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: 2011-10-19
KUNMING METALLURGY INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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

Examples

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Effect test

Embodiment 1

[0057] Example 1: Pre-purification solution of zinc sulfate containing impurities of cadmium, cobalt, nickel, and copper. The impurity content range is: Cd642.48mg / L, Cu18.33mg / L, Ni23.96mg / L, Co32.05mg / L. The purification process with three-stage cavitation effect produces qualified new electrolyte, such as image 3 Shown.

[0058] Firstly, heat the zinc sulfate solution to 55~85℃ through the heat exchanger 9, and the zinc powder is added to the slurry tank 1 in a conventional manner to adjust the slurry with the zinc sulfate solution at 1.0 to 1.4 times the Cu+Cd impurity content in the zinc sulfate solution. , And then use the transfer pump 3 to inject the zinc sulfate solution into a purification tank 6 through a spray gun 4. The partition 5 in the tank prevents the fierce reflux effect and forms cavitation bubbles, which react in the purification tank. The time is 10 minutes. Delivery pump pressure is 3.8~4.5MPa, delivery pump flow rate is 6.0m 3 / h; The filtrate enters the...

Embodiment 2

[0062] Example 2: A zinc sulfate solution before purification containing impurities of cadmium, cobalt, nickel, and copper. The impurity content range is: Cd454.55mg / L, Cu162.5mg / L, Ni12.5mg / L, Co37.5mg / L. The purification process with two stages of cavitation effect produces qualified new electrolyte solution, and zinc powder is added in the form of slurry. Such as image 3 Shown.

[0063] First, heat the zinc sulfate solution to 55-85°C through the heat exchanger 9. The zinc powder is added to the slurry tank 1 in a conventional manner to adjust the slurry with the zinc sulfate solution at 1.0-1.4 times the Cu+Cd impurity content in the solution, and then The transfer pump 3 is used to inject the zinc sulfate solution after mixing into a purification tank 6 through a spray gun 4 for purification. One stage of purification process is the process of removing copper and cadmium, and the temperature is 55-85°C; the first stage of purification tank has no partitions, and the reacti...

Embodiment 3

[0067] Example 3: The pre-purification solution of zinc sulfate containing impurities of cadmium, cobalt, nickel, and copper. The impurity content range is: Cd636.36mg / L, Cu62.5mg / L, Ni14.02mg / L, and Co58mg / L. A two-stage purification process is adopted to produce qualified new electrolyte. Such as Figure 4 Shown.

[0068] First, heat the zinc sulfate purification solution to 55-85℃ through the heat exchanger 9. The zinc powder is added to the slurry tank 1 at 1.0-1.4 times the Cu+Cd impurity content and 20-40 times the Co+Ni content in the solution. Adjust the slurry with zinc sulfate solution, and add it in a conventional way. After high-speed stirring by the propeller blade stirring device 2 in tank 1, the zinc sulfate solution after mixing is fed into a purification tank 6 by the conveying pump 3, and the propeller blade in tank 2 After the high-speed stirring of the stirring device 2 and the baffle 5, a vortex is generated. The reaction time is 20 minutes. A purification p...

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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 a zinc sulfate solution in wet zinc smelting, and specifically relates to a method and device for purifying a zinc sulfate solution based on the 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 used with a variety of metals to form alloys with better physical and chemical properties. The main products produced by zinc are: metallic zinc, zinc-based alloys, and zinc oxide. These products have a wide range of uses, mainly in the following aspects: [0003] ①It is used for galvanizing, accounting for about 46% of zinc consumption. ②In the manufacture of copper alloy materials, it accounts for about 15% of zinc consumption. ③For zinc alloy, it accounts for about 15% of zinc con...

Claims

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Application Information

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Patent Type & Authority Applications(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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