赣州钴冶炼厂建厂数十年，一直使用高含砷量的砷钴矿冶炼钴。生产流程中的电炉熔炼、破碎、沸腾炉和收尘等工段，都产生三氧化二砷烟尘。车间虽设有烟尘沉降和烟道收尘系统，但多年的空气监测显示，仍有５０％左右的数据超过０．３ｍｇ／ｍ３的容许标准，混合粉尘亦有４０... Ganzhou cobalt smelter plant construction for decades, has been using arsenic cobalt ore high arsenic smelting cobalt. In the production process of electric smelting, crushing, boiling furnace and dust collection and other sections, have arsenic trioxide smoke and dust. Although the workshop is equipped with smoke and dust settling and flue dust collection system, but many years of air monitoring shows that there are still about 50% of the data exceeded the allowable standard of 0.3mg / m3, mixed dust also has 40 ...