| 氯氧化锆生产排放废硅渣中锆资源的回收 |
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| 引用本文： | 宋静,王雨,曲景奎,齐涛,吴江,陈忠锡,孙小龙.氯氧化锆生产排放废硅渣中锆资源的回收[J].再生资源与循环经济,2020(3):25-28. |
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| 作者姓名： | 宋静 王雨 曲景奎 齐涛 吴江 陈忠锡 孙小龙 |
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| 作者单位： | 湿法冶金清洁生产技术国家工程实验室中国科学院过程工程研究所;江西晶安高科技股份有限公司 |
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| 基金项目： | 国家自然科学青年基金项目(51704270);江西省重点项目(20161BBH80003);中科院重点部署项目(ZDRW-ZS-2018-1);中科院前沿科学重点研究项目(QYZDJ-SSW-JSC021)。 |
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| 摘 要： | 开展了氯氧化锆生产排放废硅渣中锆资源的回收工艺研究,结果表明,当废硅渣在50℃条件下溶解废碱液时,硅渣中夹带的未熔锆英砂可以沉积,回收率可达到98.5%以上。继续加热溶硅碱液,可溶锆可与硅产生凝聚,形成锆富集物沉淀,锆富集物中湿基的ZrO2含量最高可达6.5%,可溶锆的回收率在97%以上。回收得到的未熔砂和锆富集物可直接返回氯氧化锆主流程中再利用,从而实现硅渣中锆的资源化利用。
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| 关 键 词： | 氯氧化锆 废硅渣 未熔锆英砂 可溶性锆 |
Recovery of zirconium resources from silica residue discharged in production of ZrOCl2·8H2O |
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| SONG Jing,WANG Yu,QU Jingkui,QI Tao,WU Jiang,CHEN Zhongxi,SUN Xiaolong.Recovery of zirconium resources from silica residue discharged in production of ZrOCl2·8H2O[J].Recycling Research,2020(3):25-28. |
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| Authors: | SONG Jing WANG Yu QU Jingkui QI Tao WU Jiang CHEN Zhongxi SUN Xiaolong |
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| Institution: | (National Engineering Laboratory for Hydrometallurgical Cleaner Production Technology,Institute of Process Engineering,Chinese Academy of Sciences,Beijing 100190,China;Jiangxi Kingan Hi-tech Co.,LTD.,Nanchang 330513,China) |
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| Abstract: | The recovery process of zirconium resource from the waste silica slag discharged from the production of zirconium oxychloride was studied.The results showed that the un-reacted zircon sand can be deposited when the waste silica slag dissolved the waste alkali solution at temperature of 50℃,the recovery rate can reach over 98.5%.When the solution was heated at high temperature,the soluble zirconium can agglomerate and form precipitate,in which the content of ZrO2 is up to 6.5%,the recovery ratio is over 97%.The recovered zircon sand and zirconium precipitation can be directly returned to the process of zirconium oxychloride,which can realize the resource utilization of zirconium of silica slag. |
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| Keywords: | zirconium oxychloride silica residue un-reacted zircon soluble zirconium |
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