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FEFU scientists have learned how to get gold from ash

A group of scientists from the Far Eastern Federal University has developed a technology for processing coal-based power plant waste into precious metals, the university's press service said.

The method allows gold and platinum to be produced from recycled ash, and chemically clean processing residues go to the production of several types of building materials: brick, roofing tiles, insulation, wall blocks, paving stones.

The research team found that on average, in every ton of combustible stone waste burned in power plants and boiler houses in the Far Eastern region, 2,5 grams of gold is contained, and this is in view of the fact that ore deposits of gold with an 2-3 grams of gold per ton are considered cost-effective.

“We offer complex processing of industrial waste with positive economic efficiency of large-scale industrial production,” said Andrey Taskin, Deputy Project Manager, Chief Specialist of the FEFU Industrial Cooperation Development Department. Until recently, there were no environmentally friendly technologies for extracting valuable ingredients from ash and slag.

The FEFU project is designed for two years and is supported by the Federal Target Program "Research and Development in Priority Areas of Development of the Scientific and Technical Complex of Russia for 2014–2020." The introduction of the technology will create a profitable and waste-free production.

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