文档介绍：第 40 卷第 5 期
2009 年 10 月
中南大学学报(自然科学版)
Journal of Central South University (Science and Technology)
复杂高硫渣中有价金属的分离工艺
倩 1,张宝 1,杨兴文 1, 2
李
(,湖南长沙,410083;
,江西贵溪,335424)
Oct. 2009
摘
要:采用煤油脱硫—氯盐浸出—分步水解法对复杂高硫渣中有价金属的分离进行研究。研究反应时间、反应
温度、液固比等因素对实验过程的影响。结果表明:在反应温度为 95 ℃,反应时间为 h,液固比分别为 11׃1
时进行 2 次连续煤油脱硫实验,硫的脱除率为 98%,脱硫渣中铋和锑富集,其含量约为复杂高硫渣的 6 倍。在硫
酸质量浓度和氯化钠质量浓度均为 150 g/L,液固比为 10׃1,反应温度为 65 ℃时,锑的浸出率为 96%,铋的浸出
率为 98%。采用分步水解,在氯盐浸出液中控制 pH= 水解沉锑;在沉锑后液中控制 pH= 水解沉铋,锑和铋
的沉淀率分别为 %和 98%。在整个优化工艺条件下,锑的回收率为 82%,铋的回收率为 96%。
关键词:氯盐浸出;分步水解;复杂高硫渣
中图分类号:TF811
文献标识码:A
文章编号:1672−7207(2009)05−1183−05
Separation and enrichment of valuable elements from
complex high-sulfur slag
LI Qian1, ZHANG Bao1, YANG Xing-wen1, 2
(1. School of Metallurgical Science and Engineering, Central South University, Changsha 410083, China;
2. Jiangxi pany, Guixi 335424, China)
Abstract: The separation and enrichment of valuable elements in plex high-sulfur slag by oxygen-leaching from
arsenic filter-cake were studied by the methods of re-desulfurization using kerosene, chloride-leaching, two-step
hydrolysis. The effects of reaction time, temperature, mass ratio between the liquid and solid on leaching process were
studied. The results show that the rate of desulfurization is 98% and the contents of Sb, Bi are enriched 6 times in the
re-desu