云南金厂河铁矿石高效节能选矿工艺试验
Experiment on High-efficiency and Energy-saving Beneficiation Process of Jinchanghe Iron Ore in Yunnan
谢恩龙 1王忠应 2姜亚雄 3陈艳平 2高起方 1周东云1
作者信息
- 1. 云南黄金矿业集团股份有限公司
- 2. 金厂河矿业有限公司
- 3. 云南黄金矿业集团股份有限公司;昆明理工大学国土资源工程学院
- 折叠
摘要
云南金厂河铁矿为合理开发利用全铁品位30.47%的铁矿石,确定有效的选矿工艺流程,针对矿石中有用铁矿物嵌布粒度较细,且与脉石矿物紧密共生,导致矿石难以高效抛废的问题,在碎选工艺引入了高压辊磨超细碎选择性碎解技术,并与常规破碎(-10 mm)湿式磁选预选抛尾工艺进行了对比试验.试验结果表明:在磁性铁回收率相近的情况下,采用高压辊磨—湿式预选工艺抛出的尾矿量明显提高,高压辊磨湿式预选精矿分别采用两段阶段磨矿—单一磁选工艺和两段阶段磨矿—磁选—磁选柱分选工艺,最终获得的分选指标相近,基于降本增效及节能减排的目标,推荐高压辊磨—湿式磁选—两段阶段磨矿—磁选—磁选柱分选工艺,作为该铁矿石的原则选矿工艺流程.
Abstract
In order to rationally develop and utilize the iron ore with total iron grade of 30.47％ in Jin-changhe Iron Mine,Yunnan Province,and determine an effective beneficiation process,aiming at the prob-lem that the useful iron minerals in the ore are finely disseminated and closely associated with gangue miner-als,which makes it difficult to efficiently discard the ore,a high-pressure roller mill ultra-fine crushing and selective crushing technology was introduced in the crushing process,and a comparative test was car-ried out with the conventional crushing(-10 mm)wet magnetic separation pre-concentration and tailings dis-carding process.The test results show that under the condition of similar magnetic iron recovery rate,the amount of tailings thrown by the high pressure roller mill-wet pre-concentration process is obviously im-proved.The high pressure roller mill-wet pre-concentration concentrate adopts two stage grinding-single magnetic separation process and two stage grinding-magnetic separation-magnetic separation column pro-cess respectively,and the final separation indexes are similar.Based on the goal of reducing cost,increas-ing efficiency and energy saving and emission reduction,the high pressure roller mill-wet magnetic separa-tion-two stage grinding-magnetic separation-magnetic separation column separation process is recommend-ed as the principle beneficiation process of the iron ore.
关键词
铁矿石/高压辊磨机/湿式预选/磁选柱Key words
iron ore/high pressure roller mill/wet pre-concentration/magnetic separation column引用本文复制引用
出版年
2024
NETL
NSTL
万方数据