净水技术2023，Vol.42Issue(12)：110-118,9.DOI:10.15890/j.cnki.jsjs.2023.12.014
不同配比和粒度下黄铁矿和石灰石静态浸泡试验
Static Soaking Test of Pyrite and Limestone at Different Proportions and Particle Sizes
摘要
Abstract
In order to make further investigation for the characteristics and patterns of acidogenicity of pyrite in the Gongyi mining area,and to study the best solution for the treatment of acid mine water by neutralisation method in the area,a mixed leaching experiment was conducted with three grain sizes of pyrite and different proportions of limestone respectively,and the changes in pH,TDS,Con and anion concentration of the leaching solution were analyzed,as well as the changes in mineral composition and pore reference of the rock samples before and after the reaction.Results showed that:(1)Large amounts of SO2-4 could be generated from the leaching of pyrite in the Gongyi mine,and its value in the leaching solution exceeded the class Ⅲ groundwater standard.(2)The higher the proportion of pyrite,the lower the pH of the soaking solution,the higher the concentration of precipitated anions and cations,and the greater the changes in specific surface area and porosity;and the acidity of the soaking solution gradually decreased with the extension of the soaking time,indicating that the neutralizing effect of limestone was slowly exerted,and the addition of 25%～50%limestone could neutralize acidic water.关键词
黄铁矿/石灰石/静态浸泡试验/溶出规律/酸性矿井水Key words
pyrite/limestone/static soaking test/dissolution rule/acidic mine water分类
资源环境引用本文复制引用
李海伟,宋红娜,李利娟,廖佳佳,武成周,夏大平..不同配比和粒度下黄铁矿和石灰石静态浸泡试验[J].净水技术,2023,42(12):110-118,9.基金项目
国家自然科学基金资助项目(42172199) （42172199）
教育部博士点基金(200804600001) （200804600001）
河南省优秀青年科学基金资助项目(202300410168) （202300410168）
河南理工大学博士基金(SKB2022-12) （SKB2022-12）
