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| Research on Response Surface Methodology Optimize Sulfuric Acid Leaching of Titanium from Titanium-bearing Electric Furnace Slag |
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Received:November 23, 2020
Revised:December 11, 2020
Accepted:December 14, 2020
Published Online:May 13, 2021
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| DOI： |
| KeyWord:Response surface methodology; Titanium-bearing electric furnace slag; Sulfuric acid leaching; TiO2; vanadium titanomagnetite |
| Author | Institution |
| Nie Wenlin |
Department of Mathematics and Physics,West Yunnan University |
| Luo Bin |
School of Chemistry Engineering,Guizhou Minzu University |
| He yan bing |
Lincang Science and Technology Information Station |
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| Abstract: |
| About half of the TiO2 in Panzhihua area exists in the form of vanadium titanomagnetite, enters the iron concentrate and becomes slag through blast furnace ironmaking. However, it is difficult to recycle and results in waste of resources and environmental pollution. In order to leach Ti from titanium-bearing electric furnace slag, three technological parameters including leaching temperature, acid/solid ratio (mass ratio) and sulfuric acid concentration, as well as their interaction effects on the leaching rate of Ti in slag were systematically studied based on the response surface method, and a mathematical model between titanium leaching rate and process parameters was established. According to the analysis of the model, the influence of process parameters on the titanium leaching rate is as follow: acid-ore ratio (B)>temperature (A)>sulfuric acid concentration (C). The prediction results of the model showed that when the leaching temperature was 245.58 ℃, acid/solid ratio was 2.15, and sulfuric acid concentration was 90.94%, the leaching rate of Ti in slag was 96.14%. |
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