Treatment of Pyrite Cinders for Arsenic Removal Using Acid Leaching Process

Abstract:

A craft of concentrated acid-heating reinforced leaching process is investigated for the treatment of a high arsenic pyrite cinder, a common by-product in vitriol industry. The pyrite cinder, containing 57.37% Fe, and 2.78% As, was conducted for the acid leaching process. The results demonstrated that iron concentrate with 60.57% Fe, 0.28% As and 96.23% of iron recovery was obtained under the optimal acid leaching conditions(Sulphuric acid concentration is a mass ratio of 20%, a leaching temperature of 60°C, a liquid-solid ratio of 2:1 and a leaching time of 120 min).This craft can be used to utilize pyrite cinder and produce qualified concentrate as iron-bearing feed for steel industry, which will help to solve the pollution of sulfuric acid residue and extend raw material sourcing for Chinese steel industry.

• Periodical: Advanced Materials Research (Volumes 634-638)
• Pages: 3541-3544
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.634-638.3541
• Online since: January 2013
• Authors: Shao Jun Bai, Shu Ming Wen, He Fei Zhao, Qin Bo Cao, Hai Ying Shen, Dian Wen Liu
• Keywords: Acid Leaching, Arsenic Removal, Concentrated Acid, Heating, Pyrite Cinder

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DOI: 10.1016/j.jhazmat.2008.10.129