毒砂是一种分布较广的含砷矿物,常与铜、铅、锌硫化矿物共生,在别选铜、铅、锌矿物时,常被选进精矿。精矿含砷量过高,不但降低精矿质量,而且将在冶炼过程中造成环境污染。因此对精矿含砷量要求越来越严,本文从采用选择性捕收剂的角度,研究铜砷分离问题。采用丁黄腈酯、甲基硫氨酯和丁黄药对铜砷分离浮选试验表明,甲基硫氨酯是铜砷分离的一种理想捕收剂,它不但选择性好,在PH7—10广泛范围内,能选择性捕收黄铜矿,实现铜砷分离,而且在处理含铜离子的矿石时,有较强的适应性。表现为采用甲基硫氨酯,铜 Arsenopyrite is a widely distributed arsenic minerals, often with copper, lead, zinc sulfide minerals symbiosis, in the choice of copper, lead, zinc minerals, often being selected into the concentrate. Concentrates containing arsenic is too high, not only reduce the quality of concentrate, and will cause environmental pollution in the smelting process. Therefore, the arsenic content of the concentrate is more and more stringent requirements, this paper from the perspective of the use of selective collectors, copper and arsenal separation problem. The results of flotation experiments on the separation of copper and arsenic with butadiene, methylthiourethane and butyl xanthate show that methylthiourethane is an ideal collector for the separation of copper and arsenic. It not only has good selectivity, 10 A wide range of selective capture of chalcopyrite, copper and arsenic separation, but also in the treatment of copper-bearing ore, there is a strong adaptability. Performance for the use of methyl thiourethane, copper