化工学报2012，Vol.63Issue(3)：991-995,5.DOI:10.3969/j.issn.0438-1157.2012.03.045
硫酸铵熔融反应法从含钛高炉渣中回收钛
Recovery of titanium from titanium-bearing blast furnace slag by ammonium sulfate melting method
摘要
Abstract
A melting reaction process was developed to transform the titanium in titanium-bearing blast furnace slag into water-soluble one, such as TiOSO4 by the treatment with ammonium sulfate and potassium bisulfate, to recover titanium. The effects of quantities of ammonium sulfate and potassium bisulfate added, reaction temperature and holding time on the recovery rate of titanium were investigated systemically. The experimental results showed that reaction temperature and holding time have a great impact on the recovery of titanium. The recovery rate of titanium was improved with an increase of reaction temperature and holding time. The optimum conditions of titanium recovery from titanium-bearing blast furnace slag were as follows: the mass ratio of slag to ammonium sulfate 1 '· 6, reaction temperature 350°C, and holding time 27 min. Under such conditions the recovery rate of titanium was up to 91. 7% and the evaporation loss rate of nitrogen from (NH4)2SO4 was 81. 5%. The residue obtained after recovery of titanium was mainly composed of CaSO4 · H2O, CaSO4 · 0. 5H2O, SiO2, a small amount of CaTiO3 and Ca2Al2SiO7. This study promises significant economic benefits for smelting enterprise.关键词
含钛高炉渣/二氧化钛/回收Key words
titanium-bearing blast furnace slag/titanium dioxide/recovery分类
矿业与冶金引用本文复制引用
王思佳,张悦,薛向欣,杨合..硫酸铵熔融反应法从含钛高炉渣中回收钛[J].化工学报,2012,63(3):991-995,5.基金项目
国家重点基础研究发展计划项目(2007CB613504). （2007CB613504）
