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上海耐火材料厂(以下简称上耐厂)是个中型的耐火材料企业,主要产品有高铝砖、粘土砖、矽砖及耐火纤维。产品的主要原料是石英石、粘土、焦宝石、矾土。游离二氧化硅含量分别为98、10.5～31.9、24.6～32.5、5.3～26.8％。全厂年产耐火材料23万吨,职工四千余人,接尘工人2,300余人。 上耐厂前身是生产砖瓦的私营企业,1958年开始扩建改建,定型生产耐火材料,由于当时生产环境未得到及时相应的改善、设备简陋,劳动强度大,粉尘浓度高,扬尘点的浓度最高可达1000mg/m~3以上。1964年后,该厂有计划地采取密闭,通风等综合防尘措施;坚持
Shanghai refractory plant (hereinafter referred to as resistant plant) is a medium-sized refractories business, the main products are high alumina bricks, clay bricks, silica bricks and refractory fiber. The main raw material products are quartz, clay, coke, bauxite. Free silica content were 98,10.5 ~ 31.9,24.6 ~ 32.5,5.3 ~ 26.8%. The whole plant annual output of refractory 230,000 tons, more than 4,000 workers, workers dust more than 2,300 people. On the former plant is resistant to refractory brick production of private enterprises, expansion began in 1958, stereotypes production of refractory materials, due to the production environment was not timely and corresponding improvement, the equipment is simple, labor-intensive, dust concentration is high, the highest dust concentration point Up to 1000mg / m ~ 3 or more. After 1964, the factory planned to adopt airtight, ventilation and other integrated dust control measures; insisted