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The article deals with the theoretical basis of polymetal waste processing in chloride solutions. A schematic diagram is proposed for the processing of polymetal raw materials in a closed cycle. According to this scheme, the possibility is shown of obtaining metal products with highly developed nanostructure.

Methods of preparation and results of investigation into high porous spongy silver and the mor phology of its formation are presented. It is shown that this product is a nanostructure consisting of silver par ticles 100-200 nm in size, which accreted with each other into branched conglomerates. Examples of using nanostructured highly porous spongy silver are presented.

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