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砷是比較广泛的分散于地壳中,集中存在者有硫化矿:如雄黃(As_2S_3)、毒砂(FeAsS)等,以及銅、鉛的硫化矿床中总伴生着一定数量,都为提制金屬砷的主要原料。东北地区的硫化銅矿,經浮选后,含As0.689～1.22%硫化鉛精矿含As为0.76～1.55.8%。由銅鉛硫化矿提煉至粗銅和粗鉛(火法),便有大量的烟尘产生,呈硫化物形态的絕大部分砷和各种金屬形态的部分砷,随着烟气一併揮发,由布袋收尘或电气收尘,捕集回收之。
Arsenic is widely dispersed in the crust. Concentrated sulfide minerals such as realgar (As 2 S 3), arsenopyrite (FeAsS), and copper and lead sulphide deposits are always associated with a certain amount of metal arsenic The main raw material. Copper sulphide ore in northeast China, after flotation, contains As0.689 ~ 1.22% lead sulphide concentrate with As content of 0.76 ~ 1.55.8%. From copper and lead sulphide ore to crude copper and crude lead (fire method), there are a lot of smoke and dust generated, the majority of arsenic sulfide forms and a variety of metal forms of arsenic, with the flue gas volatilization, By the bag dust or electrical dust collection, capture recovery.