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球团添加菱镁石熔剂对焙烧工艺制度的影响周明顺1,翟立委1,刘万山1,尚策2,任伟1(1.辽宁省鞍山市鞍钢股份有限公司技术中心2.鞍钢股份公司炼铁总厂,辽宁鞍山 114001)摘 要:为研究球团添加菱镁石熔剂对焙烧工艺制度的影响,在实验室条件下,将菱镁石熔剂添加到普通酸性球团中,利用傅立叶导热微分方程推导了球体不稳定导热微分方程,采用有限差分求解方法解析了菱镁石熔剂对球团传热过程的影响.分析结果表明:在相同焙烧条件下,普通酸性球团完成焙烧的时间为8.35 min,添加菱镁石熔剂的球团为9.13 min.建议在生产......
of stainless steelmaking dust pellet in liquid slag PENG Ji(彭 及)1, TANG Mo-tang(唐谟堂)1, PENG Bing(彭 兵)1, YU Di(余 笛)2, J. A. KOZINSKI3, TANG Chao-bo(唐朝波)1 (1. School of Metallurgical Science... mechanisms of the pellets immersed in liquid slag were investigated, and the effect of the pellet heating and the melting conditions were studied. The results show that the dust component in the pellet......
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添加熔剂对球团矿还原膨胀率的影响李艳茹1,李金莲1,张立国1,任伟1,袁慧1(1.辽宁省鞍山市鞍钢股份有限公司技术中心)摘 要:在鞍钢现场的原料条件下,向铁精矿中添加含CaO,MgO等熔剂并研究其对原膨胀率的影响.结果表明:CaO恶化球团的还原膨胀性能,MgO能够很好地降低球团的膨胀率,并随着熔剂配比的增加而降低.当熔剂配比为1%时,镁石球团还原膨胀率指标最低,为11.83%,且比基准球团低1.2%;石灰石球团还原膨胀率指标最高,为14.93%且比基准球团高出1.93%.关键词:球团矿; 还原膨胀......
低含碳球团配加MgO试验研究李金莲1,刘万山1,任伟1,李艳茹1(1.辽宁省鞍山市鞍钢股份有限公司技术中心)摘 要:为得到优质高强度的高炉金属化球团,研究了不同MgO/SiO2比值和焙烧温度对煤粉添加量为5%的含碳球团性能的影响.结果表明:当含碳球团中的煤粉配比为5%,膨润土配比1.5%,MgO/SiO2一定时,随着焙烧温度(1 200~1 350℃)的升高,成品球团抗压强度呈先增加后降低的趋势,且在1 300℃时强度最大(2 138 N/球).焙烧温度过低,球团抗压强度较低,但焙烧温度过高,球团内部过熔化,产......
Analytical solution for coupled diffusion of three-components liquid in porous pellet XU Zeng-he(徐曾和)1, WANG Jin-xia(王锦霞)2 (1. School of Resource and Civil Engineering, Northeastern University,Shenyang 110004, China; 2. School of Materials and Metallurgy, Northeastern University, Shenyang 110004, China) Abstract: The coupled three-components liquid diffusion within a porous pellet......
) Abstract: Fibrosis bentonite slurry was prepared by mixing organic dispersant and bentonite during the action of a blender, and the effect of fibrosis bentonite formation on iron ore pelletization and its mechanism were both studied. The results show that this fibrosis bentonite slurry was observed to form a fibrous structure. Bentonite dosage is 1.0% of mass concentration of iron ore, strengthening......
Trans. Nonferrous Met. Soc. China 23(2013) 855-860 Regeneration of activated carbon adsorbed EDTA by electrochemical method Xiang-yu YOU1,2,3, Li-yuan CHAI1,2, Yun-yan WANG1,2, Yan-rong SU4, Na ZHAO1,5, Yu-de SHU1 1. School of Metallurgical Science and Engineering, Central South University, Changsha......
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高效镁质添加剂用于铁矿球团的试验研究李艳茹1,李金莲1,任伟1(1.辽宁省鞍山市鞍钢股份有限公司技术中心)摘 要:高效镁质添加剂是一种由高活性氧化镁粉和植物蛋白胶体构成的球团复合粘结剂.针对该高效镁质添加剂完全取代膨润土进行了造球,预热,焙烧,抗压强度及成品球团的冶金性能试验研究.结果表明:配加高效镁质添加剂可降低球团还原膨胀率1.54%~4.34%,初始软熔温度提高25℃,滴落温度提高250℃以上,其使用比例为3%.关键词:球团; 高效镁质添加剂; 冶金性能......