(1. 昆明理工大学 真空冶金国家工程实验室，昆明 650093；
2. 昆明理工大学 冶金与能源工程学院，昆明 650093；
3. 云南锡业集团（控股）有限责任公司 锡业分公司，个旧 661000)
摘 要: 硫渣是锡精炼加硫除铜过程中产生的一种高附加值危险废弃物，其主要成分为锡(60%~70%)、铜(15%~25%)和硫(10%~15%)，具有较高的经济价值。为将硫渣中锡与铜高效分离，本研究向硫渣中加硫后在高温真空蒸馏炉中对其进行常压硫化-真空气化处理。结果表明，挥发物为硫化亚锡，其中锡和铜的含量分别为74.95%和0.46%；残留物为硫化亚铜，其中锡和铜的含量为0.26%和76.41%。锡的直收率为99.96%，铜的直收率为99.08%，锡与铜的分离率为99.90%。常压硫化-真空气化法为锡精炼硫渣的清洁高效处理提供了新方法，为锡铜合金的分离提供了新思路。
关键字: 常压硫化-真空气化；绿色高效；分离；硫渣；锡；铜
（1. National Engineering Laboratory of Vacuum Metallurgy, Kunming University of Science and Technology, Kunming 650093, China;
2. School of Metallurgy and Energy Engineering, Kunming University of Science and Technology, Kunming 650093, China;
3. Tin Industry Branch, Yunnan Tin Industry Group (Holding) Co., Ltd., Gejiu 661000, China）
Abstract:Sulfur slag is a kind of high value-added hazardous waste produced in the process of adding sulfur to remove copper in tin refining. Its main components are tin (60%-70%), copper (15%-25%) and sulfur (10%-15%), which has high economic value. In order to separate tin and copper from sulfur slag efficiently, the sulfur slag was sulfurized under atmospheric sulfuration and vacuum gasification in a high temperature vacuum distillation furnace. The volatile is stannous sulfide, in which the contents of tin and copper are 74.95% and 0.46%, respectively. The residue is cuprous sulfide, in which the contents of tin and copper are 0.26% and 76.41%, respectively. The direct yields of tin and copper are 99.96% and 99.08%, respectively. The separation rate of tin and copper is 99.90%. The atmospheric sulfuration-vacuum gasification method provides a new method for the clean and efficient treatment of tin refining sulfur slag, and provides a new idea for the separation of tin copper alloy.
Key words: atmospheric sulfuration-vacuum gasification; green and efficient; sulfur slag; separation; tin; copper
