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Electroflotation Extraction of Titanium Oxide and Nitride Powders from Aqueous Solutions
Glass and Ceramics ( IF 0.6 ) Pub Date : 2020-09-15 , DOI: 10.1007/s10717-020-00272-x
A. V. Kolesnikov , V. S. Kasyanov , T. V. Davydkova , V. A. Kolesnikov

The kinetics of the electroflotation process of extracting TiO2 and TiN powders from wastewater was studied. As the experimental results show, stationary values are reached in 20 – 25 min. The electroflotation extraction ratio for titanium nitride powder without additives is low, 15 – 20%. The introduction of the anionic surfactant NaDBS and the cationic surfactant SeptaSAS increases the extraction ratio to 50 – 65% in NaCl and 45 – 60% in Na2SO4. The growth of the TiN extraction ratio is associated with the hydrophobization of the surface and growth of the particles of the dispersed phase. The highest extraction ratios are obtained by adding coagulants and coagulant-surfactant compositions. The two compositions Al3+–NaDBS and Fe3+–NaDBS work most effectively in Na2SO4 solutions; the extraction ratio is equal to 96%. High values of the extraction ratio are observed for TiO2 with the addition of the compositions Al3+ – surfactant and Fe3+ – surfactant.



中文翻译:

从水溶液中电浮选提取钛氧化物和氮化钛粉末

研究了电浮法从废水中提取TiO 2和TiN粉末的动力学。实验结果表明,在20 – 25分钟内达到了固定值。不添加添加剂的氮化钛粉末的电浮选率很低,为15 – 20%。引入阴离子表面活性剂NaDBS和阳离子表面活性剂SeptaSAS可将NaCl中的萃取率提高到50-65%,Na 2 SO 4中的萃取率提高到45-60%。TiN萃取率的增长与表面的疏水化和分散相颗粒的增长有关。通过添加凝结剂和凝结剂-表面活性剂组合物可获得最高的提取率。Al 3+ –NaDBS和Fe这两种成分3+ – NaDBS在Na 2 SO 4解决方案中最有效地工作;提取率等于96%。添加了Al 3+ -表面活性剂和Fe 3+ -表面活性剂后,TiO 2的萃取率较高

更新日期:2020-09-15
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