有色金属工程2024，Vol.14Issue(2) ：57-62.DOI:10.3969/j.issn.2095-1744.2024.02.008

含铂族金属铁合金碱焙烧脱硅预处理研究

Study on Pretreatment of Platinum Group Metal Ferroalloy by Alkali Roasting for Desiliconization

何啟涛 赵雨 张纯熹 赵家春 杜文晶 董海刚
有色金属工程2024，Vol.14Issue(2) ：57-62.DOI:10.3969/j.issn.2095-1744.2024.02.008
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含铂族金属铁合金碱焙烧脱硅预处理研究

Study on Pretreatment of Platinum Group Metal Ferroalloy by Alkali Roasting for Desiliconization

何啟涛 1赵雨 2张纯熹 3赵家春 3杜文晶 1董海刚3
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作者信息

  • 1. 昆明贵金属研究所,昆明 650101
  • 2. 贵研资源(易门)有限公司,云南玉溪 651100
  • 3. 昆明贵金属研究所,昆明 650101;云南贵金属实验室有限公司,昆明 650101
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摘要

针对含铂族金属铁合金结构复杂、难以溶解的问题,开展碱焙烧脱硅预处理研究以破坏稳定致密的合金结构.经试验验证,适宜的焙烧条件为:碱料质量比1.4、焙烧温度600 ℃、焙烧时间2.0 h,此条件下合金相完全分解,转化为NaFeO2和Na4SiO4,Na4SiO4经水浸脱除,所得水浸渣中硅含量降至0.84％.脱硅预处理后物料结构疏松、活性较高,易于酸溶除铁,有利于铂族金属精炼回收.

Abstract

In view of the complex structure and insoluble problems of platinum-containing group metal ferroalloys,alkali roasting desiliconization pretreatment was carried out to destroy stable and dense alloy structures.The experimental results show that the optimum roasting conditions are as follows:mass ratio of alkali to material 1.4,roasting temperature 600 ℃,roasting time 2.0 h,under these conditions,the alloy phase is completely decomposed into NaFeO2 and Na4SiO4,Na4SiO4 is removed via water leaching,and the silicon content in the obtained water leaching residue is reduced to 0.84％.After desiliconization,the material has loose structure,high activity,and is easy to remove iron via acid dissolution,which is conducive to the refining and recovery of platinum group metals.

关键词

铂族金属/铁捕集/含铂族金属铁合金/碱焙烧/脱硅

Key words

platinum group metals/iron trapping/ferroalloys containing platinum group metals/alkali roasting/desiliconization

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基金项目

云南贵金属实验室科技计划(YPML-2022050236)

云南省重大专项(202102AB080007-4)

出版年

2024
有色金属工程
北京矿冶研究总院

有色金属工程

CSTPCD北大核心
影响因子：0.432
ISSN：2095-1744
参考文献量21
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