收稿日期: 2014-10-27
修回日期: 2014-12-19
网络出版日期: 2015-08-06
Expermental Study on the Preparation of High Purity Gold by Chemical Reduction
Received date: 2014-10-27
Revised date: 2014-12-19
Online published: 2015-08-06
李光胜 , 王明双 , 马涌 . 化学还原法制备高纯金试验研究[J]. 黄金科学技术, 2015 , 23(2) : 103 -106 . DOI: 10.11872/j.issn.1005-2518.2015.02.103
The two stage aqua regia-two stage reduction process is studied for high-purity gold refining.The process includes pulverization of coarse gold,aqua regia,removing nitrate,reduction,smelting waste gas treatment and wastewater treatment.The practice shows that the quality of high-purity gold is stable and the purity of product is over 99.999%.Compared to electrolysis and solvent extraction,the two stage aqua regia-two stage reduction process has advantages of simple flow,short production cycle and convenient operation.The success of the two stage aqua regia-two stage reduction process has an important significance in improving the competition of enterprise and added value of product.Therefore,the two stage aqua regia-two stage reduction process is worth of promotion in gold manufacture enterprises.
Key words: high-purity gold; refining; aqua regia; reduction
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