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为制订硅酸铝耐火纤维粉尘卫生标准提供依据,我们按全国协作项目统一方法对硅酸铝耐火纤维生产作业环境及人体进行了三年动态观察。通过调查了解到硅酸铝耐火纤维属于α—方石英,游离二氧化矽的含量在3.73～5.71%,各作业点粉尘浓度均值波动范围(重量法)0.62～12.32mg/M~3,纤维计数法测定粉尘纤维浓度均值范围0.11～1.38根/cm~3。同时选择了50名
In order to provide the basis for the development of sanitary standards for aluminum silicate refractory fiber dust, we conducted a three-year dynamic observation of the operating environment and human body of aluminum silicate refractory fiber according to a unified national collaborative project. According to the investigation, it was found that aluminum silicate refractory fiber belongs to α-cristobalite, the content of free silica is between 3.73% and 5.71%, and the fluctuation range of average dust concentration at each working point (gravimetric method) is 0.62 ~ 12.32mg / M ~ 3. The average dust concentration in the range of 0.11 ~ 1.38 root / cm ~ 3 was determined by the method. At the same time chose 50