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A method for separating nano-aluminum powders of different particle sizes

A technology of nano-aluminum powder and particle size, which is applied in the direction of solid separation, chemical instruments and methods, and separation of solids from solids with airflow, which can solve the problems of expensive, bulky separation equipment, and complicated separation procedures, and achieve less loss , good separation effect and simple operation

Active Publication Date: 2018-08-31
河南索顿新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Although these methods have good separation effects, the separation equipment is bulky and expensive, and the separation process is also complicated. It is not the best choice for enterprises with limited conditions and hope for simple operating procedures.

Method used

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  • A method for separating nano-aluminum powders of different particle sizes
  • A method for separating nano-aluminum powders of different particle sizes
  • A method for separating nano-aluminum powders of different particle sizes

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0093] Take 1g of the nano-aluminum powder prepared in (1), disperse in 30mL of absolute ethanol, oscillate ultrasonically for 4 hours, put it into a centrifuge tube after the temperature of the beaker has dropped, centrifuge at 4000rpm for 5 minutes, pour the upper liquid Put it into a beaker and mark it as No. 1, and the nano-aluminum powder at the bottom of the sedimentation centrifuge tube is used in Example 2.

Embodiment 2

[0095] Add 30 mL of dispersant absolute ethanol to the nano-aluminum powder deposited at the bottom of the centrifuge tube in Example 1, after ultrasonic oscillation for 10 minutes, centrifuge at a speed of 3500 rpm for 5 minutes, pour the upper liquid into a beaker and mark it as No. 2, The upper suspension was weighed, and the nano-aluminum powder deposited at the bottom of the centrifuge tube was used in Example 3.

Embodiment 3～8

[0097] Repeat Example 2, the only difference is that the rotational speed of centrifugation is 3000rpm, 2500rpm, 2000rpm, 1500rpm, 1000rpm, 500rpm respectively, and the obtained components are respectively marked as No. 3, No. 4, No. 5, No. 6, No. 7 and No. 8 .

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Abstract

The invention provides a method for separating nanometer aluminum powder with different particle sizes. The method is to disperse the nanometer aluminum powder in a dispersing agent; a dispersing system is centrifugated; and the gradient separation of the nanometer aluminum powder with different particle sizes is realized through gradual reduction of the centrifugal speed. The method, provided by the invention, is simple, feasible, high in separation efficiency and excellent in separation effect; and the particles sizes of all sections of obtained nanometer aluminum powder are not intersected and overlapped.

Description

technical field [0001] The invention relates to a separation technology of nanometer powder, in particular to a separation method of nanometer aluminum powder. Background technique [0002] Aluminum nano-aluminum powder with uneven particle size is obtained when recycling aluminum waste. Aluminum powders with different particle sizes have different application fields. In order to make aluminum powders applicable in different fields, the aluminum powders must be separated. [0003] China's aluminum industry started in the mid-1950s and has a history of more than 60 years. Aluminum is one of the essential basic raw materials for the sustainable and healthy development of a country's national economy. Since the reform and opening up, China's aluminum industry has made great progress in technology and equipment technology. The output and consumption of various aluminum products have increased rapidly with the rapid growth of the five major industries of construction, transpor...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B07B7/08
CPCB07B7/08
Inventor 陶栋梁
Owner 河南索顿新材料有限公司
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