Preliminary Program

APPLICATION OF SURFACE SCIENCE
TO
ADVANCING FLOTATION TECHNOLOGY

11-16 August 1996
Naantali Spa Hotel
Matkailijantie 2
21100 Naantali, Finland
Phone: 358-21-445-50
Fax: 358-21-445-5622

Conference Chair:
Prof. Eero J. Suoninen
Department of Applied Physics/ Materials Science
University of Turku

Conference Co-Chairs:
A.N. Buckley
Division of Coal and Energy Technology
CSIRO

K.S.E. Forssberg
Division of Mineral Processing
Lulea University of Technology

Brij Moudgil
Materials Sciences & Engineering Department
University of Florida

Douglas Fuerstenau
Materials Sciences & Engineering Department
University of California at Berkeley

Engineering Foundation Conferences
345 E. 47th Street New York, NY 10017
1-212-705-7836; Fax: 1-212-705-7441; E-mail: engfnd@aol.com
World Wide Web: http://www.engfnd.org/engfnd/

Sunday, 11 August

15:00 - 17:30 Registration

17:30 - 19:00 Dinner

20:00 - 22:00 Reception

Monday, 12 August

07:00 - 08:20 Breakfast

08:30 - 08:50 Welcomes
Eero Suoninen, Conference Chair
Barbara Hickernell, EF Conferences Director
Brij Moudgil, EF Technical Liaison

08:50 - 12:00 Session 1: Hydrophobicity (R. Pugh; John Ralston)

08:50 - 09:15 D. Chan
The electrostatics of hydrophobicity

09:15 - 09:40 J. Ralston
Surface and capillary forces affecting air bubble-particle interactions in aqueous electrolyte

09:40 - 10:10 COFFEE BREAK

10:10 - 10:35 D. Fuerstenau
The hydrophobicity of talc: wettability, surfactant absorption and floatability.

10:35 - 11:00 TO BE ANNOUNCED

11:00 - 12:00 DISCUSSION

12:15 - 14:00 Lunch

14:00 - 17:00 Free time

17:00 - 18:15 Dinner

18:30 - 21:30 Session 2: Bubble-particle interactions (Roe-Hoan Yoon; H. Schulze)

18:30 - 18:55 E. Thompson
Modeling of flotation deinking of office waste paper

18:55 - 19:20 O. Vinogradova
The drainage of a thin liquid film confined between hydrophobic surfaces

19:20 - 19:50 COFFEE BREAK

19:50 - 20:15 A. Nguyen-Van
On the extant attachment models, based on sliding time and induction time

20:15 - 20:40 Z. Xu
Role of hydrodynamic cavitation in fine particle flotation

20:40 - 21:05 R.-H. Yoon
Optimizing flotation using a rate equation derived from first- principles

21:05 - 21:30 DISCUSSION

21:30 - Social Hours

Tuesday, 13 August

07:00 - 08:20 Breakfast

08:30 - 12:00 Session 3: Electrochemistry in flotation (R. Woods; P. Richardson)

08:30 - 09:10 R. Woods
Chemisorption - the thermodynamically favoured process in the interaction of thiol collectors with sulfide minerals

09:10 - 09:35 P. Richardson
Controlling and modifying the surfaces of sulfide minerals for improved flotation

09:35 - 10:05 COFFEE BREAK

10:05 - 10:30 L. Santos
Aspects on the application of electrochemical concepts to flotation practice

10:30 - 10:55 M. Ruonala
Different aspects of using electrochemical potential measurements in mineral processing

10:55 - 12:00 DISCUSSION

12:15 - 14:00 Lunch

14:00 - 17:00 Free time/visit to University of Turku, Dept. of Applied physics

17:00 - 18:15 Dinner

18:30 - 21:30 Session 4: Sulfide surface characterization (R. StC. Smart; R. Szargan)

18:30 - 19:10 R. StC. Smart
Introduction and critical comparative survey of techniques with applications to practical flotation

19:10 - 19:35 R. Szargan
Studies from EU project on basic research in flotation and flotation applications of scanning microscopes

19:35 - 20:05 COFFEE BREAK

20:05 - 20:30 K. Laajalehto
XPS and SR techniques applied to sulphide surfaces with examples from joint research

20:30 - 20:55 TO BE ANNOUNCED

20:55 - 21:30 DISCUSSION

21:30 - Social hours

Wednesday, 14 August

07:00 - 08:20 Breakfast

08:30 - 12:00 Session 5: Surface characterization in non-sulfide flotation systems (J. Miller; B. Moudgil)

