期刊
MINERALS ENGINEERING
卷 164, 期 -, 页码 -出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.mineng.2021.106817
关键词
Iron oxide; Quartz; Asynchronous flocculation; Cationic collector; Flotation
资金
- National Natural Science Foundation of China [51904001]
- Anhui Provincial Natural Science Foundation [2008085QE223]
- China Postdoctoral Science Foundation [2020M673590XB]
- Key Research and Development Projects of Anhui Province [201904a07020044, 201904a07020054]
- China Scholarship Council
- Natural Sciences and Engineering Research Council (NSERC) of Canada
In the reverse cationic flotation of ultra-fine hematite-quartz mixtures, the addition of 50 g/t PEO significantly improved the grade and recovery of iron concentrate. Quartz flocculation by PEO greatly assisted its flotation by the cationic collector.
Starch was used as a selective depressant/flocculant for ultra-fine hematite, and polyethylene oxide (PEO) was used as a flocculant for ultra-fine quartz in the reverse cationic flotation of ultra-fine hematite-quartz mixtures. Batch flotation, sedimentation, focused beam reflectance measurement (FBRM) and scanning electron micro-scopic (SEM) measurements were performed to investigate the flotation separation performance and the mechanisms of the asynchronous flocculation flotation process. The results indicated that with the addition of 50 g/t PEO, the grade and recovery of the iron concentrate were increased by 2.3 and 2.9 percentage points, respectively. Quartz flocculation by PEO significantly assisted its flotation by the cationic collector.
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