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Sulfuric acid leaching of high iron-bearing zinc calcine

Sulfuric acid leaching of high iron-bearing zinc calcine was investigated to assess the effects of sulfuric acid concentration, liquid- to-solid ratio, leaching time, leaching temperature, and the stirring speed on the leaching rates of zinc and iron. The results showed that the sulfuric acid concen...

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Published in:International journal of minerals, metallurgy and materials metallurgy and materials, 2017-11, Vol.24 (11), p.1211-1216
Main Authors: Yang, Jin-lin, Liu, Ji-guang, Xiao, Han-xin, Ma, Shao-jian
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description Sulfuric acid leaching of high iron-bearing zinc calcine was investigated to assess the effects of sulfuric acid concentration, liquid- to-solid ratio, leaching time, leaching temperature, and the stirring speed on the leaching rates of zinc and iron. The results showed that the sulfuric acid concentration, liquid-to-solid ratio, leaching time, and leaching temperature strongly influenced the leaching of zinc and iron, whereas stirring speed had little influence. Zinc was mainly leached and the leaching rate of iron was low when the sulfuric acid concentration was less than 100 g/L. At sulfuric acid concentrations higher than 100 g/L, the leaching rate of iron increased quickly with increasing sulfuric acid concentration. This behavior is attributed to iron-bearing minerals such as zinc ferrite in zinc calcine dissolving at high temperatures and high sulfuric acid concentrations but not at low temperatures and low sulfuric acid concentrations.
doi_str_mv 10.1007/s12613-017-1513-3
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ispartof International journal of minerals, metallurgy and materials, 2017-11, Vol.24 (11), p.1211-1216
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1869-103X
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source Springer Nature
subjects acid
calcine
Ceramics
Characterization and Evaluation of Materials
Chemical elements
Chemistry and Materials Science
Composites
Corrosion and Coatings
Dust
ferrite
Glass
high
High temperature
Iron
iron-bearing
Leaching
Low temperature
Materials Science
Metallic Materials
Natural Materials
Particle size
rate
Raw materials
Stirring
sulfuric
Sulfuric acid
Sulfuric acid leaching
Surfaces and Interfaces
Temperature
Thin Films
Tribology
Ultrasonic imaging
zinc
Zinc ferrites
title Sulfuric acid leaching of high iron-bearing zinc calcine
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