Furnace lining gap repairing material and furnace lining gap repairing method

A technology for repairing materials and gaps. It is applied in the direction of lining repair, furnace, furnace components, etc. It can solve problems such as lack of elasticity, aggravate furnace lining damage, and furnace lining cracks, so as to maintain long-term stability and avoid secondary damage.

Pending Publication Date: 2020-04-21
LUYANG ENERGY SAVING MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, due to the high operating temperature and harsh atmosphere of the high-temperature furnace, it is easy to cause irregular cracks in the furnace lining.
Regardless of whether it is an expansion joint or a damaged crack, if it is not repaired, it will affect the temperature in the furnace, and at the same time, the temperature of the outer wall of the furnace corresponding to the gap in the furnace lining will be too high, which will affect the service life of the high-temperature furnace
[0003] At present, there are two main repair schemes for furnace lining gaps

Method used

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  • Furnace lining gap repairing material and furnace lining gap repairing method
  • Furnace lining gap repairing material and furnace lining gap repairing method
  • Furnace lining gap repairing material and furnace lining gap repairing method

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0042] Example 1

[0043] 1) Composition design:

[0044]

[0045] 2) Preparation of repair materials:

[0046] According to the composition design in 1), the components are mixed uniformly to obtain the furnace lining gap repair material; the wet bulk density of the furnace lining gap repair material is 1250kg / m 3 , The bulk density after drying at room temperature (25℃) is 600kg / m 3 , Compressive strength 0.5MPa, heating wire shrinkage 0.1%, viscosity 100000MPa.S (25°C).

Example Embodiment

[0047] Example 2

[0048] 1) Composition design:

[0049]

[0050] 2) Preparation of repair materials:

[0051] According to the composition design in 1), the components are mixed uniformly to obtain the furnace lining gap repair material; the wet bulk density of the furnace lining gap repair material is 1200kg / m 3 ,The bulk density after drying at room temperature (25℃) is 580kg / m 3 , Compressive strength of 0.4MPa, heating line shrinkage of 0.1%, viscosity of 100000MPa.S (25°C).

Example Embodiment

[0052] Example 3

[0053] 1) Composition design:

[0054]

[0055] 2) Preparation of repair materials:

[0056] According to the composition design in 1), the components are mixed uniformly to obtain the furnace lining gap repair material; the wet bulk density of the furnace lining gap repair material is 1150kg / m 3 , The bulk density after drying at room temperature (25℃) is 540kg / m 3 , Compressive strength 0.3MPa, heating wire shrinkage 0.2%, viscosity 100000MPa.S (25°C).

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Abstract

The invention belongs to the field of furnace lining repairing, and particularly relates to a furnace lining gap repairing material and a furnace lining gap repairing method. The furnace lining gap repairing material provided by the invention comprises the following components: 25 to 40 wt% of inorganic fibers, 2 to 10 wt% of an expansion filler, 2 to 15 wt% of refractory powder, 10 to 20 wt% of abinding agent and 30 to 60 wt% of a solvent, wherein the inorganic fibers comprise one or more selected from the group consisting of glass fibers, rock wool fibers, aluminum silicate fibers, magnesium silicate fibers, calcium silicate fibers, zirconium-containing fibers and aluminum oxide fibers; and the expansion filler comprises one or more selected from the group consisting of expanded perlitepowder, expanded vermiculite powder, expanded kyanite powder and sillimanite powder. The composition of the furnace lining gap repairing material is optimally designed, and particularly, proper typesof the inorganic fibers and the expansion filler with proper usage amounts are matched and selected, so the repairing material has a very excellent furnace lining gap repairing effect, and effectively prolongs the service life of a furnace lining.

Description

technical field [0001] The invention belongs to the field of furnace lining repair, and in particular relates to a furnace lining gap repair material and a furnace lining gap repair method. Background technique [0002] Due to the high working temperature of the high-temperature furnace, an expansion joint of a certain width will be reserved on the furnace lining as a margin for thermal expansion and contraction of the lining material. In addition, due to the high operating temperature and harsh atmosphere of the high-temperature furnace, it is easy to cause irregular cracks in the furnace lining. Whether it is an expansion joint or a damaged crack, if it is not repaired, it will affect the temperature in the furnace, and at the same time, the temperature of the outer wall area corresponding to the lining gap will be too high, which will affect the service life of the high-temperature furnace. [0003] At present, there are two main repair schemes for furnace lining gaps: o...

Claims

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Application Information

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IPC IPC(8): C04B35/66F27D1/16
CPCC04B35/66F27D1/16C04B2235/5216C04B2235/5232C04B2235/5224C04B2235/524C04B2235/349C04B2235/3463C04B2235/3217C04B2235/3248C04B2235/3427C04B2235/447C04B2235/48C04B2235/3418F27D2001/1605
Inventor 许妹华任德利柳西河李桂娟
Owner LUYANG ENERGY SAVING MATERIALS CO LTD
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