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| Malcolm
Powell graduated with a BSc (hons) in Physics from the University
of Natal in 1983. He obtained an MSc in Applied Science from
the University of Cape Town in 1988, following a PhD in Applied
Science in 1993. Between 1984 and 1993, he worked as a senior
scientist at Mintek (South African Council for Mineral Technology)
in the areas of tribology, mill liner design and materials selection,
charge motion in mills, and the influence of liner design on
milling efficiency. From 1994 to 1996, he was a consultant to
Liner Design Services, London, writing and marketing the Milltraj
computer program, used to predict the motion of grinding media
in rotary mills. Since 1997, he has been a Senior Research Officer
in the MPRU, responsible for comminution research. In addition,
he is the South African agent for JKTech, providing consulting
services to local industry on comminution circuit optimisation.
He is a Fellow of the South African Institute of Mining and
Metallurgy, and has received the South African Institute of
Tribology prize for "Best Technical Achievement" for
work on liner materials testing. His research interests are
in the area of optimisation of comminution circuits through
sampling and modelling, mill liner design and selection of liner
materials, and the mathematical modelling of the motion of grinding
media in rotary mills. |
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Dr
Frank Shi (JKMRC)
f.shi@mailbox.uq.edu.au |
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Frank
Shi worked for an iron ore company in China for three years
before he was enrolled in university study. He graduated in
1976 from Jiangxi Institute of Metallurgy, China, majoring in
mineral processing. He worked as a research engineer for five
years after graduation. From 1982 to 1988 he was employed as
a lecturer in mineral processing in Jiangxi Institute of Metallurgy
and later appointed to Deputy of Mineral Processing Teaching
and Research which consisted of 35 staff and 300 students. His
major research work in China included the development of ore
sorting machines (Project leader), process control, and optimization
of physical separation processes. He was the winner of the State
Teaching Excellence Awards in 1987. In 1988 he came to the JKMRC
as a visiting academic. In 1990 he was enrolled in the University
of Queensland for postgraduate studies and was awarded the PhD
degree in June 1995 on the topic of slurry rheology and its
effects on grinding. He joined the JKMRC staff since January
1995. He has been mainly working on comminution for P9 Project,
and also involved in dense medium separation and other physical
separation projects for the P9. He has been a Research Fellow
since October 1995. |
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| After
finishing his bachelor (UBC, Mech. Eng., 1983), Peter came to
discover Québec through a summer french language program
in Chicoutimi. Following
a couple of years in the "Royaume du Saguenay", he
went to Université Laval to complete a Master's (1986)
and Doctorate (1992) both in mechanical engineering. In his
master's, Peter worked to develop a simplified DEM charge motion
model which provided, during his doctorate, the basis to proposing
a preliminary media and liner wear model. Both these works brought
him to the JKMRC for a sabbatical year (1997-98) where he was
able to work with Steve Morrell and the comminution group to
validate the charge motion model as well as work to develop
preliminary laboratory tests for steel media impact, abrasion
and corrosive wear. Peter
joined the Department of Mechanical Engineering at McGill University
in 2001 after spending some 10 years with the Université
du Québec en Abitibi-Témiscamingue in mining country
in north-western Québec. Peter is now working to perfect
and validate laboratory wear test procedures that will help
to predict mill total steel media wear as a function of impact,
abrasion and corrosion as well as mill charge motion. |
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| Robert
Sarracino |
| Photo
not available |
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Aubrey
Mainza
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| Aubrey
Mainza graduated top of class with a BSc Eng - Mineral processing
- from the University of Zambia in 1998. Aubrey joined UCT as
a Masters student in 1999, and commenced a research project
under P9M on the novel three-product cyclone. This has been
site based with Aubrey designing and operating a special test
rig. The excellent output from this has led to a conversion
to a PhD degree, which is close to completion. Since June 2002
he has been employed as a Research Officer and as a consultant
engineer in the MPTech commercial branch of the MPRU. Aubrey
leads the site campaign work and has developed an industry reputation
for producing very high quality data. He has surveyed, processed
the samples, and compiled the data on over 20 campaigns, covering
crushing, SAG milling, ball milling, and associated classification
equipment. Areas of expertise cover the surveying of comminution
circuits for modelling; stabilised circuit operation; sample
processing procedures; modelling and simulation with the JKSimMet
simulator; and operation of the hydrocyclone. |
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