矿产综合利用2024，Vol.45Issue(6)：33-39,7.DOI:10.3969/j.issn.1000-6532.2024.06.006
含碱金属氧化物聚渣剂对镁系脱硫渣性能的影响
Influence of Alkali Metal Oxide Slag Aggregating Agent on the Performance of Magnesium Desulfurization Slags
摘要
Abstract
This is an article in the field of metallurgical engineering.In view of the thin slag layer in the desulfurization process of magnesium-based desulfurizers,it is difficult to remove cleanly,resulting in high-concentration desulfurization slag being brought into the converter,causing the problem of sulfur back in the converter.The liquidus diagram of CaO-SiO2-Al2O3-MgO(FeO)desulfurization slag was drawn by FactSage software,and the phase composition of desulfurization slag and the influence of desulfurization slag composition on the liquid phase area were analyzed,and the sensitivity of desulfurization slag to temperature was reduced,which is conducive to slag removal.A slag aggregation agent whose main component is SiO2 was designed to control the performance of desulfurization slag.The initial melting temperature,hemispherical point temperature and fluidity temperature of the desulfurization slag were measured by a melting point melt rate meter,and the effect of the addition amount of slag aggregation agent on the melting performance of the desulfurization slag was studied.The results show that when the ratio of desulfurization slag to slag aggregation agent is 5∶2～5∶5,the temperature difference between the initial melting temperature and the fluidity temperature of the desulfurization slag can be increased,and the thermal stability of the desulfurized slag can be improved.The ratio of acid desulfurization slag added to the slag aggregate agent should be low,and the desulfurization slag basicity can be increased appropriately to increase the slag aggregate agent ratio.关键词
冶金工程/FactSage/熔化性能/脱硫渣/聚渣剂Key words
Metallurgical engineering/FactSage/Melting point and melting rate/Desulfurization slag/Slag aggregating agent分类
矿业与冶金引用本文复制引用
蒋武锋,田亮,郝素菊,薄荷,马腾飞,张玉柱..含碱金属氧化物聚渣剂对镁系脱硫渣性能的影响[J].矿产综合利用,2024,45(6):33-39,7.基金项目
河北省自然科学基金(E2018209323、E2022209125) （E2018209323、E2022209125）
