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Method for recovering copper from copper sulfate solution

A copper sulfate solution and copper recovery technology, applied in the field of copper recovery, can solve the problems of high equipment requirements, high production costs, energy consumption, etc., achieve the effects of reducing production costs, improving recovery rate and purity, and reducing environmental pollution

Inactive Publication Date: 2010-06-30
CHINA ENFI ENGINEERING CORPORATION
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Problems solved by technology

Because this technology adopts the process route of high temperature treatment and adopts strong acid environment treatment, it consumes a lot of energy and causes re-pollution to the environment, and because the process uses methods such as calcination, it has high requirements for equipment and high production costs. , not suitable for large-scale industrial applications

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  • Method for recovering copper from copper sulfate solution
  • Method for recovering copper from copper sulfate solution
  • Method for recovering copper from copper sulfate solution

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Embodiment Construction

[0020] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, and the embodiments described below by referring to the accompanying drawings are exemplary, are only used to explain the present invention, and cannot be construed as explanations for the present invention. limit.

[0021] It should be noted that the term "calcium oxide and / or calcium hydroxide" in the present invention means that calcium oxide (quicklime) or calcium hydroxide (slaked lime) can be used, or a mixture of the two can be added. In actual operation, quicklime (CaO) can be digested with water to obtain milk of lime, the main reaction is CaO+H 2 O=Ca(OH) 2 , milk of lime is used as a mixture of calcium oxide and calcium hydroxide.

[0022] figure 1 A flow chart of the method for recovering copper from copper sulfate solution according to the first embodiment of the present invention is shown. according to figure 1 As shown, calciu...

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Abstract

The invention provides a method for recovering copper from a copper sulfate solution, comprising the following steps of: A) mixing calcium oxide and / or calcium hydrogen carbonate with calcium sulfate as a seed crystal; B) mixing the mixture of the calcium oxide and / or the calcium hydrogen carbonate and the calcium sulfate with the copper sulfate solution to generate a calcium sulfate sediment and a copper hydrogen carbonate sediment; and C) separating the calcium sulfate and copper hydrogen carbonate sediment. The method for recovering the copper from the copper sulfate solution can recover the copper from the copper sulfate solution in the mode of low cost and pollution to recycle resources and also can produce the calcium sulfate (plaster), thereby reducing the production cost and relieving the environmental pollution.

Description

technical field [0001] The invention relates to a method for recovering copper, in particular to a method for recovering copper from a copper sulfate solution. Background technique [0002] At present, in many industrial fields, a large amount of waste liquid containing copper is often produced. For example, acid leaching of nickel-bearing ores or nickel-bearing materials in a hydrometallurgical process produces a solution containing copper sulfate. The traditional treatment method is to heat and evaporate the solution containing copper sulfate to obtain copper sulfate crystals. However, the disadvantages of this treatment method are high cost, low efficiency, large energy consumption, and low purity of the obtained copper sulfate crystals. [0003] For example, Chinese patent CN 1041339 discloses a treatment method for copper sulfate waste liquid, which includes: using compressed air as an oxidant, passing it into the copper sulfate waste liquid of the electroless copper ...

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Application Information

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IPC IPC(8): C22B15/00C22B3/08
CPCY02P10/20
Inventor 王魁珽刘金山陆业大高保军
Owner CHINA ENFI ENGINEERING CORPORATION
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