Spodumene heavy medium beneficiation

Since little spodumene gangue minerals associated with the difference in density, using a general jigging, shaking mineral processing and beneficiation spiral reselection method is unsuitable spodumene ore sorting. However, heavy media beneficiation or heavy liquid beneficiation is an effective method for semenite ore. In the production of lithium mines in South Dakota and North Carolina, heavy medium dressing has been used. In South Dakota it was prepared in a processing plant -200 mesh silicon iron weighting agent and the density was 2.7 g / cm ³ medium, heavy medium using a cone concentrator sorting plant of 3.3 to 3.8 mm spodumene ore, As a result, the produced spodumene concentrate grade reached a 5.31% Li ₂ O recovery rate of 78%. In North Carolina Gold Mine wire except heavy medium beneficiation machine taper, used heavy medium cyclone sorting finer size range spodumene. Further U.S. Bureau of Mines with further beneficiation art tetrabromo ethane as the heavy liquid (density of 2.9529 g / cm ³⁾ of the heavy liquid cyclone sorting of successive trials spodumene ore, quite satisfactory results are achieved, the feed size For -35 mesh, containing 20% ​​of lithium phosgene, the obtained concentrate contains 92~95% of lithium pyroxene, the recovery rate is 86~89%, and the recovery rate of heavy liquid is above 95%. As long as there is good protection, Tetrabromoethane can be used on a large scale.

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