08:30 - 08:55 P. Somasundaran
Infrared and electron spin resonance characteization of oleic acid adsorption in phosphate flotation

08:55 - 09:20 B. Moudgil
Role of surface characterization in adsorption of PED on oxide and silicate materials

09:20 - 09:50 COFFEE BREAK

09:50 - 10:15 J. Miller
Soluble flotation interaction forces as determined by atomic force microscopy

10:15 - 10:40 J. Leppinen
FTIR studies of the adsorption of fatty acid species on calcium minerals

10:40 - 11:05 Drzymala
TITLE TO BE ANNOUCED

11:05 - 12:00 DISCUSSION

12:15 - 14:00 Lunch

14:00 - 16:00 Poster presentations

17:00 - 18:15 Dinner

18:30 - 21:30 Session 6: Reagent interactions at sulfide or metal surfaces
(J. Leppinen; A. Buckley)

18:30 - 18:55 N. Finkelstein
The activation of sulfide minerals

18:55 - 19:20 P. Nowak
Chemical reaction mechanisms in thiol collector - sulfide mineral systems

19:20 - 19:45 G. Senior
Chemical effects in the flotation of complex sulphide ores

19:45 - 20:15 COFFEE BREAK

20:15 - 20:40 W. Forsling
Use of surface complexation models in sulfide mineral flotation

20:40 - 21:05 A. Abramov
Physico-chemical modelling of flotation systems

21:05 - 21:30 DISCUSSION

21:30 - Social hours

Thursday, 15 August

07:00 - 08:00 Breakfast

08:10 - 11:30 Session 7: Reagent interactions at other mineral surfaces
(M. Hellsten; B. Dobias)

08:10 - 08:35 F. Tiberg
Adsorption mechanisms, structures of interfacial layers and adsorption kinetics studied by ellipsometry

08:35 - 09:00 J.O. Gustafsson
Adsorption of carboxylate collectors on magnetite and its influence on the pelletizing process

09:00 - 09:25 H. Rao
Mixed collector systems in flotation

09:25 - 09:50 COFFEE BREAK

09:50 - 10:15 J. Freund
Surfactant interaction at mineral-water and water air interface

10:15 - 10:40 D. Schieder
Investigation of the synergism and antagonism of the adsorption of surfactants on the mineral-water interface

10:40 - 11:30 DISCUSSION

11:45 - 12:45 Lunch

13:00 - 16:00 Session 8: Flotation processes in non-mineral systems (P. Stenius;
R. Pugh)

13:00 - 13:25 J. Berg
Particle bubble interactions in flotation deinking

13:25 - 13:50 R. Pugh
Calcium soaps in deinking flotation; fundamental studies using surface force and coagulation techniques

13:50 - 14:15 K. A. Matis
Ion flotation

14:15 - 14:35 COFFEE BREAK

14:35 - 15:00 R. Gochin
TITLE TO BE ANN0UNCED

15:00 - 15:25 S. Lubetkin
TITLE TO BE ANNOUNCED

15:25 - 16:00 DISCUSSION

16:30 Departure (archipelago cruise & conference dinner on Velkua island)

Friday, 16 August

07:00 - 08:20 Breakfast

08:30 - 12:00 Session 9: Advancing flotation technology (Erik Forsberg;
K. Heiskanen)

08:30 - 08:55 J. Kallioinen
The contradicting hydronynamic requirements in large mechanical flotation cells

08:55 - 09:20 N. J. Bolin
A surface study on a Boliden ore by TOF-LIMS

09:20 - 09:50 COFFEE BREAK

09:50 - 10:15 G. Morizot
Liberation and its role for flowsheet development

10:15 - 10:40 TO BE ANNOUNCED

10:40 - 11:30 DISCUSSION

11:30 - 12:00 CLOSING

12:00 - 14:00 Lunch and departure

POSTERS

Posters describing work which will not be presented orally will be on display in or near the meeting hall throughout the conference. Titles received thus far include:

N.A. Eltekova
Evaluation of Hydrophobity Parameter by Liquid Chromatography Method

M. Rutland
Effect of Substrate on Hydrophobisation by Collector

R.D. Pascoe
Shear Flocculation and Flotation of Hematite Using Sodium Oleate

J. Sablik and K. Wierzchowki
Surface Energy of Coal and Pyrite Wetted by Reagents and Their Flotation Response

H. Fujimoto, M. Matsukata and K. Ueyama
Evaluation of Column Flotation Results with a Film Flotation Method

F. Gourram-Badri, Y. Labuche, P. Conil and G. Morizot
Effect of Froth Zone Characteristics on Flotation

P. Conil, G. Themeli and M. Acosta
Evaluation of Column Flotation Control Strategies by Dynamic Simulation

C.A. Prestidge
Rheological Investigation of Ultrafine Galena Particle Slurries Under Flotation Related Conditions

