The effect of grinding media on copper and gold flotation in the presence of clay minerals

Wei, R., Peng, Y. and Seaman, D. (2013). The effect of grinding media on copper and gold flotation in the presence of clay minerals. In: Leon Lorenzen, World Gold 2013 Conference: Challenges in Gold Mining. Proceedings. 5th World Gold 2013 Conference, Brisbane, QLD, Australia, (283-288). 26-29 September, 2013.

Attached Files (Some files may be inaccessible until you login with your UQ eSpace credentials)
Name Description MIMEType Size Downloads
Author Wei, R.
Peng, Y.
Seaman, D.
Title of paper The effect of grinding media on copper and gold flotation in the presence of clay minerals
Conference name 5th World Gold 2013 Conference
Conference location Brisbane, QLD, Australia
Conference dates 26-29 September, 2013
Proceedings title World Gold 2013 Conference: Challenges in Gold Mining. Proceedings
Place of Publication Carlton, VIC, Australia
Publisher AusIMM: Australasian Institute of Mining and Metallurgy
Publication Year 2013
Sub-type Fully published paper
Open Access Status
ISBN 9781921522956
9781921522963
Editor Leon Lorenzen
Start page 283
End page 288
Total pages 6
Collection year 2014
Language eng
Formatted Abstract/Summary
This study addresses a widespread problem confronting the mining industry: the deleterious effect of clay minerals in flotation. This problem is seemingly exacerbated by the presence of iron contamination from grinding media. The interaction of clay minerals and grinding media in copper and gold flotation was investigated in this study. A low-clay ore and a high-clay ore were obtained from Telfer to represent different contents of clay minerals, while stainless steel and mild steel grinding rods were used to produce different grinding chemistry, in particular, iron contamination. Flotation tests on an unsized and sized basis were conducted to reveal how clay minerals and grinding media affect copper and gold flotation. Iron contamination and the oxidation of copper minerals were quantified by ethylene diamine-tetra acetic acid (EDTA) extraction. It is interesting to find that both clay minerals and iron contamination depressed the flotation primarily in fine particles smaller than 33 µm, and clay minerals played a dominant role. Although flotation of coarser particles greater than 33 µm was less affected by clay minerals and iron contamination, coarser grinding to increase P80 was not an effective way to improve copper and gold flotation for the high-clay ore. This study suggests that to improve copper and gold flotation from clay ores, clay dispersion in conjunction with the minimisation of iron contamination may be required.
Q-Index Code E1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Conference Paper
Collections: School of Chemical Engineering Publications
Official 2014 Collection
 
Versions
Version Filter Type
Citation counts: Google Scholar Search Google Scholar
Created: Sat, 08 Feb 2014, 15:53:38 EST by Dr Yongjun Peng on behalf of School of Chemical Engineering