某高铝高硅铝土矿提质试验研究  

Study on Upgrading of a High-Alumina and High-Silicon Bauxite Ore

作　　者：蓝柳佳 王丽[1,2] 孙伟[1,2] 刘润清[1,2] 曾华[1,2] Lan Liujia;Wang Li;Sun Wei;Liu Runqing;Zeng Hua(School of Minerals Processing and Bioengineering,Central South University,Changsha,Hu’nan 410083;Key Laboratory of Clean and Efficient Utilization of Calcium Mineral Resources in Hunan,Central South University,Changsha,Hu’nan 410083)

机构地区：[1]中南大学资源加工与生物工程学院,湖南长沙410083 [2]中南大学战略含钙矿物资源清洁高效利用湖南省重点实验室,湖南长沙410083

出　　处：《非金属矿》2022年第2期59-62,共4页Non-Metallic Mines

基　　金：国家自然科学基金(51974365,U1704252)。

摘　　要：贵州某铝土矿Al_(2)O_(3)品位为61.97%,SiO_(2)品位为13.06%,铝硅比为4.75,矿石特点为高铝、高硅、较低铝硅比,开发利用难度大。根据工艺矿物分析,采用“1粗1精1扫”的正浮选流程进行浮选,并选用新型辅助捕收剂BM-3与油酸钠组合使用。最终得到精矿Al_(2)O_(3)品位为72.28%,回收率为75.90%;SiO_(2)品位为4.97%,回收率为22.30%,铝硅比为14.54,较原矿铝硅比提高了9.79。The Al_(2)O_(3) grade of a bauxite mine in Guizhou is 61.97%,the SiO_(2) grade is 13.06%,and the aluminum-silicon ratio is 4.75.The ore is characterized by high aluminum,high silicon,and low aluminum-silicon ratio,which is difficult to develop and utilize.According to the process mineral analysis,the flotation process of"one-step roughing,one-step cleaning and one-step scavenging"was adopted.Meanwhile,the new auxiliary collector BM-3 was selected to be used in combination with sodium oleate.Finally,the concentrate with Al_(2)O_(3) grade of 72.28%,recovery of 75.90%,SiO_(2) grade of 4.97%,recovery of 22.30% was obtained,and aluminum-silicon ratio was 14.54.Compared with the original ore,aluminum-silicon ratio increased by 9.79.

关 键 词：铝土矿 铝硅比 浮选 捕收剂 

分 类 号：TD923[矿业工程—选矿]