高硫铜尾矿制备多孔陶瓷材料及其孔结构性能研究  

Preparation of Porous Ceramic Materials from High-Sulfur Copper Tailings and Its Pore Structure Properties

作　　者：李伟光 林荣琪 宋厚彬 李勇 杨浩 张艳平 徐海波 LI Weiguang;LIN Rongqi;SONG Houbin;LI Yong;YANG Hao;ZHANG Yanping;XU Haibo(Mining and Metallurgy Technology Group Co.,Ltd.,Daxing 102628,Beijing,China;Heilongjiang Zijin copper industry co.,ltd.,Qiqihaer 161041,Heilongjiang,China)

机构地区：[1]矿冶科技集团有限公司,北京大兴102628 [2]黑龙江紫金铜业有限公司,黑龙江齐齐哈尔161041

出　　处：《矿产保护与利用》2024年第2期91-98,共8页Conservation and Utilization of Mineral Resources

基　　金：矿冶科技集团有限公司青年科技创新基金(04-2238)。

摘　　要：以高硫铜尾矿为主要原料制备多孔保温陶瓷材料。首先对尾矿进行浮选和磁选脱硫,将尾矿中的总硫含量从6.40%降低至0.69%,然后通过条件实验研究了原料配比、粉磨时间、发泡剂用量对多孔陶瓷材料表观密度和抗压强度的影响。当脱硫铜尾矿用量为60%、钾长石用量为20%、钠长石用量为15%、硅微粉用量为5%、发泡剂SiC用量为0.3%、粉磨时间为40 min时,多孔陶瓷性能最佳,表观密度为412 kg/m^(3),抗压强度为2.94 MPa,采用工业CT对多孔陶瓷材料的孔结构进行分析,多孔陶瓷的总孔隙率为56.93%,其中闭合孔隙率高达56.51%,平均喉道长度为1357.1μm,有较高的封闭性,为多孔陶瓷提供了优良的保温隔热性能。The porous ceramics was preparated using high-sulfur copper-tailings as the main raw material.Firstly,flotation and magnetic separation desulfurization were carried out on the tailings to reduce the total sulfur content from 6.40%to 0.69%.The effects of raw material ratio,grinding time,and foaming agent dosage on the apparent density and compressive strength of porous ceramic materials were studied through conditional experiments.When the amount of desulfurization copper tailings was 60%,the amount of potassium feldspar was 20%,the amount of sodium feldspar was 15%,the amount of silicon micro powder was 5%,the amount of foaming agent SiC was 0.3%,and the grinding time was 40 minutes,the performance of porous ceramics was the best.The apparent density was 412 kg/m^(3),and the compressive strength was 2.94 MPa.The pore structure of porous ceramics was analyzed using industrial CT,and the total porosity of porous ceramics was 56.93%,with a closed porosity of up to 56.51%,The average throat length was 1357.1μm.It has high sealing performance,providing excellent insulation and thermal insulation performance for porous ceramics.

关 键 词：高硫铜尾矿 多孔陶瓷 工业CT 孔结构 

分 类 号：TD926.4[矿业工程—选矿]