研究了砷钴矿真空蒸馏脱砷的可行性和规律性,考查了温度、残压、时间、粒径等因素对砷挥发率的影响,并进行了公斤级的扩大实验。实验表明:真空蒸馏是对砷钻矿进行脱砷的有效方法。在适当的条件下砷挥发率达89%~95%,粗砷品位达76wt.-%~97wt.-%。对粗砷进行真空重蒸馏,可获得品位为99.7wt.-%的元素砷。 The feasibility and regularity of arsenic-cobalt-cobalt vacuum distillation for arsenic removal were studied. The effects of temperature, residual pressure, time and particle size on arsenic volatilization were investigated. And a killer-scale experiment was carried out. Experiments show that vacuum distillation is an effective method for arsenic removal of arsenic. Arsenic volatilization rate of 89% ~ 95% under appropriate conditions, crude arsenic grade of 76wt .-% ~ 97wt .-%. The vacuum distillation of crude arsenic, available grade 99.7wt .-% Elemental arsenic.