摘要
我国金属矿山在地面积存的尾矿已达 40多亿t,并以每年约 2 . 1亿t的速度在增长。金属矿山尾矿的主要特点为颗粒极细、数量极大、毒性很强、浓度很低。尾矿库占用大量土地 ,尾矿库工程事故 ,尾矿对地面环境和地下水源的污染等 ,迫切需要采用新技术开展对尾矿综合利用和治理的研究与开发 ,包括回收利用尾矿中的金属和非金属元素 ,利用尾矿制作建筑材料或磁性肥料 ;采用各种措施全面治理尾矿 ,如设立地下尾矿库 ,利用地面尾矿库作排土场 ,尾矿膏体地面无坝堆放与同步复垦等 ,其最终目标是建立“无尾矿山”
The Problems caused by tailings disposal in metal mines are becoming more serious day by day. The total amount of tailings deposited by the Chinese metal mines is more than 4 0 billion tones, and the number is still increasing by 0 21 billion tones per year. The main features of metal mine tailings are extremely fine of particles, huge guantities, strongly poisonous and low bulky density for transportation. Tailings dam occupies large area of land. Accidents may be caused by tailings dam failure. Environmental pollution and underground water pollution are caused by tailings.It is necessary to carry out studies utilizing or treating tailings with new technologies. The comprehensive utilization of tailings should include recovering metal and non\|metal elements from tailings, utilizing tailings to make building materials or magnetized fertilizer,etc. The treatment of tailings should include depositing tailings underground, utilizing tailings dam as a waste dump,and land reclaiming while depositing tailings paste. The final purpose of utilizing and treating tailings is to set up a “mine without tailings”. [
出处
《中国工程科学》
2000年第4期89-92,共4页
Strategic Study of CAE
关键词
金属矿山
尾矿
环境污染
地下尾矿库
尾矿膏体
无尾矿山
利用
综合治理
metal mines
tailings
environmental pollution
undisrground tailings disposal
tailings paste
mine without tailings
