Study on the Removal of Arsenic in Pyrite Cinder by Acid Leaching

Yan Li; Zheng Xu; Guang Wei Zhang

doi:10.4028/www.scientific.net/AMR.781-784.2114

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 781-784Study on the Removal of Arsenic in Pyrite Cinder...

Study on the Removal of Arsenic in Pyrite Cinder by Acid Leaching

Abstract:

For effective utilization of sulfate slag, the content of iron (Fe) should higher than 60%, while the content of asenic (As) should lower than 0.05%. A sulfate slag pretreated by magnetic separation-gravity separation, contains Fe 58.61% and As 0.33%, and the forms of Fe and As are mainly Fe₂O₃ and FeAsO₄. To obtain qualified Fe ore concentrate product, chemical leaching conditions was used to remove As. Results show that the the optimal conditions are-0.074mm 75% grinding fineness, 30 °C, 15 g/L initial acid, 5/1 liquid-solid ratio, 350 rpm mixing intensity and 60 min leaching time. The obtained qualified product contains Fe 61.85%, As 0.045%, and Fe recovery rate is 98.63%.

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Periodical:

Advanced Materials Research (Volumes 781-784)

Pages:

2114-2119

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.781-784.2114

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Online since:

September 2013

Authors:

Yan Li, Zheng Xu, Guang Wei Zhang

Keywords:

Acid Leaching, Arsenic Removal, Pyrite Cinder

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