CaO-SiO_2-MgO-10%Al_2O_3-5%TiO_2体系液相线的实验测定  

Experimental determination of liquidus temperature of CaO-SiO_2-MgO-10%Al_2O_3-5%TiO_2 system

作　　者：石俊杰[1,2] 孙丽枫[1,2] 邱吉雨 王昭云[1,2] 张波[1,2] 姜茂发[1,2] SHI Junjie SUN Lifeng QIU Jiyu WANG Zhaoyun ZHANG Bo JIANG Maofa(School of Metallurgy, Northeastern University, Shenyang 110819, China Key Laboratory for Ecological Metallurgy of Multimetallic Ores of Ministry of Education, Northeastern University, Shenyang, 110819, China)

机构地区：[1]东北大学冶金学院,辽宁沈阳110819 [2]东北大学多金属共生矿生态化冶金教育部重点实验室,辽宁沈阳110819

出　　处：《中南大学学报（自然科学版）》2016年第10期3309-3314,共6页Journal of Central South University:Science and Technology

基　　金：国家自然科学基金资助项目(51104039;51304042);辽宁省教育厅科研项目(L2013114);辽宁省科学技术计划攻关项目(2012221013);中央高校基本科研业务费资助项目(N130602002)~~

摘　　要：针对CaO-SiO_2-MgO-Al2O3-TiO_2体系等温线等热力学数据的缺失等问题,采用热丝法(SHTT)熔化析晶性能测定仪对CaO-SiO_2-MgO-10%Al2O3-5%TiO_2五元渣系相图中MgO质量分数分别为5%,10%和15%特定成分下渣系的熔化温度进行测定,得到不同MgO质量分数下温度随碱度的变化规律,并依据同一初晶区内组分与熔化温度的热力学函数关系拟合得到该渣系1 250,1 300和1 350℃下的液相线。将本实验测定的渣系相图信息与文献中相同相图区域进行对比。研究结果表明:采用热丝法熔化析晶性能测定仪测定渣系温度并绘制等温线的方法是可行的。The lack of related thermodynamic research for liquidus temperature of CaO-SiO2-MgO-Al2O3-TiO2 system restricted the development and application of the system. The melting temperature was determined by the single hot thermocouple technique（SHTT） for the specified mass fractions of MgO of 5%, 10% and 15% in the CaO-SiO2-MgO-10% Al2O3-5%TiO2 phase diagram system reported in Slag Atlas, and 1 250, 1 300 and 1 350 ℃liquidus lines were constructed based on the thermodynamic relationship between composition and temperature in the same phase primary field. The result of present experiment was compared with the phase diagram determined in literature. The results show that the temperature determined by SHTT is able to get the correct liquidus line for slag system.

关 键 词：相图 液相线 熔化温度 热力学 热丝法(SHTT) 

分 类 号：O642.4[理学—物理化学]