Purification of Oxygen-free Copper by Zone Refining

Zhang Xi; Li Huaqing; Zhao Jieyang; Zheng Wensheng; Ma Decai; Xiang Chaojian; Chen Zhongping

doi:10.15980/j.tzzz.2015.04.033

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Purification of Oxygen-free Copper by Zone Refining
Vol. 35, Issue 4, Pages: 446-448(2015)
Published： 2015 ，
DOI： 10.15980/j.tzzz.2015.04.033

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[1]张曦,李华清,赵解扬,郑文胜,马德才,向朝建,陈忠平.区域熔炼法提纯无氧铜工艺研究[J].特种铸造及有色合金,2015,35(04):446-448.

Zhang Xi, Li Huaqing, Zhao Jieyang, et al. Purification of Oxygen-free Copper by Zone Refining. [J]. Special Casting & Nonferrous Alloys 35(4):446-448(2015)
[1]张曦,李华清,赵解扬,郑文胜,马德才,向朝建,陈忠平.区域熔炼法提纯无氧铜工艺研究[J].特种铸造及有色合金,2015,35(04):446-448. DOI： 10.15980/j.tzzz.2015.04.033.

Zhang Xi, Li Huaqing, Zhao Jieyang, et al. Purification of Oxygen-free Copper by Zone Refining. [J]. Special Casting & Nonferrous Alloys 35(4):446-448(2015) DOI： 10.15980/j.tzzz.2015.04.033.

摘要

以无氧铜（纯度99.987 6%）为原料

采用水平感应区域熔炼法进行提纯

试验在氩气保护下进行。结果表明

经过13道次区域熔炼后

Pb、Sn、Ag、S等主要杂质元素的含量明显降低

铜的纯度提高至99.991 7%。因此

在提纯要求不高于5N的前提下

采用区域熔炼法提纯铜

技术可行、提纯效果明显。

Abstract

Purification of oxygen-free copper（99.987 6%）by horizontal zone refining under Ar atmosphere was carried out.The main inclusion elements such as Pb、Sn、Ag、S are reduced obviously

and the highest purity of Cu reaches 99.991 7%after 13 passes zone remelting.The purity of copper is increased from 3Nto 4N

which indicates feasibility of horizontal zone refining in obtaining high purity copper（≤5N）.