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Method of processing un-suspension powdered aluminium

A processing method and non-floating technology, applied in the processing field of non-floating aluminum powder, can solve the problems of difficulty in ensuring product particle size and uniformity, difficult product dispersion and classification, etc., achieving less difficulty in dispersion and classification, and a metallic feel And the effect of good flash effect and strong covering power

Inactive Publication Date: 2007-09-26
NORTHEAST LIGHT ALLOY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a non-floating aluminum powder processing method to overcome the problem that the aluminum powder paste produced by the wet grinding process contains volatile organic components and the dispersion and classification of the product are difficult, and the particle size and uniformity of the product are difficult to guarantee. defect

Method used

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  • Method of processing un-suspension powdered aluminium
  • Method of processing un-suspension powdered aluminium

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specific Embodiment approach 1

[0006] Specific Embodiment 1: The present embodiment will be specifically described below with reference to FIG. 1 . This embodiment is realized by the following steps: 1. Select the wool aluminum powder, the weight ratio of the wool aluminum powder is Fe≤0.3%, Cu≤0.1%, Si≤0.3%, the rest is active Al, and the wool aluminum powder is atomized aluminum Powder, the particle shape of the atomized aluminum powder is spherical, and its particle size is between 5 and 17 microns; 2. Grind the wool aluminum powder in the Φ1500mm×3000mm ball mill 1. The ball mill 1 has a ball capacity of 5 tons. The ball loading capacity is: 2000kg for 10mm, 1500kg for 15mm, 1500kg for 20mm. Nitrogen is used as gas protection in the ball mill 1, grease block is added in the ball mill 1 as an additive, and the weight percentage of the additive in the wool aluminum powder is 0.8% to 1.0%; 3. Blow the ground wool aluminum powder in the ball mill 1 into At the entrance of the cyclone separator 3, the wool ...

specific Embodiment approach 2

[0008] Specific Embodiment 2: The present embodiment will be specifically described below with reference to FIG. 1 . In this embodiment, the use of nitrogen as gas protection in the ball mill 1 is realized in this way: the inlet of the ball mill 1 is connected to the outlet of the feeder 2, the lower outlet of the cyclone separator 3, the outlet of the nitrogen supply pipe 4 and the air outlet of the blower 5, and the ball mill The outlet of 1 is connected to the inlet of cyclone separator 3, the upper outlet of cyclone separator 3 is connected to the inlet of cyclone collector 6, the upper outlet of cyclone collector 6 is connected to the return air outlet of blower 5, and the content of oxygen in the nitrogen in ball mill 1 is 4.5 ±0.3%. Gas protection is the basis for the continuous production of ball milled aluminum powder. Control the oxygen content in the protective gas nitrogen, so that the oxygen content in nitrogen is 4.5±0.3%, so that the aluminum powder will not be ...

specific Embodiment approach 3

[0009] Specific Embodiment Three: The present embodiment will be specifically described below in conjunction with FIG. 2 . The difference between this embodiment and Embodiment 2 is: the air riser 3-2 in the cyclone separator 3 and the helical blade 3-1 fixed on the outer surface of the air riser 3-2 can be arranged along the height direction of the cyclone separator 3. Adjust up. With such an arrangement, the particle size of the aluminum powder separated from the upper outlet of the cyclone separator 3 can be adjusted.

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Abstract

The invention relates to a processing method for no-floating aluminum powder, conquering defects that aluminum powder paste generated by wet grinding technology possesses volatile organic component; the dispersion and the classification of product is difficult; the granularity and the uniformity of product can not be guaranteed. The invention can be realized by following steps. Rough aluminum powder is selected. The rough aluminum powder is set in ball mill to be grinded; nitrogen is used as air protection in the ball mill and oil block is added into the ball mill as additive, which is 0.8% to 1.0% by wt of the weight of rough aluminum powder. The fan is used to blow grinded rough aluminum powder in the ball mill into the input of cyclone separator; rough aluminum powder with relative smaller granularity is transported into the cyclone collector through the upper output of cyclone separator and rough aluminum powder with relative bigger granularity is sent into the ball mill to be grinded continuously. Rough aluminum powder is selected finely in cyclone collector; finished aluminum powder is discharged from the lower output and residual aluminum powder is sent into the ball mill to be grinded continuously.

Description

technical field [0001] The invention relates to a processing method of non-floating aluminum powder. Background technique [0002] The coating industry’s requirements for aluminum powder are constantly changing. The particle size requirements of coating aluminum powder are getting finer and the specific surface area is getting larger. At the same time, the surface modification of aluminum powder is becoming more and more diverse. At present, the non-floating pigment aluminum powder on the market is mostly aluminum powder paste produced by wet grinding process. Due to the production process, it always contains a certain amount of volatile organic compounds when used as a coating. The paint mixes evenly, causing spots to form on the surface of the material being painted. Due to the characteristics of the wet grinding process, most of them adopt the wet screening process, which makes it difficult to disperse and classify the products. The particle size and uniformity of the p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F9/04
Inventor 吕新宇韩书超宋晓辉梁岩石广福金龙兵郑坚曹永亮杨伟刚李越
Owner NORTHEAST LIGHT ALLOY CO LTD
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