江西某铜尾矿制备发泡陶瓷的正交试验研究  

Orthogonal Experimental Study on Preparation of Foamed Ceramics from a Copper Tailings in Jiangxi

作　　者：杨航 李伟光 申士富 黄良金 龚维强 YANG Hang;LI Wei-guang;SHEN Shi-fu;HUANG Liang-jin;GONG Wei-qiang(Beijing General Research Institute of Mining & Metallurgy, BGRIMM R&D Center, Daxing 102628, Beijing, China;ChengmenshanCopper Mine, Jiangxi Copper Corporation Limited, Jiujiang 332000, Jiangxi, China)

机构地区：[1]北京矿冶科技集团有限公司,北京大兴102628 [2]江西铜业集团有限公司城门山铜矿,江西九江332000

出　　处：《铜业工程》2019年第2期78-86,共9页Copper Engineering

摘　　要：我国尾矿资源的综合利用一直是一个难题。在研究尾矿及辅助原料化学成分组成及X射线衍射分析基础上,通过前期探索实验及尾矿用量、废石-8用量、钠长石用量、发泡剂用量、粉磨时间、烧成温度和烧成时间的7因素3水平正交试验,最终确定了发泡陶瓷的最佳组成配方为尾矿用量55wt%,废石-8用量25wt%,钠长石用量20wt%,白云石掺量为5wt%,发泡剂掺量0.3wt%;最佳工艺流程为磨矿时间15min,烧成温度1200℃,保温时间60min。按照最佳工艺流程制备实验发泡陶瓷样块,其最终表观密度为605kg/m^3,抗压强度为5.3MPa,孔隙率为72.7%,吸水率为1.4%,为铜尾矿的高附加值综合利用提供了一个新的解决方案。The comprehensive utilization of tailings resources in China has always been a difficult problem. On the basis of studying the composition of chemical composition and X ray diffraction analysis of tailings and auxiliary materials, the optimum composition of foamed ceramics was determined by the 7 factors, 3 levels of orthogonal test, including the amount of tailings, the amount of waste stone, the amount of sodium feldspar, the amount of foaming agent, the amount of foaming agent, the grinding time, the firing temperature and the firing time, based on the study of the composition of chemical composition and the analysis of the chemical composition of tailings and auxiliary materials. The amount of tailings is 55wt%, the amount of waste stone is 25wt%, the amount of sodium feldspar is 20wt%, the amount of dolomite is 5wt%, and the amount of the foaming agent is 0.3wt%;the best process is grinding time 15min, the sintering temperature is 1200, and the heat preservation time is 60min. The final apparent density of ceramic sample was 605kg/m3, the compressive strength was 5.3Mpa, the porosity was 72.7%, and the water absorption rate was 1.4%. It provides a new solution for the comprehensive utilization of copper tailings with high added value.

关 键 词：铜尾矿 探索实验 发泡陶瓷 正交试验 组成配方 最佳工艺 

分 类 号：X75[环境科学与工程—环境工程]