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Composite anhydrous indentation sealing material for blast-furnace hot blast stove

A technology of hot blast stove and sealing material, applied in the field of refractory materials, can solve the problems of slow temperature drop of furnace skin, insignificant construction effect, high furnace bottom temperature, etc., and achieves the advantages of environmental protection, significant social benefits and good permeability. Effect

Active Publication Date: 2010-10-27
HENAN HUAXI FURNACE REFRACTORY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] 3. The part where the furnace bottom temperature is too high;
[0010] At present, when the blast furnace needs to be press-fitted and sealed, the refractory materials used are generally phosphate bonded sealant and sodium silicate bonded sealant. The obvious disadvantages of these commonly used sealants are: poor sealing effect, furnace skin The temperature drops slowly, the construction effect is not obvious, etc.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Example 1: A composite anhydrous press-in sealant for a blast furnace hot blast stove

[0041] The composite anhydrous press-in sealant for blast furnace hot blast stove of the present invention is composed of two components A and B, and the weight percentages of the two components are 70% and 30% respectively;

[0042] Expressed in weight percent, the raw materials of component A are composed of 30% high alumina powder, 30% burnt gemstone, 20% andalusite, 10% clay and 10% graphite;

[0043] The B component is thermosetting phenolic resin.

[0044] The specific requirements of each raw material in the composition of the above raw materials: the particle size of the high alumina bauxite powder is -180 mesh, A1 in the high alumina bauxite powder 2 o 3 The content of ≥80%, Fe 2 o 3 The content of bauxite is ≤2%, and the bulk density of high alumina bauxite powder is ≥2.9g / cm 3 ; The particle size of the burnt gemstone is -180 mesh, and the burnt gemstone adopts the bu...

Embodiment 2

[0045] Embodiment 2: basically the same as Embodiment 1, the difference is:

[0046] The composite anhydrous press-in sealant for blast furnace hot blast stove of the present invention is composed of two components A and B, and the weight percentages of the two components are 65% and 35% respectively;

[0047] Expressed by weight percentage, the raw material composition of component A is 40% of high alumina bauxite powder, 20% of burnt gemstone, 17% of andalusite, 15% of clay and 8% of graphite.

Embodiment 3

[0048] Embodiment 3: basically the same as Embodiment 1, the difference is:

[0049] The composite anhydrous press-in sealant for blast furnace hot blast stove of the present invention is composed of two components A and B, and the weight percentages of the two components are 68% and 32% respectively;

[0050] Expressed by weight percentage, the raw material composition of component A is 20% of high alumina bauxite powder, 40% of burnt gemstone, 20% of andalusite, 12% of clay and 8% of graphite.

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PUM

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Abstract

The invention discloses a composite anhydrous indentation sealing material for a blast-furnace hot blast stove, comprising the following components in percentage by weight: 65%-70% of a component A and 35%-30% of a component B, wherein the component A comprises the following raw materials in percentage by weight: 20%-40% of high-alumina bauxite powder, 20%-40% of flint clay, 5%-20% of andalusite, 3%-15% of clay and 1%-10% of graphite; and the component B is thermosetting phenolic resin. The composite anhydrous indentation sealing material has good sealing property and flowability, good drilling force and penetrating property in the indentation process, and the like; and in addition, after the composite anhydrous indentation sealing material is used in a blast furnace, the gas escaping amount is zero, the environment pollution is reduced, and the environmental protection and outstanding social benefits are obtained.

Description

1. Technical field: [0001] The invention relates to a refractory material, in particular to a composite anhydrous press-in sealing material for a blast furnace hot blast stove. 2. Technical background: [0002] During the long-term production process of the blast furnace, the carbon bricks around the hearth and the bottom of the furnace are gradually reduced due to high temperature erosion, mechanical impact and various erosions on the blast furnace lining. When the temperature of the thermocouple on the side wall of the hearth rises or the gas fire around the iron hole is high, it is necessary to press and grout the hearth of the hearth. The purpose is to prevent gaps between the furnace skin and refractory bricks, avoid gas leakage, and ensure good thermal conductivity so that the stave can exert its due effect. [0003] According to the production situation of the blast furnace, the parts that need to be pressed into the sealing construction are as follows: [0004] 1. ...

Claims

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Application Information

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IPC IPC(8): C04B35/66
Inventor 姜贵成姜六
Owner HENAN HUAXI FURNACE REFRACTORY
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