棕刚玉是制作砂轮的原料,在砂轮生产中它的生产量大、使用面广。为了解棕刚玉生产中粉尘对工人健康的影响,我们对太原砂轮厂进行了劳动卫生调查,并做了实验研究。 劳动卫生调查:我们对太原砂轮厂生产棕刚玉磨料的车间进行了劳动卫生调查,该车间是将冶炼车间生产的原料进行破碎、研磨、过筛,制得不同粒度的棕刚玉。车间空气中粉尘浓度波动在14.3—1241mg/m~3,全年15次定期定点测定,各采样点平均粉尘浓度为58.6—270.6mg/m~3,粉尘分散度小于5μm占67.5—87%。用x线衍射法测定棕刚玉粉尘中游离二氧化硅含量为0.6%。连续三天工时测 Corundum is the raw material for the production of grinding wheel, wheel production in the production of large, widely used. In order to understand the impact of dust on workers’ health in the production of corundum, we conducted a labor and health survey of the wheel factory in Taiyuan and conducted experimental research. Labor and Health Survey: We conducted a survey on labor hygiene of workshop producing corundum abrasives in Taiyuan Grinding Wheel Factory, which crushed, ground and sieved the raw materials produced in the smelting workshop to produce corundum of different grain sizes. The fluctuation of dust concentration in the air of the workshop was 14.3-1241mg / m ~ 3. The annual dust concentration was 58.6-270.6mg / m ~ 3 and the dust dispersion was less than 5μm accounting for 67.5-87%. The content of free silica in corundum dust was determined to be 0.6% by x-ray diffraction. Three days in a row measured