Fundamental aspects of bubble-particle attachment mechanism in flotation separation

被引：58

作者：

Albijanic, B. ^{[1
,2
,3
]}

Ozdemir, O. ^{[3
,4
]}

Hampton, M. A. ^{[3
,5
]}

Nguyen, P. T. ^{[3
]}

Nguyen, A. V. ^{[3
]}

Bradshaw, D. ^{[2
]}

机构：

[1] Curtin Univ, Dept Met & Minerals Engn, Western Australian Sch Mines, Kalgoorlie, WA 6430, Australia

[2] Univ Queensland, Julius Kruttschnitt Mineral Res Ctr, Brisbane, Qld 4068, Australia

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

[4] Istanbul Univ, Dept Min Engn, TR-34320 Istanbul, Turkey

[5] Murdoch Univ, Sch Vet & Life Sci, Murdoch, WA 6150, Australia

来源：

MINERALS ENGINEERING | 2014年 / 65卷

关键词：

Flotation; Attachment time; AFM; Contact angle; Adsorption; INDUCTION-TIME MEASUREMENTS; CONTACT ANGLES; RATE-EQUATION; ADSORPTION; FORCE; FILMS; MINERALOGY; STABILITY; COLLECTOR; SURFACES;

D O I：

10.1016/j.mineng.2014.06.008

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

Analysis of bubble-particle mechanism is important for improving our understanding of flotation process. The research presented integrates microflotation experiments, bubble-particle attachment time measurements, and colloid and surface characterization and analysis. The bubble-particle attachment time was inversely related to the flotation recovery and the minimum attachment time matched the maximum flotation recovery, which occurred around mutual isoelectric point for the glass particles and air bubbles. Bubble-particle force measurements, performed with an Atomic Force Microscope (AFM), showed a similar trend. Additionally, the adsorption isotherm of the glass-dodecyl amine hydrochloride (DAH) system indicated that there are the three adsorption regions, and the flotation recovery reached its maximum value in the second region of DAH adsorption on the glass surface. All results obtained in this study showed the important role of colloidal forces affected by surfactant adsorption in bubble-particle attachment. Crown Copyright (C) 2014 Published by Elsevier Ltd. All rights reserved.

引用

页码：187 / 195

页数：9

共 41 条

[1]

Albijanic B., 2010, 25 INT MIN PROC C, P1703

[2] The relationships between the bubble-particle attachment time, collector dosage and the mineralogy of a copper sulfide ore [J].

Albijanic, Boris ;

Bradshaw, Dee J. ;

Nguyen, Anh V. .

MINERALS ENGINEERING, 2012, 36-38 :309-313

[3] A relationship between the bubble-particle attachment time and the mineralogy of a copper-sulphide ore [J].

Albijanic, Boris ;

Amini, Eiman ;

Wightman, Elaine ;

Ozdemir, Orhan ;

Nguyen, Anh V. ;

Bradshaw, Dee J. .

MINERALS ENGINEERING, 2011, 24 (12) :1335-1339

[4]

[Anonymous], 1988, Zeta Potential in Colloid Science: Principles and Applications

[5]

[Anonymous], 1988, P 16 INT MIN PROC C

[6] STABILITY OF AQUEOUS FILMS ON HYDROPHOBIC METHYLATED SILICA [J].

BLAKE, TD ;

KITCHENE.JA .

JOURNAL OF THE CHEMICAL SOCIETY-FARADAY TRANSACTIONS I, 1972, 68 (08) :1435-&

[7] Measurement of the sub-process of bubble loading in flotation [J].

Bradshaw, DJ ;

OConnor, CT .

MINERALS ENGINEERING, 1996, 9 (04) :443-448

[8] A TECHNIQUE FOR MEASURING THE FORCE BETWEEN A COLLOIDAL PARTICLE IN WATER AND A BUBBLE [J].

BUTT, HJ .

JOURNAL OF COLLOID AND INTERFACE SCIENCE, 1994, 166 (01) :109-117

[9]

Derjaguin B, 1939, ACTA PHYSICOCHIM URS, V10, P25

[10] The effect of drop (bubble) size on advancing and receding contact angles for heterogeneous and rough solid surfaces as observed with sessile-drop and captive-bubble techniques [J].

Drelich, J ;

Miller, JD ;

Good, RJ .

JOURNAL OF COLLOID AND INTERFACE SCIENCE, 1996, 179 (01) :37-50

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