摘要
低品位矿高炉冶炼十分普遍,针对冶炼过程中出现结瘤、崩料、炉衬侵蚀严重等问题,对低品位矿碱金属在高炉冶炼中的影响进行了研究。通过对低品位矿固体、渣铁和烟尘成分取样,采用原子吸收光谱法和火焰光度法分析化验并做热力学计算,得出了低品位矿碱金属在高炉冶炼过程中的投入产出分布、循环富集情况和对高炉冶炼的具体影响。结合冶炼实际,从入炉物料选择、渣量排放及碱度对碱金属循环富集影响方面提出了应选择灰分低、粒度好、杂质含量控制适当的物料以及根据结瘤周期对高炉的排渣周期和炉顶压力作出合适周期性调整的建议,对高炉长寿维护、低品位矿高炉冶炼的正常运行具有一定的意义。
It is a common practice to smelt the low-grade ores in the blast furnace. In view of the problems of scaffolding, slipping and lining erosion in smelting process, this paper studies how the alkali metals act in low-grade ore blast furnace smelting. By selecting samples from the ore solid, slag iron and soot, testing and analyzing them by atomic absorption spectroscopy and flame photometry, and finally carrying out a thermodynamic calculation, this paper shows that the input-output distribution and the cycle enrichment of the alkali metals mean a lot to smelting in blast furnace. Therefore, it proposes that furnace materials with low ash, fine particle size and proper impurity content should be selected and that the regular adjustment to slagging discharge and top pressure should be made according to scaffolding cycle, which is of great signifi-cance to blast furnace^ long life ＆ maintenance, and its normal functioning as well.
出处
《昆明冶金高等专科学校学报》
CAS
2017年第3期1-7,共7页
Journal of Kunming Metallurgy College
基金
云南省大学生创新创业训练计划项目:低品位复杂矿高炉钾
钠循环及富集形式研究(201610674015)
关键词
低品位矿
高炉冶炼
钾钠
low-grade ore
blast furnace smelting
potassium ＆ sodium
