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Coating liquid, composition for coating liquid, and refractory material having coating layer

A technology of refractory materials and coating liquid, which is applied in the field of refractory materials, can solve problems such as peeling and low operability, and achieve the effects of suppressing cracks, simplifying preparation operations, and excellent preservation

Active Publication Date: 2021-07-27
INUI CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, there is a problem that the workability at the time of coating the refractory mortar is low
In addition, it is difficult to set the coating thickness thinner with refractory mortar, so there is a problem that the refractory material coated with refractory mortar tends to peel off from the outer wall of the heating furnace due to its own weight.

Method used

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  • Coating liquid, composition for coating liquid, and refractory material having coating layer
  • Coating liquid, composition for coating liquid, and refractory material having coating layer
  • Coating liquid, composition for coating liquid, and refractory material having coating layer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0097] Hereinafter, examples of the above-mentioned coating liquid will be described. Also, in this example, the following materials were used to prepare coating liquids.

[0098] ・Inorganic binder derived from colloidal silica particles

[0099] · Swellable clay mineral montmorillonite

[0100] ·Ceramic fiber A Al 2 o 3 Content: 65% by mass, SiO 2 Content: 35% by mass, average diameter of fibrous particles: 6 μm, average fiber length: 10 μm

[0101] ·Ceramic fiber B Al 2 o 3 Content: 65% by mass, SiO 2 Content: 35% by mass, average diameter of fibrous particles: 6 μm, average fiber length: 20 μm

[0102] ·Ceramic Fiber C Al 2 o 3 Content: 65% by mass, SiO 2 Content: 35% by mass, average diameter of fibrous particles: 6 μm, average fiber length: 40 μm

[0103] ·Ceramic Fiber D Al 2 o 3 Content: 65% by mass, SiO 2 Content: 35% by mass, average diameter of fibrous particles: 6 μm, average fiber length: 60 μm

[0104] ·Ceramic Fiber E Al 2 o 3 Content: 65% by ma...

experiment example 1

[0121] This example is an example of a coating liquid containing a ceramic fiber as a radiation scattering material. In this example, as shown in Table 1, 14 types of coating liquids (test agents 1-14) were prepared by changing the type and content of ceramic fibers. After that, the properties of the obtained coating liquid were evaluated.

[0122]

[0123] First, the swellable clay mineral is added several times while stirring the water to disperse the swellable clay mineral in water. While stirring the solution, an inorganic binder, a radiation scattering material, a colorant, a preservative, and a thickener were sequentially added to prepare Test Agents 1-14. In addition, the inorganic binder is mixed in the above-mentioned solution in the state of a colloidal silica solution.

[0124]

[0125] ·Viscosity

[0126] The viscosity of each test agent in 20 degreeC was measured using the viscometer ("Viscotester VT-04E" by RION Corporation). The results are shown in Tabl...

experiment example 2

[0181] This example is an example of a coating solution in which the contents of the inorganic binder and the swelling clay mineral were changed. As shown in Table 2, in this example, eight types of coating liquids (test agents 15-22) in which the contents of the inorganic binder and the swelling clay mineral were changed were prepared in the same manner as in Experimental Example 1. Then, various characteristics were evaluated by the same method as in Experimental Example 1. The results are shown in Table 2.

[0182] Table 2

[0183]

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Abstract

To provide a coating liquid for refractories that can be prepared by simple operations and has excellent performance, a composition for preparing the coating liquid, and a coating layer including excellent heat insulating performance and wind speed resistance refractory materials. The coating solution contains: 100 parts by mass of water, 10-20 parts by mass of inorganic binder, 0.2-2 parts by mass of swellable clay mineral, and 10-200 parts by mass of radiation scattering material. The radiation scattering material contains ceramic fibers and / or ceramic powders, the ceramic fibers are composed of Al 2 o 3 Composed of fibrous particles with an average fiber length of 100 μm or less, the ceramic powder is selected from alumina powder, silica powder, titanium dioxide powder, chromium oxide powder, yttrium oxide powder, zirconia powder, lanthanum oxide powder, One or more ceramic powders of a group consisting of cerium powder, silicon carbide powder, silicon carbide powder, silicon nitride powder, and boron nitride powder, having a median diameter of 60 μm or less.

Description

technical field [0001] The present invention relates to a coating liquid for coating on a refractory material, a composition for preparing the coating liquid, and a refractory material having a coating layer prepared using the coating liquid. Background technique [0002] Soaking furnaces used in the production of steel materials, heat treatment furnaces, firing furnaces used in the production of ceramics, etc. are configured such that the heating furnace capable of heating at high temperature has an outer wall and an inner wall arranged inside the outer wall. The inner wall is made of refractory material. [0003] The refractory material constituting the inner wall is usually attached to the outer wall of the heating furnace via attachment fittings. As such a refractory material, a block made of ceramic fibers containing silica, alumina, zirconia, etc. is often used. Since this block has excellent thermal insulation performance, it can easily control the temperature and t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B41/87C04B35/66C04B41/85C09D5/00C09D7/61C09D201/00
CPCC04B35/66C04B41/85C04B41/87C09D5/00C09D201/00C09D7/40C04B41/4596C04B41/5031C04B41/5037C09D1/00C09D7/61C09D7/70
Inventor 大野大辅永绳勇人福原徹
Owner INUI CO LTD