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A corrosion inhibition study of steel grinding balls in an oxygen and alkaline environment

Kinsella, Brian, Tan, Yongjun, Pejcic, Bobby, Bosenberg, Shandelle and Bailey, Stuart 2006, A corrosion inhibition study of steel grinding balls in an oxygen and alkaline environment, in EUROCORR 2006 : Reliability management of technical systems : Proceedings of the 2006 European Corrosion Congress, [The Conference], [Maastricht, The Netherlands].

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Title A corrosion inhibition study of steel grinding balls in an oxygen and alkaline environment
Author(s) Kinsella, Brian
Tan, YongjunORCID iD for Tan, Yongjun orcid.org/0000-0002-0765-108X
Pejcic, Bobby
Bosenberg, Shandelle
Bailey, Stuart
Conference name European Corrosion. Congress (2006 : Maastricht, The Netherlands)
Conference location Maastricht, The Netherlands
Conference dates 25-28 Sept. 2006
Title of proceedings EUROCORR 2006 : Reliability management of technical systems : Proceedings of the 2006 European Corrosion Congress
Editor(s) Schmitt, Guenter
Publication date 2006
Conference series European Corrosion Congress
Publisher [The Conference]
Place of publication [Maastricht, The Netherlands]
Keyword(s) corrosion
inhibitors
gold production
steel grinding balls
Summary The corrosion of steel grinding balls is a major recurrent cost for mill operators concerned with the production gold. Subsequently, the use of corrosion inhibitors in production fluids, which is typically at pH >9, is an attractive and economical option. This study reports on the corrosion wear of steel grinding balls under alkaline/oxygen conditions and in presence of cyanide. A fundamental study on the influence of several inorganic-based inhibitors (i.e., nitrite, chromate, silicate, hexametaphosphate) on the corrosion rate of carbon steel was undertaken. Subsequently, the corrosion performances of various inhibitors were evaluated in stirred vessels. Corrosion rates were determined via mass loss and electrochemical methods (i.e., linear polarisation, Tafel). It was observed that inhibitors based upon chromate provide superior protection under the conditions investigated in this study. In lime treated, high chloride waters, chromate gave over 80% protection at levels of 10 100 ppm with no evidence of pitting.
Language eng
Field of Research 109999 Technology not elsewhere classified
Socio Economic Objective 970110 Expanding Knowledge in Technology
HERDC Research category E2.1 Full written paper - non-refereed / Abstract reviewed
Persistent URL http://hdl.handle.net/10536/DRO/DU:30054420

Document type: Conference Paper
Collection: School of Engineering
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