摘要
对广西平果地区某高硫沉积型铝土矿进行矿石矿物组成、结构构造、矿石嵌布关系等工艺矿物学特征研究,并根据矿石性质制定了浮选、还原焙烧+磁选、煅烧3种方案进行铝土矿脱硫实验。结果表明,广西平果沉积型铝土矿Al_(2)O_(3)品位65.04%、S品位5.08%,主要组分为一水硬铝石和黄铁矿;3种方案均可很好脱除矿石中的黄铁矿,其中浮选可获得S品位0.49%、Al_(2)O_(3)品位75.90%的铝土矿精矿,满足下一工序氧化铝用料要求。推荐浮选方案为高硫沉积型铝土矿的预脱硫处理方法。
Based on the mineralogy of the high-sulfur sedimentary bauxite ore from Pingguo area of Guangxi,including mineral composition,structural property and mineral dissemination characteristics,three kinds of technical schemes were proposed according to the ore properties,including flotation,reduction roasting plus magnetic separation,and calcination,and then adopted respectively in experiments of desulfurization.The mineralogical study shows that this bauxite ore contains 65.04% Al_2O_(3) with S grade of 5.08%,and the dominant minerals therein are diaspore and pyrite.It is found that the pyrite can be effectively removed by those three processing techniques,and the flotation process can yield an bauxite concentrate with Al_2O_(3) grade of 75.90% and the S grade reduced to 0.49%,which is qualified as the feed material for the succeeding alumina extraction.In this case,it is recommended that the flotation be selected as a pre-desulfurization solution for high-sulfur sedimentary bauxite ore.
作者
雷满奇
陈燕清
刘杰
李德强
LEI Manqi;CHEN Yanqing;LIU Jie;LI Deqiang(Geology and Mineral Testing and Research Center of Guangxi Zhuang Autonomous Region,Nanning 530023,Guangxi,China)
出处
《矿冶工程》
CAS
北大核心
2024年第6期60-65,共6页
Mining and Metallurgical Engineering
基金
地质勘查广西财政专项资金(桂地矿综研[2021]9号,桂地矿发[2022]20号)。
关键词
铝土矿
沉积型铝土矿
铝土矿精矿
硫精矿
黄铁矿
一水硬铝石
脱硫
选矿
bauxite ore
sedimentary bauxite ore
bauxite concentrate
sulfur concentrate
pyrite
diaspore
desulphurization
beneficiation
