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Method and device for purifying zinc sulfate solution based on action of cavitation effect

A technology of zinc sulfate solution and cavitation effect, applied in the direction of improving process efficiency, etc., can solve the problems of large zinc powder consumption, environmental pollution, high energy consumption, etc., and achieve reduced zinc powder unit consumption, low impurity content, and process flow shortened effect

Active Publication Date: 2013-06-19
KUNMING METALLURGY INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The use of xanthate and β-naphthol can effectively remove cobalt, but the use of xanthate and β-naphthol will cause serious environmental pollution; while the replacement of traditional zinc powder requires high temperature, high energy consumption, and purification time of more than 180 minutes And the consumption of zinc powder is large (the amount of zinc powder in addition to cobalt is as high as 100 to 200 times the cobalt content)

Method used

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  • Method and device for purifying zinc sulfate solution based on action of cavitation effect
  • Method and device for purifying zinc sulfate solution based on action of cavitation effect
  • Method and device for purifying zinc sulfate solution based on action of cavitation effect

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Effect test

Embodiment 1

[0057] Embodiment 1: the zinc sulfate solution before purification containing impurity cadmium, cobalt, nickel, copper, its impurity content range is: Cd642.48mg / L, Cu18.33mg / L, Ni23.96mg / L, Co32.05mg / L. Adopt the purification process of three-stage cavitation effect to produce qualified new electrolytic solution, such as image 3 shown.

[0058] First, the temperature of the zinc sulfate solution is raised to 55-85°C through the heat exchanger 9, and the zinc powder is added to the slurry tank 1 in a conventional manner according to 1.0-1.4 times of the Cu+Cd impurity content in the zinc sulfate solution to be mixed with the zinc sulfate solution. , and then use the transfer pump 3 to inject the zinc sulfate solution after slurry adjustment into a section of purification tank 6 through a spray gun 4, and form cavitation bubbles due to the strong reflux effect caused by the barrier of the partition plate 5 in the tank, and react in a section of purification tank The time is 1...

Embodiment 2

[0062] Embodiment 2: the solution before zinc sulfate purification containing impurity cadmium, cobalt, nickel, copper, its impurity content range is: Cd454.55mg / L, Cu162.5mg / L, Ni12.5mg / L, Co37.5mg / L. The purification process using two-stage cavitation effect produces qualified new electrolytic solution, and zinc powder is added in the form of slurry. Such as image 3 shown.

[0063] First, the zinc sulfate solution is heated to 55-85°C through the heat exchanger 9, and the zinc powder is added to the slurry tank 1 in a conventional manner according to 1.0-1.4 times of the Cu+Cd impurity content in the solution to perform slurry mixing with the zinc sulfate solution, and then The delivery pump 3 is used to inject the zinc sulfate solution after pulp adjustment into the first-stage purification tank 6 through a spray gun 4 for a first-stage purification. The first-stage purification process is the process of removing copper and cadmium, and the temperature is 55-85°C; there ...

Embodiment 3

[0067] Embodiment 3: the zinc sulfate solution before purification containing impurity cadmium, cobalt, nickel, copper, its impurity content range is: Cd636.36mg / L, Cu62.5mg / L, Ni14.02mg / L, Co58mg / L. Two-stage purification process is adopted to produce qualified new electrolytic solution. Such as Figure 4 shown.

[0068] First, the temperature of the solution before zinc sulfate purification is raised to 55-85°C through the heat exchanger 9, and the zinc powder is added to the slurry mixing tank 1 according to 1.0-1.4 times of the Cu+Cd impurity content and 20-40 times of the Co+Ni content in the solution Slurry with zinc sulfate solution, add it in a conventional way, after high-speed stirring by the propeller blade stirring device 2 in tank 1, use the delivery pump 3 to transfer the zinc sulfate solution after slurry mixing to a section of purification tank 6, and pass through the propeller blade in tank 2 After the high-speed stirring of the stirring device 2, it interac...

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Abstract

The invention relates to a method and a device for purifying a zinc sulfate solution based on action of a cavitation effect. The method comprises the following steps: adding zinc powder into a solution before purifying the zinc sulfate, and conveying the solution to a partition plate in a purifying container or forming cavitation effect bubbles through the periodic oscillation action of a vibration device for stripping impurities which are displaced out from the surface of the zinc powder, thereby keeping the reaction surface of the zinc powder exposed at any time, being capable of participating in displacement, purification and removal of the impurities and reducing the consumption amount of the zinc powder; and filtering the solution which passes through a 1-3 grade cavitation effect generation device for acting for 20-50 minutes, and obtaining filtrate which is a new qualified electrolysis solution and filter residue which is high-grade copper-cadmium slag or nickel-cobalt slag. When in purification and removal of cobalt and nickel, the zinc powder, copper sulfate and antimony white powder are further added into the purifying container, the energy consumption is low and the using quantity of the zinc powder is reduced from 100-200 times of the content in traditional displacement of the cobalt by using the zinc powder to 20-50 times of the content.

Description

technical field [0001] The invention belongs to a method for purifying zinc sulfate solution in zinc hydrometallurgy, and in particular relates to a method and device for purifying zinc sulfate solution based on cavitation effect. Background technique [0002] Zinc is an important non-ferrous metal raw material. At present, zinc is second only to copper and aluminum in the consumption of non-ferrous metals. Zinc metal has good calenderability, wear resistance and corrosion resistance, and can be made into alloys with better physical and chemical properties with various metals. The main products produced by zinc are: metal zinc, zinc-based alloy, zinc oxide, these products are widely used, mainly in the following aspects: [0003] ① It is used in galvanizing, accounting for about 46% of zinc consumption. ② In the manufacture of copper alloy materials, it accounts for about 15% of the zinc consumption. ③It is used in zinc alloy, accounting for about 15% of the zinc consumpt...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22B3/22C22B3/02C22B19/00
CPCY02P10/20
Inventor 杨大锦李怀仁刘俊场
Owner KUNMING METALLURGY INST
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