White tungsten mixed flotation agent

Black scheelite Ore often associated with a rich in calcium, magnesium, diopside, tremolite, and calcium-rich calcite, fluorite, these gangue surface properties similar scheelite flotation behavior similar. The optimum flotation pH of black tungsten ore and scheelite is quite different. The optimal flotation pH of scheelite is relatively narrow, generally between 7 and 9. The best flotation pH of the wolframite is due to the collector. species varies, typically between 5 and 10, a complex low-grade fine fraction wolfram ore beneficiation genus very difficult to stone, and efficient use of modifier key collector flotation technology technical indicators.

The oxidizing ore collector has a relatively strong ability to capture scheelite, and the ability to capture scheelite is relatively weak. To achieve black and white tungsten mixed flotation, a combined collector is generally used. Commonly used collector combinations are combinations of fatty acid collectors, combinations of fatty acid collectors and chelating collectors.

Fatty acids and their soaps are commonly used collectors for scheelite. They also have a trapping effect on the wolframite. The fatty acid collectors have a long hydrocarbon chain, strong ability to capture, poor selectivity, and are not dissolved or dispersed in water. it is good. In order to meet the requirements of black and white tungsten mixed flotation, it is often necessary to modify the selectivity of fatty acid collectors. For the processing of fatty acids to improve their flotation performance, focus on two aspects: First, improve the solubility properties, improve the ability to resist low temperature, by introducing high polarity groups or introducing unsaturated bonds; second, to improve selectivity, It is the introduction of a selective group.

Fatty acid collectors have strong ability to collect and have poor selectivity. Chelating collectors have strong selectivity and weak hydrophobic ability. The combination of fatty acid collectors and chelating collectors can play a positive synergistic effect. Currently, chelated collectors commonly used fatty acid collector compositions have GYB with Guangzhou Institute nonferrous metal, and a number of application Hunan Shizhuyuan ore mines, ore which Shizhuyuan 1000t When the /d plant was commissioned, the actual recovery rate of tungsten has been stable at more than 65%. Cheng Xinchao et al. [83] used CF series chelate collector to float a refractory black and white tungsten mixed ore, and finally obtained a white tungsten concentrate containing 71.83% WO3 and a recovery rate of 56.23%. WO3 is 66.61%, and the recovery rate is 27.30% of black tungsten concentrate. The total tungsten recovery rate is 83.53%. In addition, Sun Wei et al [84] studied the new chelation agent F-305, Chen Xinlin et al [85] studied the new chelation collector TW series tungsten collector.

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