|About this Abstract
||Part C-1: Hydrometallurgy 2018
||Redesigning Hydrometallurgical Processes for Better Environmental Performance: New Revenues and the Sustainability of Mining Territories
||Virginia S.T. Ciminelli, Daniel Majuste, Eder L.C. Martins, Adelson D. de Souza
|On-Site Speaker (Planned)
||Virginia S.T. Ciminelli
The competitiveness of the mineral industry is increasingly dependent on the more efficient use of natural resources and therefore, the extraction processes have been modified. The production of electrolytic zinc is taken as case study. The first example is a roasting-leaching-electrowinning(RLE) circuit. The introduction of a Waelz furnace in the flowsheet allows for the recovery of zinc from electric arc furnace dust produced in steelmaking and the treatment of zinc ferrites formed during roasting, thus reducing the generation of wastes in both the steel and zinc production. A second example addresses a unique flowsheet that combines the treatment of zinc sulfide and silicate ores. Improvements related to decreasing water consumption and increasing energy efficiency, turning tailings into additives for agriculture, and into new metal products will be presented. It will be shown that better environmental performance results in new revenues, increasing social approval and the sustainability of mining territories.
||Planned: At-meeting proceedings