期刊
POWDER TECHNOLOGY
卷 389, 期 -, 页码 96-103出版社
ELSEVIER
DOI: 10.1016/j.powtec.2021.05.017
关键词
Collector; Flotation; Sebacoyl hydroxamic acid; Separation; Wolframite
资金
- Natural Science Foundation for Distinguished Young Scholars of Jiangxi province [20192BCB23016]
- Jiangxi Double Thousand Plan [JXSQ2019201114]
- National Natural Science Foundation of China [U1607108, 51774152]
- Natural Science Foundation of Jiangxi, China [20202ACBL213008, 20202ZDB01005, 20171BCB18002]
- Program of Qingjiang Excellent Young Talents, Jiangxi University of Science and Technology
In this study, a new hydroxamic-acid molecule, sebacoyl hydroxamic acid (SHA), was synthesized and used as a collector for wolframite flotation. The results showed that SHA collector achieved higher wolframite recovery at a lower dosage compared to the traditional collector, and it also eliminated the need for lead ions during the flotation process.
In this study, a new hydroxamic-acid molecule - sebacoyl hydroxamic acid (SHA) was synthesized and characterized. It was the first time that SHA with dual hydroxamic acid groups of crab structure was used as a collector for wolframite flotation, and its collecting ability was compared with the traditional collector benzohydroxamic acid (BAH) in the presence or absence of lead ions. In micro-flotation experiments, the wolframite recovery using 4 x 10(-4) mol/L SHA collector alone was 30% higher than that using 4 x 10(-4) mol/L BHA collector and 1 x 10(-4) mol/L Pb(NO3)(2) activator. The results of bench-scale flotation experiments showed that the WO3 recovery of wolframite concentrate with 180 g/t SHA was 10.05% higher than that with 360 g/t BHA and 300 g/t Pb(NO3)(2). Therefore, using SHA collector with crab structure for wolframite flotation can not only improve the separation index at a low dosage, but also eliminate the use of Pb(NO3)(2). (C) 2021 Elsevier B.V. All rights reserved.
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