Flake zinc and zinc-aluminium alloy powder wet method producing process

A zinc-aluminum alloy powder and production process technology, which is applied in the field of flaky zinc and zinc-aluminum alloy powder wet production process, can solve the problems of easy oxidation of the surface of the finished product, low product covering power, long ball milling time, etc., so as to increase the surface resistance. Oxidative properties, narrow particle size distribution, and the effect of improving the efficiency of ball milling

Inactive Publication Date: 2005-01-26
肖骁
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the wet production process of flaky zinc powder known in the art is usually: the zinc powder raw material, solvent, stearic acid or stearate-based tableting aids are put into a ball mill with a speed of several tens of revolutions per minute (horizontal In formula), the ball milling is carried out, after the ball milling, the slurry is polished and classified, and the solid-liquid separation is obtained to obtain flake zinc powder slurry. During the ball milling, in order to prevent the product from being oxidized during the process, resulting in a decline in the quality of the finished product, the ball milling speed is low, so the ball milling time Long, as described in the US patent US4026710, the ball milling time needs to be more than 10 hours. Although the product quality has been improved, the ball milling time is long and the efficiency is low. The surface of the finished product is easily oxidized and the product hiding power is low.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] Embodiment 1: Get 100kg of 400 mesh zinc powder raw materials, 200kg of 200# solvent oil, 4kg of zinc oxide, 4kg of stearic acid, 2000kg of steel balls and other additives are dropped into the ball mill, with 210-230r / min, such as 220r / min Rotate the ball mill for 120 minutes, dilute the material with 200kg solvent, and put the slurry into the polishing machine for polishing. After the polished slurry is classified and separated from solid and liquid, flake zinc and zinc-aluminum alloy powder slurry is obtained.

Embodiment 2

[0013] Embodiment 2: Get 100kg of 500 mesh zinc powder raw materials, 200kg of 200# solvent oil, 4kg of zinc oxide, 4kg of stearic acid, 2000kg of steel balls and other auxiliary agents and drop them into a ball mill, and use 200kg of solvent after ball milling for 120min at a speed of 220r / min. The material is diluted and discharged, and the slurry is put into a polishing machine for polishing. The polished slurry is classified, solid-liquid separated, and dried to obtain flaky zinc and zinc-aluminum alloy powder.

[0014] According to the production process of above-mentioned two embodiments, the technological parameter of following 3-10 embodiment is different (the parameter that is not listed in the table is the same as embodiment 1 or 2), see following table:

[0015] Example

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PUM

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Abstract

A wet technology for preparing the flaky powder of zinc or Zn-Al alloy includes such steps as proprotioning non-flake powder of zinc or Zn-Al alloy, solvent, assistant and medium, ball grinding, polishing, classifying and solid-liquid separating. Its advantages are short time of ball grinding, high antioxidizing nature, high diameter / thickness rate, and high granularity uniformity.

Description

Technical field: [0001] The invention relates to a production process of pigment powder, in particular to a wet production process of flake zinc and zinc-aluminum alloy powder. Background technique: [0002] At present, the wet production process of flaky zinc powder known in the art is usually: the zinc powder raw material, solvent, stearic acid or stearate-based tableting aids are put into a ball mill with a speed of several tens of revolutions per minute (horizontal In formula), the ball milling is carried out, after the ball milling, the slurry is polished and classified, and the solid-liquid separation is obtained to obtain flake zinc powder slurry. During the ball milling, in order to prevent the product from being oxidized during the process, resulting in a decline in the quality of the finished product, the ball milling speed is low, so the ball milling time Long, as described in the US Patent No. 4,026,710, the ball milling time needs more than 10 hours. Although th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22F9/04
Inventor 肖骁颜学术曾少波曾子高
Owner 肖骁
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