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Preparation method of high-corrosion-resistance pleonaste brick

A spinel brick and magnesia-iron technology, which is applied in the field of preparation of high-corrosion magnesia-iron spinel bricks, can solve problems such as short service life, improve thermal shock resistance, increase service life, and improve high-temperature corrosion resistance performance effect

Inactive Publication Date: 2019-11-22
郑州瑞泰耐火科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the deficiencies of the prior art, the present invention provides a method for preparing high-corrosion magnesia-iron spinel bricks, which has the advantages of strong corrosion resistance, reduced porosity and improved thermal shock stability, etc., and solves the problem of the current cement The problem of short service life of kiln refractories

Method used

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  • Preparation method of high-corrosion-resistance pleonaste brick

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Effect test

Embodiment 1

[0025] A high-corrosion-resistant magnesia-iron spinel brick, whose raw materials include the following ingredients: 85 parts of high-purity large-crystal fused magnesia, 15 parts of ultra-fine fused magnesia powder, and 10 parts of metal magnesium powder And 2 parts of binding agent, the binding agent is water glass, the content of magnesium oxide in the high-purity large crystal fused magnesia is 88%, and the content of ferric oxide is 3%.

[0026] A method for preparing a high-corrosion magnesia-iron spinel brick, comprising the following steps:

[0027] S1. Prepare high-purity large crystal fused magnesia, ultra-fine fused magnesia powder, metal magnesium powder and binder as raw materials, and pulverize the bulk raw materials;

[0028] S2, screening the crushed raw materials, and then finely crushing the raw materials;

[0029] S3. Mix and grind the finely crushed raw materials and binders, place them in a high-ton brick press and press them according to the required bri...

Embodiment 2

[0034] A high-corrosion-resistant magnesia-iron spinel brick, whose raw materials include the following ingredients: 88 parts of high-purity large-crystal fused magnesia, 20 parts of ultra-fine fused magnesia powder, and 20 parts of metal magnesium powder And 4 parts of binding agent, the binding agent is sodium tripolyphosphate, the content of magnesium oxide in the high-purity large crystal fused magnesia is 92%, and the content of ferric oxide is 4%.

[0035] A method for preparing a high-corrosion magnesia-iron spinel brick, comprising the following steps:

[0036] S1. Prepare high-purity large crystal fused magnesia, ultra-fine fused magnesia powder, metal magnesium powder and binder as raw materials, and pulverize the bulk raw materials;

[0037] S2, screening the crushed raw materials, and then finely crushing the raw materials;

[0038] S3. Mix and grind the finely crushed raw materials and binders, place them in a high-ton brick press and press them according to the ...

Embodiment 3

[0043] A high-corrosion-resistant magnesia-iron spinel brick, whose raw materials include the following ingredients: 90 parts of high-purity large-crystal fused magnesia, 25 parts of ultra-fine fused magnesia powder, and 25 parts of metal magnesium powder And 5 parts of binding agent, the binding agent is sodium hexametaphosphate, the content of magnesium oxide in the high-purity large crystal fused magnesia is 98%, and the content of ferric oxide is 5%.

[0044] A method for preparing a high-corrosion magnesia-iron spinel brick, comprising the following steps:

[0045] S1. Prepare high-purity large crystal fused magnesia, ultra-fine fused magnesia powder, metal magnesium powder and binder as raw materials, and pulverize the bulk raw materials;

[0046] S2, screening the crushed raw materials, and then finely crushing the raw materials;

[0047] S3. Mix and grind the finely crushed raw materials and binders, place them in a high-ton brick press and press them according to the...

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Abstract

The invention discloses a preparation method of a high-corrosion-resistance pleonaste brick, and relates to the technical field of environmental protection. Raw materials comprise the following components: 85-90 parts of high-purity macrocrystalline fused magnesite, 15-25 parts of ultrafine fused magnesite powder, 10-25 parts of magnesium metal powder and 2-5 parts of a binding agent. According tothe brick, the high-purity macrocrystalline fused magnesite is adopted as a main raw material; the superfine fused magnesite powder and the metal magnesium powder material are added; a high-ton brickpress is adopted for molding; high-temperature firing in a tunnel kiln is performed; because of the addition of the high-purity fused magnesite, the high-temperature erosion resistance of the productis greatly improved; the added superfine fused magnesite sand enables the product to have good kiln coating hanging performance, the added metal magnesium powder enables the product to have high-temperature toughness, the thermal-state anti-stripping performance and the thermal shock resistance are improved, the product has high volume density and low porosity because of high-pressure forming, and the product has good high-temperature volume stability because high-temperature forming.

Description

technical field [0001] The invention relates to the technical field of environmental protection, in particular to a preparation method of a high-corrosion-resistant magnesia-iron spinel brick. Background technique [0002] With the further strengthening of the country's environmental governance, waste disposal, especially waste incineration, has become the focus of the whole society. In addition to traditional disposal methods such as landfill and waste incineration, cement kiln co-processing of waste has become a better way. The cement kiln that uses municipal solid waste as raw material has a high incineration temperature, a long contact time between gas and materials, and strong turbulent flow of high-temperature gas in the kiln, which can completely burn the waste. The cement kiln is operated under negative pressure, the toxic and harmful gas will not overflow, and the residue of incineration waste will eventually enter the refractory brick and cement clinker, which has...

Claims

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Application Information

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IPC IPC(8): C04B35/043C04B35/622C04B35/63
CPCC04B35/043C04B35/622C04B35/6313C04B35/6316C04B2235/3272C04B2235/40C04B2235/9676
Inventor 李泉侑陈松林郑建立靳建英李炜李沅锦杜巍赵屹
Owner 郑州瑞泰耐火科技有限公司
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