职称论文发表

冶金物理化学,碳化后的含钛高炉渣盐酸浸出的实验研究

未分类 lzc 5105℃

碳化后的含钛高炉渣盐酸浸出的实验研究

职称论文发表期刊

Leaching of Carbothermic Reduced Titanium-bearing Blast Furnace Slag by Acid

摘要: 本研究以职称论文发表期刊攀枝花钢铁集团的含钛高炉渣为原料,在氩气气氛保护下进行高温碳热还原后,将剩余的渣用盐酸浸出。实验通过对不同温度,不同浓度的酸浸出研究,得到酸浸动力学曲线。结果表明:酸浸反应的控速环节是界面化学反应,得到反应的表观活化能为23-32 kJ/mol。
关键词: 含钛高炉渣; 酸浸; HCl; 动力学
ZHEN Yulan, ZHANG Guohua*, ZHOU Guozhi
(  State Key Laboratory of Advanced Metallurgy, University of Science and Technology Beijing, Beijing 100083;  )
Abstract: The kinetics of the leaching of carbothermic reduced titanium-bearing blast furnace slag in Panzhihua Iron and Steel Company with acid system under atmosphere pressure was studied. The results show that the temperature and concentration have significant influence on leaching of carbothermic reduced titanium-bearing blast furnace slag by acid. The experimental data of leaching indicate that the shrinking core model with chemical reaction controlled process is most applicable for the acid leaching. The apparent activation energy can be estimated to be from 23 to 32 kJ/mol. Furthermore, the main products are TiC and SiO2 after leaching.
Keywords: titanium-bearing blast furnace; leaching; HCl system; kinetics

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