用含钛高炉渣制备高强度陶瓷材料  

Preparation of High Strength Ceramic Materials from Titanium-bearing Blast Furnace Slags

作　　者：李书钦 华绍广 李香梅 裴德健 汪大亚 LI Shuqin;HUA Shaoguang;LI Xiangmei;PEI Dejian;WANG Daya(Sinosteel Maanshan General Institute of Mining Research Co.,Ltd.,The National Engineering Technology Research Center of Solid Waste Treatment and Disposal for Metal Mines,National Engineering Research Center for Efficient Recycling of Metallic Mineral Resources,Maanshan 243000,Anhui,China)

机构地区：[1]中钢集团马鞍山矿山研究总院股份有限公司,国家环境保护矿山固体废物处理与处置工程技术中心,金属矿产资源高效循环利用国家工程研究中心,安徽马鞍山243000

出　　处：《矿产综合利用》2024年第6期47-53,共7页Multipurpose Utilization of Mineral Resources

基　　金：安徽省重点研究与开发计划项目(202104i07020008)。

摘　　要：这是一篇矿物材料领域的论文。为了探索含钛高炉渣在陶瓷领域的大宗和高值的应用,通过基于CaO-SiO_(2)-MgO(15%)-Al_(2)O_(3)相图设计,和对制备试样的物理性能、物相组成、微观结构分析,证实了用含钛高炉渣可以制备高强度的陶瓷材料。所制备的高强度陶瓷,属于低硅辉石质陶瓷,主要物相为辉石、碱玄岩钙钠长石、钙钛矿和铁板钛矿,其中辉石的含量随烧成温度的升高而逐渐增大,钙钛矿源自于原料,随烧成温度的提高而逐渐减少。钙钛矿分解后的Ti元素固溶于辉石中,但未能实现替代Si的位置,而是存在于M1的位置,Ti元素的固溶于辉石和碱玄岩中,提高试样的烧结温度。本文较佳的陶瓷试样中的含钛高炉渣掺量高达55%,其强度可达75.51 MPa,高于标准35 MPa;较佳烧结温度为1150℃,利于节能生产,论证了利用含钛高炉渣制备高强陶瓷材料的可行,为含钛高炉渣在陶瓷领域的应用提供理论基础。This is an article in the field of mineral materials.In order to explore the large-scale and highvalue application of titanium-containing blast furnace slags in the ceramic field,through the design based on CaO-SiO_(2)-MgO(15%)-Al_(2)O_(3) phase diagram,and the analysis of the physical properties,phase composition and microstructure of the prepared samples,the preparation of high-strength ceramic materials with titaniumcontaining blast furnace slag was realized.The prepared high-strength ceramics belong to low-silica pyroxene ceramics,and the main phases are pyroxene,albite,perovskite and brookite,in which the amount of pyroxene increases gradually with the increase of sintering temperature,while perovskite comes from raw materials and decreases gradually with the increase of sintering temperature.Ti element after perovskite decomposition is solid-soluble in pyroxene,which can′t replace Si,but exists in M1.Ti element is solidsoluble in pyroxene and alkali basalt,which increases the sintering temperature of the sample.The content of titanium-bearing blast furnace slags in the best ceramic sample in this paper is as high as 55%,and its strength can reach 75.51 MPa,which is 35 MPa higher than the standard.The optimum sintering temperature is 1150℃,which is beneficial to energy-saving production.The feasibility of preparing high-strength ceramic materials with titanium-containing blast furnace slag is demonstrated,which provides a theoretical basis for the application of titanium-containing blast furnace slags in ceramic field.

关 键 词：矿物材料 含钛高炉渣 高强陶瓷 辉石 钙钛矿 钛元素固溶 

分 类 号：TD981[矿业工程—选矿]