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Slag-corrosion-resistant high-strength furnace-melting brick for gasification melting furnace and preparation method of furnace-melting brick

A gasification melting, high-strength technology, applied in the field of refractory materials, can solve the problems affecting the use effect and life, the performance of furnace melting bricks, etc., to improve the crystal stability and wear resistance, improve the resistance to slag corrosion The effect of promoting the uniformity of dispersion

Pending Publication Date: 2021-10-26
宜兴市海科窑炉工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Under ultra-high temperature conditions, all inorganic components are completely melted, and they are accumulated at the bottom of the reactor and discharged in a liquid state. Due to the high-temperature gas generated inside the pyrolysis gasification melting furnace, it will cause thermal corrosion to the fireplace pipe, resulting in constant performance of the furnace frit bricks. Decrease, which in turn affects the use effect and life

Method used

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  • Slag-corrosion-resistant high-strength furnace-melting brick for gasification melting furnace and preparation method of furnace-melting brick
  • Slag-corrosion-resistant high-strength furnace-melting brick for gasification melting furnace and preparation method of furnace-melting brick
  • Slag-corrosion-resistant high-strength furnace-melting brick for gasification melting furnace and preparation method of furnace-melting brick

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Example 1: A high-strength furnace fused brick for gasification and melting furnaces resistant to slag erosion. Its components include the following raw materials in parts by weight: 15 parts of skeleton, 30 parts of matrix, 1 part of external auxiliary agent and 6 parts of purified water;

[0036] The skeleton includes: 2 parts of coke gemstone, 3 parts of congealed stone, 2 parts of andalusite, 3 parts of magnesium-rich spinel, 3 parts of siliceous shale, and 2 parts of gibbsite;

[0037] The matrix includes: 15 parts of washed kaolin, α-Al 2 o3 2 parts of fine powder, 4 parts of zinc oxide, 4 parts of nano-carbon black, 3 parts of titanium dioxide, 2 parts of yttrium oxalate;

[0038] Added additives include: 0.2 parts of sintering aid, 0.2 parts of composite water reducer, and 0.6 parts of binder;

[0039] Among them: the sintering aid is CuMn30;

[0040] The composite water reducer is a mixture of polycarboxylic acid, sodium tripolyphosphate and sodium hexametaph...

Embodiment 2

[0052] Example 2: A high-strength furnace fused brick for a gasification melting furnace resistant to slag erosion, its composition includes the following raw materials in parts by weight: 30 parts of skeleton, 65 parts of matrix, 3 parts of external additives and 10 parts of purified water;

[0053] The skeleton includes: 4 parts of coke gemstone, 5 parts of congealed stone, 5 parts of andalusite, 5 parts of magnesium-rich spinel, 7 parts of siliceous shale, and 4 parts of gibbsite;

[0054] The matrix includes: 27 parts of washed kaolin, α-Al 2 o 3 4 parts of fine powder, 9 parts of zinc oxide, 7 parts of nano-carbon black, 11 parts of titanium dioxide, 7 parts of yttrium oxalate;

[0055] Added additives include: 0.8 parts of sintering aid, 0.7 parts of composite water reducer, and 1.5 parts of binder;

[0056] Among them: the sintering aid is CuMn30;

[0057] The composite water reducer is a mixture of polycarboxylic acid, sodium tripolyphosphate and sodium hexametaphos...

Embodiment 3

[0069] Example 3: A high-strength furnace fused brick for gasification and melting furnaces resistant to slag erosion, its composition includes the following raw materials in parts by weight: 23 parts of skeleton, 50 parts of matrix, 2 parts of external additives and 8 parts of purified water;

[0070] The skeleton includes: 3 parts of coke gemstone, 4 parts of congealed stone, 3 parts of andalusite, 4 parts of magnesium-rich spinel, 6 parts of siliceous shale, and 3 parts of gibbsite;

[0071] The matrix includes: 22 parts of washed kaolin, α-Al 2 o 3 3 parts of fine powder, 6 parts of zinc oxide, 6 parts of nano-carbon black, 7 parts of titanium dioxide, 6 parts of yttrium oxalate;

[0072] Added additives include: 0.5 part of sintering aid, 0.5 part of composite water reducer, 1.0 part of binder;

[0073] Among them: the sintering aid is CuMn30;

[0074] The composite water reducer is a mixture of polycarboxylic acid, sodium tripolyphosphate and sodium hexametaphosphate ...

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Abstract

The invention discloses a slag-corrosion-resistant high-strength furnace-melting brick for a gasification melting furnace and a preparation method of the furnace-melting brick. The furnace-melting brick is composed of flint clay, coagulated stone, andalusite, magnesium-rich spinel, siliceous shale, gibbsite, water-washed kaolin, alpha-Al2O3 micro powder, zinc oxide, nano carbon black, titanium dioxide, yttrium oxalate, a sintering aid, a composite water reducing agent, a binding agent and purified water. The preparation method comprises the steps: pretreatment: crushing and mixing the raw materials respectively; pressing and forming: putting the pretreated material into a brick making machine mold, pressing into a wet blank, and curing; and roasting: roasting the wet blank in a tunnel roasting kiln to obtain a finished product of the high-strength furnace-melting brick. The process is reasonable in design, and the high-strength furnace-melting brick prepared through the method has high slag corrosion resistance and structural strength and is suitable for large-scale popularization.

Description

technical field [0001] The invention relates to the technical field of refractory materials, in particular to a slag-resistant high-strength furnace fused brick for a gasification melting furnace and a preparation method thereof. Background technique [0002] The pyrolysis gasification melting furnace is a fixed bed vertical reaction furnace under normal pressure. It works according to the principle of moving bed. The inside of the gasification melting furnace is divided into drying, oxidative decomposition, and reduction melting stages in layers from top to bottom. . Solid waste is fed from the upper part of the furnace and descends while exchanging heat with the gas rising from the lower part of the furnace. Synthetic gas discharged from the upper part of the gasification melting furnace exits the device. Solid waste from the pyrolysis section descends into the reduction melting section together with coke and limestone, and undergoes a controllable melting reduction reac...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/66C04B33/04C04B33/13C04B41/85
CPCC04B35/66C04B33/04C04B33/1305C04B33/131C04B41/5012C04B41/85C04B41/5009C04B33/32C04B2235/3222C04B2235/3217C04B2235/3284C04B2235/424C04B2235/449C04B2235/3232C04B2235/3262C04B2235/3268C04B2235/3281C04B2235/9669C04B41/4535C04B41/5001C04B41/478C04B41/46
Inventor 汤闻平陶平汤勤娟
Owner 宜兴市海科窑炉工程有限公司
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