| 从制备电解银催化剂的废电解液中回收银 |
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| 引用本文： | 朱效中,梁灿忠,姚英文. 从制备电解银催化剂的废电解液中回收银[J]. 石油化工, 1988, 0(7) |
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| 作者姓名： | 朱效中 梁灿忠 姚英文 |
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| 作者单位： | 广西民族学院化学系 南宁 |
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| 摘 要： | 制造电解银催化剂的废液中的银用 NaCl 处理得到 AgCl 沉淀。AgCl 随即溶解于氨水,再用硫化物与之反应可得 Ag_2S 沉淀。在空气中高于570℃条件下将 Ag_2S 与 Na_2CO_3一起焙烧即可得到金属银。银的转化率可达99.0%,并且回收银中的铁含量低于10ppm。
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Recovery of Silver from Waste Electrolyte from Electrodeposited Silver Catalyst Manufacturing Process |
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| Abstract: | The waste electrolyte from electrodeposited silver catalyst manufacturing pro-cess is treated with NaCl solution to precipitate AgCl which is dissolved byaqueous NH_3.Silver is precipitated out by treating the solution with a sulfide toform an insoluble Ag_2S.The Ag_2S is converted to Ag by calcining with Na_2CO_3in air at above 570℃,99.0% of the silver containing less than 10ppm iron canbe recovered. |
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