A novel macromolecular depressant for reverse flotation: Synthesis and depressing mechanism in the separation of hematite and quartz
作者： Xingrong Zhang , Yangge Zhu , Yu Xie , Yanbo Shang , Guibing Zheng
DOI: 10.1016/J.SEPPUR.2017.05.051
关键词:
摘要: Abstract In this paper, a novel macromolecular depressant of hematite, polymaleic anhydride-triethylenetetramine (PMTA) with multiple carboxyl and amine groups, has been synthesized used for cationic reverse flotation separation quartz from hematite. The structure is characterized by Fourier transform infrared spectroscopy (FT-IR). depression performance adsorption mechanism PMTA onto hematite surface are investigated micro-flotation tests, FT-IR, zeta potential X-ray photoelectron spectra (XPS). results indicate that exhibits good compared to starch. We find 98.29% depressed grade 65.24% at pH 11 12 mg/L dosage. FT-IR spectra, XPS analysis demonstrate may mainly chemisorb on the Fe O bonds, adsorb hydrogen bond interaction. could be in quartz.
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