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High-strength refractory brick and preparation method thereof

A refractory brick and high-strength technology, applied in the field of refractory materials, can solve the problems of short service life, insufficient strength, poor refractoriness, etc., and achieve the effects of low change rate of high temperature re-burning line, improved product performance and low cost

Inactive Publication Date: 2018-07-31
合肥金云新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the refractory bricks on the market have problems such as insufficient strength and poor refractoriness. They are easily damaged during use and have a short service life.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A high-strength refractory brick made of the following raw materials in parts by weight: 15 parts of expanded perlite, 20 parts of diatomite tailings, 3 parts of alumina micropowder, 6 parts of silicon carbide micropowder, 4 parts of graphene, and 1 part of coal gangue , 2 parts of high alumina bauxite, 2 parts of refractory clay, 3 parts of inorganic fiber, 0.5 part of binder, 0.4 part of water reducing agent, 2 parts of foaming agent and 40 parts of deionized water.

[0028] Wherein, the expanded perlite is a kind of lightweight filler with internal pores, and the bulk density is 40-80kg / m 3 , the particle size is below 5mm.

[0029] Wherein, the inorganic fiber is sepiolite fiber.

[0030] Wherein, the binder is pure aluminate cement.

[0031] Wherein, the water reducer is a polycarboxylate water reducer with a water reducing rate of 40%.

[0032] Wherein, the blowing agent is sodium dodecylsulfonate.

[0033] The present invention also provides a preparation met...

Embodiment 2

[0041] A high-strength refractory brick made of the following raw materials in parts by weight: 30 parts of expanded perlite, 40 parts of diatomite tailings, 10 parts of alumina micropowder, 12 parts of silicon carbide micropowder, 8 parts of graphene, and 3 parts of coal gangue , 6 parts of high alumina bauxite, 5 parts of refractory clay, 8 parts of inorganic fiber, 3.5 parts of binder, 1.2 parts of water reducing agent, 6 parts of foaming agent and 60 parts of deionized water.

[0042] Wherein, the expanded perlite is a kind of lightweight filler with internal pores, and the bulk density is 40-80kg / m 3 , the particle size is below 5mm.

[0043] Wherein, the inorganic fibers are aluminum silicate fibers.

[0044] Wherein, the binder is pure aluminate cement.

[0045] Wherein, the water reducer is a polycarboxylate water reducer with a water reducing rate of 40%.

[0046] Wherein, the blowing agent is sodium lauryl sulfate.

[0047] The present invention also provides a p...

Embodiment 3

[0055]A high-strength refractory brick made of the following raw materials in parts by weight: 22.5 parts of expanded perlite, 30 parts of diatomite tailings, 6.5 parts of alumina micropowder, 9 parts of silicon carbide micropowder, 6 parts of graphene, and 2 parts of coal gangue , 4 parts of high alumina bauxite, 3.5 parts of refractory clay, 5.5 parts of inorganic fiber, 1.5 parts of binder, 0.8 part of water reducing agent, 4 parts of foaming agent and 50 parts of deionized water.

[0056] Wherein, the expanded perlite is a kind of lightweight filler with internal pores, and the bulk density is 40-80kg / m 3 , the particle size is below 5mm.

[0057] Wherein, the inorganic fiber is rock wool.

[0058] Wherein, the binder is pure aluminate cement.

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Abstract

The invention discloses a high-strength refractory brick and a preparation method thereof. The high-strength refractory brick is prepared by the following raw materials: expanded perlite, diatomite tailings, alumina micro-powder, silicon carbide micro-powder, grapheme, coal gangue, high-alumina bauxite, refractory clay, inorganic fibers, a bonding agent, a water reducing agent, a foaming agent anddeionized water. The high-strength lightweight refractory brick takes the expanded perlite, the diatomite tailings, the alumina micro-powder, the silicon carbide micro-powder, the grapheme, the coalgangue, the high-alumina bauxite, the refractory clay and the inorganic fibers as main components and is supplemented with processes such as mixing, foaming and high-temperature firing through addingthe bonding agent, the water reducing agent, the foaming agent and other auxiliary ingredients; the prepared high-strength refractory brick has higher strength, excellent fire resistance and low production cost, can meet industry requirements and has a better application prospect.

Description

technical field [0001] The invention relates to the technical field of refractory materials, in particular to a high-strength refractory brick and a preparation method thereof. Background technique [0002] Refractory bricks are refractory materials with a certain shape and size made of refractory clay or other refractory raw materials, light yellow or brown, resistant to high temperatures of 1580°C-1770°C, and are mainly used for building smelting furnaces. According to the preparation process, it can be divided into fired bricks, unfired bricks, electric fused bricks, refractory and heat-insulating bricks; according to the shape and size, it can be divided into standard bricks, ordinary bricks, special bricks, etc. Refractory bricks can be used as high-temperature building materials and structural materials for construction kilns and various thermal equipment, and can withstand various physical and chemical changes and mechanical actions at high temperatures. Refractory b...

Claims

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Application Information

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IPC IPC(8): C04B35/66C04B38/02C04B38/08
CPCC04B35/66C04B38/02C04B38/08
Inventor 谭群英
Owner 合肥金云新材料有限公司
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