霞石正长岩预脱硅渣烧结-溶出试验研究  

Study on Sintering-Dissolution Test of Pre-desilication Slag from Nepheline Syenite

作　　者：刘巍 范艳青 蒋训雄 张登高 汪胜东 冯林永 蒋伟 LIU Wei;FAN Yanqing;JIANG XunxiongZHANG Denggao;WANG Shengdong;FENG Linyong;JIANG Wei(BGRIMM Technology Group,Beijing 100160,China)

机构地区：[1]矿冶科技集团有限公司,北京100160

出　　处：《中国资源综合利用》2022年第5期21-23,28,共4页China Resources Comprehensive Utilization

摘　　要：本文以霞石正长岩预脱硅渣为原料,采用烧结-溶出的方法进行铝、钾、钠的回收。在钙硅比n(CaO)/n(SiO_(2))=2,碱比n(Na_(2)O+K2O)/n(Al_(2)O_(3)+Fe_(2)O_(3))=1,烧结温度1300℃,时间0.5 h的综合条件下,可进行碱石灰烧结。烧结后的熟料磨至粒度60目左右,在液固比2∶1、温度80℃、时间40 min的条件下进行溶出,K_(2)O、Al_(2)O_(3)、Na_(2)O的溶出率可分别达到97.63%、86.94%、91.01%,为进一步实现铝、钾、钠的回收提供了便利。In this paper,nepheline syenite pre-desilication slag is used as raw material,and the recovery of aluminum,potassium and sodium is carried out by sintering-dissolution method.Soda lime sintering can be carried out under the comprehensive conditions of calcium-silicon ratio n(CaO)/n(SiO_(2))=2,alkali ratio n(Na_(2)O+K_(2)O)/n(Al_(2)O_(3)+Fe_(2)O_(3))=1,sintering temperature 1300℃,and time 0.5 h.The sintered clinker is ground to a particle size of about 60 mesh,and dissolved under the conditions of a liquid-solid ratio of 2∶1,a temperature of 80℃and a time of 40 min,the dissolution rates of K_(2)O,Al_(2)O_(3) and Na_(2)O can reach 97.63%,86.94% and 91.01%respectively,which provides convenience for further recovery of aluminum,potassium and sodium.

关 键 词：霞石正长岩 预脱硅渣 烧结 溶出 

分 类 号：TF803[冶金工程—有色金属冶金]