(1. 昆明理工大學(xué) 真空冶金國(guó)家工程實(shí)驗(yàn)室，昆明 650093；
2. 昆明理工大學(xué) 冶金與能源工程學(xué)院，昆明 650093；
3. 云南錫業(yè)集團(tuán)（控股）有限責(zé)任公司 錫業(yè)分公司，個(gè)舊 661000)
摘 要: 硫渣是錫精煉加硫除銅過(guò)程中產(chǎn)生的一種高附加值危險(xiǎn)廢棄物，其主要成分為錫(60%~70%)、銅(15%~25%)和硫(10%~15%)，具有較高的經(jīng)濟(jì)價(jià)值。為將硫渣中錫與銅高效分離，本研究向硫渣中加硫后在高溫真空蒸餾爐中對(duì)其進(jìn)行常壓硫化-真空氣化處理。結(jié)果表明，揮發(fā)物為硫化亞錫，其中錫和銅的含量分別為74.95%和0.46%；殘留物為硫化亞銅，其中錫和銅的含量為0.26%和76.41%。錫的直收率為99.96%，銅的直收率為99.08%，錫與銅的分離率為99.90%。常壓硫化-真空氣化法為錫精煉硫渣的清潔高效處理提供了新方法，為錫銅合金的分離提供了新思路。
關(guān)鍵字: 常壓硫化-真空氣化；綠色高效；分離；硫渣；錫；銅
（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
