Abstract
Gold in sulfide ores and technogenic formations after their processing is concentrated in the form of micro-dispersed particles. This article presents a study on the composition of the ultrafine gold particles, their size distribution, and some predicted gold properties. The studies were carried out using copper pyrite ore as an example. It was found that the content of metallic impurities in Au particles, which may appear during their formation under natural conditions, increases with a decrease in their size. The presence of copper in gold particles significantly lowers the melting point of the alloy. The data obtained are used to develop a technology for utilizing gold from technogenic formations of a similar type.
 Keywords: gold particles, copper, metallic impurities, alloy, radius of particle
Highlights
A significant part of the world’s gold reserves is concentrated in sulfide ores and technogenic formations after their processing: tailings and other
Existing enrichment methods do not allow the concentration of gold with such particle sizes
The predominant impurity found in every part of gold - copper
Summary
A significant part of the world’s gold reserves is concentrated in sulfide ores and technogenic formations after their processing: tailings and other. Gold is represented by microdispersed particles, the size of which usually does not exceed 10 microns. Such gold is extracted on modern processing equipment only after enlargement, which is possible in the process of heating and melting of technogenic raw materials [1]. How to cite this article: Alexey Mironovich Amdur, Sergei Andreevich Fedorov, and Anna Nikolaevna Matushkina, (2020), “Gold Allocation Forms in Sulfide Ore and Products of their Processing Enrichment” in IV Congress “Fundamental research and applied developing of recycling and utilization processes of technogenic formations”, KnE Materials Science, pages 31–36.
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