有色冶炼含砷废渣的脱砷现状及展望

随着我国有色冶金金属产量的逐渐增加，每年都会产生大量的含砷废渣、烟尘和废水，能否有效对其进行资源化和无害化处理，是制约企业能否持续健康发展的瓶颈问题。文章综述了当前国内外有色冶金工业中含砷废料脱砷的工艺和原理，主要包括火法、湿法和火法湿法联合脱砷工艺。火法脱砷主要是利用高温将As 以 As2O3 的形式脱除 ；湿法脱砷一般为用酸性或碱性介质进行浸出，使 As 以砷酸盐的形式脱除。对现有工艺存在的问题进行了讨论并对除砷新工艺提出展望。

Status and Prospect of Arsenic Removal from the Arseniccontaining Residue in Nonferrous Smelting Process

With the increase of non-ferrous metallurgical output, a large number of arsenic containing waste residue, smoke and wastewater will be produced every year, which will not only cause great harm to the ecological environment, but also harm people''s life and health. Therefore, it is necessary to treat them as resources and harmless. This paper reviews the process and principle of arsenic removal from arsenic containing waste materials in nonferrous metallurgical industry at home and abroad, mainly including pyrogenic process, hydro-process and combined process with pyrogenic process and hydro-process forarsenic removal. Among them, pyrogenic process arsenic removal is mainly in the form of As2O3 at high temperature; hydro-process arsenic removal is the leaching method that use acidic or alkaline medium usually to remove the arsenic in the form of arsenate. The problems in existing process and the new arsenic removal processes are discussed.