Proceedings of the 2023 5th International Conference on Civil Engineering, Environment Resources and Energy Materials (CCESEM 2023)

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Research on an Innovative Bromination Leaching System for Gold Leaching Technology

Authors
Chao Xu1, 2, *, Guangsheng Li1, 2, Xingfu Zhu1, 2, Mingming Cai1, 2, Zhongbo Lu1, 2
1Metallurgical Laboratory Branch of Shandong Gold Mining Technology Co., Ltd., Laizhou City, Shandong Province, China, 261400
2Postal address: No. 888, Shandong Province, Longbu village, Jincheng Town, Laizhou City, China
*Corresponding author. Email: xuchao84_08@163.com
Corresponding Author
Chao Xu
Available Online 14 December 2023.
DOI
10.2991/978-94-6463-316-0_6How to use a DOI?
Keywords
Non cyanide leaching; Bromination leaching; Leaching rate; Precious liquid gold recovery
Abstract

An innovative bromination leaching system for gold leaching technology research. The conventional liquid bromine+sodium bromide leaching system has an acidic pH value and high leaching temperature requirements. At the same time, liquid bromine is highly toxic, volatile, and has strong irritation and corrosiveness to the mucosa. To solve this problem, the laboratory has studied a new bromination leaching system that can make bromine basically non volatile while retaining its oxidation ability, and dibromodimethylhydantoin can be regenerated through electrolysis. Experimental research has shown that using a new bromination leaching gold system to treat a certain mine's flotation raw ore, the leaching rate is 83.43% under the conditions of grinding fineness of -200 mesh accounting for 86% and leaching time of 30 minutes, which is 10.86% higher than cyanide leaching (leaching time of 48 hours). The system achieves the same cyanide leaching rate under normal temperature and neutral pH conditions, and the leaching rate is higher under acidic conditions. The leaching system can use carbon adsorption and resin adsorption for gold recovery from precious liquids, with a carbon adsorption rate of 99.5% and a resin adsorption rate of 97.8%. This technological research has opened up new ideas and directions for non cyanide leaching.

Copyright
© 2023 The Author(s)
Open Access
Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.

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Volume Title
Proceedings of the 2023 5th International Conference on Civil Engineering, Environment Resources and Energy Materials (CCESEM 2023)
Series
Advances in Engineering Research
Publication Date
14 December 2023
ISBN
10.2991/978-94-6463-316-0_6
ISSN
2352-5401
DOI
10.2991/978-94-6463-316-0_6How to use a DOI?
Copyright
© 2023 The Author(s)
Open Access
Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.

Cite this article

risenwbib
TY  - CONF
AU  - Chao Xu
AU  - Guangsheng Li
AU  - Xingfu Zhu
AU  - Mingming Cai
AU  - Zhongbo Lu
PY  - 2023
DA  - 2023/12/14
TI  - Research on an Innovative Bromination Leaching System for Gold Leaching Technology
BT  - Proceedings of the 2023 5th International Conference on Civil Engineering, Environment Resources and Energy Materials (CCESEM 2023)
PB  - Atlantis Press
SP  - 43
EP  - 51
SN  - 2352-5401
UR  - https://doi.org/10.2991/978-94-6463-316-0_6
DO  - 10.2991/978-94-6463-316-0_6
ID  - Xu2023
ER  -