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Heat insulation non-burning refractory brick and production method thereof

A technology of refractory bricks and refractory raw materials, applied in the field of refractory materials, can solve the problems of low compressive strength and easy breakage of lightweight refractory bricks, and achieve the effects of reducing energy consumption, reducing heat loss and reducing bulk density

Active Publication Date: 2010-12-29
鞍山钢铁冶金炉材科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the low compressive strength and easy breakage of lightweight refractory bricks, they cannot be used as insulation layers behind the working layers of thermal kilns such as molten steel tanks, molten iron tanks, and rotary kilns with high thermal stress.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] A heat-insulating non-burning refractory brick, which is made of the following components by weight percentage:

[0022] Silica: particle size 0-2 mm 48-56%

[0023] Bauxite: particle size 0-0.088 mm 18-22%

[0024] Ceramsite: particle size 0.1-5 mm 18-22%

[0025] Bentonite: 2-6%

[0026] Phosphoric acid: 6-8%.

[0027] The production method of heat-insulating non-burning refractory brick comprises the following steps:

[0028] 1) Mixing: Add dense refractory raw materials and binders into the mud mill according to the specified particle size and weight ratio, and knead in the mud mill for 5 to 30 minutes;

[0029] 2) Stirring: Put the kneaded mud into the mixer, add light refractory raw materials according to the specified particle size and weight ratio, and stir for 5 to 20 minutes;

[0030] 3) Forming: After stirring evenly, the mud material is machine-pressed or vibrated;

[0031] 4) Drying: put the molded green body into drying equipment, and keep it warm at...

Embodiment 2

[0033] A heat-insulating non-burning refractory brick, which is made of the following components by weight percentage:

[0034] Sillimanite: particle size 0-3 mm 48-50%

[0035] Bauxite: particle size 0-0.088 mm 18-22%

[0036] Fly ash floating beads: particle size 0.1-2 mm 20-22%

[0037] Clay: particle size 0-0.1mm 6-10%

[0038] Brine: 4-8%.

[0039] The production method of heat-insulating non-burning refractory brick comprises the following steps:

[0040] 1) Mixing: Add dense refractory raw materials and binders into the mud mill according to the specified particle size and weight ratio, and mix in the mud mill for 5-10 minutes;

[0041] 2) Stirring: Put the kneaded mud into the mixer, add light refractory raw materials according to the specified particle size and weight ratio, and stir for 8-12 minutes;

[0042] 3) Forming: After stirring evenly, the mud material is machine-pressed or vibrated;

[0043] 4) Drying: put the molded green body into drying equipment, a...

Embodiment 3

[0045] A heat-insulating non-burning refractory brick, which is made of the following components by weight percentage:

[0046] Mullite: particle size 0-6 mm 48-50%

[0047] Bauxite: particle size 0-0.045 mm 24-32%

[0048] Ceramsite: particle size 0-0.1 mm 10-12%

[0049] Clay: 4-10%

[0050] Silica sol: 6-10%.

[0051] The production method of heat-insulating non-burning refractory brick comprises the following steps:

[0052] 1) Mixing: Add dense refractory raw materials and binders into the mud mill according to the specified particle size and weight ratio, and mix in the mud mill for 15-20 minutes;

[0053] 2) Stirring: Put the kneaded mud into the mixer, add ceramsite according to the specified particle size and weight ratio, and stir for 10-15 minutes;

[0054] 3) Forming: After stirring evenly, the mud material is machine-pressed or vibrated;

[0055] 4) Drying: put the molded green body into drying equipment, and keep it warm at 300-360°C for 30-36 hours.

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Abstract

The invention relates to a heat insulation non-burning refractory brick, belonging to the technical field of refractory material. The heat insulation non-burning refractory brick comprises the components by weight percent: 60-90% of compact refractory raw material with the particle size of 0-10mm, 5-30% of light refractory raw material with the particle size of 0-5mm and 2-30% of binding agent. The method takes the compact refractory raw material as main material which is added with part of light refractory raw material to be prepared into the non-burning heat insulation refractory material with the performance between the compact refractory raw material and the light refractory raw material, so that the non-burning heat insulation refractory material has the compression strength and the corrosion resistance of the compact refractory raw material as well as heat preservation and heat insulation performances of the light refractory raw material; and an industrial kiln built by the heat insulation non-burning refractory brick reduces the heat loss and the energy consumption.

Description

technical field [0001] The invention relates to the technical field of refractory materials, in particular to a heat-insulating non-burning refractory brick and a production method thereof. Background technique [0002] Refractory products (refractory bricks) are divided into dense refractory bricks and lightweight refractory bricks. Due to its high volume density, high compressive strength at room temperature (generally greater than 20MPa), and large thermal conductivity (generally greater than 1.10W / m.k), dense refractory bricks are generally used for the working face of masonry industrial kilns; lightweight refractory bricks It has low bulk density, low compressive strength at room temperature (generally 2-3MPa), and small thermal conductivity (generally less than 0.05W / m.k). It is generally used as an insulation layer for the non-working surface of masonry industrial kilns. However, due to the low compressive strength and easy breakage of lightweight refractory bricks, ...

Claims

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Application Information

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IPC IPC(8): C04B35/66B28C3/00B28B3/00B28B1/08B28B11/24
Inventor 于平
Owner 鞍山钢铁冶金炉材科技有限公司
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