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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
发表期刊JOURNAL OF HAZARDOUS MATERIALS
ISSN0304-3894
卷号325页码:251-260
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.
关键词Raw Ilmenite Concentrate Chromite Oxidizing Roasting Reducing Roasting Modification Of Magnetic Property Magnetic Separation
文章类型Article
WOS标题词Science & Technology ; Technology ; Life Sciences & Biomedicine
DOI10.1016/j.jhazmat.2016.11.075
收录类别SCI
语种英语
关键词[WOS]PANZHIHUA ILMENITE ; MORPHOLOGICAL-CHANGES ; PHASE-TRANSITIONS ; IRON-ORE ; OXIDATION ; IMPURITIES ; REDUCTION ; PREOXIDATION ; PARTICLES ; MECHANISM
WOS研究方向Engineering ; Environmental Sciences & Ecology
WOS类目Engineering, Environmental ; Engineering, Civil ; Environmental Sciences
项目资助者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记录号WOS:000392165700025
引用统计
文献类型期刊论文
条目标识符http://ir.ipe.ac.cn/handle/122111/21878
专题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
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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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