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Dee Bradshaw   Professor  Other 
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Dee Bradshaw published an article in January 2018.
Top co-authors See all
P.J. Harris

592 shared publications

J.A. Finch

299 shared publications

M. Becker

190 shared publications

M. Brennan

146 shared publications

W. Xie

108 shared publications

49
Publications
7
Reads
0
Downloads
243
Citations
Publication Record
Distribution of Articles published per year 
(1989 - 2018)
Total number of journals
published in
 
12
 
Publications See all
Article 3 Reads 0 Citations The business value of best practice process mineralogy N.O. Lotter, W. Baum, S. Reeves, C. Arrué, D.J. Bradshaw Published: 01 January 2018
Minerals Engineering, doi: 10.1016/j.mineng.2017.05.008
DOI See at publisher website
Article 0 Reads 0 Citations Influence of flotation cell hydrodynamics on the flotation kinetics and scale up, Part 2: Introducing turbulence paramet... D.J. Bradshaw, E. Amini, W. Xie Published: 01 January 2017
Minerals Engineering, doi: 10.1016/j.mineng.2016.10.001
DOI See at publisher website
Article 2 Reads 0 Citations Influence of flotation cell hydrodynamics on the flotation kinetics and scale up, Part 1: Hydrodynamic parameter measure... E. Amini, D.J. Bradshaw, W. Xie Published: 01 December 2016
Minerals Engineering, doi: 10.1016/j.mineng.2016.09.024
DOI See at publisher website
Article 1 Read 1 Citation Enhancement of scale up capability on AMIRA P9 flotation model by incorporating turbulence parameters E. Amini, W. Xie, D.J. Bradshaw Published: 01 November 2016
International Journal of Mineral Processing, doi: 10.1016/j.minpro.2016.05.001
DOI See at publisher website
Article 0 Reads 1 Citation Classification of the Major Copper Sulphides into semiconductor types, and associated flotation characteristics N.O. Lotter, D.J. Bradshaw, A.R. Barnes Published: 01 October 2016
Minerals Engineering, doi: 10.1016/j.mineng.2016.05.016
DOI See at publisher website
ABS Show/hide abstract
Recoverable economic copper sulphide minerals such as chalcopyrite, bornite, chalcocite and covellite often occur together in varying proportions in the major copper-bearing ores, and have individual flotation requirements and characteristics. Pyrite also occurs in these ores to varying extents as the sulphide gangue, and is problematic because of its natural tendency to float quickly and easily. In a bulk sulphide float, selectivity against pyrite is desirable, particularly if it does not host other paymetals such as gold or silver. At the same time it is a requirement to float all of the copper sulphides despite their electrochemical differences. The electrochemistry and semiconductor properties of these minerals are reviewed, together with implications for flotation with and without collector addition. Mixed collector systems for the improved flotation of these sulphides are proposed as a solution. The use of xanthate and dithiophosphate in the collector suite allows the co-existence of dixanthogen and free dithiophosphate radical because the latter has a higher redox potential requirement than xanthate to oxidize to the dithiolate. Because some of these minerals require dixanthogen, and others, free thiolate, to generate surface hydrophobicity, a bulk flotation of all the species becomes possible in the overlapping area of Eh and pH between the two dithiolate equilibrium lines on the Pourbaix Diagram. The arsenic-signature copper minerals are added to the study, since many copper operations encounter arsenic as a penalty element in the saleable concentrate. It is shown that the addition of arsenic to the copper and iron sulphides alters the semiconductor and electrochemistry properties, and in turn, its flotation characteristics. The degree of mineral association and liberation between these minerals can be a complicating factor due to textural associations, and should also be considered in the process as a next step.
Article 1 Read 0 Citations Modern practice of laboratory flotation testing for flowsheet development – A review N.O. Lotter, E. Whiteman, D.J. Bradshaw Published: 01 November 2014
Minerals Engineering, doi: 10.1016/j.mineng.2014.04.023
DOI See at publisher website