Hot-blast furnace pipe packing material and preparation method therefor

A technology of pipe sealing and hot blast furnace, which is applied in the field of metallurgical refractory materials to achieve the effects of improving high temperature performance, improving medium and high temperature sintering strength and wear resistance, and improving normal temperature strength

Active Publication Date: 2018-02-16
CHINA JINGYE ENG +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The ideal sealing material should have fluidity that can be maintained at room temperature for a certain period of time, which is convenient for construction to be fully pressed into the gap and to deal with emergencies; it can be cured in a short...

Method used

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  • Hot-blast furnace pipe packing material and preparation method therefor
  • Hot-blast furnace pipe packing material and preparation method therefor
  • Hot-blast furnace pipe packing material and preparation method therefor

Examples

Experimental program
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Effect test

Embodiment 1

[0048] The hot blast stove pipe sealing material of the present embodiment comprises, in parts by weight: 100 parts by weight of dry material and 15 parts by weight of silica sol binder; wherein,

[0049] 100 parts by weight dry material contains:

[0050]

[0051]

[0052] Among them, in the metal-nonmetal composite powder, the content of single crystal silicon and silicon dioxide is 34.47wt%, the content of silicon carbide is 62.58%, and the rest are impurities;

[0053] Activated alumina micropowder, commercially available, refractory raw material, the particle size distribution is mainly concentrated in 0.5-2μm;

[0054] Calcined alumina powder, commercially available, refractory raw material, the particle size distribution is mainly concentrated in the range of 2-5 μm;

[0055] Clay powder, commercially available, refractory raw material, the particle size distribution is mainly concentrated in 15-45μm;

[0056] The curing agent is magnesium oxide, the particle si...

Embodiment 2

[0061] The hot blast stove pipe sealing material of the present embodiment comprises, in parts by weight: 100 parts by weight of dry material and 18 parts by weight of silica sol binder; wherein,

[0062] 100 parts by weight dry material contains:

[0063]

[0064]

[0065] Among them, in the metal-nonmetal composite powder, the content of single crystal silicon and silicon dioxide is 34.47wt%, the content of silicon carbide is 62.58%, and the rest are impurities;

[0066] Activated alumina micropowder, commercially available, refractory raw material, the particle size distribution is mainly concentrated in 0.5-2μm;

[0067] Calcined alumina powder, commercially available, refractory raw material, the particle size distribution is mainly concentrated in the range of 2-5 μm;

[0068] Clay powder, commercially available, refractory raw material, the particle size distribution is mainly concentrated in 15-45μm;

[0069] The curing agent is magnesium oxide, the particle si...

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Abstract

The invention discloses a hot-blast furnace pipe packing material and a preparation method therefor. The packing material is prepared from the ingredients in parts by weight: 100 parts of dry mattersand 10-25 parts of silica sol, wherein the 100 parts of dry matters comprise high bauxite, flint clay or mullite particles, silicon carbide particles, high bauxite or corundum powder, metal-nonmetal composite powder, activated alumina micropowder, calcined alumina micropowder, clay micropowder, carboxymethyl cellulose or hydroxymethyl cellulose and a curing agent. The packing material disclosed bythe invention is pollution-free to environments, is good in fluidity in construction time, is not prone to settlement, can be thoroughly packed into small slits during pressed-in repair, can be constructed at high temperatures and can also be cured at normal temperatures; the packing material can be tightly bonded to a material of a pressed-in area; the packing material has good strength propertyat all temperatures; the packing material has low linear shrinkage in service temperature intervals and has good thermal shock stability; and industrial wastes of other industries are utilized, so that the utilization ratio of resources is increased.

Description

technical field [0001] The invention belongs to the technical field of metallurgical refractory materials, and relates to a hot blast stove pipe sealing material and a preparation method thereof, more specifically, to a room temperature curable cermet-bonded hot blast stove pipe sealing material and a preparation method thereof. Background technique [0002] The hot blast stove is one of the key equipment for blast furnace ironmaking. At the present stage, as the country vigorously develops the circular economy, promotes energy conservation and emission reduction, coupled with the progress and strengthening of blast furnace smelting technology, it is an inevitable trend to reduce the coke ratio and increase the utilization factor. With the development of high pressure and large air volume, the development of blast furnaces has put forward higher requirements for high blast temperature and long life of hot blast furnaces. The working conditions of the hot blast stove are com...

Claims

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Application Information

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IPC IPC(8): C04B35/66C21B9/10
CPCC04B35/66C21B9/10Y02P10/20
Inventor 张雯文高栋白利红江山薛乃彦张正富唐勋海张君博
Owner CHINA JINGYE ENG
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