低品位复杂钼矿拌酸熟化堆浸工艺研究
Research on Low grade Complex Molybdenum Ore Acid Curing and Heap Leaching Process
霍玉宝 1刘辉 2刘永涛 1隋杰 1师留印 2高东星 1程瑞泉 1刘硕1
作者信息
- 1. 中核沽源铀业有限责任公司,河北张家口 076561
- 2. 核工业北京化工冶金研究院,北京 101149
- 折叠
摘要
针对沽源460低品位复杂钼矿中钼矿物以微细脉状形式被褐铁矿所包裹,矿石细碎后泥化现象严重的问题,研究了以拌入高酸加温熟化破解铀、钼矿物的包裹体,并对处于硫化态的钼矿物进行氧化,进而实现难处理铀钼矿的高效浸出,再通过加入耐酸耐高温的天然粘合剂凹凸棒,解决了熟化后的矿石物料在筑堆浸出过程中遇水易泥化而导致渗透性差的问题.确定的最佳熟化条件为:矿石粒度-2.5 mm,熟化酸用量10％,黏合剂凹凸棒拌入量8％,熟化温度90 ℃,熟化时间24 h,铀渣计浸出率63.4％,钼渣计浸出率75.0％.
Abstract
In response to the problem that molybdenum minerals in the low-grade complex molybdenum ore of Guyuan 460 are wrapped in fine vein like form by limonite,resulting in serious mud formation after ore crushing,a study was conducted on the dissolution of uranium and molybdenum mineral inclusions by mixing high acid and heating,and the oxidation of molybdenum minerals in a sulfurized state to achieve efficient leaching of difficult to treat uranium molybdenum ore.Furthermore,by adding acid resistant and high-temperature resistant natural adhesive concave convex rods,the problem of poor permeability of the matured ore material due to easy mud formation when encountering water during heap leaching was solved.The optimal maturation conditions determined are:ore particle size-2.5 mm,10％maturation acid dosage,8％binder concave convex rod mixing amount,maturation temperature of 90 ℃,maturation time of 24 h,uranium slag leaching rate of 63.4％,molybdenum slag leaching rate of 75.0％.
关键词
硫化钼矿/拌酸熟化/堆浸/泥化/黏合剂/渗透性Key words
molybdenum sulfide ore/acid mixing and maturation/heap leaching/argillization/adhesive/permeability引用本文复制引用
基金项目
中核集团集中研发项目(中核科发[2021]292号)
出版年
2024
NETL
NSTL
万方数据