Method for preparing copper or nickel powder and electrolysis device based on same
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A technology of copper powder and nickel powder, which is applied in the electrolysis process, electrolysis components, electrodes, etc., to achieve the effect of improving work efficiency, reducing labor intensity and high purity
Active Publication Date: 2013-09-04
辽宁索研科技有限公司
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However, it is still in the development stage, and more work needs to be done to achieve large-scale production
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Embodiment 1
[0022] Example 1, such as figure 1 Shown, a kind of method for preparing copper powder and device thereof are as follows:
[0023] a. prepare copper sulfate electrolyte, copper ion concentration 0.08mol\L, pH=3, the dispersant sodium hexametaphosphate added accounts for 0.1% of the mass percentage concentration of copper sulfate electrolyte;
[0024] b. Inject the prepared electrolyte into the electrolytic cell 4 and the high level tank 3;
[0025] c. Clean up "copper rice" or copper turning chips, and wash with deionized water;
[0026] d. The cleaned copper raw material is directly loaded into the electrolysis frame 6 as a sacrificial anode, and is electrolyzed through graphite electrodes. As the electrolysis process progresses, copper raw materials are added every 1 to 1.2 hours. The electrolytic process conditions are: current density 5A\ dm 2 , the cathode group plate 5 is made of 316 stainless steel plate, the electrolysis temperature is 27-33°C, and the distance betw...
Embodiment 2
[0033] Example 2, such as figure 1 Shown, a kind of method for preparing nickel powder and electrolytic device thereof are as follows:
[0034] a. Prepare nickel chloride electrolyte, use nickel chloride hexahydrate as electrolyte, adjust acidity with hydrochloric acid and ammonia water, nickel ion concentration is 0.04mol / L, pH=4, NH 4 Cl is 10g / L, and the added dispersant polyvinylpyrrolidone accounts for 0.05% of the mass percentage concentration of the nickel chloride electrolyte;
[0035] b. Inject the prepared electrolyte into the electrolytic cell 4 and the high level tank 3;
[0036] c. Clean the nickel plate or recycled waste nickel block, and wash it with deionized water;
[0037] d. The cleaned nickel plate or recycled waste nickel block is directly loaded into the electrolysis frame 6 as a sacrificial anode, and electrolysis is carried out through graphite electrodes. As the electrolysis process progresses, nickel raw materials are added every 1 to 1.2 hours. The...
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Abstract
The invention discloses a method for preparing copper or nickel powder and an electrolysis device based on the same, so as to achieve continuous large-scale production. The method comprises the steps of: preparing electrolyte; clearing metal particles or turning scraps to be powdered to obtain a metal raw material; putting the metal raw material as a sacrificial anode into an electrolysis basket for electrolysis; continuously sending a suspension solution of the metal powder and the electrolyte out to filter and separate the metal powder; cleaning the filtered metal powder with deionized water; vacuum drying the metal powder; mechanically grinding the dried metal powder; and examining a finished product. The electrolysis device comprises an electrolysis tank, a cathode assembly plate, a conductive spindle, a ceramic bearing, a collector, an insulating coupling, a speed reduction motor, the anode basket, a bracket, a scraping brush, a separation tank, an acid-resistant pump and an overhead tank. The device has a compact structure, and the effective cathode area is enlarged by more than five times compared with the roller type electrolysis tank with the equal capacity, so that the working efficiency is greatly improved, and the labor intensity is reduced.
Description
technical field [0001] The invention relates to a method for preparing metal powder by electrolysis and a device thereof, in particular to a method for preparing copper powder or nickel powder and an electrolysis device thereof. Background technique [0002] As an emerging material, fine metal powder has attracted widespread attention and produced many preparation methods. Each method has obvious advantages and disadvantages. Judging from the current situation, the electrolysis method is one of the most promising methods to realize industrialization. The metal powder prepared by the electrolytic method has high purity, good compaction performance, and easy control of particle size. It can obtain fine metal powder that is difficult to prepare by other methods, and is more suitable for preparing metal powder with high electronegativity. [0003] In conventional electrolytic powder production, it is necessary to periodically scrape the powder, which not only reduces the produc...
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