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- Title
细粒铜铝混合精矿磁选分离机理及工业试验研究.
- Authors
杨若瑜; 彭远伦; 陈禄政; 梁泽跃; 张 波; 熊 涛
- Abstract
The copper-molybdenum bulk concentrate of a copper mine in Yunnan province has low molybdenum content and fine particle size, and there are some problems such as large dosage of flotation reagents for copper-molybdenum separation and difficult separation. Chalcopyrite and molybdenite have different magnetic properties. Based on the principle and method of magnetic medium optimization design, a new rod medium was designed. The capture behavior of chalcopyrite and molybdenite particles on the surface of rod medium monofilament was analyzed by COMSOL finite element software, and the critical magnetic induction required for magnetic separation of cop per-molybdenum bulk concentrate was predicted. On the basis of experimental study, the industrial production test was carried out by using SLon-500 pulsating high gradient magnetic separator, during which the separation of copper-molybdenum bulk concentrate with --45 ptm and ~28 pm accounting for 92. 90% and 70. 75% respectively and the grades of copper and molybdenum being 26.38% and 0.352% respectively were carried out. The qualified copper concentrate with yield of 2& 50%, molybdenum content of 0. 080 % and copper grade of 31. 50% and the molybdenum rougher concentrate with molybdenum grade of 0. 461% and molybdenum recovery of 93. 52% can be obtained, which lays a foundation for reducing the treatment capacity, reagent consumption and production cost in the subsequent flotation separation operation.
- Subjects
YUNNAN Sheng (China); MAGNETIC separation; ELECTROMAGNETIC induction; MAGNETIC separators; FLOTATION reagents; COPPER mining; MAGNETIC recording media; DISSOLVED air flotation (Water purification)
- Publication
Nonferrous Metals (Mineral Processing Section), 2022, Issue 2, p95
- ISSN
1671-9492
- Publication type
Article
- DOI
10.3969/j.issn.1671-9492.2022.02.013