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- Title
STUDY ON PRE-CONCENTRATION EFFICIENCY OF WOLFRAMITE FROM TUNGSTEN ORE USING GRAVITY AND MAGNETIC SEPARATIONS.
- Authors
Dongfang LU; Yuhua WANG; Tao JIANG; Wei SUN; Yuehua HU
- Abstract
Pre-concentration is effectively applied in recovering wolframite from tungsten ore, due to its benefits of further upgrading tungsten ore and improving separation efficiency. The most important preconcentration techniques for tungsten ore include gravity separation and magnetic separation, based on the fact that there are appreciable differences, between the desired wolframite and the gangue minerals, in density and magnetic susceptibility. This study investigated the separation efficiency of gravity preconcentration (Falcon Concentrator) and high-gradient magnetic pre-concentration (SLon VPHGMS) for the beneficiation of a Canada tungsten ore. It is a low-grade type of ore with high silica and arsenic content, and an average content of WO3 is about 0.45%. The optimum conditions for different operational parameters of two pre-concentration separators were studied on this low-grade material. The results presented in this paper suggested that although both pre-concentration techniques were effective for producing pre-concentrates containing high WO3, magnetic pre-concentration showed significantly better separation efficiency. Over 90% of the feed was rejected as the final tailings, meanwhile, over 85% of arsenic minerals were removed with tailings, while the WO3 loss was less than 15%.
- Subjects
CHEMICAL preconcentration; WOLFRAMITE; TUNGSTEN ores; MAGNETIC separation of ores; ORE-dressing
- Publication
Physicochemical Problems of Mineral Processing, 2016, Vol 52, Issue 2, p718
- ISSN
1643-1049
- Publication type
Article
- DOI
10.5277/ppmp160216