| About this Abstract |
| Meeting |
2024 TMS Annual Meeting & Exhibition
|
| Symposium
|
Process Metallurgy and Environmental Engineering: An EPD Symposium in Honor of Takashi Nakamura
|
| Presentation Title |
New Technologies for Arsenic Stabilization from Smelter and Roaster Wastes |
| Author(s) |
Cristian M. Antonucci |
| On-Site Speaker (Planned) |
Cristian M. Antonucci |
| Abstract Scope |
In Chile, roasting technology removes significant amounts of arsenic, cleaning the concentrates for subsequent smelting. However, the problem moves downstream of the process, in the gas treatment stage where, both in the roaster and in the smelters, the arsenic released and mixed with metallurgical gases is separated as concentrate dust and in the washing solutions. EcoMetales has developed technologies directed to solve these issues and is currently processing the dust from different Codelco´s smelters and the roaster, leaving the arsenic compounds stabilized as scorodite and recovering the copper contained in these residues. Ecometales has developed alternative processes for the stabilization of arsenic present in the washing solutions such as acid plant effluents to obtain environmentally stable arsenic compounds and a process to clean concentrates with high arsenic content, wherein the arsenic present is precipitated as a stable compound. This paper shows the results of these studies. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Environmental Effects, Modeling and Simulation, Recycling and Secondary Recovery |