Acid-resistant brick for incinerator and preparation method thereof

A technology of acid-resistant bricks and incinerators, applied in the field of materials, can solve the problems of adhesion, corundum brick erosion and peeling, etc.

Inactive Publication Date: 2021-02-26
巩义市新科耐火材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Existing chemical waste liquid incinerators are usually made of corundum. Ordinary corundum bricks have high compressive strength and high temperature corrosion resistance, but there are also shortcomings. Waste liquid will adhere to corundum bricks after burning during use, causing Corundum bricks have serious erosion and peeling phenomenon
In order to solve the deficiency of the existing corundum bricks in anti-corrosion and spalling performance, the invention provides an acid-resistant brick for chemical waste liquid incinerators

Method used

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  • Acid-resistant brick for incinerator and preparation method thereof

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preparation example Construction

[0027] The embodiment of the present invention also provides a preparation method of the above-mentioned acid-resistant brick for an incinerator, which includes:

[0028] S1. Mix aluminum silicate material, coke gemstone, chrome corundum, china clay, feldspar powder, micropowder additive and adhesive to obtain a mixture;

[0029] S2. Cover the mixed material with a damp cloth, and trap the material at room temperature;

[0030] S3. Press-molding the trapped mixture to obtain adobe;

[0031] S4. Fire the adobe at 1500~1700°C to obtain an acid-resistant brick for an incinerator.

[0032] Further, in order to mix the raw materials more fully, the following methods are used to mix the raw materials, including

[0033] S1-1. Blend chrome corundum, china clay, feldspar powder and micropowder additives for 30-60 minutes to obtain mixed powder;

[0034] S1-2. Mix the aluminum silicate material, burnt gem and part of the adhesive for 5-10 minutes to obtain the mixed aggregate;

[0...

Embodiment 1

[0040] This embodiment provides an acid-resistant brick for an incinerator, and its raw materials include:

[0041] 50 parts of aluminum silicate material (1~5 mm), 20 parts of coke gemstone (0.1~1 mm), 15 parts of chrome corundum (320 mesh), 5 parts of china clay, 5 parts of feldspar powder, 2 parts of micropowder additive, and diphosphate 3 parts of aluminum hydrogen solution.

[0042] Its preparation method includes:

[0043] S1. Blend chrome corundum, china clay, feldspar powder and micropowder additives in a pre-mixer for 30 min to obtain a mixed powder;

[0044] Dry-mix the aluminum silicate material and burnt gemstones in a wet mill for 3 minutes, add 2 / 3 of the adhesive and mix for 10 minutes to obtain a mixed aggregate;

[0045] Mix the mixed powder and mixed aggregate for 3 minutes, add the remaining part of adhesive, and continue mixing for 25 minutes to obtain a mixture.

[0046] S2. Cover the mixture with a damp cloth, and store it at room temperature for 24 ho...

Embodiment 2

[0051] This embodiment provides an acid-resistant brick for an incinerator, and its raw materials include:

[0052] 10 parts of the first aluminum silicate material (3~5 mm), 40 parts of the second aluminum silicate material (1~3 mm), 10 parts of the first burnt gemstone (0.1~1 mm), and 10 parts of the second burnt gemstone (320 mesh ) 20 parts, chrome corundum (320 mesh) 15 parts, china clay 15 parts, feldspar powder 10 parts, micropowder additive 5 parts, and aluminum sol 3.5 parts.

[0053] Its preparation method includes:

[0054] S1. Mix the second burnt gemstone, chrome corundum, china clay, feldspar powder, and micropowder additives in a premixer for 60 minutes to obtain a mixed powder;

[0055] Dry-mix the first aluminum silicate material, the second aluminum silicate material, and the first burnt gem in a wet mill for 2 minutes, add 3 / 4 of the adhesive and mix for 5 minutes to obtain a mixed aggregate;

[0056] Mix the mixed powder and mixed aggregate for 5 minutes, a...

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Abstract

An acid-resistant brick for an incinerator relates to the field of materials and comprises the following raw materials: an aluminum silicate material, flint clay, chrome corundum and the like. The meta-acidic aluminum silicate material has good thermal shock stability and acid corrosion resistance. The industrial chromium corundum micro-powder has very strong acid corrosion resistance, and by introducing the industrial chromium corundum micro-powder, not only can the acid substance corrosion resistance of the acid-resistant brick for the incinerator be improved, but also pore channels of the acid-resistant brick for the incinerator are micronized, and permeation of gas or liquid substances is prevented. The formula is scientific and reasonable in collocation, corrosion resistance and stripping resistance can be remarkably improved, and the service life of the incinerator is prolonged. The embodiment of the invention also provides a preparation method of the acid-resistant brick for theincinerator, which is simple and convenient to operate, has low requirements on equipment, can be quickly and efficiently used for producing the acid-resistant brick for the incinerator, and realizeslarge-scale industrial production.

Description

technical field [0001] The invention relates to the field of materials, in particular to an acid-resistant brick for an incinerator and a preparation method thereof. Background technique [0002] In the production of chemical waste liquid treatment, the biggest difference between the burner of the waste liquid recovery device and the ordinary acid gas burner is that a large amount of liquid substances need to enter the furnace, and the waste liquid is thermally decomposed at high temperature. This reaction is an endothermic reaction, so The burner needs to burn fuel and air to provide a lot of heat. After the waste liquid is atomized, it is completely decomposed in the incinerator, and the acid gas is completely reacted in the furnace. The temperature in the furnace is about 1100°C, and the combustion process requires oxygen enrichment. Existing chemical waste liquid incinerators are usually made of corundum. Ordinary corundum bricks have high compressive strength and high ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/18C04B35/622
CPCC04B35/18C04B35/622C04B2235/349C04B2235/3463C04B2235/3217C04B2235/3241C04B2235/77C04B2235/96C04B2235/9607C04B2235/9692
Inventor 宋二鹏宋进朝
Owner 巩义市新科耐火材料有限公司
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