Novel high strength refractory brick and production method thereof

A refractory brick, high-strength technology, applied in the field of refractory bricks, can solve the problems of thermal shock stability, linear change rate flexural strength, unsatisfactory heat resistance, low service life of cover plates, insufficient thermal shock stability, etc. Achieve the effects of easy control of shape and dimension accuracy, long service life, and easy organization of production

Inactive Publication Date: 2015-07-29
SHANGHAI HUALIN IND GASES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because the thermal shock stability, linear change rate, flexural strength, and heat resistance of the raw materials used in this product are not ideal, the service life of the cover plate is relatively low, and cracks are prone to occur due to insufficient thermal shock stability during use. The flexural strength is not enough, and it is easy to break when people walk on it

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] (1) Equipped with 10 tons of new high-strength refractory brick masterbatch

[0024] A, weighing selects 6 tons of corundum (aluminum oxide),

[0025] B, Weighing selects 3 tons of mullite;

[0026] C, weigh and select 0.5 tons of first-grade clay;

[0027] D, 0.5 tons of superfine powder binder,

[0028] E. Add bow-shaped CrNi steel fiber 365Kg

[0029] (2) After the above raw materials are stirred evenly, they are put into the mold and vibrated evenly;

[0030] (3) Natural conservation for more than 12 hours;

[0031] (4) Heat treatment to 550°C after demoulding;

[0032] (5) Inspection and packaging after natural cooling.

Embodiment 2

[0034] (1) Equipped with 25 tons of new high-strength refractory brick masterbatch

[0035] A, weighing selects 15 tons of corundum (aluminum oxide),

[0036] B, Weighing selects 7.5 tons of mullite;

[0037] C, weigh and select 1.25 tons of first-grade clay;

[0038] D, 1.25 tons of superfine powder binder,

[0039] E. Add bow-shaped CrNi steel fiber 909.5Kg

[0040] (2) After the above raw materials are stirred evenly, they are put into the mold and vibrated evenly;

[0041] (3) Natural conservation for more than 12 hours;

[0042] (4) Heat treatment to 550°C after demoulding;

[0043] (5) Inspection and packaging after natural cooling.

Embodiment 3

[0045] (1) Equipped with 100 tons of new high-strength refractory brick masterbatch

[0046] A, weighing selects 60 tons of corundum (aluminum oxide),

[0047] B, Weighing selects 30 tons of mullite;

[0048] C, weigh and select 5 tons of first-grade clay;

[0049] D. 5 tons of superfine powder binder,

[0050] E. Add bow-shaped CrNi steel fiber 3650Kg

[0051] (2) After the above raw materials are stirred evenly, they are put into the mold and vibrated evenly;

[0052] (3) Natural conservation for more than 12 hours;

[0053] (4) Heat treatment to 550°C after demoulding;

[0054] (5) Inspection and packaging after natural cooling.

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PUM

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Abstract

The invention relates to a novel high strength refractory brick and a production method thereof. The novel high strength refractory brick comprises, by weight, 50-70 parts of corundum, 20-40 parts of mullite, 1-10 parts of first grade clay, and 1-10 parts of an ultrafine powder binder, and also comprises arched CrNi steel fibers, and 100Kg of the CrNi steel fibers are added to 1m<3> of the refractory brick. Compared with refractory bricks in the prior art, the novel high strength refractory brick provided by the invention has the advantages of high refractoriness and high flexural strength.

Description

technical field [0001] The invention relates to a refractory brick, in particular to a novel high-strength refractory brick and a preparation method thereof. Background technique [0002] CrNi steel fiber concrete flue cover plate is often used on the flue of the hydrogen conversion furnace in the petrochemical industry. It is a refractory shaped product made of high-alumina bauxite as the base material, supplemented with various refractory powders and melt-pumped CrNi steel fibers. . Because the thermal shock stability, linear change rate, flexural strength, and heat resistance of the raw materials used in this product are not ideal, the service life of the cover plate is relatively low, and cracks are prone to occur due to insufficient thermal shock stability during use. The flexural strength is not enough, and it is easy to break when people walk on it. Contents of the invention [0003] The object of the present invention is exactly to provide a kind of high refracto...

Claims

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Application Information

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IPC IPC(8): C04B35/66C04B35/622
Inventor 高嵩任新举王乘东谭子龙蔡建培
Owner SHANGHAI HUALIN IND GASES
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