您目前所在的位置:首页 - 期刊简介 - 详细页面

铁道科学与工程学报

JOURNAL OF RAILWAY SCIENCE AND ENGINEERING

Vol. 2    No. 4    November 1992

[PDF Download]    [Flash Online]

    

CR PROCESS FOR TREATING COMPLEX TIN DUSTS CONTAINING HIGH ARSENIC AND ANTIMONY
Tang Motang, Zhao Tiancong

Central South University of Technology,410083, China

Abstract:A new process for treating complex tin dusts containing high arsenic and antimony-CR chlorination-drydistillation process(here after, CR process) has been described. The key step of this process is the CR distilling arsenic process in which the tin dusts are leached with a medium concentration hydrochloric acid. A metal or a metallic sulfide is used as a reducing agent to reduce As(V) and Sb(V), and arsenic trichloride is simultaneously distilled from the leaching system. Then arsenic is precipitated for regenerated hydrochloric acid with the sulfide precipitation method. The prominent characteristics of the CR process are of great advantage in removing impurities such as Pb, As, Zn and Sb from the dusts in one step, recovering all valuable elements, eliminating the arsenic harm, and the consequent metallurgy of tin.

 

Key words: metallurgy of tin  chlorination metallurgy  distillation  arsenic harm

ISSN 1672-7029
CN 43-1423/U

主管:中华人民共和国教育部 主办:中南大学 中国铁道学会 承办:中南大学
湘ICP备09001153号 版权所有:《铁道科学与工程学报》编辑部
------------------------------------------------------------------------------------------
地 址:湖南省长沙市韶山南路22号 邮编:410075
电 话:0731-82655133,82656174   传真:0731-82655133   电子邮箱:jrse@mail.csu.edu.cn