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A kind of drain brick and its preparation method

A technology of pure calcium aluminate cement and particle size, which is applied in the field of refractory materials, can solve the problems of high cost of drain bricks, and achieve the effects of low cost, uniform overall performance, and high cost performance

Active Publication Date: 2020-04-14
河南新拓耐火材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, corundum, or even pure corundum, is used for vibration molding to prepare drain bricks, resulting in high cost of drain bricks

Method used

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  • A kind of drain brick and its preparation method
  • A kind of drain brick and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Prepare the drain bricks as follows:

[0041] 1. Weigh the following raw materials and mix them evenly:

[0042] Homogenized bauxite clinker 60Kg, wherein, Al in the homogenized material 2 o 3 The mass fraction is 78%. The homogenized material is composed of a homogenized material with a particle size of 5-3 mm, a homogenized material with a particle size of 3-1 mm, and a homogenized material with a particle size of 1-0 mm. The mass ratio 1:2:2, the density of the homogenized bauxite clinker is 2.8g / cm 3 ;

[0043] 20Kg of corundum, wherein the corundum is composed of corundum with a particle size of 1-0mm and corundum powder with a particle size of 240 mesh, the corundum with a particle size of 1-0mm and the corundum with a particle size of 240 mesh The mass ratio of the powder is 1:3, the corundum is white corundum, and the density of the corundum is 3.5g / cm 3 ;

[0044] Spinel 10Kg, the particle size of described spinel is 310 orders;

[0045] Al 2 o 3 20Kg...

Embodiment 2

[0051] Referring to the method described in Example 1 to prepare the drain brick, the only difference is that the ratio of the amount of each raw material is different (the particle size of each raw material is the same as that of Example 1), specifically, the homogenized bauxite clinker 50Kg , corundum 25Kg, spinel 15Kg, Al 2 o 3 25Kg, pure calcium aluminate cement 3Kg, silicon dioxide 1Kg and ADS 0.2Kg; Wherein, in the described homogenized alumina clinker, Al 2 o 3 The quality score is 75%.

Embodiment 3

[0053] Referring to the method described in Example 1 to prepare the drain brick, the only difference is that the ratio of the amount of each raw material is different (the particle size of each raw material is the same as that of Example 1), specifically, the homogenized bauxite clinker 70Kg , corundum 15Kg, spinel 8Kg, Al 2 o 3 15Kg, pure calcium aluminate cement 8Kg, silicon dioxide 2Kg and ADS 0.1Kg; Wherein, in the described homogeneous bauxite clinker, Al 2 o 3 The quality score is 85%.

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Abstract

The invention relates to a drain brick and a preparation method thereof. The drain brick of the present invention includes a drain brick main body, wherein, in parts by weight, the drain brick main body is mainly prepared from the following raw materials: 50-70 parts of homogenized bauxite clinker, 15-25 parts of corundum , 8-15 parts of spinel, Al 2 o 3 15 to 25 parts, 3 to 8 parts of pure calcium aluminate cement, 1 to 2 parts of silicon dioxide and 0.1 to 0.3 parts of additives; wherein, the Al 2 o 3 The mass fraction is 75-85%. The drain brick of the present invention has the advantages of excellent performance, safety and reliability, low cost and high cost performance. The preparation method of the invention is simple to operate, does not need high-temperature sintering, and can be formed by vibration.

Description

technical field [0001] The invention relates to the field of refractory materials, in particular to a drain brick and a preparation method thereof. Background technique [0002] With the development of fast and efficient continuous casting and secondary refining technology and process, the sliding nozzle (Sliding Nozzle, SN for short) system is becoming more and more important in the modern iron and steel smelting process, becoming an indispensable part of smelting. It is a control device for molten steel in the casting process of the continuous casting machine. It can precisely adjust the water flow from the ladle to the continuous casting tundish, so that the inflow and outflow of molten steel can be balanced, so that the continuous casting operation is easier to control. The sliding nozzle system has been developed rapidly because of its good controllability and the ability to improve steelmaking production efficiency. Now, the sliding nozzle system is widely used at hom...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22D41/54C04B35/101
CPCB22D41/54C04B35/101C04B2235/3222C04B2235/3418C04B2235/5427C04B2235/5436C04B2235/602C04B2235/77C04B2235/96
Inventor 李巍马建民吴红梅刘光良赵飞飞
Owner 河南新拓耐火材料有限公司
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