, grinding wheel, coal dust and electrostatic spraying are below 10%. It provides reference data for future work on dust detection and analysis.