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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 improved energy utilization and equipment utilization efficiency

Active Publication Date: 2015-06-17
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 the scaly zinc powder of the present invention includes the following steps in sequence:

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

[0036] (2) Anode dissolution: In the anode compartment of the electrochemical reactor, the soluble anode prepared in the previous step is used as the anode of the electrochemical reactor, with zinc sulfate and sulfuric acid aqueous solution as the electrolyte, at the interface between the soluble anode and the electrolyte The oxidation reaction of zinc occurs, and the soluble anode is oxidized into zinc ions into the anolyte. The electrochemical reactor is a kettle-type container and 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, anode current density is 100A / m2;

[0037] (3) Solid-liquid separation: the anolyte prepared in the previous step is subjected...

Embodiment 2

[0046] The preparation method of the scaly copper powder of the present invention includes the following steps in sequence:

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

[0048] (2) Anode dissolution: In the anode compartment of the electrochemical reactor, the soluble anode prepared in the previous step is used as the anode of the electrochemical reactor, with copper sulfate and sulfuric acid aqueous solution as the electrolyte, at the interface between the soluble anode and the electrolyte The copper oxidation reaction occurs, and the soluble anode is oxidized into copper ions into the anolyte. The electrochemical reactor is a trough 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 prepared in the previous step is...

Embodiment 3

[0058] The preparation method of the scaly iron powder of the present invention includes the following steps in sequence:

[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 compartment of the electrochemical reactor, the soluble anode prepared in the previous step is used as the anode of the electrochemical reactor, with ferric sulfate and sulfuric acid aqueous solution as the electrolyte, at the interface between the soluble anode and the electrolyte The oxidation reaction of iron occurs, and the soluble anode is oxidized into iron ions into the anolyte. The electrochemical reactor is a tubular container and a double-chamber electrolytic cell; the concentration of iron ions in the electrolyte is 5.0g / L, and the concentration of sulfuric acid is 150.0g / L, the anode current density is 1500A / m2;

[0061] (3) Solid-liquid separation: the anolyte prepared in the previous step is sub...

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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] Ultra-fine flake powders of metals and alloys such as zinc, copper, iron, cobalt, nickel, etc. have a particle size of 10-100 The tiny flake powder particles between m, especially metal and its alloy flake powder have the characteristics of good electrical and thermal conductivity, small particle size, corrosion resistance, smooth surface, and strong fluidity. There are many specific abilities and great potential applications in the fields of mechanics, electricity, chemistry and functional material manufacturing. The preparation of metal and its alloy flake powder particles and obtaining powder materials with special functions have important applications in many fields. [0003] The production processes of preparing flake powder at home and abroad mainly include chemical method, mechanical crushing method and electrolytic method. [0004] (1) Chemical method: ...

Claims

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Application Information

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Patent Type & Authority Patents(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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