Next Article in Journal
Metamorphic Evolution of Garnet-Bearing Ultramafic Rocks in the Hujialin Area, Sulu Ultrahigh-Pressure Orogenic Belt, Eastern China
Next Article in Special Issue
High Temperature Pressure Oxidation of a Low-Grade Nickel Sulfide Concentrate with Control of the Residue Composition
Previous Article in Journal
Phosphorus Inactivation in Lake Sediments Using Calcite Materials and Controlled Resuspension—Mechanism and Efficiency
Previous Article in Special Issue
Effect of a Small Amount of Iron Impurity in Sphalerite on Xanthate Adsorption and Flotation Behavior
Open AccessArticle

Research on Behavior of Iron in the Zinc Sulfide Pressure Leaching Process

1
BGRIMM Technology Group, Beijing 100160, China
2
The College of Zijin Mining, Fuzhou University, Fuzhou 350108, China
*
Author to whom correspondence should be addressed.
Minerals 2020, 10(3), 224; https://doi.org/10.3390/min10030224
Received: 13 December 2019 / Revised: 21 February 2020 / Accepted: 24 February 2020 / Published: 29 February 2020
(This article belongs to the Special Issue Hydrometallurgical Processing of Base Metal Sulphides)
Dissolved iron exerts significant effects on mineral leaching, impurity removal, and solution purification in the zinc hydrometallurgy process. To date, iron oxidation and migration behaviors are yet to be fully understood and further research on effective regulation mechanisms of iron is required. In this paper, zinc sulfide concentrate was used as the research object. The behaviors of both Zn and Fe during pressure leaching were investigated for varying temperature, acid addition, and leaching time. At temperature of 100~160 °C, H2SO4/Zn ratio of 0.9:1–1.25:1, and leaching time of 0.5–2.5 h, the zinc extraction increased with temperature, acidity and leaching time. The iron extraction, however, varied differently with increasing temperature, acidity and leaching time: (A) it increased with temperature to 150 °C and then decreased at higher temperature, and (B) displayed an initial increase followed by a decrease with respect to the leaching time. Based on the characteristics of the residue phase, chemical phase analysis was used to analyze the residue in detail. The extent of dissolution of iron-containing minerals and the extent of precipitation of ferric ions during the leaching process were quantitatively calculated. View Full-Text
Keywords: zinc sulfide concentrate; pressure leaching; iron extraction; iron hydrolysis zinc sulfide concentrate; pressure leaching; iron extraction; iron hydrolysis
Show Figures

Figure 1

MDPI and ACS Style

Qin, S.-C.; Jiang, K.-X.; Wang, H.-B.; Zhang, B.-S.; Wang, Y.-F.; Zhang, X.-D. Research on Behavior of Iron in the Zinc Sulfide Pressure Leaching Process. Minerals 2020, 10, 224.

Show more citation formats Show less citations formats
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Back to TopTop