Synthesis and characterization of a novel collector for the desulfurization of fine high-sulfur bauxite via reverse flotation  

作　　者：Gan Cheng Jianqiang Zhang Huanhuan Su Zhanyun Zhang 

机构地区：[1]Zhengzhou Non-ferrous Metals Research Institute Co.Ltd.,Aluminum Corporation of China,Zhengzhou,450041,China [2]College of Chemistry and Chemical Engineering,Henan Polytechnic University,Jiaozuo,454000,China [3]Collaborative Innovation Center of Coal Work Safety and Clean High Efficiency Utilization,Henan Polytechnic University,Jiaozuo,454000,China

出　　处：《Particuology》2023年第8期64-77,共14页颗粒学报（英文版）

基　　金：supported by the Foundation for University Key Teacher by Henan Province(grant No.2020GGJS051);Henan Polytechnic University Science Fund for Distinguished Young Scholars(grant No.J2021-1);Foundation for University Key Teacher by Henan Polytechnic University(grant No.2017XQG-12).

摘　　要：Bauxite is one of the main raw materials in the alumina industry.Fine high-sulfur bauxite flotation desulfurization is a great challenge presently.This study aims to synthesize nanoparticle collectors(NPCs)by emulsion polymerization to improve the abovesaid flotation desulfurization process.The physicochemical properties of high-sulfur bauxite were analyzed,and the experimental conditions for the synthesis of NPCs were optimized.The interaction mechanism between NPCs and pyrite was studied via fundamental analyses including SEM(Scanning Electron Microscope),FT-IR(Fourier Transform Infrared spectoscopy),Zeta-potential,XPS(X-ray Photoelectron Spectroscopy),and wettability.Under the closed-circuit flotation flowsheet of"one roughing-two cleaning-three scavenging",aluminum concen-trate with a yield of 85.91%and sulfur content of 0.56%were obtained using a common collector.However,with the addition of the novel NPC,aluminum concentrate with a yield of 85.70%and sulfur content of 0.36%could be obtained by a simpler flowsheet of"one roughing-one cleaning-two scav-enging".The improvement in flotation performance is suggested to be contributed by the addition of spherical NPC,which induced a rougher and more hydrophobic pyrite surface.

关 键 词：BAUXITE Flotation desulfurization Nanoparticle collector PYRITE 

分 类 号：TB31[一般工业技术—材料科学与工程]