富氧侧吹熔炼处理电子废料回收有价金属中试研究  

Pilot-scale Test for Recovering Valuable Metals from WEEEs by Oxygen-enriched Side-Blown Smelting

作　　者：任国兴[1] 张晓林[2] 潘炳[1] 白成庆[2] 何从行[2] 肖松文[1] REN Guo-xing;ZHANG Xiao-lin;PAN Bing;BAI Cheng-qing;HE Cong-xing;XIAO Song-wen(Changsha Research Institute of Mining&Metallurgy Co.,Ltd.,Changsha 410012,China;Hunan Shuikoushan Nonferrous Metals Group Co.,Ltd.,Changning 421513,Hunan,China)

机构地区：[1]长沙矿冶研究院有限责任公司,长沙410012 [2]湖南水口山有色金属集团有限公司,湖南常宁421513

出　　处：《有色金属（冶炼部分）》2020年第9期39-44,共6页Nonferrous Metals（Extractive Metallurgy)

基　　金：国家“十二五”科技支撑计划项目(2015BAB02B02)。

摘　　要：在炉床面积3.6 m2富氧侧吹熔池熔炼炉上进行了电子废料熔炼回收有价金属的中试试验,投料速度1.04~2.30 t/h,熔炼区供氧浓度65.80%~66.11%,烟化区供氧浓度31.96%~36.32%,产出炉渣Cu、Au、Ag含量分别为0.11%、0.20 g/t、1.00 g/t,合金中有价金属Cu、Au和Ag回收率分别为98.43%、97.58%和99.27%,相应的渣型组成为:CaO/SiO2=0.33~0.41、Fe/SiO2=0.07~0.14、Al2O3含量11.33%~12.77%。试验结果表明,采用富氧侧吹熔池熔炼处理电子废料可以高效回收其中铜、金、银等有价金属。A pilot test was carried out to recover valuable metals from WEEEs in an oxygen-enriched side-blown smelting furnace with total bed area of 3.6 m2.Content of Cu,Au and Ag in slag is 0.11%,0.20 g/t and 1.00 g/t respectively with recovery rate of Cu,Au and Ag of 98.43%,97.58%and 99.27%,respectively under the conditions including feed rate of solid of 1.04-2.30 t/h,concentration of oxygen gas in smelting zone of 65.80%-66.11%,and concentration of oxygen gas in fuming zone of 31.96%-36.32%.CaO-SiO2-Al2O3 slag system containing some FeO for smelting process is appropriate under the conditions of CaO/SiO2=0.33-0.41,Fe/SiO2=0.07-0.14,and Al2O3 content of 11.33%-12.77%.The test results demonstrate that WEEEs can be processed effectively by oxygen-enriched side-blown smelting technology.

关 键 词：电子废料 富氧侧吹熔炼 CaO-SiO2-Al2O3渣 铜 回收 

分 类 号：X758[环境科学与工程—环境工程]