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首页> 外文会议>XXI International Mineral Processing Congress >LIQUID-LIQUID EXTRACTION OF FINE OXIDE PARTICLES USING CHELATING REAGENT AS COLLECTOR
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LIQUID-LIQUID EXTRACTION OF FINE OXIDE PARTICLES USING CHELATING REAGENT AS COLLECTOR

机译：用螯合剂作为集电体萃取细氧化物的液体

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As part of fundamental studies on the recovery of fine solid particles, liquid-liquid extraction, which is one of a variety of attempts to recover fine solids, was conducted. The efficacy of three different chelating reagents on the liquid-liquid extraction of fine oxide particles was examined. Isooctane and water were used as two liquid phases, and α-Fe_2O_3 and α-Al_2O_3 as test solids. It was found that the recovery of the fine oxide particles could be enhanced in a certain pH range, specific for the combination of the chelating reagent and oxide used. Adsorption tests using the oxide and chelating reagent with and without oil indicated that these pH ranges were in agreement with the pH ranges in which the percent adsorbed of chelating reagent is increased. To know the mechanism of the adsorption process and to optimize the physicochemical separation using the two-liquid system, the adsorption results were interpreted, based on the surface complexation model (SCM). It was found that the SCM was further applicable to the three-phase adsorption, and hence, to the liquid-liquid extraction.
机译：作为回收细固体颗粒的基础研究的一部分，进行了液-液萃取，这是回收细固体的多种尝试之一。考察了三种不同的螯合剂在液-液萃取细氧化物颗粒中的功效。异辛烷和水用作两个液相，α-Fe_2O_3和α-Al_2O_3作为测试固体。已经发现，在特定的pH范围内，对于所使用的螯合剂和氧化物的组合是特定的，可以提高细氧化物颗粒的回收率。使用有氧和无油的氧化物和螯合剂的吸附测试表明，这些pH范围与螯合剂的吸附百分比增加的pH范围一致。为了了解吸附过程的机理并使用两液系统优化理化分离，基于表面络合模型（SCM）解释了吸附结果。发现SCM还适用于三相吸附，因此适用于液-液萃取。

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