摘要
依据白云鄂博矿中贫氧化矿主要矿物的选矿特性,在磨矿细度-74μm占90%,铁、稀土、铌单体解离度不太高的情况下,采用弱磁—强磁—浮选联合流程,首先将矿物进行合理分组,简化铁、稀土(铌)粗精矿中的矿物组成,提高铁,稀土、铌的单体解离度,并使恶化浮选作业的矿泥基本得到脱除,然后通过浮选,较经济地得到优质铁精矿、稀土精矿、稀土次精矿、富铌铁精矿等4种产品。另外,富铌铁精矿、浮铌尾矿、铁正浮尾矿中,钪有很大程度的富集,是良好的选冶提钪原料。磁浮联合流程大大提高了白云鄂博中贫氧化矿综合利用程度。
Since the liberation degree of iron, rare-earths and niobium is not very high at a grind of 90% minus74μ, rational grouping of the minerals should be achieved using the combined flowsheet of low magnetic separation-high intensity magnetic separation, so as to simplify minerals composition in primary concentrate, inhence the liberation degree of iron, rare-earths and niobium and remove roughly slimes harmful to flotation operation.Finally, high quality of iron concentrate, rare-earths concentrate, secondary rareearth concentrate and niobium-enriched iron concentrate can be obtained by flotation. The niobium-enriched iron concentrate, flotation tailing of niobium and positive flotation tailing of iron have a higher concentrateion ratio of scandium, therefore they are raw materials for recovering scandium. The combined flowsheet can greatly improve comprehensive utilization of Bayan Obo low and medium grade oxide ores.
出处
《矿冶工程》
CAS
CSCD
北大核心
1992年第1期45-49,68,共6页
Mining and Metallurgical Engineering
关键词
氧化矿
矿
铁
稀土
铌
钪
Oxide ore, Iron, Rare-earths, Niobium, Scandium, Combined flowsheet, Comprehensive utilization
