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›› 2011, Vol. 11 ›› Issue (4): 579-584.

• 反应与分离 • 上一篇    下一篇

玻纤工业废耐火砖中铂铑金属微波碱熔活化-水溶酸浸富集工艺

姚现召 张泽彪 彭金辉 常军 罗星 刘永鹤   

  1. 昆明理工大学冶金与能源工程学院 昆明理工大学冶金与能源工程学院 昆明理工大学材料与冶金工程学院 昆明理工大学材料与冶金工程学院 昆明理工大学材料与冶金工程学院 昆明理工大学材料与冶金工程学院
  • 收稿日期:2011-05-18 修回日期:2011-06-28 出版日期:2011-08-20 发布日期:2011-08-20
  • 通讯作者: 姚现召

Microwave-heated Alkali Activation, Water Dissolving and HCl Leaching of Used Firebrick from Glass Fiber Industry for Enrichment of Pt and Rh

YAO Xian-zhao ZHANG Ze-biao PENG Jin-hui CHANG Jun LUO Xing LIU Yong-he   

  1. Faculty of Metallurgy and Energy Engineering, Kunming University of Science and Technology Faculty of Metallurgy and Energy Engineering, Kunming University of Science and Technology Faculty of Materials and Metallurgical Engineering, Kunming University of Science and Technology Faculty of Materials and Metallurgical Engineering, Kunming University of Science and Technology Faculty of Materials and Metallurgical Engineering, Kunming University of Science and Technology Faculty of Materials and Metallurgical Engineering, Kunming University of Science and Technology
  • Received:2011-05-18 Revised:2011-06-28 Online:2011-08-20 Published:2011-08-20
  • Contact: YAO Xian-zhao

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摘要： 采用微波碱熔活化-水溶酸浸富集工艺处理玻纤工业废耐火砖料，使其中的铂铑金属在酸浸渣中得以富集. 通过微波加热碱熔与常规加热碱熔对比实验，考察了碱熔温度、保温时间、配碱量对碱熔过程的影响. 结果表明，微波辐照温度800℃、保温时间30 min、碱熔剂NaOH为样品质量的1.4倍时，碱熔反应进行彻底. 熟料经水溶后，在最优条件下酸浸，在盐酸浓度3 mol/L、浸出时间5 min、酸料比15 mL/g的条件下，料浆过滤性能良好，出渣率2.98%，铂铑金属可富集约33倍.

关键词: 铂, 铑, 富集, 废耐火砖, 微波, 碱熔活化

Abstract: The process of microwave alkali-activation, water dissolving and HCl leaching to beneficiate Pt and Rh from discarded firebrick of glass fibre industry was studied. Comparison tests of microwave alkali-activation and conventional alkali-activation for discarded firebrick were carried out to investigate the effects of activation temperature, heating preservation time and additive dosage on alkali-activation reaction. The results show that the reaction is completed thoroughly when the test sample is alkali-activated by microwave at 800℃ for 30 min, with additive NaOH dosage of 140%. After the clinker is dissolved in water, the residue is leached at the optimum conditions of HCl 3 mol/L, leaching time 5 min and ratio of HCl to residue 15 mL/g. Slurry is filtrated well. The residue generation rate is 2.98%, and Pt and Rh are beneficiated about 33 times.

Key words: Pt, Rh, enrichment, used firebrick, microwave, alkali-activation

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