硫化铜矿流体包裹体组分释放及其在矿物表面吸附的机理

项目名称： 硫化铜矿流体包裹体组分释放及其在矿物表面吸附的机理

项目编号： No.51464029

项目类型： 地区科学基金项目

立项/批准年度： 2015

项目学科： 矿业工程

项目作者： 文书明

作者单位： 昆明理工大学

项目金额： 48万元

中文摘要： 硫化铜矿物溶解平衡理论计算、表面氧化和溶解试验得到的铜离子浓度，都不足实际硫化铜矿矿浆中铜离子初始浓度的百分之一。这说明并非公认的那样，表面氧化与溶解是矿浆中难免铜离子的主要来源。因此本项目以地球化学为依据，提出硫化铜矿物晶体内部数亿年前遗留的流体包裹体经磨矿而破裂，包裹体组分在矿浆中释放是难免铜离子主要来源的学术观点，并采用XRD、IRM、SEM、EDS检测研究硫化铜矿物流体包裹体的形状、尺寸、分布及丰度；通过压碎矿物，破裂流体包裹体，释放包裹体组分，采用超声波去离子水洗涤、ICP-MS和ICS检测溶液中的流体包裹体组分浓度。对试验检测结果进行对比分析，证明流体包裹体释放是难免铜离子的主要来源。通过CASTEP和DMo13模拟计算、实时动态表面电位测定，结合溶液组分浓度变化，研究硫化铜矿表面弛豫及铜离子在表面吸附的动力学规律，揭示流体包裹体组分影响矿浆组成及在表面吸附的机理。

中文关键词： 流体包裹体；组分释放；硫化铜矿物；表面吸附；作用机理

英文摘要： It has been confirmed that the copper ion concentration achieved by the dissolved balance theory calculation and the surface oxidation and dissolution test of copper sulfide mineral is less than one percent of actual copper ion concentration in copper sulfide mineral pulp. This doesn't show as public believed that the surface oxidation and surface dissolution of copper sulfide mineral is main origin of hard to avoid copper ions of the pulp.So the idea is now proposed based on earth chemistry that release of the components of the fluid inclusion in copper sulfide mineral by crushing and grinding mineral is main origin of hard to avoid copper ions in the pulp.The shape, size, distribution and abundance of the fluid inclusion in copper sulfide mineral will be studied by XRD, IRM, SEM and EDS.The fluid inclusion components will be released to the pulp by MM400 single ball mill breaking mineral and fracturing fluid inclusion. The fluid inclusion components of the pulp will be investigated by ultrasonic washing, deionized water collecting, ICP-MS and ICS detecting.It will be proved through the comparison of the test results that the component release in the fluid inclusion of copper sulfide mineral is the main source of the hard to avoid copper ions of the pulp.The essence and mechanism of copper ion adsorption on the surface of copper sulfide mineral will be investigated through the CASTEP and DMo13 computation of the mineral surface relaxation and the surface potential and ICP-MS detection. The internal rules of the release of the fluid inclusion components and its effect on the surface adsorption of the mineral will be revealed.

英文关键词： fluid conclusion;Component release;Sulfide Copper Mineral;Surface Adsorption;Mechanism