Grinding kinetics; Bond test; Mineral liberation; Sulphide gold ore
Abstract :
[en] Within the scope of the evaluation and optimization of a grinding circuit, the breakage and mineral liberation characteristics of three low grade sulphide gold ore blends have been investigated by Bond tests, batch grinding tests, and mineral liberation characterization. The tests were conducted in a size range from 0.063 to 2 mm. It was found that the breakage of all blends follows a first-order behaviour for all feed sizes. The work index was correlated with the quartz content and the breakage rate deceleration parameter, which both showed a linear relationship. The correlation between breakage function fineness parameter and first-order rate constant also satisfied a linear relationship .The breakage parameters established from batch grinding and grindability studies indicate differences in the breakage behaviour of the three ore blends. However, the mineral liberation properties of the valuable phase in three blends show minor differences.
Research Center/Unit :
Technische Universität Bergakademie Freiberg, Institute of Mechanical Process Engineering and Mineral Processing
Disciplines :
Geological, petroleum & mining engineering
Author, co-author :
Wikedzi, Alphonce; Technische Universität Bergakademie Freiberg > Institute of Mechanical Process Engineering and Mineral Processing
Arinanda, Muhammad ; Université de Liège - ULiège > Département ArGEnCo > Traitement et recyclage des matières minérales
Leißner, Thomas; Technische Universität Bergakademie Freiberg > Institute of Mechanical Process Engineering and Mineral Processing
Peuker, Urs Alexander; Technische Universität Bergakademie Freiberg > Institute of Mechanical Process Engineering and Mineral Processing
Mütze, Thomas; Technische Universität Bergakademie Freiberg > Institute of Mechanical Process Engineering and Mineral Processing
Language :
English
Title :
Breakage and liberation characteristics of low grade sulphide gold ore blends
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