强化尾矿系统技改增强选矿环保效果

针对梅山选矿一期生产过程中层矿系统存在的环保问题，总结选矿二期建设和生产中层矿系统技术改造后，提高环水利用串和矿山环保的成效。     

金尾矿的综合利用及微晶玻璃新材料技术

黄金矿山尾矿是一种复合矿物原料资源，可成为微晶玻璃等新材料的原料，将其开发利用，能为黄金工业充分利用资源、改善国土环境治理、提高综合经济效益开辟广阔途径。所开发的“球团包衣焙烧氧化法”专利新技术可向国内外矿山、企业提供技术服务及技术转让，与研究单位合作进行试验研究。     

提高尾矿废水利用率减少尾矿污染的措施及效果

详细介绍了寿王坟铜矿选矿厂在节水和利用尾矿废水减少环境污染方面所采取的措施及取得的效果。     

矿产二次资源的立体开发与综合利用

本就本钢歪头山铁矿多年对矿产二次资源与利用的实践，着重介绍了表外矿的回收、大块干选和尾矿再磨再选回收技术，利用尾矿砂生产彩色地面砖和承重砌块及废石加工石料等技术措施，充分证明了矿产干净人资源立体开发的合理性及效益性，为矿山的生态环境保护与可持续发展提供了借鉴与经验。     

矿业城市地质环境现状及保护措施

以矿业城市乌海市为例，分析了矿业城市地质环境现状、地质环境工作成效，提出了矿业城市地质环境保护措施。     

硫磷铝锶矿的综合利用

硫磷铝锶矿的综合利用１前言清平磷矿区位于四川盆地西部边缘，面积５４ｋｍ￣２，在磷矿开采中排出的硫磷铝锶矿，是未被开发利用的宝贵资源。硫磷铝锶矿为磷块岩的直接顶板，同磷块岩紧密共生（有时亦以夹石的形式出现于磷块岩中），矿体呈透镜状及似层状。厚矿碱溶Ｐ＿...     

硫化矿尾矿酸性矿山废水污染及释酸能力预测评价方法

酸性矿山废水是全球矿山面临的最严重的环境问题之一。文章介绍了评价硫化物尾矿产酸潜力的2种方法,即静态溶浸测试和动态淋滤测试。静态溶浸测试包括酸碱估算法和净酸生成法2种。还探讨了2种方法所存在的问题和局限性,并对进一步的研究进提出了设想。     

Diversity of free-living nitrogen-fixing microorganisms in wastelands of copper mine tailings during the process of natural ecological restoration

Biological nitrogen fixing is an important source of nitrogen input in the natural ecological restoration of mine wastelands. The diversity of nifH genes in tailings samples under di erent plant communities in Yangshanchong and Tongguanshan wastelands in Tongling, was analyzed using polymerase chain reaction-denaturing gradient gel electrophoresis (PCR-DGGE) approach. The nitrogen-fixing microorganism community in the upper layer of tailings of Tongguanshan wasteland discarded in 1980 showed higher Shannon-Wiener diversity index than that in Yangshanchong wasteland discarded in 1991. The diversity of nifH genes in Yangshanchong wasteland of copper mine tailings did not display a consistent successional tendency with development of plant communities during the process of natural ecological restoration. Phylogenetic analysis of 25 sequences of nifH gene fragments retrieved from the DGGE gels indicated that there were mainly two taxa of free-living nitrogen-fixing microorganisms, Proteobacteria and Cyanobacteria living in the wastelands investigated, most of which were unique and uncultured. Canonical correspondence analysis (CCA) based on the relationship between band patterns of DGGE profile and physico-chemical properties of tailings samples showed that the diversity of nifH genes in di erent tailing samples was mainly a ected by loss of ignition, water content, pH and available Zn contents of wastelands. The dominant plant species and development period of plant communities by ameliorating pH, reducing the toxicity of heavy metals, increasing organic matter and water content a ected the diversity and structure of the free-living nitrogenfixing microorganisms in wastelands of copper mine tailings.     

某尾矿坝稳定性数值分析

基于某尾矿库目前标高和最终标高的概化模型,在正常水位和洪水位两种工况下,采用GeoStudio软件中的SEEP/W模块进行渗流场模拟,并应用SLOPE/W模块对每种条件下尾矿坝的稳定性进行数值计算,得到最危险滑动面和最小抗滑稳定系数。结果表明,在排渗设施正常工作的情况下,尾矿坝边坡稳定性均满足规范要求的最小安全系数,但终高洪水位时坝体安全系数的富余不是很大。同时验证了尾矿坝安全系数随着库内水位的上升以及浸润线深度的变化规律。