Research Progress of Large-scale Consumption of Copper Tailings in China
At present,the mount of China's copper tailings discharges exceeds 300 Mt/a,combined with the cumulative accumulation over the years,being a huge volume,so safety,environmental protection,economic,land and other pressures continue to rise.Therefore,in order to systematically and comprehensively understand the research progress of large-scale consumption of copper tailings in China,firstly,the resource endowment and occurrence characteristics of copper tailings were briefly introduced that copper extraction blocks in Dexing city of Jiangxi province,Tongling city of Anhui province,Chifeng city of Inner Mongolia and Daye city of Hubei province are the main production areas,and silicate minerals,SiO2 and Al2O3,as well as Fe2O3,CaO,Na2O and K2 O are the main components of copper tailings.Secondly,the research progress of large-scale consumption of copper tailings resources in manufacturing new materials and products,building materials,filling,synthetic silicon fertilizer,soil improvement and land reclamation is reviewed in detail,and the new materials and products mainly include glass,ceramics and permeable materials.In terms of building materials,brick,cement,concrete,roadbed,non-burning wall,ceramic wall panel and cast stone are mainly discussed.Finally,some reasonable suggestions were put forward for the current research phenomenon and future research planning,such as,when making building materials,it is necessary to ensure that the product has a certain solidification effect on heavy metal elements to prevent heavy metal elements from leaking out with water and polluting the surrounding environment.This paper can play a certain role in improving the comprehensive utilization of copper tailings resources and improving the ecological environment of mines.
copper tailingsresourceslarge-scale consumptionnon-metallic element mineralsrecoverycomprehensive utilization
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