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Preparation method of flaky metal powder

A flake metal and flake powder technology, which is applied in the field of flake metal powder preparation, can solve problems such as low efficiency and complicated process, and achieve the effects of simple process, high product purity and short production cycle

Active Publication Date: 2013-05-29
YANGZHOU SHUANGSHENG ZINC IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The dry ball milling method is simple, but the efficiency is low; the wet ball milling method has the advantages of simple equipment, good grinding effect, and high product qualification rate, but the process is more complicated.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] The preparation method of scaly zinc powder of the present invention, comprises the following steps successively:

[0035] (1) Machining and forming: metal zinc is machined into a plate shape and used as a soluble anode;

[0036] (2) Anode dissolution: In the anode chamber of the electrochemical reactor, the soluble anode prepared in the previous step is used as the anode of the electrochemical reactor, and zinc sulfate and sulfuric acid aqueous solution are used as the electrolyte, on the interface between the soluble anode and the electrolyte Oxidation reaction of zinc occurs, so that the soluble anode is oxidized into zinc ions and enters the anolyte. The electrochemical reactor is a kettle-type container, and it is a double-chamber electrolytic cell; the concentration of zinc ions in the electrolyte is 0.1g / L, and the concentration of sulfuric acid is 5.0 g / L, the anode current density is 100A / m2;

[0037] (3) Solid-liquid separation: the anolyte obtained in the pr...

Embodiment 2

[0046] The preparation method of scaly copper powder of the present invention, comprises the following steps successively:

[0047] (1) Machining and forming: metal copper is machined into a plate shape, and used as a soluble anode;

[0048] (2) Anode dissolution: In the anode chamber of the electrochemical reactor, the soluble anode prepared in the previous step is used as the anode of the electrochemical reactor, and copper sulfate and sulfuric acid aqueous solution are used as the electrolyte, on the interface between the soluble anode and the electrolyte The oxidation reaction of copper occurs, so that the soluble anode is oxidized into copper ions and enters the anolyte. The electrochemical reactor is a tank container and a double-chamber electrolytic cell; the concentration of copper ions in the electrolyte is 2.0g / L, and the concentration of sulfuric acid is 50.0g / L, the anode current density is 500A / m2;

[0049] (3) Solid-liquid separation: the anolyte obtained in th...

Embodiment 3

[0058] The preparation method of scaly iron powder of the present invention, comprises the following steps successively:

[0059] (1) Machining and forming: the metal iron is machined into a plate shape, and used as a soluble anode;

[0060] (2) Anode dissolution: In the anode chamber of the electrochemical reactor, the soluble anode prepared in the previous step is used as the anode of the electrochemical reactor, and iron sulfate and sulfuric acid aqueous solution are used as the electrolyte, on the interface between the soluble anode and the electrolyte The oxidation reaction of iron occurs, so that the soluble anode is oxidized into iron ions and enters the anolyte. The electrochemical reactor is a tubular container and a double-chamber electrolyzer; L, the anode current density is 1500A / m2;

[0061] (3) Solid-liquid separation: the anolyte obtained in the previous step is subjected to solid-liquid separation in a sedimentation type solid-liquid separation device, and the...

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Abstract

The invention relates to a preparation method of flaky metal powder. The preparation method comprises the following steps in sequence: machining a metal to be prepared into flaky powder into a flake and using the flake as a soluble anode; in an anode chamber of an electrochemical reactor, taking sulfate of the metal and sulfuric acid water solution as an electrolyte, oxidizing the soluble anode into corresponding metal ions and enabling the metal ions to enter anolyte; and after solid-liquid separation and anolyte impurity removal, adding an alkyl glycoside surfactant to the anolyte and adjusting the pH value to 5.0-6.5, then injecting the electrolyte into a cathode chamber of the electrochemical reactor, carrying out electrochemical reduction reaction on the cathode and separating out the metal to be prepared through deposition, simultaneously starting an ultrasonic generating device to strip the metal to be prepared on the cathode and deposit the metal to be prepared in the electrolyte below the cathode and then obtaining the qualified flaky metal powder through solid-liquid separation, washing, vacuum drying, screening and packaging. The preparation method has the advantages of reasonable and convenient process, safe and reliable preparation course and good prepared product quality.

Description

technical field [0001] The invention relates to a preparation method of flake metal powder. Background technique [0002] Ultrafine flaky powder of zinc, copper, iron, cobalt, nickel and other metals and alloys means that the particle size is 10-100 The tiny flaky powder particles between m, especially metal and its alloy flake powders have the characteristics of good electrical and thermal conductivity, small particle size, corrosion resistance, smooth surface, and strong fluidity. It has many specific properties and great potential application value in the fields of mechanics, electricity, chemistry and the manufacture of functional materials. Preparation of flake powder particles of metals and their alloys to obtain powder materials with special functions has important applications in many fields. [0003] The production processes for preparing flake powder at home and abroad mainly include chemical method, mechanical crushing method and electrolysis method. [0004] ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25C5/02
Inventor 徐桂森许文林陈新雨
Owner YANGZHOU SHUANGSHENG ZINC IND
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