摘要
为进一步提高镁碳砖的抗渣侵蚀性能，将纳米炭黑N220加入到基础配方（W）为镁砂88％、石墨12％并外加有一定量铝粉、铝镁合金粉和4％热固性酚醛树脂的镁碳砖中，研究了纳米炭黑加入量（分别占树脂质量的0、5％、10％、15％）对镁碳砖经200℃烘后和1400℃埋炭处理后物理性能以及1550℃下抗渣侵蚀性能的影响。结果表明：在镁碳砖中添加适量纳米炭黑会提高镁碳砖在1400℃埋炭处理后的致密度，进而提高其抗渣侵蚀性；加入纳米炭黑占树脂质量的15％时，镁碳砖试样的抗渣侵蚀性能最好，但综合整体性能认为，加入炭黑以占树脂质量的5％～10％为宜。
The basic formulation of MgO-C brick was 88% magnesia （in mass,the same hereinafter）, 12% graphite,extra aluminum powder,aluminum-magnesium alloy powder and 4% thermoset phenolic resin. In order to improve the corrosion resistance of MgO-C bricks, nano carbon black N220 was added into the basic formulation. Effects of nano carbon black additions （0,5% ,10% ,15% of resin mass） on the physical properties of MgO-C brick separately dried at 200 ℃ and carbon embedded fired at 1 400 ℃,and the corrosion resistance of the dried MgO-C bricks at 1 550 ℃ were studied. The results reveal that suitable addition of nano carbon black can enhance the density of MgO-C bricks after fired at 1400 ℃,and then improve the slag resistance;when the nano carbon black accounts for 15% of resin,the MgO-C bricks perform the best slag corrosion resistance;considering the overall performance,the optimal nano carbon black addition is .5% - 10%.
出处
《耐火材料》
CAS
北大核心
2015年第1期39-42,共4页
Refractories
关键词
纳米炭黑
镁碳砖
酚醛树脂
抗渣侵蚀性能
显微结构
nano carbon black
magnesia carbon bricks
phenolic resin
slag corrosion resistance
microstructure
