Flotation Behavior Research on Collector Combination of Novel Fatty Acid and Chelating Collector on Wolframite and Gangue Minerals
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摘要:
螯合类捕收剂与脂肪酸类捕收剂的组合使用是黑钨矿浮选的重要研究方向。采用单矿物试验方法研究了GYB螯合捕收剂和731、GYR、TAB-3三种代表性脂肪酸类捕收剂联用对黑钨矿和脉石矿物浮选行为的影响，并采用表面电位测定、红外光谱测定方法，对GYB、TAB-3以及两种捕收剂联用的作用机理进行了探讨。结果表明：GYB与脂肪酸捕收剂联用，三种组合捕收剂均使黑钨矿浮选最高回收率提高至70%以上，捕收剂总用量降低约1/2；联用时三种脂肪酸捕收剂中TAB-3药剂对黑钨矿的捕收能力最强，黑钨矿回收率为78%，对萤石、石英、方解石脉石矿物的捕收能力最弱；GYB与TAB-3联用使黑钨矿表面动电位负移，黑钨矿表面红外光谱中GYB的C=N伸缩振动吸收峰和TAB-3的C-H伸缩振动峰均向高波数移动，捕收剂在黑钨矿的表面吸附能力比单独使用时增强，存在化学吸附形式。
Abstract:The combined use of fatty acid collectors and chelating collectors is an important research direction for wolframite flotation. The single mineral test method was used to study the effect of the combination of GYB chelating collector and three representative fatty acid collectors of 731, GYR and TAB-3 on the flotation behavior of wolframite and gangue minerals.Furthermore, the mechanism of combined use of GYB, TAB-3 and the two collectors were discussed by Zeta potential measurement, Infrared spectroscopy methods. The results showed that the combined use of GYB and fatty acid collectors increased the maximum recovery of wolframite flotation to above 70%, and reduced the total dosage of collectors by about 1/2; among the three fatty acid collectors, TAB-3 reagent had the strongest collecting ability to wolframite, which recovery of wolframite was 78%, and the weakest collecting ability to fluorite, quartz, calcite gangue minerals; the combination of GYB and TAB-3 made the surface potential of wolframite move negatively, and the absorption peaks of the infrared spectrum on its surface shift to a high wave number, such as the C=N stretching vibration absorption peak of GYB and the C-H stretching vibration peak of TAB-3. Then the adsorption capacity of the two collectors on the wolframite surface was stronger than the collector was used alone, and the adsorption form was chemical adsorption.
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Key words:
- wolframite /
- TAB-3 collector /
- flotation /
- mechanism
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