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101 / 2021-09-29 17:49:54
CEReS – Co-processing of Coal Mine & Electronic Wastes: Novel Resources for a Sustainable Future - Valuable products from mine tails after bioleaching
coal mine waste, electronic waste, bioleaching, ceramic product
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Joanna Calus Moszko / Central Mining Institute
Agnieszka Klupa / Główny Instytut Górnictwa
Aleksander Wrana / Glowny Instytut Gornictwa
The article presents the activities of the CEReS project "Co-Processing of Coal Mine and Electronic Wastes: Novel Resources for a Sustainable Future", financed by the Research Fund for Coal and Steel: RFCS-2015 to develop a co-processing solution for the treatment of acid-generating coal mine wastes and the recovery of (critical) raw materials of electronic wastes. Hard coal mining is one of the biggest producers of industrial waste in Poland, accounting for 25-30% of annual industrial waste production. Currently about 90% is used in geoengineering while the rest is deposited in the environment, with well over 600 Mt currently stockpiled. This has mainly been stored in heaps, which has resulted in increased costs of hard coal production and permanent adverse changes to natural environment. The Polish Act on Mining Waste  states that this waste should be recovered at the site of its production. Therefore, the management of hard coal mining and production wastes is a legal, environmental and economic challenge for the industry. Coal waste usually contains iron sulfides in the form of pyrite. When they end up in landfill, they are exposed to oxygen and moisture, the microbial breakdown of pyrite and other sulphide minerals can cause acid drainage in the mine (AMD). One of the goals of the CeRES project was also to develop new products based on bioleaching waste. Bioleaching can be used as a method of desulphurisation, removing the acid-generating potential and thus stabilizing the waste prior to reuse. These activities were carried out under the CEReS. The aim of the research was to transform environmentally harmful post-mining waste into a stabilised material for reuse. Research allowed the development of new directions for the utilisation of stabilised hard coal mine waste obtained as a result of a biological leaching process (desulphurisation). On the basis of stabilised waste, full value commercial products in the form of ceramic products, aggregates, additives to cements and polymer-concrete products were developed.The conducted works contribute to an increase in the amount of recovered waste, which reduces the amount of deposited waste.

 
重要日期

  • 会议日期

    11月21日

    2021

    至

    11月25日

    2021

  • 11月01日 2021

    初稿截稿日期

  • 11月05日 2021

    注册截止日期

主办单位
International Committee of Mine Safety Science and Engineering
承办单位
GIG
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