Abstract:
The large amount of discharged nonferrous metal mine tailings occupy land, resulting in the waste of mineral resources. There are direct or potential safety risks and environmental hazards. Based on the analysis of the current research status of the comprehensive utilization of nonferrous metal mine tailings, the following utilization status of nonferrous metal mine tailings is described as follows: recovering valuable metals and nonmetallic minerals from nonferrous metal mine tailings; the nonferrous metal mine tailings are used as adsorbent, neutralizer and filter material in the field of environmental protection; nonferrous metal mine tailings used as raw material or auxiliary materials for geopolymer, molecular sieve, white carbon black and microsilica; nonferrous metal mine tailings used as materials for making brick, cement, concrete, ceramics and glass; nonferrous metal mine tailings used as soil amendment and chemical fertilizer making; nonferrous metal mine tailings used as underground filling materials. The problems and difficulties in comprehensive utilization are analyzed and discussed. It is necessary to continuously increase investment in scientific research and innovate existing comprehensive utilization technologies to reduce costs, technical difficulties and simplify processes. And it is necessary to explore new ways of utilization to expand the scope of use, consumption and increase the added value of tailings.