摘要
本文研究了铜矿石中矿物组分的赋存及解离特征,考察了高压电脉冲破碎前后矿物组分嵌布特性的变化规律,对比了不同矿物组分在高压电场中的场强分布,明晰了矿物组分解离对不同因素的响应行为。结果表明,高压电脉冲破碎后铜矿石中矿物组分嵌布粒度减小,呈现不同的解离特征,黄铜矿、黄铁矿、石英和云母的自由表面分别为39.40%,61.39%,57.40%和24.77%。矿物组分解离受介电常数、矿物组分嵌布尺寸及自身破碎行为的影响,较大的介电常数差异、较粗的嵌布尺寸和明显的自身破碎行为均会增大矿物组分自由表面。
This paper presents an analysis of the embedded and liberation characteristics of various mineral compositions in copper ore,as well as an investigation into the mineral association before and after high voltage pulse breakage.The electrical field strength distribution of various minerals under a high voltage electric field is compared,and the response behaviour of liberation is clarified.The results show that:the embedded size of the minerals decreases significantly after high voltage pulse breakage processing,exhibiting varied liberation characteristics.The free surfaces of chalcopyrite,pyrite,quartz,and mica are 39.40%,61.39%,57.40%,and 24.77%,respectively.The mineral liberation is affected by the dielectric characteristic,the embedded size and self-fragmentation mechanism.It is demonstrated that larger differences in dielectric constant,coarser embedding size,and significant selffragmentation mechanism all increase the free surface area of mineral components.
作者
闫光辉
孙宗盛
张明瑞
赵鹏飞
张博
YAN Guanghui;SUN Zongsheng;ZHANG Mingrui;ZHAO Pengfei;ZHANG Bo(College of Environmental Engineering,Henan University of Technology,Zhengzhou 450000,China;School of Chemical Engineering&Technology,China University of Mining and Technology,Xuzhou 221000,China)
出处
《贵州大学学报(自然科学版)》
2026年第1期47-53,92,共8页
Journal of Guizhou University:Natural Sciences
基金
河南省自然科学基金资助项目(252300423383)
河南省高等学校重点科研资助项目(24A610003)。
关键词
高压电脉冲
嵌布尺寸
解离特征
选择性破碎
场强分布
high voltage pulse
embedded size
liberation
selective breakage
electric field strength
