J.N. KOHMUENCH, M.J. MANKOSA, H. THANASEKARAN, A. HOBERT
Minerals Engineering, 121 (2018)
The copper sulﬁde processing ﬂowsheet has remained virtually untouched for decades and follows a logical progression – crush, grind, ﬂoat, regrind and reﬂoat to produce a ﬁnal copper concentrate. Th...
PETAR BODUROV & VASIL GENCHEV
Journal of Multidisciplinary Engineering Science and Technology. 4(1), January 2017
There is an alternative of the spherical grinding bodies. Innovative grinding bodies have shown in university tests with Bond Mill lower values of the Fred Bond Wi i...
A.R. BATCHELOR, A.J. BUTTRESS, D.A. JONES, J. KATRIB, D. WAY, T. CHENJE, D. STOLL, C. DODDS, S.W. KINGMAN
Minerals Engineering, 2017
A pilot scale microwave treatment system capable of treating 10–150 t/h of material at 10–200 kW was designed, constructed and commissioned in order t...
STEFAN NADOLSKI, CHRISTOPHER O'HARA, BERN KLEIN, DAVIDE ELMO & CRAIG J. R. HART
Mining Technology, February 2018
The productivity of milling circuits is sensitive to the size of mill feed. Uncertainty about the size of caved ore presents unique challenges to forecasting and controlling m...
R.E. MCIVOR, K M BARTHOLOMEW, O M ARAFAT AND J A FINCH
Mining Engineering, November 2017
Since its development, the functional performance equation for ball milling (McIvor, 1988) has facilitated a new understanding of industrial circuit cause and effect relationships, lea...
The Energy Saving Technology of Beneficiation of Iron Ore
V V KARMAZIN, M A BIKBOV AND A A BIKBOV
MAGNETIC AND ELECTRICAL SEPARATION, VOL 11 (4), PP 211-224
The qualitative and quantitative evaluation of liberation of economic minerals and thelevel of contamination of the process produc...
Optimisation of installed mill power post-installation of secondary crushing circuit at Northparkes Mines.
Y Sulianto, T Trott, D Morgan, T Bell, F Kock and B G Putland
AusIMM Mill Operators Conference 2016
Northparkes installed and commissioned a secondary crushing circui...
Simplified hybrid semi-autogenous grinding mill control – explanation and practical results at the Porgera concentrator
S Ngunz, F van Zyl, F Orrante, E Beltran, M Westcott and S Wilson
AusIMM Mill Operators Conference 2016
The primary control objective of the project is to...
Comminution is known to be an inefficient user of energy. This makes it the largest energy consumer in many mine sites and therefore a large component of cost. One would therefore have thought that improving comminution energy efficiency would be receiving the undivided attention of the...
Discrete Element Method (DEM) simulation using a breakage model is applied to study a broad range of existing compression based crushers to better understand machine level operation and to demonstrate that such modelling is now possible. Predictions for five types of crushers: jaw crusher,...
Most SAG grinding operations currently use ball size between 5.5 and 6 inch maximum size, However, in most cases the use of these ball sizes hasn't been justified by a phenomenological analysis of the real effect on the grinding process, but rather by trial and error. The analysis of the influence o...
A survey of the comminution energy requirements of gold and copper producing mines has been conducted to provide reliable benchmarking data which can be used to compare comminution energy consumption across different mine sites. The total gold and copper production of the mines included in...
A method for determining the minimum practical energy for comminution was developed and is presented in this paper. An objective of the method was to determine experimentally the energy-breakage relationship for a wide size range in order to evaluate the energy performance of both crushing and grind...
In this paper, the authors undertake a critical review of the Starkey test and the publicly available information related to the test equipment, procedures, and scale-up methodology. The following recommendations are proposed to improve the test method:
1. The test should be...
Life cycle assessments of the mining and mineral processing of iron ore, bauxite and copper concentrate were carried out, focussing on embodied energy and greenhouse gas emissions. The results showed that loading and hauling make the largest contributions to the total gr...
The environmental proﬁle of gold production with regards to embodied energy, greenhouse gas emissions, embodied water and solid waste burden has been assessed using life cycle assessment methodology. Both refractory and non-refractory ores were considered, with cyanidati...
International Journal of Mineral Processing 2004
Despite reservations of a number of researchers concerning the applicability of Bond's equation for relating specific energy to the size reduction of rocks, his approach has become an industry standard.
Data from a large number of pilot and full-s...