摘要
对非洲东部某含铌矿石进行了工艺矿物学研究;基于工艺矿物学,将原矿磨细至-0.10mm粒级占100%,采用脱泥-除铁-浮锆工艺对原矿进行预处理,减少细泥、磁铁矿、锆石对铌矿物浮选指标的影响;在弱酸性条件下,以水玻璃+硫酸铝为组合抑制剂、硝酸铅为活化剂,结合自制螯合类捕收剂GYX_(2)进行铌浮选试验,获得了铌精矿Nb_(2)O_(5)品位26.87%、作业回收率88.31%、对原矿回收率80.86%的闭路试验指标,实现了矿石中铌矿物的高效回收。
A process mineralogy study was conducted for a niobium-bearing ore in eastern Africa. Based on the study results, the raw ore was ground to -0.10 mm (100% passing size), and then pretreated with a process consisting of desliming, iron removal and zircon flotation for reducing the influence of slime, magnetite, and zircon on flotation performance. Under weakly acidic conditions, a closed-circuit niobium flotation test was carried out, with water glass and aluminum sulfate as a combined depressant, lead nitrate as an activator, and a self-developed chelating collector GYX_(2), producing a niobium concentrate grading 26.87% Nb_(2)O_(5) at 88.31% recovery, with a corresponding recovery of 80.86% from the raw ore. It is concluded that the niobium minerals in the ore can be effectively recovered.
作者
刘超
胡红喜
张忠汉
黄伟
杨记平
陈志强
LIU Chao;HU Hongxi;ZHANG Zhonghan;HUANG Wei;YANG Jiping;CHEN Zhiqiang(Institute of Resources Utilization and Rare Earth Development,Guangdong Academy of Sciences,Guangzhou 510651,Guangdong,China;State Key Laboratory of Rare Metals Separation and Comprehensive Utilization,Guangzhou 510651,Guangdong,China;Guangdong Provincial Key Laboratory of Mineral Resource and Comprehensive Utilization,Guangzhou 510651,Guangdong,China;Shenghe Resources(Lianyungang)New Materials Technology Co.,Ltd.,Lianyungang,222042,Jiangsu,China)
出处
《矿冶工程》
北大核心
2025年第4期95-99,共5页
Mining and Metallurgical Engineering
基金
广东省科学院专项资金项目(2022GDASZH⁃2022010104,2023GDASZH⁃2023010104)
国家重点研发计划(2020YFC1908904)。
关键词
铌矿
烧绿石
铌铁矿
预处理
浮选
工艺矿物学
脱泥
niobium ore
pyrochlore
niobite
pretreatment
flotation
process mineralogy
desliming
