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Bonite composite brick and preparation method thereof

A bonet and composite brick technology, applied in the field of refractory materials, can solve the problems of poor alkali chemical corrosion resistance, low high temperature mechanical properties, and high thermal conductivity, and achieve improved chemical corrosion resistance, low thermal conductivity, and high strength. Effect

Inactive Publication Date: 2019-05-17
无锡市晨光耐火材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, its main problems are (1) poor alkali and chemical corrosion resistance of products; (2) low mechanical properties at high temperature; (3) high thermal conductivity, high energy consumption, etc.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] A preparation method of Bonnet composite brick. The steps of the preparation method of the Bonet composite brick are:

[0030] Step 1. Fully mix 23-32 parts by mass of phosphoric acid solution with a concentration of 60-75% by mass, 10-17 parts by mass of aluminum hydroxide micropowder, 1.5-1.8 parts by mass of oxalic acid powder and 52-61 parts by mass of water Uniform, until complete reaction, prepared into solution I, ready to use.

[0031] Step 2. Mix 46-54 parts of Bonnet granules by mass, add 0.5-1 mass of solution I to continue mixing after mixing evenly, add 33-38 mass of Bonnet fine powder, 12-18 parts by mass of alumina micropowder, plus 0.2-0.8 parts by mass of additives and 2-4 parts by mass of solution I, fully mixed and ready to use.

[0032] Step 3: Cold molding or vibration molding of the materials uniformly mixed in Step 2, and firing at 1500°C to 1550°C after sufficient drying to obtain Bonnet composite bricks.

[0033] The Bonnet composite brick pr...

Embodiment 2

[0035] A preparation method of Bonnet composite brick. The steps of the preparation method of the Bonet composite brick are:

[0036] Step 1. Fully mix 32-41 parts by mass of phosphoric acid solution with a concentration of 60-75% by mass, 15-21 parts by mass of aluminum hydroxide micropowder, 1.1-1.5 parts by mass of oxalic acid powder and 41-52 parts by mass of water Uniform, until complete reaction, prepared into solution I, ready to use.

[0037] Step 2. Mix 54-63 parts of Bonet granules by mass. After mixing evenly, add 0.5-1 part of solution Ⅰ to continue mixing. After fully mixing, add 28-33 parts of Bonet fine powder, 8-15 parts by mass of alumina micropowder, plus 0.2-0.8 parts by mass of additives and 2-4 parts by mass of solution I, fully mixed evenly, and ready to use.

[0038] Step 3. Cold molding or vibration molding of the materials uniformly mixed in Step 2. After being fully dried, they are fired at a high temperature of 1550°C to 1600°C to obtain Bonnet com...

Embodiment 3

[0041] A preparation method of Bonnet composite brick. The steps of the preparation method of the Bonet composite brick are:

[0042]Step 1. Fully mix 39-48 parts by mass of phosphoric acid solution with a concentration of 60-75% by mass, 19-26 parts by mass of aluminum hydroxide micropowder, 0.7-1.1 parts by mass of oxalic acid powder and 31-41 parts by mass of water Uniform, until complete reaction, prepared into solution I, ready to use.

[0043] Step 2. Mix 63-72 parts of Bonnet granules by mass, add 0.5-1 mass of solution I to continue mixing after mixing evenly, add 22-28 mass of Bonnet fine powder, 5-10 parts by mass of alumina micropowder, plus 0.2-0.8 parts by mass of additives and 2-4 parts by mass of solution I, fully mixed and ready to use.

[0044] Step 3: Cold molding or vibration molding of the materials uniformly mixed in Step 2, and firing at 1500°C to 1550°C after sufficient drying to obtain Bonnet composite bricks.

[0045] The Bonnet composite brick prep...

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Abstract

The invention discloses a Bonite composite brick and a preparation method thereof. The preparation method comprises the preparation steps of: firstly, sufficiently mixing a phosphoric acid solution, aluminium hydroxide micro powder, oxalic acid powder and water and uniformly reacting to prepare a solution I; and then mixing Bonite particles, then adding into the solution I, continuing to uniformlymix, then adding Bonite fine powder, aluminium oxide micro powder and an additive, sufficiently and uniformly mixing, then carrying out cold state die pressing or vibration forming, and sufficientlydrying and sintering at a high temperature of 1,500 to 1,600 DEG C to prepare the Bonite composite brick. The Bonite composite brick prepared by the invention has the excellent characteristics of resistance to alkali attack, and meanwhile, compared to a high-purity material with similar density, the Bonite composite brick has low thermal conductivity and high strength, and is good in stability, pollution-free and long in service life.

Description

technical field [0001] The invention belongs to the technical field of refractory materials, and in particular relates to a Bonnet composite brick and a preparation method thereof. technical background [0002] The development of cement kilns has always been aimed at improving economic benefits, reducing energy consumption, and improving product quality. Large-scale new dry-process cement kilns have developed rapidly due to their advantages of high output, high efficiency, energy saving, and environmental protection, with a market share of over 95%. New-type dry-process kilns have become the main choice of domestic large and medium-sized cement plants. [0003] However, due to the high alkali content in the cement kiln, it is easy to cause peeling and cracking of the refractory products in the working layer of the cement rotary kiln. Among them, in the firing zone, decomposition zone, etc., the alkali is replaced by RCl and R 2 SO 4 In the form of volatilization, it conde...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/44C04B35/622C04B35/66
Inventor 许宝元王中华王浩宇
Owner 无锡市晨光耐火材料有限公司
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