以铁尾矿制备复相材料的实验研究  

Experimental Study on Multiphase Material Preparation from Iron Tailings

作　　者：张明熹[1] 谷莹蕾[1] 王志明[1] 李锋锋[1] 王伟[2] 王传璐[1] 范晓晨[1] 赵晨晨[1] 蔡永丰[1] 沈毅[3] 

机构地区：[1]河北联合大学轻工学院,唐山市环境功能材料重点实验室,河北唐山063009 [2]唐山科技职业技术学院冶金系,河北唐山063009 [3]河北联合大学材料学院,河北唐山063009

出　　处：《稀有金属与硬质合金》2015年第1期56-59,共4页Rare Metals and Cemented Carbides

基　　金：国家自然科学基金(51164025);河北省自然科学基金(E2010000928);河北省唐山市科技局项目(14130278a;131302107b);河北联合大学轻工学院大学生科技创新活动项目

摘　　要：以工业废弃物铁尾矿为原料,同时配以紫木节、苏州土、烧滑石、氧化铝粉为辅料,采用固相烧结法制备了堇青石-莫来石复相材料。通过测定复相材料的显气孔率、吸水率、线收缩率、抗折强度、抗热震性等性能指标,研究了堇青石与莫来石摩尔比、铁尾矿的含量、烧结温度等因素对复相材料性能的影响,并采用XRD、SEM手段等研究了复相材料的晶相组成和显微结构。研究结果表明:合成的复相材料的最大抗折强度为29.79 MPa,抗热震性达到72次,该试样以堇青石、莫来石晶相为主,另有少量的液相,无其他杂质相。Cordierite-mullite multiphase material was prepared by solid sintering with iron tailings as raw material,and knar clay,Suzhou soil,burn talc and alumina powder as auxiliary material.Performance indexes of the multiphase material were measured including apparent porosity,water absorption,linear shrinkage ratio,bending strength and thermal shock resistance,and then the effects were investigated of the factors on material performance such as molar ratio of cordierite to mullite,amount of iron tailings and calcination temperature.The crystalline phase and microstructure of the multiphase material were analyzed by XRD and SEM.The results show that the highest bending strength is 29.79 MPa and thermal shock resistance experiment reaches 72 times for the synthetic material mainly composed of cordierite and mullite crystals with a small amount of liquid but no other impurity phase.

关 键 词：堇青石-莫来石 复相材料 铁尾矿 显微结构 材料化 

分 类 号：X753[环境科学与工程—环境工程]