Novel catalysis catalysis mechanisms of benzohydroxamic acid adsorption by lead ions and changes in the-surface of scheelite particles

被引：53

作者：

Han, Haisheng ^{[1
]}

Hu, Yuehua ^{[1
]}

Sun, Wei ^{[1
]}

Li, Xiaodong ^{[3
]}

Chen, Kefeng ^{[3
]}

Zhu, Yangge ^{[4
]}

Nguyen, Anh V. ^{[1
,2
]}

Tian, Mengjie ^{[1
]}

Wang, Li ^{[1
]}

Yue, Tong ^{[1
]}

Liu, Runqing ^{[1
]}

Gao, Zhiyong ^{[1
]}

Chen, Pan ^{[1
]}

Zhang, Chenyang ^{[1
]}

Wang, Jianjun ^{[1
]}

Wei, Zhao ^{[1
]}

Wang, Ruolin ^{[1
]}

机构：

[1] Cent S Univ, Sch Mineral Proc & Bioengn, Changsha 410083, Peoples R China

[2] Univ Queensland, Sch Chem Engn, Brisbane, Qld 4072, Australia

[3] Hu Nan Shizhuyuan Nonferrous Met Ltd Liabil Corp, Chenzhou 423037, Peoples R China

[4] Beijing Gen Res Inst Min & Met, State Key Lab Mineral Proc, Beijing 102600, Peoples R China

来源：

MINERALS ENGINEERING | 2018年 / 119卷

关键词：

Benzohydroxamic acid; Scheelite; Adsorption; Catalysis; XPS; Surface potential; Hydrophobicity; Flotation; SELECTIVE FLOTATION; SODIUM OLEATE; CALCIUM MINERALS; COLLECTOR; TUNGSTEN; SOLUBILITY; PHOSPHATES; SEPARATION; MODIFIERS; BEHAVIOR;

D O I：

10.1016/j.mineng.2018.01.005

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

To improve the floatability of tungsten minerals, lead ions (lead nitrate) were used to modify the surface properties of the minerals and benzohydroxamic acid (BHA) was used as a collector in the flotation system. Pb2+-BHA complexes are inevitably present in this process and the role of it is unclear. This investigation is going to describe a new approach and the mechanism of catalyzing BHA adsorption onto scheelite by lead ions. Chemical speciation, zeta potential, FTIR, and XPS studies were conducted to establish the important role of lead ions. Indeed, Pb2+-BHA complexes were shown to be the active species responsible for flotation. The speciation and zeta potential results showed the presence of the adsorbed Pb2+-BHA complexes on the scheelite. The XPS results for atomic composition and binding energies confirmed Pb2+-BHA species adsorbed on the scheelite surface, which contributed to more adsorption of BHA. The new method would increase the recovery of scheelite, simplify the flowsheet and reduce the processing cost.

引用

页码：11 / 22

页数：12

共 42 条

[1] ELECTROKINETIC PROPERTIES OF SCHEELITE [J].

ARNOLD, R ;

WARREN, LJ .

JOURNAL OF COLLOID AND INTERFACE SCIENCE, 1974, 47 (01) :134-144

[2] SURFACE-CHEMISTRY AND FLOTATION OF SCHEELITE .1. SOLUBILITY AND SURFACE CHARACTERISTICS OF PRECIPITATED CALCIUM TUNGSTATE [J].

ATADEMIR, MR ;

KITCHENER, JA ;

SHERGOLD, HL .

JOURNAL OF COLLOID AND INTERFACE SCIENCE, 1979, 71 (03) :466-476

[3] SELECTIVE FLOTATION OF SCHEELITE FROM CALCIUM MINERALS WITH SODIUM OLEATE AS A COLLECTOR AND PHOSPHATES AS MODIFIERS .2. THE MECHANISM OF THE INTERACTION BETWEEN PHOSPHATE MODIFIERS AND MINERALS [J].

CHANGGEN, L ;

YONGXIN, L .

INTERNATIONAL JOURNAL OF MINERAL PROCESSING, 1983, 10 (03) :219-235

[4] Investigation on the selectivity of N-((hydroxyamino)-alkyl) alkylamide surfactants for scheelite/calcite flotation separation [J].

Deng, Lanqing ;

Zhao, Gang ;

Zhong, Hong ;

Wang, Shuai ;

Liu, Guangyi .

JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY, 2016, 33 :131-141

[5] A novel surfactant N-(6-(hydroxyamino)-6-oxohexyl)octanamide: Synthesis and flotation mechanisms to wolframite [J].

Deng, Lanqing ;

Zhong, Hong ;

Wang, Shuai ;

Liu, Guangyi .

SEPARATION AND PURIFICATION TECHNOLOGY, 2015, 145 :8-16

[6] Solubility, sorption, and soil respiration effects of tungsten and tungsten alloys [J].

Dermatas, D ;

Braida, W ;

Christodoulatos, C ;

Strigul, N ;

Panikov, N ;

Los, M ;

Larson, S .

ENVIRONMENTAL FORENSICS, 2004, 5 (01) :5-13

[7] The flotation separation of scheelite from calcite using acidified sodium silicate as depressant [J].

Feng Bo ;

Luo Xianping ;

Wang Jinqing ;

Wang Pengcheng .

MINERALS ENGINEERING, 2015, 80 :45-49

[8]

Fuerstenau AC., 1966, T SME AIME, V235, P359

[9]

Fuerstenau M. C., 1985, METALLURGICAL, P105

[10]

Fuerstenau M. C., 2001, PROCESS FUNDAM, P33

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