Study on Technological Process Innovation of Non-Cyanide Leaching

Nowadays, there are many gold leaching processes, and the dominant one is cyanidation, but the virulence of cyanidation seriously endangers the environment and human health. In order to reduce environmental pollution and improve the recovery rate of gold, metallurgical workers put forward a variety...

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Main Authors: Chao Xu, Mingming Cai, Tengyue Gao, guangsheng Li, xingfu Zhu, Zhongbo Lu, Yanbo Chen, juntong Zhang, Guanglin Qin, Qiang Ji, Congquan Yu
Format: Article
Language:English
Published: EDP Sciences 2021-01-01
Series:E3S Web of Conferences
Online Access:https://www.e3s-conferences.org/articles/e3sconf/pdf/2021/43/e3sconf_icsce2021_02064.pdf
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spelling doaj-88a21635662145d3825fa0e7bf13a8882021-06-11T07:21:12ZengEDP SciencesE3S Web of Conferences2267-12422021-01-012670206410.1051/e3sconf/202126702064e3sconf_icsce2021_02064Study on Technological Process Innovation of Non-Cyanide LeachingChao Xu0Mingming Cai1Tengyue Gao2guangsheng Li3xingfu Zhu4Zhongbo Lu5Yanbo Chen6juntong Zhang7Guanglin Qin8Qiang Ji9Congquan Yu10Metallurgical Laboratory Branch of Shandong Gold Mining Technology Co., LtdMetallurgical Laboratory Branch of Shandong Gold Mining Technology Co., LtdMetallurgical Laboratory Branch of Shandong Gold Mining Technology Co., LtdMetallurgical Laboratory Branch of Shandong Gold Mining Technology Co., LtdMetallurgical Laboratory Branch of Shandong Gold Mining Technology Co., LtdMetallurgical Laboratory Branch of Shandong Gold Mining Technology Co., LtdMetallurgical Laboratory Branch of Shandong Gold Mining Technology Co., LtdMetallurgical Laboratory Branch of Shandong Gold Mining Technology Co., LtdMetallurgical Laboratory Branch of Shandong Gold Mining Technology Co., LtdMetallurgical Laboratory Branch of Shandong Gold Mining Technology Co., LtdMetallurgical Laboratory Branch of Shandong Gold Mining Technology Co., LtdNowadays, there are many gold leaching processes, and the dominant one is cyanidation, but the virulence of cyanidation seriously endangers the environment and human health. In order to reduce environmental pollution and improve the recovery rate of gold, metallurgical workers put forward a variety of new gold leaching methods, which can be roughly divided into two types: one is to develop pretreatment technology on the basis of traditional cyanidation method; The other is non-cyanide leaching of gold. Based on the existing Non-Cyanide leaching technology, this paper puts forward the process innovation of Non-Cyanide leaching technology, thiourea method and dilute nitric acid pre-oxidation treatment process. The thiourea non-cyanide leaching system was investigated. According to the leaching situation of gold and silver in raw ore, the innovative scheme of gold and silver leaching technology was selected. Compared with other treatment methods, thiourea method and dilute nitric acid pre-oxidation treatment technology overcome the danger of high pressure, and the nitrogen oxide gas produced in the dilute nitric acid oxidation process can be recycled, which basically does not pollute the environment.https://www.e3s-conferences.org/articles/e3sconf/pdf/2021/43/e3sconf_icsce2021_02064.pdf
collection DOAJ
language English
format Article
sources DOAJ
author Chao Xu
Mingming Cai
Tengyue Gao
guangsheng Li
xingfu Zhu
Zhongbo Lu
Yanbo Chen
juntong Zhang
Guanglin Qin
Qiang Ji
Congquan Yu
spellingShingle Chao Xu
Mingming Cai
Tengyue Gao
guangsheng Li
xingfu Zhu
Zhongbo Lu
Yanbo Chen
juntong Zhang
Guanglin Qin
Qiang Ji
Congquan Yu
Study on Technological Process Innovation of Non-Cyanide Leaching
E3S Web of Conferences
author_facet Chao Xu
Mingming Cai
Tengyue Gao
guangsheng Li
xingfu Zhu
Zhongbo Lu
Yanbo Chen
juntong Zhang
Guanglin Qin
Qiang Ji
Congquan Yu
author_sort Chao Xu
title Study on Technological Process Innovation of Non-Cyanide Leaching
title_short Study on Technological Process Innovation of Non-Cyanide Leaching
title_full Study on Technological Process Innovation of Non-Cyanide Leaching
title_fullStr Study on Technological Process Innovation of Non-Cyanide Leaching
title_full_unstemmed Study on Technological Process Innovation of Non-Cyanide Leaching
title_sort study on technological process innovation of non-cyanide leaching
publisher EDP Sciences
series E3S Web of Conferences
issn 2267-1242
publishDate 2021-01-01
description Nowadays, there are many gold leaching processes, and the dominant one is cyanidation, but the virulence of cyanidation seriously endangers the environment and human health. In order to reduce environmental pollution and improve the recovery rate of gold, metallurgical workers put forward a variety of new gold leaching methods, which can be roughly divided into two types: one is to develop pretreatment technology on the basis of traditional cyanidation method; The other is non-cyanide leaching of gold. Based on the existing Non-Cyanide leaching technology, this paper puts forward the process innovation of Non-Cyanide leaching technology, thiourea method and dilute nitric acid pre-oxidation treatment process. The thiourea non-cyanide leaching system was investigated. According to the leaching situation of gold and silver in raw ore, the innovative scheme of gold and silver leaching technology was selected. Compared with other treatment methods, thiourea method and dilute nitric acid pre-oxidation treatment technology overcome the danger of high pressure, and the nitrogen oxide gas produced in the dilute nitric acid oxidation process can be recycled, which basically does not pollute the environment.
url https://www.e3s-conferences.org/articles/e3sconf/pdf/2021/43/e3sconf_icsce2021_02064.pdf
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