Synthesis of nanoparticle emulsion collector HNP and its application in microfine chalcopyrite flotation

2nd International Conference on New Material and Chemical Industry

材料科学;化学工业

He, G.C.^1 ; Ding, J.^1 ; Huang, C.H.^1 ; Kang, Q.^1

Faculty of Resource and Environmental Engineering, Jiangxi University of Science and Technology, Ganzhou

341000, China^1

关键词: Chemical absorption;    Flotation selectivity;    Micro-fine particles;    Polystyrene nanoparticles;    Scanning electrons;    Selective adsorption;    Uniform distribution;    Zeta potential analysis;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/292/1/012029/pdf
DOI  :  10.1088/1757-899X/292/1/012029

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

Hydrophobic polystyrene nanoparticles bearing thiazole groups named HNP were used as collectors to improve recovery of microfine chalcopyrite in flotation. HNP adsorbs onto microfine particles selectively, which were modified hydrophobically to induce flotation effectively. Particle size and scanning electron microscope analysis for HNP show that HNP is a spherical nano particles with small size, uniform distribution and good dispersion. Infrared spectrum analysis for HNP proved that functional monomer 2-mercapto styrene acrylic thiazole was bonded chemically onto styrene. Flotation test results indicate that HNP is the right collector of chalcopyrite. Especially, the recovery of chalcopyrite is higher than 95% in neutral and acid media. FTIR results reveal that the flotation selectivity of collector HNP is due to strong chemical absorption onto chalcopyrite surface. Zeta potential analysis shows that the zeta potential of chalcopyrite decreased more quickly after interaction with HNP with the increase of pulp pH value, confirming that collector HNP is an anionic collector. Scanning electron microscope conform that HNP has good selective adsorption on chalcopyrite.