【作者】 柯勇； 闵小波； 柴立元； 梁彦杰； 张海静；

【Author】 KE Yong;MIN Xiaobo;CHAI Liyuan;LIANG Yanjie;ZHANG Haijing;School of Metallurgy and Environment, Central South University;Chinese National Engineering Research Center for Control and Treatment of Heavy Metal Pollution;

【机构】 中南大学冶金与环境学院； 国家重金属污染防治工程技术研究中心；

【摘要】 废渣中的重金属能在水热条件下与硫磺发生反应,生成可浮性好的金属硫化物。通过采用后续的浮选工艺,可以将重金属硫化物进行富集,实现重金属的资源化回收。该方法是一种重金属废渣资源化的新思路。本文以某冶炼废水处理工段所产生的废水中和渣为处理对象,采用水热硫化对其进行处理,并对水热硫化回收金属工艺中相关基础理论进行探讨。研究从水热体系下硫元素赋存状态、中和渣水热硫化过程特征、水热合成硫化锌晶体结构及生长规律等三个方面展开论述。本文可以为水热硫化工艺的开发和应用提供研究基础和科学依据。更多还原

【Abstract】 The heavy metals in the waste can react with sulfur and be converted into metal sulfides with good floatability through the hydrothermal sulfidation. For metal recovery, the synthetic metal sulfide can be enriched through subsequent flotation process. It is a novel way for the recovery of heavy metal from the slags. In this paper, the neutralization sludge, produced after heavy-metal-contained waste water treatment, was sulfidized in hydrothermal condition. The fundamental research about the hydrothermal sulfidation of heavy-metal-containing waste for metal recovery was carried out. The research involved three aspects, including the occurrence of sulfur in hydrothermal condition, the feature of hydrothermal sulfidation process, and the crystal structure and crystallization of synthetic zinc sulfide. Scientific foundation could be provided for the development and utilization of hydrothermal sulfidation technology.更多还原