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Corrosion of Cast Iron Mill Plates in Wet Grinding

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Author(s): Anthony ANDREWS | Samuel KWOFIE

Journal: Leonardo Electronic Journal of Practices and Technologies
ISSN 1583-1078

Volume: 9;
Issue: 17;
Start page: 97;
Date: 2010;
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Keywords: Iron | Weight loss | Rust | Selective oxidation | Wear

ABSTRACT
Corrosion studies were carried out on two different maize grinding plates. Maize was soaked in water for three days and the water decanted and used as electrolyte. Mass loss and pH measurements were carried out every 3 days for 15-day period. Results show that, for each plate, mass loss and pH increased with exposure time. Corrosion rates determined from mass loss data was found to be strongly dependent on pH. The observed behaviour may be explained in terms of the chemical composition and/or microstructures of the plates. Results are briefly discussed in terms of the contribution of corrosion to wear.
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