|About this Abstract
||2020 TMS Annual Meeting & Exhibition
||PbZn 2020: The 9th International Symposium on Lead and Zinc Processing
||Simulation of an Alternative Direct Leaching Process for High Iron Content Zinc Concentrates
||Caio Cesar Spindola Oliveira, Daniel Dayrell Pereira
|On-Site Speaker (Planned)
||Caio Cesar Spindola Oliveira
Based on commercial available high Iron content Zinc concentrates, we developed simulations in the HSC Outotec Software to treat these materials. The goal was to compare the pyro sulfatation process with the high pressure direct leaching. This kind of concentrate is usually avoided in the conventional RLE process due to roaster heat limitations and high Zinc ferrite formation, usually diminishing the Zinc recovery. While the direct leaching has a good recovery, it requires to work under pressure; generates elementary sulfur (requiring extra step for separate); consumption of oxygen/steam, etc. Meanwhile, the sulfatation process can convert the Zn directly to Zinc sulfate; most of iron into hematite; direct production of sulfuric acid; and others advantages. That showed to us that the sulfatation process might be a good alternative for treating high Iron Zinc concentrates in future investments.