Effect of Silver Content on Galena Flotation and Research Progress on Its Mechanism
Received date: 2021-01-11
Revised date: 2021-07-15
Online published: 2021-12-17
The resources of silver-bearing galena in China are large，but the comprehensive recovery of silver is lower. Mostly mining enterprises and scientific research institutes have conducted studies tending to optimization of technological process and reagent regulation. Although they have made a great deal of achievements，they could not dissolve completely the radical issues that the recovery of silver is low. Meanwhile，the effect of silver content on flotation performance of galena is less explored，which leads to be difficult for the concentrator to significantly improve silver recovery index，resulting in incomplete of resources utiliazation and resources waste.For this reason，this paper summarized the work done by predecessors in detail，such as the resource status of silver-bearing galena，the current flotation process of silver-bearing galena and the reagent system. At the same time，the effects of silver content on the flotation behavior of galena were summarized，such as the increase of the surface area of synthetic silver-bearing galena，the change of Zeta potential in the slurry during flotation process，the different adsorption amount of collector on the surface of galena，and the transformation of electrochemical characteristic peak，etc.. The mechanism of the effect of the silver content on the flotation behavior of galena were analyzed in detail from experimental to simulation，macroscopic to microscopic aspects，respectively. At the last，in view of the shortcomings of the current resource characteristics，technological process，reagent system and research mechanism，some reasonable suggestions are also put forward for the development of silver-bearing lead-zinc ore resources，such as exploring the technical scheme or technological process with high efficiency and low cost，developing unifying reagent of cost，efficiency，environmental protection，non-toxic and harmless and so on.
Fangyin NIU , Jianping JIN , Guobin WANG , Haijun WANG , Zhuoyue LAN , Jun CHEN , Ruikang WANG , Yaru WEI , Qingping ZHAO , Di YANG , Boqi LI . Effect of Silver Content on Galena Flotation and Research Progress on Its Mechanism[J]. Gold Science and Technology, 2021 , 29(5) : 749 -760 . DOI: 10.11872/j.issn.1005-2518.2021.05.015
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