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| Study on New Process to Prepare Titanium Dioxide with DRI Titanium Slag |
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Received:June 06, 2018
Revised:June 13, 2018
Accepted:June 15, 2018
Published Online:September 19, 2018
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| DOI：doi：10.3969/j.issn.1007-7545.2018.10.004 |
| KeyWord:DRI titanium slag; sulfuric acid process; titanium dioxide |
| Author | Institution |
| Feng ailing |
北京矿冶科技集团有限公司 |
| Jiang xunxiong |
北京矿冶科技集团有限公司 |
| Zhao lei |
北京矿冶科技集团有限公司 |
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| Abstract: |
| DRI titanium slag is easy to recovery for utilization due to its high quality and strong activity, and can be replaced for ilmenite to produce titanium dioxide, which is the development trend of titanium dioxide by sulfuric acid process. However, compared with ilmenite, iron content of DRI titanium slag drops significantly, content of calcium, magnesium and aluminum rise obviously, which cannot be directly applied to the existing sulfuric acid process. A new process to prepare titanium dioxide with DRI titanium slag is explored based on process mineralogy characteristics. High-quality titanium dioxide is successfully prepared by two processes including combination of pre-purification of raw materials and sulfuric acid process, and combination of aluminum precipitation from acid solution and sulfuric acid process. |
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