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投稿时间：2021-08-02 修订日期：2021-08-09
投稿时间：2021-08-02 修订日期：2021-08-09
中文摘要: 铜铟镓硒太阳能电池（CIGS）芯片废料中硒元素具有很高回收价值。开展了从废旧CIGS电池材料硫酸浸出液中回收硒的研究。对比了铜粉、亚硫酸钠和二氧化硫3种还原剂的沉硒效果，结果表明，二氧化硫的沉硒效果好、同时酸浸液中杂质元素几乎不发生共沉淀，具有很好的选择性。考察了试验温度、二氧化硫流量和初始酸浓度对沉硒效果的影响，得出优化试验条件如下：CIGS硫酸浸出液初始酸浓度20 g/L，100 mL酸浸液中以1.8 L/h的流量通入SO2，在80 ℃下反应2 h。在优化条件下，硒的沉淀率可达94.51%左右，所得粗硒沉淀中硒含量约为95.67%。为废旧CIGS材料回收提供了一种有效的方法。
Abstract:Recovery of selenium in Cu(In, Ga)Se2 (CIGS) solar cell waste materials is of great importance. Recovery of selenium from sulfuric acid leaching solution of waste CIGS solar cell materials was studied. Effects of three reducing agents, namely copper powder, sodium sulfite and sulfur dioxide, on precipitation of selenium were studied. The results show that precipitation rate is better when using SO2, and impurity elements in acid leaching solution can hardly precipitate together with selenium, which has good selectivity. Effects of temperature, sulfur dioxide flow rate and initial acid concentration on selenium precipitation were investigated. Precipitation rate of selenium is about 94.51% and selenium content in crude selenium precipitate is about 95.67% under the optimum conditions including initial acid concentration of CIGS sulfuric acid leaching solution of 20 g/L, 100 mL of acid leaching solution is fed with SO2 at flow rate of 1.8 L/h, reacting temperature of 80 ℃ and reaction time of 2 h. It provides an effective method for recycling of waste CIGS materials.
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基金项目:国家重点研发计划项目（2018YFC1903106）；矿冶科技集团有限公司科研基金重点项目（02-2004）；矿冶科技集团有限公司科技产业发展基金项目（04602021-122）
引用文本：
李拓夫,靳冉公,黄海辉,常耀超,王为振,高崇,徐晓辉.从CIGS材料硫酸浸出液中回收硒的研究[J].有色金属（冶炼部分）,2021(11):65-70.
LI Tuo-fu,JIN Ran-gong,HUANG Hai-hui,CHANG Yao-chao,WANG Wei-zhen,GAO Chong,XU Xiao-hui.Research on Recovery of Selenium from Sulfuric Acid Leaching Solution of Waste CIGS Material[J].Nonferrous Metals (Extractive Metallurgy),2021(11):65-70.
李拓夫,靳冉公,黄海辉,常耀超,王为振,高崇,徐晓辉.从CIGS材料硫酸浸出液中回收硒的研究[J].有色金属（冶炼部分）,2021(11):65-70.
LI Tuo-fu,JIN Ran-gong,HUANG Hai-hui,CHANG Yao-chao,WANG Wei-zhen,GAO Chong,XU Xiao-hui.Research on Recovery of Selenium from Sulfuric Acid Leaching Solution of Waste CIGS Material[J].Nonferrous Metals (Extractive Metallurgy),2021(11):65-70.
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