(9531) AN INVESTIGATION INTO ENVIRONMENTAL EFFECTS ON SLURRY ABRASION BEHAVIOUR OF SEVERAL METALLIC MATERIALS

摘要

For slurry handling equipment and systems in mining and mineral processing operations, the interaction between abrasion and corrosion could be significant due to the abrasive and corrosive environment encountered. In this work, slurry abrasion tests were performed by modifying corrosive and/or abrasive conditions, using specimens of several metallic materials (with various hardness and corrosion resistance). Environmental effects on slurry abrasion behaviour of these alloys are assessed with respect to factors such as slurry corrosivity, abrasivity, cathodic protection, and the length of corrosion exposure, and are correlated to material hardness and corrosion resistance. From pure engineering application point of view, the collective enhancement of slurry abrasion rate by various environmental effects can be effectively assessed through deduction of pure mechanical contribution from the total slurry abrasion rate, which eliminates the need to distinguish the individual components of abrasion-enhanced corrosion, corrosion-enhanced abrasion, and pure corrosion (an endeavour that could be demanding experimentally).