Blast fragmentation modelling for a green field open cut gold deposit

Brunton, I. D., Lewis, G. N. and Chitombo, G. P. (2004). Blast fragmentation modelling for a green field open cut gold deposit. In: Explo 2004. Explo 2004, Perth, WA, (81-93). 26-28 July, 2004.


Author Brunton, I. D.
Lewis, G. N.
Chitombo, G. P.
Title of paper Blast fragmentation modelling for a green field open cut gold deposit
Conference name Explo 2004
Conference location Perth, WA
Conference dates 26-28 July, 2004
Proceedings title Explo 2004
Journal name Australasian Institute of Mining and Metallurgy Publication Series
Place of Publication Melbourne, VIC
Publisher AusIMM
Publication Year 2004
Sub-type Fully published paper
ISBN 1 920806 15 6
Start page 81
End page 93
Total pages 13
Collection year 2004
Language eng
Abstract/Summary This paper outlines the methodology of blast fragmentation modeling undertaken for a green field feasibility study at the Riska gold deposit in Indonesia. The favoured milling process for the feasibility study was dump leaching,with no crushing of the ore material extracted from the pit. For this reason,blast fragmentation was a critical issue to be addressed by the study. A range of blast designs were considered with bench heights and blasthole diameters ranging from 4 m to 7 m and 76 mm to 102 mm respectively. Rock mass data was obtained from 19 diamond drill cores across the deposit (total drill length approximately 2200 m). Intact rock strength was estimated from qualitative strength descriptors,while the in situ block size distribution of the rock mass was estimated from the Rock Quality Designation (RQD) of the core.
Subjects E1
290701 Mining Engineering
640203 Precious (noble) metal ores
Q-Index Code E1

 
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Created: Thu, 23 Aug 2007, 19:12:28 EST