三水型铝土矿盐酸浸出过程的热力学研究（英文）
Saved in:
| Published in | 中国有色金属学报：英文版 no. 1; pp. 266 - 270 |
|---|---|
| Main Author | |
| Format | Journal Article |
| Language | English |
| Published |
2013
|
| Subjects | |
| Online Access | Get full text |
| ISSN | 1003-6326 |
Cover
| Bibliography: | 43-1239/TG Ai-chun ZHAO,Yan LIU,Ting-an Z HANG,Guo-zhi Lü,Zhi-he DOU Key Laboratory of Ecological Utilization of Multi-metal Intergrown Ores of Ministry of Education,School of Materials and Metallurgy,Northeast ern University,Shenyang 110004,China alumina; bauxite; gibbsitic bauxite; acid leaching; thermodynamics For the low-grade gibbsitic bauxite,the leaching rate of alumina is very low during the Bayer process.The acid leaching method is attracting more attention,and the hydrochloric acid leaching was developed rapidly.The mineral composition and chemical composition were investigated by X-ray diffraction analysis and semi-quantitative analysis.The thermodynamics of leaching process was analyzed.The results show that the major minerals in the bauxite are gibbsite,secondly goethite and quartz,anatase and so on.The acid leaching reactions of the bauxite would be thermodynamically easy and completed.Under the conditions that ore granularity is less than-55 μm,the L/S ratio is 100：7,and the leaching temperature is 373-383 K,the leaching time is 120 min and the concentration of HCl is 10%,both the leaching rates of Al and Fe are over 95%.The main composition of leaching slag is SiO2 which is easy for comprehensive utilization. |
|---|---|
| ISSN: | 1003-6326 |