氟化钙对脱硫渣提铁和制备透辉石微晶玻璃的影响研究  

Study on the Effect of Calcium Fluoride on Iron Extraction from Desulfurization Slag and Preparation of Diopside Microcrystalline Glass

作　　者：唐桂香 童志博 谢秋燕 冉琦琪 TANG Guixiang;TONG Zhibo;XIE Qiuyan;RAN Qiqi(Yangtze Normal University,Chongqing 408000,China)

机构地区：[1]长江师范学院,重庆408000

出　　处：《中国资源综合利用》2024年第10期28-31,共4页China Resources Comprehensive Utilization

基　　金：重庆市教委科学技术研究项目(KJZD-K202301404);大学生创新创业训练计划项目(202310647001)。

摘　　要：作为一种铁水预处理方法,KR搅拌法可以通过机械搅拌实现脱硫。试验以KR脱硫渣为材料,采用NH4Cl对其进行浸出,得到铵浸脱硫渣,并通过碳热还原反应提取金属铁和制备微晶玻璃,以研究氟化钙对提铁和微晶玻璃制备的影响。结果表明,随着CaF_(2)添加量的增加,碳热还原所得铁块由整块向不完整的多块转变,还原渣由非晶相向透辉石、透辉石与钙长石的混合晶相转变,而微晶玻璃由透辉石主晶相逐步转向钙长石。结合主晶相和析晶生长指数,当CaF_(2)添加量为1%时,微晶玻璃性能最佳,此时析晶生长指数为2.75,接近体积析晶。As a pretreatment method for molten iron,KR stirring can achieve desulfurization through mechanical stirring.In the experiment,taking KR desulfurization slag as raw material,NH4Cl is used for leaching to obtain ammonium leaching desulfurization slag,and the metal iron is extracted and microcrystalline glass is prepared through carbon thermal reduction reaction,and the effect of calcium fluoride on iron extraction and microcrystalline glass preparation is studied.The results indicate that as the amount of CaF_(2) introduced increases,the iron blocks obtained by carbon thermal reduction transform from whole blocks to incomplete multiple blocks,and the reduced slag undergoes a transition from amorphous phase to diopside,a mixed crystal phase of diopside and plagioclase,while the microcrystalline glass gradually shifts from the main crystal phase of diopside to plagioclase.Combining the main crystal phase and crystallization growth index,when the CaF_(2) addition amount is 1%,the performance of the microcrystalline glass is optimal,and the crystallization growth index is 2.75,which is close to volume crystallization.

关 键 词：脱硫渣 提铁 铵浸 氟化钙 透辉石 微晶玻璃 

分 类 号：TQ171.1[化学工程—玻璃工业]