Separation problem of scheelite flotation

White tungsten has good floatability and is usually treated by re-election-flotation combined method.

Scheelite flotation, and sulphide ore mainly to solve the problem of separation and non-metallic ore, specifically:

1. Separation of white tungsten from sulfide ore. Flotation of scheelite prior to the capture of sulfide minerals with xanthate. When floating white tungsten, a small amount of oxide and sodium sulfide are added to suppress a small amount of sulfide which is not floated.

2. White tungsten is separated from calcite and fluorite . Commonly used thick slurry high temperature method. First concentrate the slurry to a concentration of 60-70%, then add water glass, raise the slurry to above 80 °C, stir for 30-60 minutes, then dilute with water, float the scheelite at room temperature, the product in the tank is Fluorite and calcite.

3. Separation of white tungsten from quartz silicate. Using oleic acid as a collector and water glass as an inhibitor, quartz and silicate-like gangue can be inhibited and scheelite can be floated.

4. Separation of white tungsten from barite . Because water glass has similar inhibitory effect on white tungsten and barite, it is difficult to separate by single water glass. It is also necessary to use reversed flotation of barite with alkyl sulfate or sulfonate as collector under PH=1.5-3.0. , the scheelite is obtained in the tank.

5. Tungsten and tin separation. Available for electrification or flotation. When the flotation is separated, the scheelite is captured by the fatty acid, and the cassiterite is suppressed by the water glass.

6. Separation of tungsten and mo The molybdenum is first floated, and the scheelite is floated out with oleic acid. When the scheelite is floated, a large number of water glass heating selection methods are used.

Commonly used collectors for white tungsten are oleic acid, oleic acid soap, and 731 oxide oxide soap.

White had selected beneficiation plant selection method with a high temperature tungsten, production technology indicators: scheelite concentrate grade of 67.03%, tailings 0.095%, recovery 80.17%.

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