菱铁矿的环境溶解及矿物相转化行为研究  

Research on the Environmental Dissolution and Mineral Phase Transformation Behavior of Siderite

作　　者：苏欣荣 苏瑞 张瀛予 高艳娇[1] 梁小龙 SU Xin-rong;SU Rui;ZHANG Ying-yu;GAO Yan-jiao;LIANG Xiao-long(School of Civil and Architectural Engineering,Liaoning University of Technology,Jinzhou 121001,China;Shenyang Urban Architecture Design Co.,Ltd.,Shenyang 110015,China)

机构地区：[1]辽宁工业大学土木建筑工程学院,辽宁锦州121001 [2]沈阳都市建筑设计有限公司,辽宁沈阳110015

出　　处：《辽宁工业大学学报（自然科学版）》2024年第5期326-330,共5页Journal of Liaoning University of Technology(Natural Science Edition)

基　　金：辽宁省自然科学基金博士启动项目(2022-BS-312)。

摘　　要：为了探明矿山环境对菱铁矿溶解的影响,研究了在不同pH、温度和共存阴离子强度条件下菱铁矿的环境溶解及矿物相转化行为。实验表明:pH变化会对菱铁矿的溶解率产生显著影响,这主要归因于高浓度的H^(+)促进了菱铁矿的溶解;温度升高会诱发菱铁矿发生矿物相转化,进而抑制菱铁矿的溶解,表现为85℃条件下部分菱铁矿转化为赤铁矿;共存阴离子强度增加会使菱铁矿表面覆盖一层盐离子,进而抑制菱铁矿的溶解。In order to study the effect of mine environment on the dissolution of siderite,the environmental dissolution and mineral phase transformation of siderite under different pH,temperature and coexisting anion strength were studied.The results show that the change of pH has a significant effect on the solubility of siderite,which is mainly attributed to the high concentration of H^(+)promoting the dissolution of siderite,and the mineral phase transformation of siderite can be induced by the increase of temperature,the results show that under the condition of 85℃,the partial siderite is transformed into hematite,and the siderite surface is covered with a layer of salt ions when the strength of coexisting anions is increased,thus the siderite dissolution is inhibited.

关 键 词：菱铁矿 溶解率 Fe离子浓度 颗粒粒径 

分 类 号：TQ13[化学工程—无机化工] X756[环境科学与工程—环境工程] TP311[自动化与计算机技术—计算机软件与理论]