不同碳源对低碳镁碳砖性能的影响  

Effects of different carbon sources on properties of low carbon MgO-C bricks

作　　者：于凌月 魏军从 杨春 涂军波 姜乐 王义龙 张连进 Yu Lingyue;Wei Juncong;YangChun;Tu Junbo;Jiang Le;Wang Yilong;Zhang Lianjin(Hebei Province Key Laboratory of Inorganic Nonmetallic Materials,North ChinaUniversity of Science and Technology,Tangshan 063210,Hebei,China;不详)

机构地区：[1]华北理工大学河北省无机非金属材料重点实验室,河北唐山063210 [2]唐山市国亮特殊耐火材料有限公司,河北唐山063021

出　　处：《耐火材料》2020年第4期338-342,共5页Refractories

基　　金：河北省自然科学基金钢铁联合研究基金(E2017209094);河北省自然科学基金资助项目(E2017209164)。

摘　　要：以粒度为5~3、3~1、≤1 mm的电熔镁砂为主要原料,热固性液体酚醛树脂为结合剂,经800、1000、1200和1400℃分别在埋碳和空气气氛下保温3 h制备了低碳镁碳砖试样,研究了碳源种类(鳞片石墨、炭黑N220、高温沥青)对低碳镁碳砖性能的影响。结果表明:在本试验条件下,加入沥青的镁碳砖试样强度最大;加入石墨的镁碳砖试样具有最佳的抗氧化性能,但强度要稍差于加入沥青的;加入炭黑的镁碳砖试样高温抗折强度最低,其抗氧化性能介于加入石墨的与沥青的之间。Low carbon MgO-C bricks were prepared using the fused magnesia(particle size of 5-3,3-1,≤1 mm)as the main raw material,thermosetting liquid phenolic resin as the binder,firing at 800,1000,1200 and 1400℃for 3 h in carbon embedded condition and in air,respectively.Effects of carbon sources(flake graphite,carbon black N220,hard asphalt)on the properties of low carbon MgO-C bricks were researched.The results show that the strength of the specimens with asphalt is the highest,the oxidation resistance of the specimens with graphite is the best,but the strength is slightly worse than that with asphalt.The HMOR of the specimens with carbon black is the worst,the oxidation resistance is between the specimens with graphite and asphalt.

关 键 词：低碳镁碳砖 碳源 力学性能 抗氧化性 

分 类 号：TQ175[化学工程—硅酸盐工业]