K. Mayhew, H. Salomon-De-Friedberg
The increasing proportion of arsenic-bearing copper concentrates in the supply to the copper industry presents significant challenges for miners and smelters, as existing blending strategies to reduce average arsenic levels are becoming unsustainable. This study evaluates the CESL Cu-As Technology as a viable alternative to traditional smelting processes, which has benefits including simultaneous leaching and precipitation of arsenic in a singular, efficient step while achieving high copper extractions. We undertook six fully-integrated pilot campaigns, testing feeds with arsenic concentrations ranging from ~1% to 12%. The findings focus on the behavior of arsenic in the leaching/precipitation process, the operational factors influencing it, and the characteristics of the resulting iron-arsenic residue that offers a sustainable solution. Results indicated copper extractions nearing 99% and arsenic deportment to residue also at 99%. The residue exhibited rapid settling rates exceeding 15 m/hr and underwent rigorous stability testing, confirming the stability and effectiveness of the scorodite-bearing residues for arsenic management. This innovative technology enhances revenue prospects and environmental compliance for stakeholders involved in processing copper-arsenic ores and integrates the treatment of hazardous arsenic-containing by-products, thereby maximizing resource recovery and environmental safety.
@article{75a582dc-14d2-4d72-8a65-0842f43c87f2,
title={SCORODITE IN THE CESL PROCESS FOR COPPER-ARSENIC CONCENTRATES},
author={K. Mayhew and H. Salomon-De-Friedberg},
year={2011},
language={en}
}TY - JOUR TI - SCORODITE IN THE CESL PROCESS FOR COPPER-ARSENIC CONCENTRATES AU - K. Mayhew AU - H. Salomon-De-Friedberg PY - 2011 LA - en ER -
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