矿产保护与利用Issue(2)：63-68,6.DOI:10.13779/j.cnki.issn1001-0076.2018.02.012
选择性分散絮凝—磁选工艺回收云南上厂铁尾矿中的铁
Recovering Iron from Iron Tailings in Shangchang,Yunnan by Selective Dispersion and Flocculation-magnetic Separation Technology
摘要
Abstract
The iron tailings in Shangchang,Yunnan,with the very fine particle sizes, the low Fe content of only 16.56%,and the main Fe existing form of weak magnetic hematite,is belonging to a type of the micro-fine low-grade refractory iron tailings. Aiming at shortages of the existing re-concentration technologies,and the properties of the tailings,a new re-concentration technolo-gy of selective dispersion and flocculation-magnetic separation,was put forward. Then the effects of key factors on iron recovery were investigated,and the related reasons were also analyzed. The results show that under the optimum conditions: grinding fineness of -0.045 mm accounting for 95%, dosage of YL-1 of 800 g/t, frequency of stroke of 320 times/min, the concentrate with the Fe grade and recovery of 59.63% and 50.41%, was obtained. In the new technology, the fine grinding,which can improve the liberation degree of iron mineral,adding reagent YL-1 can well achieve the dispersion of slimes and the selective flocculation of fine iron mineral, and high frequency of stroke can reduce the mechanical inclusions of non-magnetic particles and the prob-ability of adhesion to the surface of the magnetic mineral due to surface force, all improve the in-dexes.关键词
铁尾矿/赤铁矿/分散/絮凝/磁选Key words
iron tailings/hematite/dispersion/flocculation/magnetic separation分类
矿业与冶金引用本文复制引用
李奕然,叶国华,朱冰龙,胡艺博,童雄,蒋京航..选择性分散絮凝—磁选工艺回收云南上厂铁尾矿中的铁[J].矿产保护与利用,2018,(2):63-68,6.基金项目
国家自然科学基金项目(51304090、51604130) （51304090、51604130）
云南省应用基础研究计划重点项目(2014FA027) （2014FA027）
