Beneficiation method for separating fluorite and tungsten through flotation
A fluorite and flotation technology, applied in flotation, solid separation, etc., can solve the problems of low flotation recovery rate, complicated process, and difficult fluorite flotation, so as to ensure the recovery rate of fluorite, clean and environmentally friendly process, Effect of High Fluorspar Recovery Rate
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Embodiment 1
[0050] Give mine one. Fluorite priority flotation undergoes one roughing, one sweeping and five beneficiation to obtain fluorite concentrate, and the ore sequence in each operation returns to the previous operation. Add some hydrochloric acid to the rough separation of fluorite to control the pH value to 6.5; add inhibitor water glass or acid water glass to 300-1500 g / ton, starch dosage 300-800 g / ton, stir for 5 minutes; add collector modified oil Acid 800-1500g / ton g / ton, stirring for 2 minutes; add hydrochloric acid to control the pH value of 6.5, water glass or acid water glass 50-500 g / ton, starch 50- 400g / ton; add some hydrochloric acid to control the pH value to 6.5, water glass or acid water glass 200-400g / ton, starch dosage 200-400g / ton, add collector modified oleic acid 100- 300 g / t.
[0051] Then carry out scheelite (a small amount black tungsten) flotation roughing on the above fluorite flotation tailings, add regulator sodium carbonate 1000-2000 g / ton; inhibitor ...
Embodiment 2
[0054] The difference between the second embodiment and the first embodiment is that the ore feeder 2 is used as the ore feeder for flotation. Fluorite priority flotation undergoes one roughing, one sweeping and seven beneficiation to obtain fluorite concentrate, and the ore in each operation returns to the previous operation in sequence. Fluorite roughing, sweeping, and seven additions of selected agents, and pH control are the same as in Example 1.
[0055] The fluorite flotation tailings are subjected to mixed flotation of black and white tungsten, and regulators, inhibitors, activators, and collectors are added to the ore respectively. The types and contents of the agents are the same as those in Example 1. After one roughing, three times sweeping and three times beneficiation, black and scheelite mixed coarse concentrate products are obtained.
[0056] Obtain mineral processing index: fluorite concentrate contains CaF 2 90.35%, including WO 3 0.10%, the recovery rate...
Embodiment 3
[0058] The difference between the third embodiment and the second embodiment is that the fluorite concentrate in the second embodiment is further subjected to strong magnetic separation, and the grade of the fluorite concentrate is improved after the magnetic separation, and the tungsten content in the fluorite concentrate is reduced.
[0059] Obtain mineral processing index: fluorite concentrate contains CaF 2 93.91%, containing WO 3 0.08%, the recovery rate of raw ore fluorite is 50.7%; 3 2.59%, the recovery rate is 83.57%.
[0060] Embodiment one Compared with the current conventional flotation for the same ore feed, the recovery rates of tungsten and fluorite are increased by 4% and 39-48% respectively, the grade of tungsten coarse concentrate is equivalent, and the grade of fluorite concentrate is increased by 3%-16%.
[0061] Embodiment two Compared with the current production flotation index of the same ore, the recovery rate of fluorite is increased by 11.0%, a...
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