F.G. Paulsen, J.C. Hassler, D.W. Bousfield and E.V. Thompson
Measurement of Long-Range Bubble/Particle Attractive Forces and Factors Influencing Bubble/Particle Attachment

L. Filippov, R. Houot and R. Joussemet
Physiochemical Mechanisms and Ionic Flotation Possibilities Using Columns for CR6+ Recovery from Sulfuric Solutions

S.F. Jones, K.P. Galvin and G.M. Evans
Critical Nucleation of Bubbles on Hydrophobic Surfaces

S. Tseng
Electrostatic Interactions Between Two Thin Disks of Arbitrary Orientation In an Electrolyte Solution

J-P. Hsu and M-T. Tseng
The Interaction Between Charged Surfaces with a General Boundary Condition

V.E. Vigdergauz, V.A. Chanturiya and T.V. Nedosekina
Galena Surface Hydrophobicity: Electrochemical Study

P.K. Aarinola, V.I. Iline and V.A. Kolesnikov
Electroflotation Removal of ZNS, CUS, and NIS

D. Georgescu
The Study of the Electric Field Influence on Participating Phases in Electrical Flotation Process of Sulphide Minerals

R. Claassen and A. Benecke
Correlation Between the Mineralogical Characteristics and Electrochemical Properties of Gold-Bearing Sulphide Minerals

D.L. Legrand, G.M. Bancroft and H.W. Nesbitt
Surface Characterization of Pentlandite Before and After Oxidation: Comparisons, with Pyrrhotite, ot the Surface and Sub-Surface Species

R. Bokotko, J. Hupka and J.D. Miller
Flotation of Printing Ink from Processwater in an Air-Sparged Hydrocyclone

A.V. Kurkov, V.V. Shatalov, V.A. Boldyrev and A.I. Zarubin
Processes on Surface of Minerals in a Non-Sulphide Flotation System Evaluated by Microcalorimetric Measurements

V.A. Bocharov
Flotation Technology for Non-Ferrous Metal Sulfine Ores Using Ecologically Safe Modifiers

V.G. Stepanenko, Z.R. Urberg and V.I. Karamushka
Extraction of Noble Metal Ultrafine Particles by Biofloccular Flotation

M.M. Monte, F.F. Lins, B. Helen and J.F. Oliveira
Selective Flotation of Gold from Pyrite

A. Marabini, M. Ciriachi and M. Barbaro
Thermodynamic Calculation for Selection of Collectors for Separation of Copper-Zinc-Lead Sulphides by Flotation

G. Contini, A.M. Marabini, V. DiCastro and G. Polzonetti
5-Methyl-2-Mercaptobenzoxazole Adsorbed on Cu2S Surface Studied by Synchrotron Radiation Excited Photoemission

A. Marabini, G. Contini, C. Cozza and M. Barbaro
FTIR Study of Various Derivatives of 2-Mercaptobenzothiazole Adsorbed on PBS

I. Kartio, G. Wittstock, K. Laajalehto, D. Hirsch, J. Simola, S. Kunze, T. Laiho, R. Szargan and E. Suoninen
Detection of Elemental Sulfur on Galena Oxidized in Acidic Solution

H-M. Lu, Y-F. Zhang and Q-C. Chen
A Flotation Study for Effective Separation of Chalcopyrite from Arsenopyrite in Guangxi Shanhu Tin Mine

H-M. Lu
Study on a New Flotation Techniqye of Separating Wollastonite-Quartz Under Alkaline Conditions

I. Gulgonul, M.S. Celik, S. Veeramasuneni and J.D. Miller
Slime Coating Mechanism in Clay/Colemaninte/Collector System as Inferred from Atomic Force Microscopy

E.T. Woodburn and J.J. Cilliers
Kinetic Flotation Modelling Using Froth Image Data

S. Bazin and D. Hodouin
Selection of Flotation Circuit Set Points as a Function of Metal Prices

I.A. Blatov, L.V. Zelenskaia, E.E. Andreev and O.N. Tikhonov
New Technical Ideas in Automated Computer Control of Industrial Flotation Processes

S. Chrissoulis, J. Kim and R. Grant
A Surface Study of Run-of-Mine Fines at Brunswick

M. Baker, R. Dimitrova, J. Rabinowitz and R. Knubovetz
The Separation of Francolite from Calcite and Quartz Via Direct Flotation