新型锂辉石捕收剂DRQ-3的浮选性能及作用机理研究

采用实验室合成的新型两性螯合捕收剂DRQ-3对锂辉石进行浮选试验，同时借助红外光谱和Zeta电位检测手段对DRQ-3与锂辉石作用机理进行了研究。试验结果表明，在室温（26 ℃）、矿浆自然pH值（pH=8.5）、DRQ-3用量为50 mg/L的试验条件下，锂辉石的浮选回收率可达94.50%，DRQ-3对锂辉石显示出很强的捕收能力。动电位和红外光谱检测结果表明，锂辉石与DRQ-3不会发生静电吸附，捕收剂DRQ-3与锂辉石之间存在化学吸附，由锂辉石晶体结构推断主要是Al3+与DRQ-3中的活性基团OH-发生离子键合反应。

Flotation Behaviors and Mechanisms of a Amphoteric Chelated Type Collector DRQ-3 for Spodumene Flotation

The floatation experiments of spodumene were carried out by a new type of collector DRQ-3 synthesizing in the laboratory. The adsorption mechanism of DRQ-3 collector on spodumene surface was established by Zeta potential measurements， Fourier transforminfrared (FT-IR) spectrum， in conjunction with the results of flotation test. The results show that: in the condition of 26 ℃， pulp natural pH (pH = 8.5)， spodumene flotation recovery rate can reach 94.50% with 50 mg/L DRQ - 3 as collector， which indicated that DRQ-3 has a strong ability of collecting for spodumene. The results of FT-IR spectroscopy showed that there was a chemical adsorption between the collector DRQ-3 and spodumene. According to the crystal structure of spodumene， it was speculated that the chemical reaction between the spodumene and DRQ-3 was mainly depended on Al3+ and the active group in DRQ-3. The results of Zeta potential measurement indicated that the electrostatic adsorption between spodumeneand DRQ-3 was impossible. Combining with the results of FT-IR spectroscopy， it was revealed that the DRQ-3 collector had adsorbed on the spodumene in the form of chemical adsorption.