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Isometric spherical magnesium material as well as preparation method thereof and application in producing dispersion-type magnesium ventilated plug

A breathable plug and spherical technology, which is applied to the field of radial spherical magnesium material and its preparation, can solve the problems of insufficient air blowing strength, poor ventilation effect of the breathable plug, unstable air supply effect, etc., and achieves good effect, good ventilation, Channels have a uniform effect

Active Publication Date: 2018-07-27
营口市瑞福来耐火材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When continuing to use the particle size ratio of the imported technology, it is found that the air permeability of the prepared product is not ideal, and the air blowing intensity cannot meet the user's requirements
[0006] The main reason for the poor ventilation effect of the vent plug and the unstable air supply effect is that the particle shape of the selected raw materials does not meet the special requirements of this specific state, so the key to solve this problem is to make nearly round particles in a targeted manner

Method used

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  • Isometric spherical magnesium material as well as preparation method thereof and application in producing dispersion-type magnesium ventilated plug
  • Isometric spherical magnesium material as well as preparation method thereof and application in producing dispersion-type magnesium ventilated plug
  • Isometric spherical magnesium material as well as preparation method thereof and application in producing dispersion-type magnesium ventilated plug

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] Example 1 A kind of equal-diameter spherical magnesium raw material for producing diffused magnesium gas vent plug

[0047] (1) Made from the following raw materials by weight percentage:

[0048]

[0049] (2) The preparation method is as follows:

[0050] 1. Slowly add dextrin to water at 90-100°C, stir evenly to fully dissolve the dextrin into the water, and let it cool for later use;

[0051] 2. Put 97% high-purity magnesia with a particle size of 40 mesh, 100 mesh, and 200 mesh and 95% lightly burned magnesium powder with a particle size of 200 mesh into a high-speed mixer, mix at a low speed for 1.5 minutes, and set the operating parameters of the high-speed mixer as follows: granulation The revolution speed of the machine turntable is 36r / min, and the speed of the high-speed rotor is 288r / min;

[0052] 3. Add the dextrin aqueous solution obtained in step 1, mix at high speed for 8 minutes, and set the operating parameters of the high-speed granulation equipme...

Embodiment 2

[0056] Example 2 A kind of equal-diameter spherical magnesium raw material for producing diffused magnesium gas vent plug

[0057] (1) Made from the following raw materials by weight percentage:

[0058]

[0059] (2) The preparation method is as follows:

[0060] 1. Slowly add dextrin to water at 90-100°C, stir evenly to fully dissolve the dextrin into the water, and let it cool for later use;

[0061]2. Put 97% high-purity magnesia with a particle size of 40 mesh, 100 mesh, and 200 mesh and 95% lightly burned magnesium powder with a particle size of 200 mesh into a high-speed mixer, and mix at a low speed for 2 minutes. The operating parameters of the high-speed mixer are set as: granulation The revolution speed of the machine turntable is 36r / min, and the speed of the high-speed rotor is 288r / min;

[0062] 3. Add the dextrin aqueous solution obtained in step 1, mix at high speed for 7 minutes, and set the operating parameters of the high-speed granulation equipment as f...

Embodiment 3

[0067] Example 3 A kind of equal-diameter spherical magnesium raw material for producing diffused magnesium gas vent plug

[0068] (1) Made from the following raw materials by weight percentage:

[0069]

[0070] (2) The preparation method is as follows:

[0071] 1. Slowly add dextrin to water at 90-100°C, stir evenly to fully dissolve the dextrin into the water, and let it cool for later use;

[0072] 2. Put 97% high-purity magnesia with a particle size of 40 mesh, 100 mesh, and 200 mesh and 95% lightly burned magnesium powder with a particle size of 200 mesh into a high-speed mixer, mix at a low speed for 1 minute, and set the operating parameters of the high-speed mixer as follows: granulation The revolution speed of the machine turntable is 36r / min, and the speed of the high-speed rotor is 288r / min;

[0073] 3. Add the dextrin aqueous solution obtained in step 1, and mix at high speed for 6 minutes. The operating parameters of the high-speed granulation equipment are ...

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Abstract

The invention relates to an isometric spherical magnesium material as well as a preparation method thereof and an application in producing dispersion-type magnesium ventilated plug. The isometric spherical magnesium material with granularity respectively of 1 to 0.5mm, 0.5 to 0.3mm and less than 0.3mm is prepared by mixing 97 percent high-purity magnesia with the granularities of 40 meshes, 100 meshes and 200 meshes and 95 percent caustic-burned magnesia powder with the granularity of 200 meshes and calcium lignosulphonate and dextrin aqueous solution. The dispersion-type magnesium ventilatedplug produced by adopting the obtained isometric spherical magnesium material as a raw material has the following performance: the air permeability is 29 to 36 Nm<3> / h, the volume density is 2.57 to 2.62 g / cm<3>, and the pressure-resisting strength is 42.5 to 56.3MPa. Compared with the conventional raw material, the porosity of the isometric spherical magnesium material prepared by the invention is increased by 10 to 15 percent, and the prepared dispersion-type ventilated plug is more uniform in ventilated channels and better in ventilated effect.

Description

technical field [0001] The invention relates to an equal-diameter spherical magnesium raw material for producing a diffused magnesium venting plug and a preparation method thereof, and the application of the equal-diameter spherical magnesium raw material in the production of a diffused magnesium venting plug. Background technique [0002] The venting plug is a production technology that was introduced from Kurosaki, Japan in the late 1980s and matched with continuous casting refractory materials. The principle is that after the equal-diameter spheres are closely arranged, the gaps between the spheres form a continuous channel, and the continuous channel is used to transport the refining gas into the molten steel during high-temperature smelting, so as to stir the ingredients and balance the temperature. [0003] The starting point of this principle is to use the gaps generated by the accumulation of equal-diameter spheres as gas channels, so the size and shape of the raw ma...

Claims

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Application Information

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IPC IPC(8): C04B35/043C04B38/00C21C7/072
CPCC21C7/072C04B35/043C04B38/0041C04B2235/95C04B38/0074
Inventor 杨红陈晓林郝东
Owner 营口市瑞福来耐火材料有限公司
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