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 | |
2017-03-05 | |
Source Publication | JOURNAL OF HAZARDOUS MATERIALS
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ISSN | 0304-3894 |
Volume | 325Pages:251-260 |
Abstract | 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. |
Keyword | Raw Ilmenite Concentrate Chromite Oxidizing Roasting Reducing Roasting Modification Of Magnetic Property Magnetic Separation |
Subtype | Article |
WOS Headings | Science & Technology ; Technology ; Life Sciences & Biomedicine |
DOI | 10.1016/j.jhazmat.2016.11.075 |
Indexed By | SCI |
Language | 英语 |
WOS Keyword | Panzhihua Ilmenite ; Morphological-changes ; Phase-transitions ; Iron-ore ; Oxidation ; Impurities ; Reduction ; Preoxidation ; Particles ; Mechanism |
WOS Research Area | Engineering ; Environmental Sciences & Ecology |
WOS Subject | Engineering, Environmental ; Engineering, Civil ; Environmental Sciences |
Funding Organization | National Natural Science Foundation of China(51604131) ; Yunnan Province Collaborative Innovation Center Fund of Complex Nonferrous Metal Resources Comprehensive Utilization(KKPT201663011) ; Talent & Training Program of Yunnan Province(KKSY201563041) ; Testing and Analyzing Funds of Kunming University of Science and Technology(2016T20150055 ; 2016P2013101003) |
WOS ID | WOS:000392165700025 |
Citation statistics | |
Document Type | 期刊论文 |
Identifier | http://ir.ipe.ac.cn/handle/122111/21878 |
Collection | 多相复杂系统国家重点实验室 |
Affiliation | 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 |
Recommended Citation 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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