南华大学学报（自然科学版）2017，Vol.31Issue(1)：11-16,27,7.
尾矿酸化及其对尾矿砂抗剪强度的影响研究
Study of Tailings Acidification and Its Influence onShear Strength of Tailings
摘要
Abstract
In order to reveal the effect of tailing acidification and its effect on the shear strength of tailings,the soaking test was carried out.The tailings sand samples were taken from a lead-zinc mine in Hunan Province,and the addition of hydrogen peroxide was used to promote the oxidation of sulfide (mainly pyrite) in tailings and produce acid.On the basis of the soaking test,a series of experiments on MLA(mineral liberation analyser)mineral composition analysis,particle analysis and shear strength were carried out.The results show that the content of pyrite decreased with the increase of the oxidation degree of pyrite,the content of alkaline substance (calcite and muscovite) decreased,the content of sand (coarse grain) decreased,the content of fine particle increased,the cohesion increased,the friction angle decreased,and the shear strength of tailing sand decreased.关键词
黄铁矿氧化/酸化/抗剪强度/动态浸渍/稳定性Key words
pyrite oxidation/acidification/shear strength/dynamic immersion/stability分类
矿业与冶金引用本文复制引用
熊冬霞,陈文昭,崔文平,朱四海,马煜琦..尾矿酸化及其对尾矿砂抗剪强度的影响研究[J].南华大学学报（自然科学版）,2017,31(1):11-16,27,7.基金项目
国家安监总局安全生产重大事故防治关键技术科技项目(2012-355) （2012-355）
湖南省研究生科研创新项目(CX2016B448) （CX2016B448）
