Influence of gangue existing states in iron ores on the formation and flow of liquid phase during si

来源 :International Journal of Minerals Metallurgy and Materials | 被引量 : 0次 | 上传用户:chen2591272
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
Gangue existing states largely affect the high-temperature characteristics of iron ores. Using a micro-sintering method and scanning electron microscopy, the effects of gangue content, gangue type, and gangue size on the assimilation characteristics and fluidity of liquid phase of five different iron ores were analyzed in this study. Next, the mechanism based on the reaction between gangues and sintering materials was unraveled. The results show that, as the SiO2 levels increase in the iron ores, the lowest assimilation temperature(LAT) decreases, whereas the index of fluidity of liquid phase(IFL) increases. Below 1.5wt%, Al2O3 benefits the assimilation reaction, but higher concentrations proved detrimental. Larger quartz particles increase the SiO2 levels at the local reaction interface between the iron ore and CaO, thereby reducing the LAT. Quartz-gibbsite is more conductive to assimilation than kaolin. Quartz-gibbsite and kaolin gangues encourage the formation of liquid-phase low-Al2O3–SFCA with high IFL and high-Al2O3–SFCA with low IFL, respectively. Gangue existing states largely affect the high-temperature characteristics of iron ores. Using a micro-sintering method and scanning electron microscopy, the effects of gangue content, gangue type, and gangue size on the assimilation characteristics and fluidity of liquid phase of five different iron ores were analyzed in this study. Next, the mechanism based on the reaction between gangues and sintering materials was unraveled. The results show that, as the SiO2 levels increase in the iron ores, the lowest assimilation temperature (LAT) decreases, whereas the index Below 1.5 wt%, Al2O3 benefits the assimilation reaction, but higher concentrations proved detrimental. Larger quartz particles increase the SiO2 levels at the local reaction interface between the iron ore and CaO, reducing the LAT . Quartz-gibbsite is more conductive to assimilation than kaolin. Quartz-gibbsite and kaolin gangues encourage the formation of liquid-phase low-Al 2O3-SFCA with high IFL and high-Al2O3-SFCA with low IFL, respectively.
其他文献
互联网给人们的生活和工作带来便利的同时也给人们的正常生活带来了安全隐患.随着人们对互联网的需求和依赖性逐渐加强,其所带来的安全隐患也逐渐增大.目前,保证网络信息安全
目的 评价电压门控钠离子通道β3亚基(Scn3b)在小鼠神经病理性痛中的作用.方法 采用转基因手段,将目的基因Scn3b嵌入pBROAD-mcs载体中,成为pBROAD-rosa-Scn3b质粒,孕育原代小鼠.将原代小鼠和C57/B6小鼠进行配种,得到转基因小鼠.通过DNA、RT-PCR和Western blot实验鉴定过表达成功后,进行后续实验.随机选择Scn3b过表达转基因小鼠(Scn3b组)
随着信息化的发展,公司IT系统不断发展,网络规模迅速扩大、设备数量激增,建设重点逐步从网络平台建设,转向以深化应用、提升效益为特征的运行维护阶段,IT系统运维与安全管理
期刊
该文从挂篮荷载计算、施工流程、支座及临时固结施工、挂篮安装及试验、合拢段施工、模板制作安装、钢筋安装、混凝土的浇筑及养生、测量监控等方面人手,介绍了S226海滨大桥
A free-standing diamond film with millimeter thickness prepared by DC arc plasma jet was thinned successively by mechanical grinding. The orientation and qualit
目的 探讨脊髓背角小胶质细胞组织蛋白酶S(CatS)在大鼠骨癌痛维持中的作用.方法 雌性未交配SD大鼠50只,4~6周龄,体重150~ 180 g,采用随机数字表法,将其分为5组(n=10):假手术组(S组)、骨癌痛组(BCP组)、假手术+CatS抑制剂吗啉亮氨酸高苯丙氨酸乙烯基苯基砜(LHVS)组(S+L组)、骨癌痛+二甲基亚砜组(BCP+D组)和骨癌痛+LHVS组(BCP+L组).左侧胫骨骨髓
我国致力于建设创新型国家,致力于发展高新科技,云计算是近几年兴起的热门高科技,如今它已被视为IT产业必不可少的技术,也蔓延渗透到其它行业,尤其是电力企业.本文从云计算的
期刊