河南信阳上天梯沸石矿工艺矿物学研究

Process Mineralogy Investigations on Zeolite Ore in Xinyang Shangtianti,Henan

为科学评价和开发利用信阳上天梯沸石矿资源,以上天梯沸石矿为对象,通过光学显微镜观测分析、X射线荧光光谱分析、X射线衍射仪分析、扫描电镜及矿物自动分析仪等分析测试技术,开展了矿石工艺矿物学研究。研究表明,上天梯沸石矿具备较高硅铝比(SiO_(2)/Al_(2)O_(3)),沸石矿组成矿物达25余种,主要组成矿物为斜发沸石(含量20%~85%),晶体发育良好,呈板片状或厚板状形态。斜发沸石颗粒90%以上粒径大于150μm,在+74μm、-74+45μm、-45μm的解离度分别为25.02%、27.99%、56.9%,连生关系主要以与钾长石、石英及蒙脱石的两相连生为主。

In order to scientific assess and proper utilize the zeolite resources of Xinyang Shangtianti,the mineralogy characteristics of zeolite ore were investigated,using various techniques including microscopic analysis,X-ray diffraction analysis,X-ray fluorescence spectrometer analysis,scanning electron microscope and automatic mineral identification and characterization system.The results show that zeolite ore of Shangtianti has high SiO_(2)/Al_(2)O_(3) ratio and the mineral species detected in zeolite ore are up to 25.Clinoptilolite is the dominant mineral specie(mineral content ranges from 20%to 80%).The crystals of clinoptilolite are well developed,show plate-like or thick plate-like structure.90%of the clinoptilolite crystals'size is greater than 150μm.The monomer dissociation degree of clinoptilolite at+74μm、-74+45μm、-45μm is 25.02%、27.99%、56.9%,respectively,and clinoptilolite has paragenetic relation with orthoclase,quartz and montmorillonite.