Corrode Effect of High Na2O Slag on High Chromium Materials

摘要：

　　In order to study the application of high Na2O content coal in coal-water slurry gasifier,the static crucible method of high chromium brick was carried out with coal slag,which has different Na2O content.The results show that the melting temperature of coal slag could decrease first and then increase with the increase of Na2O content.When Na2O content is less than 2 wt%,Na2O·3CaO·6SiO2 formed in slag.When Na2O content is more than 4 wt%,(Mg,Fe)(Al,Cr)2O4 spinel formed in the slag,and with Na2O content increasing,spinel crystallization degree became more complete.In this experiment,the corrosion of the brick reaches the maximum when Na2O content is 2 wt%.When Na2O content is more than 4 wt%,the permeation degree of high chromium brick increases with the increase of Na2O content,and the depth of Z-layer and P-layerof 4 wt%Na2O content(1 mm and 4 mm)reduce obviously compare with 2 w%Na2O content(2.5 mm and 12 mm).

关键词： coal gasification furnace Na2O content high chromium brick the static crucible method

作者: FU Xiaohui ZHANG Peixiong LIU Kun ZHAO Shixian SUN Honggang CHEN Liugang YE Guotian

作者单位: Henan Key Laboratory of High Temperature Functional Ceramics,Zhengzhou 450001,China;Henan Province I Henan Key Laboratory of High Temperature Functional Ceramics,Zhengzhou 450001,China Sinosteel Luoyang Institute of Refractories Research Co.,Ltd.,Luoyang 471039,China

会议类型: 国际会议

会议名称: Conference on Refractories International 2018, CRI2018)(2018国际耐火材料学术会议)

会议地点: 杭州

会议语种:英文

页码: 1-5

在线出版日期: 2018-10-17（万方平台首次上网日期，不代表论文的发表时间）