Recovery of gallium from phosphorus industry flue

• 作者: 戴玉杰 王静 许可 邓彤
• 来源期刊: 中国有色金属学会会刊（英文版）
• 学科: 工学
• 关键词: gallium flue dust phosphorus extraction
• 年，卷（期）: 2004,（6）
• 页码范围: 1199-1203
• 页数: 5页
• 分类号: TF843.1
• 语种: 英文

摘要

The flue dust generated during electric furnace production of elemental phosphorus was investigated for the recovery of gallium. Then the flue dust was slurried with water and blended with concentrated sulfuric acid, followed by ageing. The gallium in the dust was thereby converted to soluble sulfate. The factors affecting the dust curing were investigated to understand the process chemistry of the pretreatment. The optimal curing conditions are determined as follows: the mass ratio of dust to water and acid is 1: 1: 1, ageing temperature and time are 200 ℃ and 2 h, respectively. Almost all the gallium available to acid dissolution in the dust, about 900%00 gallium, can be extracted by leaching the cured dust at 80 ℃ for 1 h.