Beneficiation and leaching study of a muti-Au carrier and low grade refractory gold ore

Li, W J; Song, Yong Sheng; Chen, Y; Cai, Liu Lu; Zhou, Gui Ying

doi:10.1088/1757-899x/231/1/012169

Cited by 3 publications

(3 citation statements)

References 3 publications

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“…Over the past decades, in view of the decline in the quality of mineral raw materials of the developed deposits, the proportion of gold recovered from refractory ores has increased, the effective processing of which requires the development of more complex and improved schemes, including preliminary processing before cyanidation, ensuring the most complete opening of gold grains [1][2][3].…”

Section: Introductionmentioning

confidence: 99%

Prerequisites for Processing a Foam Product in the Process of Bacterial Oxidation of Gold-Bearing Concentrates in a Separate Cycle

2021

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The recovery of gold from refractory ores and concentrates is a significant problem in the modern gold processing industry. The use of bacterial oxidation technology at the Navoi Mining and Metallurgical Combine (Uzbekistan) made it possible to increase the share of recoverable gold during the processing of refractory ores from the Kokpatas and Daugyztau deposits. However, during the operation of the biological installation, a problem arose of abundant foaming in bacterial oxidation reactors. This article is devoted to the issue of foaming during biooxidation and its negative impact on the oxidation process. Methods of combating foaming and the choice of the optimal solution, providing for the processing of bio-oxidation foam in a separate cycle, have been analyzed.

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Section: Introductionmentioning

confidence: 99%

Prerequisites for Processing a Foam Product in the Process of Bacterial Oxidation of Gold-Bearing Concentrates in a Separate Cycle

2021

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“…Everyone is well aware of the widespread use of gold in human life, the need for it only increases over the years. However, the reserves of gold that can be easily processed are inexorably depleted, and hard-to-process refractory ores are involved in processing [1][2][3]. At present, the processing of refractory gold sulfide ores and concentrates abroad is carried out using methods of preliminary roasting, autoclave or bacterial leaching followed by cyanidation [4,5].…”

Section: Introductionmentioning

confidence: 99%

Research of the Application of Roasting in the Processing of the Foamy Product of the Process of Bacterial Oxidation of Flotation Concentrate in a Separate Cycle

2021

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Among the methods of preliminary opening of refractory gold before sorption cyanidation, the technology of bacterial oxidation is widely used today. Although this technology has many advantages, the specialists of most enterprises around the world using this technology are faced with the problem of foaming in bio-oxidation reactors. This article discusses the possibility of using oxidative roasting in the processing of the foam product of the process of bacterial oxidation of flotation concentrate in a separate cycle.

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“…The abundance of gold in the earth's crust is only three parts per billion [1]. With the rapid depletion of easy-to-treat gold deposits and in order to ensure the sustainability of resources, more attention has been paid to research on the recovery and utilization technology of refractory gold deposits [2,3].…”

Section: Introductionmentioning

confidence: 99%

Mineralogy and Pretreatment of a Refractory Gold Deposit in Zambia

et al. 2019

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The technological mineralogy of a gold deposit located in North-Western province of Zambia was carried out by using X-ray fluorescence spectroscopy (XRF), X-ray diffraction spectroscopy (XRD), and scanning electron microscope (SEM). The results showed that gold was highly dispersed in gold-bearing minerals such as pyrite, arsenopyrite, and some gangues in the form of natural gold and electrum. The gold grade in the mineral was 15.96 g/t and the particle size distribution of gold was extremely uneven. Most of the gold particles were less than 10 μm and wrapped with gold-bearing minerals, making it difficult to achieve liberation during grinding. According to the characteristics of the refractory gold deposit, the gravity–flotation combined beneficiation process was used to recover the liberated coarse gold and the fine gold in the sulphides. The closed-circuit experiments obtained excellent indicators. The grade and recovery of gold in the gravity separation concentrates reached 91.24 g/t and 57.58%, respectively. The grade and recovery of gold in the flotation concentrates were 49.44 g/t and 33.36%, respectively. The total recovery of gold was 90.94%. The gravity–flotation combined beneficiation pretreatment process provided a feasible method for the refractory gold ore and ensured the effective recovery of gold.

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Beneficiation and leaching study of a muti-Au carrier and low grade refractory gold ore

Cited by 3 publications

References 3 publications

Prerequisites for Processing a Foam Product in the Process of Bacterial Oxidation of Gold-Bearing Concentrates in a Separate Cycle

Prerequisites for Processing a Foam Product in the Process of Bacterial Oxidation of Gold-Bearing Concentrates in a Separate Cycle

Research of the Application of Roasting in the Processing of the Foamy Product of the Process of Bacterial Oxidation of Flotation Concentrate in a Separate Cycle

Mineralogy and Pretreatment of a Refractory Gold Deposit in Zambia

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