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Purification process of copper smelting byproduct ammonium perrhenate

A by-product technology of ammonium perrhenate and ammonium perrhenate, applied in the preparation of rhenium compounds, rhenium compounds, inorganic chemistry, etc., can solve the problem of high ion content

Pending Publication Date: 2020-11-03
铜陵铜冠优创特种材料有限公司
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Problems solved by technology

[0004] The purpose of the present invention is to provide a purification process for ammonium perrhenate, a by-product of copper smelting, to solve the problem of high content of sulfur, arsenic, selenium, copper, iron, lead, zinc and other ions in ammonium perrhenate, a by-product of copper smelting

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  • Purification process of copper smelting byproduct ammonium perrhenate

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Embodiment Construction

[0023] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0024] In describing the present invention, it is to be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inner", "surrounding" etc. Indicating orientation or positional relationship is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the components or elements referred to must have a specific orientation, be constructed and operated in a sp...

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Abstract

The invention discloses a purification process of a copper smelting byproduct ammonium perrhenate. The process comprises the following six steps: dissolving, vacuum filtration, resin exchange, evaporation concentration, freezing crystallization and filtration and drying. By regulating the pH value of a crude ammonium perrhenate solution, the dissolving concentration, dissolving temperature, crystallization time, crystallization temperature, stirring rate and special resin are selected, thus preparing the ammonium perrhenate with purity being higher than 99.999%. The problem that the content ofsulfur, arsenic, selenium, copper, iron, lead, zinc and other ions in the copper smelting byproduct ammonium perrhenate is high is solved, the impurities are effectively removed, 73 impurity elementsin the copper smelting byproduct ammonium perrhenate reach 1-5 ppm or below, the recovery rate of ammonium perrhenate is guaranteed, and the recovery rate of ammonium perrhenate is 95% or above.

Description

technical field [0001] The invention belongs to the technical field of ammonium perrhenate purification, and relates to a purification process of ammonium perrhenate, in particular to a purification process of ammonium perrhenate by-product of copper smelting. Background technique [0002] In the copper smelting process, the smelting flue gas contains a small amount of rhenium oxide, which will enter the dirty acid after acid production. The crude and high Ammonium perrhenate, the purity of this crude ammonium perrhenate is ≤99%, and the content of sulfur, arsenic, selenium, copper, iron, lead, zinc and other ions is relatively high, so it needs to be purified to obtain high-purity ammonium perrhenate with a purity of ≥5N , 73 kinds of impurity elements are ≤1-5ppm respectively, and the crystallization rate is >95%, and then it can be used to produce high-purity metal rhenium bars. [0003] The traditional ammonium perrhenate purification process is generally purified by...

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Application Information

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IPC IPC(8): C01G47/00
CPCC01G47/003C01P2006/80
Inventor 梅支舵徐利林朱世银张昕红程惠伦周恒翟奎
Owner 铜陵铜冠优创特种材料有限公司
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