The Analysis of Fe Behavior in Zinc
Pressure Leaching
Longyi Chen
Abstract In the process of Zinc hydrometallurgy, the behavior of Fe determines
the length of the process and has a direct effect on Zinc leaching efficiency, the
comprehensive recovery methods as well as the recovery effect of rare metals such
as Ga, Ge, In, and so on, which is one of the most important factors to be considered
in process selection for Zinc smelting enterprises. This paper analyzes the behavior
of Fe under different leaching temperature, acidity, and pressure in Zinc pressure
leaching from zinc sulphide concentrate to provide a reference and theoretical basis
of process selection for different comprehensive recovery as required.
Keywords Pressure leaching · Goethite · Jarosite · Hematite · Iron removal
Introduction
Zinc sulfide concentrate mainly contains zinc and iron, of which the iron content
is about 5–15%. During Zn hydrometallurgy, the iron in the concentrate is one of
the key concerns in the selection of Zn metallurgical process as it will determine
the length of the process, and will directly affect the zinc leaching rate and the
comprehensive recovery methods and effect of the siderophile scattered metals such
as gallium, indium, and germanium. During the oxygen pressure leaching of the zinc
sulfide concentrate, pressure leaching is conducted under the control of different
temperatures, acidity, and oxygen partial pressure in the autoclave to control the
iron behavior that correspondingly affects the siderophile elements, such as gallium,
germanium, and indium.
L. Chen (B)
CINF Engineering Co., Ltd., Changsha 410019, Hunan, China
e-mail: 180242539@qq.com
© The Minerals, Metals & Materials Society 2020
A. Siegmund et al. (eds.), PbZn 2020: 9th International Symposium
on Lead and Zinc Processing, The Minerals, Metals & Materials Series,
https://doi.org/10.1007/978-3-030-37070-1_77
877
Pressure Leaching
Longyi Chen
Abstract In the process of Zinc hydrometallurgy, the behavior of Fe determines
the length of the process and has a direct effect on Zinc leaching efficiency, the
comprehensive recovery methods as well as the recovery effect of rare metals such
as Ga, Ge, In, and so on, which is one of the most important factors to be considered
in process selection for Zinc smelting enterprises. This paper analyzes the behavior
of Fe under different leaching temperature, acidity, and pressure in Zinc pressure
leaching from zinc sulphide concentrate to provide a reference and theoretical basis
of process selection for different comprehensive recovery as required.
Keywords Pressure leaching · Goethite · Jarosite · Hematite · Iron removal
Introduction
Zinc sulfide concentrate mainly contains zinc and iron, of which the iron content
is about 5–15%. During Zn hydrometallurgy, the iron in the concentrate is one of
the key concerns in the selection of Zn metallurgical process as it will determine
the length of the process, and will directly affect the zinc leaching rate and the
comprehensive recovery methods and effect of the siderophile scattered metals such
as gallium, indium, and germanium. During the oxygen pressure leaching of the zinc
sulfide concentrate, pressure leaching is conducted under the control of different
temperatures, acidity, and oxygen partial pressure in the autoclave to control the
iron behavior that correspondingly affects the siderophile elements, such as gallium,
germanium, and indium.
L. Chen (B)
CINF Engineering Co., Ltd., Changsha 410019, Hunan, China
e-mail: 180242539@qq.com
© The Minerals, Metals & Materials Society 2020
A. Siegmund et al. (eds.), PbZn 2020: 9th International Symposium
on Lead and Zinc Processing, The Minerals, Metals & Materials Series,
https://doi.org/10.1007/978-3-030-37070-1_77
877