贵州水城地区煤矸石中微量元素综合利用评价  

Evaluation on Comprehensive Utilization of Trace Elements From Coal Gangue in Shuicheng,Guizhou

作　　者：丁伟[1,2,3] 黄智龙[1,2] 周家喜[1,2] 谷静[1,3] 

机构地区：[1]中国科学院地球化学研究所矿床地球化学国家重点实验室,贵州贵阳550002 [2]云南省矿产资源开发工程技术研究中心,云南昆明650218 [3]中国科学院研究生院,北京100049

出　　处：《矿物学报》2011年第3期502-508,共7页Acta Mineralogica Sinica

基　　金：国家重点基础研究发展计划973项目(编号:2007CB411402);中国科学院重要方向项目(编号:KZCX2-YW-Q04-05)

摘　　要：煤矸石中富含各种微量元素,其中很多元素都具有综合利用潜力,如在高镓矸石中,微量元素Ga含量可达到工业利用品位。矸石中也富含一些对植物生长有益的微量元素,这有利于利用煤矸石制作肥料和矸石山的复垦,但矸石中有些微量重金属元素含量过高时也会对环境造成一定的影响。为了更深入的查明煤矸石中微量元素的利用潜力和对环境的影响程度,选择重要产煤区水城为研究区域,对多个煤矿的煤矸石开展综合利用研究工作,采用ICP-MS对煤矸石中微量元素进行分析,并对煤矸石微量元素利用进行了综合评价。通过分析,认为Ag、Co、Ga、Zr、Nb和Sc等6种微量元素有较大综合利用潜力,矸石中富含Cu、Zn、Co和Mo4种对植物生长有益的微量元素,但矸石中的Cu、Ni、Zn和Cr含量是对照背景值的2～3倍,可能会对环境造成一定的影响。Most trace elements contained in coal gangue have potential for comprehensive utilization, for instance, gallium can reach its industrial grade in some fertile gallium gangue. Trace elements in coal gangue are benefit for the growth of plant, which therefore can be added in the fertilizer and it is good for the reclamation of coal gangue hill. However, the over-contained trace elements are bad to the environment. Shuicheng, the important coal production re- gion in Guizhou is selected as our research target region. The coal gangue of several coal mines was studied for poten- tial utilization and their influence to environment. Trace elements were analyzed by using ICP-MS, and the compre- hensive appraisal has been carried out. Our analysis suggests that in terms of the coal gangue, argentum, cobalt, gal- lium, zirconium, neodymium and scandium have the potential for comprehensive utilization, and copper, zinc, co- balt and molybdenum are helpful for the growth of plant. By contrast, contents of copper, nickel, zinc and chromium are double- triple of the background level, which might cause bad impacts on the environment.

关 键 词：煤矸石 微量元素 综合利用评价 贵州水城 

分 类 号：TD983[矿业工程—选矿] TD984