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with 99.84% yield. The stripping of loaded organic (LO) phases were achieved with dilute H2SO4. Key words: nickel laterite; manganese; nickel; TOPS-99; Cyanex 272 1 Introduction The requirement... when required, the organic phase was analyzed for metal ion concentration after filtering through 1PS phase separating paper and stripping with 1 mol/L HCl. For the construction of McCabe-Thiele plots......
leaching liquid beforehand by Naphthenic acid were put forward. The effects of feed acidity, extraction time, extraction phase ratio, extractant saponification degree on the extraction and stripping...:Vextractant=1:100) at speed of 6 mL/min at the same time.The U and Th in loaded organic can be stripped completely using 5 mol/L HCl solution in three-stage counter current stripping process with O......
酸浓度选为0.1 mol/L. 图8 硫酸浓度对锌反萃率的影响 Fig. 8 Effect of sulfuric acid concentration on stripping rate of zinc 2.2.2 锌的反萃等温线 在温度25 ℃,反萃时间10 min,负载有机相锌浓度为3.12 g/L,硫酸浓度为0.1 mol/L的条件下,采用相比法测定锌...99.9%,有机相中锌浓度小于0.01 g/L,锌反萃完全. 图9 锌的反萃等温线 Fig. 9 Stripping isotherm of zinc 2.3 萃取有机相的FT-IR光谱 对新鲜有机相和负载有机相进行红外光谱检测,其结果如图10所示. 图10 萃取有机相的FT-IR谱 Fig. 10 FT-IR spectra......
-loop models have been set up. Combined with the detected data from on-line analysis, the flow-rates of extracting, feeding, scrubbing and stripping solutions can be controlled in an optimum status......
, North China Institute Science of Technology, Beijing 101601, China)Abstract:Casting blast can greatly reduce the stripping cost and improve the production capacity of opencast coal mines. Key......
class="keys">Abstract: The optimum conditions of stripping fluorine for Sichuan bastnasite crude ore were determined by orthogonal experiments. Over 95% fluorine in the crude ore was stripped... for stripping fluorine of crude ore No. Stripping condition (more=10 g) ηF/% m (Na2CO3) /g θ/℃ t/min 1 1.0 600 30 34.5......
was studied. The mining environment reconstructing layering and stripping medium-length hole caving mining method was developed. The synergetic mining schemes design for the main ore layers were...落矿采矿法 Fig.3 Mining environment reconstructing layering and stripping medium-length hole caving mining method 图4 4分层矿体协同开采方案 Fig.4 Synergetic mining scheme of layer No.4 设计过程中如将A区和B区......
and separated effectively by precipitating Mg2+ before extraction and by scrubbing out K+ and Na+ repeatedly before stripping. The effects of the volume ratio of organic phase to aqueous extraction phase (O... valuable due to high selectivities toward Rb+ and Cs+ and easy stripping [11-13]. But up to now, phenolic extraction solvents have seldom been used to extract Rb+ and Cs+ from salt lake brine which......
capacity of 0.25–0.30 mmol/g-microcapsule. Fourthly, stripping experiment indicated that three hours were required to accomplish equilibrium for La3+ and Sm3+ while longer hours for Er3+. Finally, seven extraction-stripping cyclic experiments were performed for three mixed elements, the results of which revealed that Sm3+ and Er3+ maintained constantly high extraction amount whilst La3+ leveled off......
capacity of 0.25–0.30 mmol/g-microcapsule. Fourthly, stripping experiment indicated that three hours were required to accomplish equilibrium for La3+ and Sm3+ while longer hours for Er3+. Finally, seven extraction-stripping cyclic experiments were performed for three mixed elements, the results of which revealed that Sm3+ and Er3+ maintained constantly high extraction amount whilst La3+ leveled off......
