Copper Enrichment from Copper contained Iron Scrap by Liquid Phase Separation of the Fe-Cu-P System

Fe-Cu-P体系液相分离从含铜铁废料中富集铜

基本信息

批准号：
15560639
负责人：
YAMAGUCHI Katsunori
金额：
$ 2.43万
依托单位：
IWATE UNIVERSITY
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
2003
资助国家：
日本
起止时间：
2003 至 2004
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-15560639/
关键词：
Copper Iron Recycle Phase Diagram Precious Metal Distribution Ratio Liquid Phase Separation Fe-Cu-P System Cu-Fe-P系鉄スクラップ銅リサイクル炭素鉛

项目摘要

Amount of metal residue from incinerators or melting furnaces of incinerator bottom ash has been increased in Japan. The metal residue contains valuable metals such as copper, silver and gold. Main components of the metal residue are copper, phosphorus, silicon and iron of the remainder. Copper content is 5 to 20% and too low to recover the valuable metals in a conventional copper smelter, so a new approach to upgrading the valuable metals with phase separation in molten metal system was researched. Whereas the binary melt of iron and copper is miscible over all composition, the addition of carbon or phosphorus to the binary melt leads to phase separation between an iron phase and a copper phase. The copper phase absorbing the precious metals is feasible for refining in a conventional copper smelter. Fundamental information about the phase separation, recovery of copper and distribution ratio of the valuable metals are presented.Based on the mass-balance reaction and the solubility of copper in iron and iron in copper phases obtained in this study, copper recovery from the incineration metal residue containing iron and copper was calculated. Assuming that all copper in copper phase is recovered, and the copper dissolved in iron phase is loss, copper recovery is represented against copper grade in residue as shown in Fig. 8. When copper recovery by applying the phase separation of Cu-Fe-P system is carried out, copper recoveries from metal residues containing 10 and 30% copper are 35 and 80%, respectively. On the other hand, cooper recoveries with the phase separation of Cu-Fe-P-C system are 50 and 90% from metal residues containing 10 and 30% copper, respectively.The distribution ratios of silver, gold, palladium, platinum and rhodium are listed in Table II. We can recognize the gold, silver and palladium are enriched in copper phase, on the contrary rhodium is more distributed to iron phase than to copper. Platinum is comparatively distributed to both phases.

日本焚烧炉或焚烧炉底灰熔化炉产生的金属残渣量有所增加。金属残渣含有有价值的金属，例如铜、银和金。金属残渣的主要成分为铜、磷、硅，其余为铁。铜含量为5%~20%，在传统铜冶炼厂中铜含量太低，无法回收有价金属，因此研究了一种在熔融金属系统中通过相分离提质有价金属的新方法。尽管铁和铜的二元熔体在所有成分上都是可混溶的，但向二元熔体中添加碳或磷导致铁相和铜相之间的相分离。吸收贵金属的铜相可在常规铜冶炼厂中精炼。介绍了有关相分离、铜回收和有价金属分配比的基本信息。根据本研究中获得的质量平衡反应和铜在铁中的溶解度以及铁在铜相中的溶解度，从焚烧金属中回收铜计算了含有铁和铜的残留物。假设铜相中的铜全部被回收，并且溶解在铁相中的铜损失，则铜回收率与残渣中铜品位的关系如图8所示。当采用Cu-Fe-P相分离回收铜时系统进行后，含铜10%和30%的金属残渣中的铜回收率分别为35%和80%。另一方面，Cu-Fe-P-C体系的相分离从含铜10%和30%的金属残渣中铜回收率分别为50%和90%。列出了银、金、钯、铂和铑的分配比在表二中。我们可以看出金、银和钯富集在铜相中，相反铑更多地分布在铁相中而不是铜相中。铂相对分布在两个相中。

项目成果

期刊论文数量（8）

专著数量（0）

科研奖励数量（0）

会议论文数量（0）

专利数量（0）

Extraction of Valuable Metals from Incineration Metal Residue in Molten State

从熔融态焚烧金属残渣中提取有价金属

DOI：
发表时间：
2004
期刊：
REWAS'04, Global Symposium on Recycling, Waste Treatment and Clean Technology Vol.2
影响因子：
0
作者：
山口勉功;Katsunori Yamaguchi;Katsunori Yamaguchi
通讯作者：
Katsunori Yamaguchi

Impurity Removal from Carbon Saturated Liquid Iron Using Lead Solvent

使用铅溶剂去除碳饱和铁水中的杂质