共搜索到451条信息,每页显示10条信息,共46页。用时:0小时0分0秒843毫秒
......
电弧炉粉尘球团直接还原的热传导模型 张传富1,彭及1,彭兵1 (1.中南工业大学,长沙 410083) 摘要:对电弧炉炼钢粉尘加上还原剂碳混合制粒成的球团还原过程的热传导行为进行了研究,根据实验推导了球团导热模型的结构参数,并试图建立热传导模型. 关键词:导热系数; 热传导模型; 电弧炉粉尘球团; 氧化物还原; 孔隙率; Effective Thermal Conductivity; Heat Transfer Model; Pellet of EAF Dust; Reduction ofOxide; Porosity; [全文内容正在添加中] ......
reduction by N2-CO mixed with 8% hydrogen gas at 1373 K was examined by BES and the results are shown in Fig. 5. It can be seen from Fig. 5(a) that the raw ore of PTC pellet is mainly homogeneous particals... for this effect, one is that H2 accelerates the chemical reaction, and the other is that the addition of H2 gas can improve the porosity of pellet intensively. It is noteworthy that this effect......
......
of oxidized pellet prepared from pyrite cinder by moisture grinding BAI Guo-hua1, ZHOU Xiao-qing2, FAN Xiao-hui1, LI Jian-chen1 (1. School of Resources Processing and Bioengineering, Central South..., the characteristic of oxidized pellet prepared from pyrite cinder and the mechanism of moisture grinding on pellet preparation were studied. The results show that the strength of green balls is very low......
the pellet swelling rate. Key words: low silica magnesium pellet; calcination temperature; reduction swelling rate; apparent activation energy 还原膨胀率是球团矿的重要冶金性能指标之一.一般球团矿在还原过程中都会出现体积膨胀,强度相应降低的情况.球团矿体积膨胀...1200,1230,1260,1280和1300 ℃的温度下焙烧了1.5%镁球和3.0%镁球,图1所示为焙烧过程球团矿抗压强度随焙烧温度的变化曲线.从图1可知,当焙烧温度低于1230 ℃时,1.5%镁球和3.0%镁球的抗压强度都比较低,在1700 N/pellet以下.随着焙烧温度的提高,两种球团的抗压强度都提高.当焙烧温度提高到1280 ℃时,抗压强度分别达到了 2848 N/pellet和2613......
(2012)08-2896-04 Three-dimensional temperature field simulation model of rotary kiln for iron ore oxidized pellet FAN Xiao-hui, LI Jun, CHEN Xu-ling, WANG Yi, GAN Min (School of Minerals Processing...-ratio of flue gas temperature is more than 90%. Key words: iron ore oxidized pellet; rotary kiln; three-dimensional model; temperature distribution 我国的钢铁工业发展迅速,2011年我国钢产量已达到6.83×108 t.目前,高碱度烧结矿配加酸性球团矿和(或......
土制备及其在铁精矿球团中的应用[J]. 中南大学学报(自然科学版), 2014, 45(2): 341-342. HUANG Zhucheng, LI Tiehui, YI Lingyun, et al. Preparation of fibrosis bentonite and its application in iron ore concentrate pellet[J]. Journal... property of bentonite used in iron pellet ZHONG Qiang, YANG Yongbin, MENG Feiyu, LI Qian, JIANG Tao (School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, China......
地勘单位改革与省级公益性地质队伍建设要统筹推进--以西南西北地区为例姚震1,2,张翠光2,罗晓玲21. 中国地质大学(北京)2. 中国地质调查局发展研究中心摘 要:阐述了统筹地勘单位改革与省级公益性地质调查队伍建设的必要性;分析了统筹改革要解决的几个难题:公益性地质调查队伍规模偏小,公益性地质调查队伍管理关系不顺,地勘单位与下属的公益性地质调查队伍发展方向上的矛盾;对推进统筹改革进行了相关理论思考:公益性地质调查队伍规模问题,商业性地质工作及队伍来源问题,政府管理与服务科学化的要求问题;从西南西北地区实际出......
......