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Method for stirring zinc-5silicon nitride pseudo-alloy liquid

A stirring method and silicon nitride technology, applied in chemical instruments and methods, stirring devices, mixers, etc., can solve the problems of large differences, difficulty in uniform distribution of silicon nitride particles, long stirring time, etc., to promote uniform distribution, The effect of shortening the stirring time and shortening the stirring time

Inactive Publication Date: 2011-06-22
BEIJING JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Zinc-5 silicon nitride pseudo-alloy liquid is a pseudo-alloy liquid containing 5wt% silicon nitride particles and 95wt% zinc liquid. For the stirring of zinc-5 silicon nitride pseudo-alloy liquid, due to the physical properties of zinc and silicon nitride particles The difference between the density is larger than the difference between aluminum and graphite particles, and the density of graphite is 1.9-2.2g / cm 3 , the density of aluminum liquid is 2.6~2.8g / cm 3 , the liquid zinc density is 6.3~7.2g / cm 3 , the density of silicon nitride is 3.2~3.5g / cm 3 , so it is more difficult to realize the uniform distribution of silicon nitride particles in the zinc-5 silicon nitride pseudo-alloy liquid, that is to say, the method used to realize the uniform distribution of silicon nitride particles in the zinc-5 silicon nitride pseudo-alloy liquid Stirring time will be longer

Method used

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  • Method for stirring zinc-5silicon nitride pseudo-alloy liquid
  • Method for stirring zinc-5silicon nitride pseudo-alloy liquid
  • Method for stirring zinc-5silicon nitride pseudo-alloy liquid

Examples

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Embodiment approach 1

[0022] Embodiment 1, when the forward inclination β in the length direction of the straight blade is 33°, and the upward inclination γ in the width direction is 79°, the stirring time for uniform distribution of silicon nitride particles is 7 minutes.

Embodiment approach 2

[0023] Embodiment 2, when the forward inclination β in the length direction of the straight blade is 32°, and the upward inclination γ in the width direction is 80°, the stirring time for uniform distribution of silicon nitride particles is 6 minutes and 30 seconds.

Embodiment approach 3

[0024] Embodiment 3, when the forward inclination β in the length direction of the straight blade is 33°, and the upward inclination γ in the width direction is 81°, the stirring time for uniform distribution of silicon nitride particles is 6 minutes and 50 seconds.

[0025] Embodiment 4, when the forward inclination β in the length direction of the straight blade is 31°, and the upward inclination γ in the width direction is 79°, the stirring time for uniform distribution of silicon nitride particles is 6 minutes and 40 seconds.

[0026] Embodiment 5, when the forward inclination β in the length direction of the straight blade is 31°, and the upward inclination γ in the width direction is 81°, the stirring time for uniform distribution of silicon nitride particles is 6 minutes and 40 seconds.

[0027] It can be seen that the zinc-5 silicon nitride pseudo-alloy liquid is stirred under the condition that the forward inclination β is 31-33° in the length direction of the straight...

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Abstract

The invention discloses a method for stirring zinc-5silicon nitride pseudo-alloy liquid and belongs to the field of research on zinc-5silicon nitride pseudo-alloy liquid stirring. Under the conditions that beta inclined upwards in the length direction of a straight blade is 31 to 33 degrees and gamma inclined upwards in the width direction of the straight blade is 79 to 81 degrees, the zinc-5silicon nitride pseudo-alloy liquid is stirred by a straight blade crucible+electromagnetic stirring method, so that silicon nitride particles can be distributed uniformly and quickly, and the stirring time can be shortened to be 7 minutes.

Description

technical field [0001] The invention relates to a stirring method for zinc-5 silicon nitride pseudo-alloy liquid. Background technique [0002] Publication number: CN1919433, title of invention: "A stirring method and device for pseudo-alloy liquid containing light solid particles", expounds the stirring method of aluminum-7 graphite pseudo-alloy liquid, that is, adopts conventional rotating electromagnetic stirring and inner wall cloth with The aluminum-7 graphite pseudo-alloy liquid containing 7wt% graphite particles was stirred by combining the straight blade graphite crucible. In this straight blade crucible + electromagnetic stirring method, rotating electromagnetic stirring causes the pseudo-alloy liquid to produce regular circumferential laminar flow motion, while the straight blades on the inner wall of the crucible change the regular circumferential laminar flow motion state of the pseudo-alloy liquid, The forward inclination angle β in the direction of the blade l...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01F13/08F27D27/00C22C1/10C22C32/00C22C18/00
Inventor 张鹏杜云慧刘汉武
Owner BEIJING JIAOTONG UNIV