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Omolon hub "Polymetal" began to use a combined scheme for the extraction of precious metals
The Omolon hub of Polymetal in the Magadan Region began to use a combined scheme for the extraction of precious metals. The combined processing scheme will increase the extraction of gold and associated silver from ore.
The first phase was launched with the onset of the warm season in Birkachan. According to the press service of the Magadan branch of Polymetal, it is planned to process the accumulated reserves of gold ore by loading free capacity on the site. Crushed ore to a particle size of 30 mm is placed on the prepared site and irrigated with a special solution, this allows extracting up to 24% of the precious metals contained in it in the first year of irrigation.
Conventionally, the first stage will end with the end of the current season, after which all the spent ore will be sent to the Kubaka plant where the pre-leached ore will be crushed. According to Alexander Kurganov, senior master of ZIF KV, heap leaching allows cost-effective extraction of precious metals from ores with a low content of precious metals. For these purposes, an additional crushing and screening complex is purchased. At the second stage, maximum extraction to design values is planned to be achieved during processing at the Kubaka factory.
The introduction of a new approach to ore processing was preceded by thorough laboratory tests, in which manufacturers took part. They took technological samples characterizing the ore, which is supposed to be mined in the future.