Green and short smelting process of bismuth sulphide concentrate with pyrite cinder

Release time:2023-01-07

Impact Factor:11.072

DOI number:10.1016/j.jclepro.2022.134348

Journal:Journal of Cleaner Production

Key Words:Bismuth metallurgy, Bismuthinite concentrate, Pyrite cinder, Reductive sulphur-fixing smelting, Reaction mechanism

Abstract:The traditional smelting process of bismuth sulphide concentrate faces problems of low metallic bismuth recovery, high production cost and low-concentration SO2 flue gas pollution. In this study, a clean and efficient smelting process was developed to directly extract bismuth metal from bismuthinite concentrate. The reaction mechanism and phase transformation laws were confirmed by thermodynamic simulation calculation, TG-MS thermal analysis and phase characterization. Firstly, Fe2O3 and Fe3O4 interacted with Bi2S3 to form Bi2O3. The intermediate Bi2O3 was then reduced into metallic Bi, and the element S was fixed as FeS. Results of the smelting simulation experiments showed that 89.25% metallic Bi was recovered. About 38.17% Pb, 33.92% Cu, and 83.98% Ag were enriched in crude bismuth, and 96.37% S was fixed in the matte as raw material for resource recovery and energy utilisation.

Indexed by:Journal paper

Discipline:Engineering

First-Level Discipline:Metallurgical Engineering

Document Type:J

Volume:377

Page Number:134348

Translation or Not:no

Date of Publication:2022-09-29

Included Journals:SCI