Particle shaping method and device thereof

A shaping device and particle technology, used in grinding machines, grinding/polishing equipment, manufacturing tools, etc., can solve the problems of difficulty in combining strength and high temperature performance, low yield strength, etc., and achieve high value-added applications and small aspect ratio. Effect

Inactive Publication Date: 2006-09-06
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although pure copper has high electrical conductivity, thermal conductivity, good corrosion resistance, and is easy to process, its yield strength is low. It is difficult to balance the electrical conductivity, strength, and hi

Method used

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  • Particle shaping method and device thereof
  • Particle shaping method and device thereof
  • Particle shaping method and device thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] The flake graphite provided by Inner Mongolia Baotou Jingyuan Graphite Co., Ltd. contains more than 98% carbon and is pulverized by an impact mechanical pulverizer. The D50 of the product is 40-50 μm. The operating conditions of the fine particle shaping machine are: the rotating speed is 4000rpm, and the processing time is 10min and 15min respectively. The aspect ratio before shaping is 2.84, and the tap density is 0.174g / cm 3 , after 10 minutes of plastic treatment, the length-to-diameter ratio is 1.91, a decrease of 32.75%, and the tap density is 0.275g / cm 3 ; After 15 minutes of surface modification, the aspect ratio is 1.45, which is 48.94% less natural, and the tap density is 0.301g / cm 3 .

Embodiment 2

[0048] The natural microcrystalline graphite provided by Jicai Graphite Mine in Chenzhou, Hunan has a purity of 99% and a particle size of less than 43μm (325 mesh). The operating conditions of the fine particle shaping machine are: the rotating speed is 3500rpm, and the processing time is 5min and 10min respectively. The aspect ratio before shaping is 2.53, and the tap density is 0.861g / cm 3 , after 5 minutes of shaping treatment, the aspect ratio is 1.85, which is reduced by 26.88%, and the tap density is 0.853g / cm 3 ; After 10 minutes of plastic treatment, the aspect ratio is 1.26, which is reduced by 50.20%, and the tap density is 0.846g / cm 3 . Because the unclassified sample of microcrystalline graphite after shaping still contains a part of the ultra-fine graphite powder that was ground off during the shaping process, resulting in a tap density that is lower than the density before shaping; after the ultra-fine graphite powder is removed by an air classifier, Although...

example 3

[0050] The -400 mesh hydrogenated dehydrogenation (HDH) titanium powder purchased on the market has a purity of more than 99%, the content of impurities such as Fe, Si, Cl, C, N, O, and H is 0.75wt%, and the median particle size of the powder is D 50 is 18.47 μm. The operating conditions of the fine particle shaping machine are: the rotating speed is 3000rpm and 5000rpm respectively, and the processing time is 15min.

[0051] parameter number

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Abstract

The invention relates to a particle shaping method and relative device, belonging to the powder further processing technique of material engineering. The invention is characterized in that: via the fine particle shaping system, using mechanical impact to mill and shape the powder particle, while the processed powder material carried by high-speed airflow is fed into the shaping processor; inside the main machine, by the quick impact of high-speed rotational rotor and blades, the material is separated with impacted by rotor and high-speed airflow, and rubbed and sheared between themselves, to be shaped while the edge and angle are finished; the material can be processed into ball shape with smaller length-diameter ratio and high vibrated density. The invention can grade the processed material to attain the products in different graininess and realize the high additive valves of different powder materials.

Description

technical field [0001] The invention relates to a particle shaping method and a device thereof, in particular to a dry processing method for powder materials, which belongs to the powder deep processing technology in the field of material science and engineering. Background technique [0002] With the rapid development of high-tech material industry, powder, as a special material form, is playing an increasingly important role. Different industries not only analyze the composition, purity, particle size and particle size distribution of powder materials, but also the shape and surface of particles. Morphology, powder fluidity and bulk density also put forward more and more stringent requirements. Therefore, in view of the characteristics of powder materials, irregular particles should be shaped microscopically. [0003] 1. The negative electrode material used in the battery industry - natural graphite powder [0004] Most people use zinc-manganese dry batteries on a daily ...

Claims

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Application Information

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IPC IPC(8): B24B1/00B24B31/00
Inventor 盖国胜杨玉芬蔡振芳
Owner TSINGHUA UNIV
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