
基本信息:
- 专利标题: 一种从黑铜泥中回收砷的方法
- 专利标题(英):Method for recovering arsenic from black copper sludge
- 申请号:CN201710183404.2 申请日:2017-03-24
- 公开(公告)号:CN106893864A 公开(公告)日:2017-06-27
- 发明人: 刘维 , 梁超 , 焦芬 , 覃文庆 , 蔡练兵 , 杨康 , 郭波平 , 阮茗 , 陈世民
- 申请人: 中南大学 , 郴州金山冶金化工有限公司
- 申请人地址: 湖南省长沙市岳麓区麓山南路932号;
- 专利权人: 中南大学,郴州金山冶金化工有限公司
- 当前专利权人: 中南大学,郴州金山冶金化工有限公司
- 当前专利权人地址: 湖南省长沙市岳麓区麓山南路932号;
- 代理机构: 长沙市融智专利事务所
- 代理人: 张伟; 魏娟
- 主分类号: C22B7/00
- IPC分类号: C22B7/00 ; C22B30/04 ; C22B15/00
The invention discloses a method for recovering arsenic from black copper sludge. The method comprises the following steps: carrying out alkaline leaching on a black copper sludge powder under an oxidation condition, causticizing a leaching solution through lime to obtain calcium arsenate, and regenerating an alkaline leaching agent during the causticizing process and returning the alkaline leaching agent to the alkaline leaching; and carrying out vacuum reduction roasting on calcium arsenate to obtain metallic arsenic and calcium oxide, wherein metallic arsenic can be directly sold, and calcium oxide is returned to the causticizing process. The method realizes the open loop of arsenic during a black copper sludge treatment process, and obtains non-toxic metallic arsenic with an economic value, and meanwhile, alkali and calcium oxide are circulated in the flow, so that alkali consumption is furthest reduced; and the method is simple in process, low in cost, environment-friendly, and great in application prospect.
公开/授权文献:
- CN106893864B 一种从黑铜泥中回收砷的方法 公开/授权日:2018-07-17
IPC结构图谱:
C | 化学;冶金 |
--C22 | 冶金(铁的冶金入C21);黑色或有色金属合金;合金或有色金属的处理 |
----C22B | 金属的生产或精炼;原材料的预处理 |
------C22B7/00 | 处理非矿石原材料(如废料)以生产有色金属或其化合物 |