Innovative methodology for recovering titanium and chromium from a raw ilmenite concentrate by magnetic separation after modifying magnetic properties | |
Lv, Jin-Fang1,2,4; Zhang, Han-Ping4; Tong, Xiong1,2; Fan, Chun-Lin5; Yang, Wen-Tao3; Zheng, Yong-Xing1 | |
刊名 | JOURNAL OF HAZARDOUS MATERIALS |
2017-03-05 | |
卷号 | 325页码:251-260 |
关键词 | Raw ilmenite concentrate Chromite Oxidizing roasting Reducing roasting Modification of magnetic property Magnetic separation |
ISSN号 | 0304-3894 |
英文摘要 | Raw ilmenite concentrate containing Cr can be either as a resource or as one kind of the most hazardous solid waste. In order to recover titanium and chromium from the raw concentrate which was separated from the Promenade deposit, Gaza province, Mozambique, an innovative technology using modification of magnetic property followed by magnetic separation was proposed. Magnetic property, phase and surface morphology of the sample before and after oxidizing roasting were firstly characterized by magnetism, chemistry, XRD and MLA analyses to interpret the mechanism of oxidizing roasting of the ilmenite. Then, these factors such as oxidizing roasting temperature, residence time and magnetic induction affecting on magnetic separation performance were examined and the optimum process parameters were determined. A commercial concentrate containing 47.94% TiO2 and 0.23% Cr2O3 was obtained and the recovery of TiO2 and Cr2O3 was 78.52% and 5.42%, respectively. The tailing obtained was preliminarily concentrated by a high-intensity magnetic separator and a rough chromite concentrate was gained. In order to further purify the rough one, reducing roasting was carried out to transform the minerals containing hematite into the minerals containing magnetite, followed by a low-intensity magnetic separation. The effects of these parameters such as temperature, carbon powder dosage, holding time and magnetic induction on magnetic separation performance were investigated and the optimal conditions were determined. A concentrate containing 28.65% Cr2O3 was obtained and the total recovery of Cr2O3 was 84.18%. (C) 2016 Published by Elsevier B.V. |
WOS标题词 | Science & Technology ; Technology ; Life Sciences & Biomedicine |
类目[WOS] | Engineering, Environmental ; Engineering, Civil ; Environmental Sciences |
研究领域[WOS] | Engineering ; Environmental Sciences & Ecology |
关键词[WOS] | PANZHIHUA ILMENITE ; MORPHOLOGICAL-CHANGES ; PHASE-TRANSITIONS ; IRON-ORE ; OXIDATION ; IMPURITIES ; REDUCTION ; PREOXIDATION ; PARTICLES ; MECHANISM |
收录类别 | SCI |
语种 | 英语 |
WOS记录号 | WOS:000392165700025 |
内容类型 | 期刊论文 |
源URL | [http://ir.ipe.ac.cn/handle/122111/21878] |
专题 | 过程工程研究所_多相复杂系统国家重点实验室 |
作者单位 | 1.Kunming Univ Sci & Technol, State Key Lab Complex Nonferrous Met Resources Cl, Kunming 650093, Peoples R China 2.Kunming Univ Sci & Technol, Fac Land Resource Engn, Kunming 650093, Peoples R China 3.Yunnan XinLi Nonferrous Met Co Ltd, Kunming 650100, Peoples R China 4.KunMing Met Res Inst, Kunming 650093, Peoples R China 5.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China |
推荐引用方式 GB/T 7714 | Lv, Jin-Fang,Zhang, Han-Ping,Tong, Xiong,et al. Innovative methodology for recovering titanium and chromium from a raw ilmenite concentrate by magnetic separation after modifying magnetic properties[J]. JOURNAL OF HAZARDOUS MATERIALS,2017,325:251-260. |
APA | Lv, Jin-Fang,Zhang, Han-Ping,Tong, Xiong,Fan, Chun-Lin,Yang, Wen-Tao,&Zheng, Yong-Xing.(2017).Innovative methodology for recovering titanium and chromium from a raw ilmenite concentrate by magnetic separation after modifying magnetic properties.JOURNAL OF HAZARDOUS MATERIALS,325,251-260. |
MLA | Lv, Jin-Fang,et al."Innovative methodology for recovering titanium and chromium from a raw ilmenite concentrate by magnetic separation after modifying magnetic properties".JOURNAL OF HAZARDOUS MATERIALS 325(2017):251-260. |
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