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A kind of interface agent for blast furnace wet spraying coating and preparation method thereof

A technology of wet spray coating and interface agent, which is applied in the field of refractory materials, can solve problems such as easy cracks, short service life, and low strength, and achieve the effects of improving compactness and strength, protecting further damage, and increasing service life

Inactive Publication Date: 2016-07-06
CHINA JINGYE ENG TECH CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] (3) The material strength of the furnace throat, furnace body and furnace waist is relatively low, and it is easy to crack and fall off after being scoured and impacted by gas and materials;
[0009] (4) The service life of the coating on the lower part of the furnace waist and the furnace bosh is relatively short, less than 6 months

Method used

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  • A kind of interface agent for blast furnace wet spraying coating and preparation method thereof
  • A kind of interface agent for blast furnace wet spraying coating and preparation method thereof
  • A kind of interface agent for blast furnace wet spraying coating and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] The proportion of each component of the interface agent used for blast furnace wet spray coating is as follows:

[0042]

[0043] Put the above-mentioned components into the mixer according to their mass parts, continuously stir and mix for 5 minutes, the rotor speed is 400 rpm, the turntable speed is 180 rpm, and a uniform interface agent 1 for blast furnace wet spray coating is prepared. .

[0044] Ordinary spray paint P without interface agent 1 and spray paint P with interface agent 1 added 1 The performance test results are shown in Table 2, where the spray paint P 1 It is obtained by adding the interface agent 1 to the ordinary spray paint P in an amount of 5% of the mass of the ordinary spray paint P and mixing.

[0045] Table 2

[0046]

[0047] As can be seen from the test results in Table 2, during the mixing and stirring process of the interface agent 1 of the present invention and the blast furnace wet spray paint, the amount of water added is small...

Embodiment 2

[0049] The proportion of each component of the interface agent used for blast furnace wet spray coating is as follows:

[0050]

[0051]

[0052]Put the above-mentioned components into the mixer according to their mass parts, continuously stir and mix for 10 minutes, the rotor speed is 400 rpm, the turntable speed is 180 rpm, and a uniform interface agent 2 for blast furnace wet spray coating is prepared. .

[0053] Ordinary spray paint P without interface agent 2 and spray paint P with interface agent 2 added 2 The performance test results are shown in Table 3, where the spray paint P 2 It is obtained by adding the interface agent 2 to the ordinary spray paint P in an amount of 10% of the mass of the ordinary spray paint P and mixing.

[0054] table 3

[0055]

Embodiment 3

[0057] The proportion of each component of the interface agent used for blast furnace wet spray coating is as follows:

[0058]

[0059] Put the above-mentioned components into the mixer according to their mass parts, continuously stir and mix for 10 minutes, the rotor speed is 450 rpm, the turntable speed is 180 rpm, and a uniform interface agent 3 for blast furnace wet spray coating is prepared. .

[0060] Ordinary spray paint P without interface agent 3 and spray paint P with interface agent 3 added 3 The performance test results are shown in Table 4, where the spray paint P 3 It is obtained by adding the interface agent 3 to the ordinary spray paint P in an amount of 8% of the mass of the ordinary spray paint P and mixing.

[0061] Table 4

[0062]

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Abstract

The invention relates to an interfacial agent for a blast furnace wet method spray coating and a preparation method of the interfacial agent. The interfacial agent is prepared from the following components in parts by weight: 5-10 parts of silicon metal powder, 5-10 parts of boron nitride powder, 30-50 parts of titanium oxide powder, 5-20 parts of micro silicon powder, 5-20 parts of alpha-Al2O3 micropowder, 5-20 parts of aluminate cement and 5-10 parts of polyphosphate. With the adoption of the interfacial agent, in the mixing process of the interfacial agent and the blast furnace wet method spray coating, the water addition amount is small, the wetting time is short, the mixing uniformity is high, the prepared spray coating is high in density and good in compressive strength; and after a lining of a blast furnace is formed by spraying by adopting a wet method spraying technology, the using period is long.

Description

technical field [0001] The invention belongs to the field of refractory materials, and relates to an interface agent for blast furnace wet spray coating and a preparation method thereof. Background technique [0002] The blast furnace is the main equipment for continuous high-temperature operation of ironmaking. Due to long-term impact, erosion, and melting loss, the inner lining of the blast furnace will fall off locally or in a large area, resulting in a large change in the furnace type of the blast furnace operation, resulting in repeated abnormalities in the furnace condition. shortened furnace life. At present, the spraying and repairing of the blast furnace lining at home and abroad usually adopts the wet spraying technology combining wet conveying and remote spraying. Less, fast production, low rebound rate, dense sprayed layer structure, long service life, less environmental pollution and so on. [0003] Al 2 o 3 -SiC-SiO 2 System-based, especially the lining of...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/66
Inventor 唐勋海刘兴平李洪会范咏莲郑期波李晓伟徐自伟郑江邱海龙徐焱慧
Owner CHINA JINGYE ENG TECH CO LTD