Slag ladle lining heat insulation coating system and construction technology

A technology of thermal insulation coating and construction technology, applied in the field of metallurgical materials, can solve the problems of reduced anti-stick performance, unmentioned service life, reduced effective components of spray paint, etc., to achieve the effect of isolating erosion and improving service life

Active Publication Date: 2022-03-11
BEIJING NEW VISION BUILDING CONSTR TECH +1
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  • Abstract
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Problems solved by technology

[0003] Chinese application CN109369142A discloses a steel slag tank anti-sticking spray coating and its preparation method. It specifically discloses a spray coating with dolomite, clay and bentonite as the main materials. Dolomite can loosen the structure of the reaction zone under high temperature conditions. After decomposing or falling off, the risk of sticking cans can be reduced, but as the number of uses increases, the effective components of the spray coating will inevitably decrease, and its anti-sticking performance will be greatly reduced
Chinese application CN107827470A discloses a high-performance slag tank spray coating and its preparation method, specifically discloses a spray coating with cleaning waste, silicon powder and clay as the main materials. The use of waste can reduce material costs to a certain extent, but its use Lifespan is not mentioned

Method used

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  • Slag ladle lining heat insulation coating system and construction technology
  • Slag ladle lining heat insulation coating system and construction technology
  • Slag ladle lining heat insulation coating system and construction technology

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] (1) Modeling material layer: 33 parts of P·O 42.5R ordinary Portland cement, 1.92 parts of bentonite, 1 part of silica fume, 64 parts of 40-140 mesh quartz sand, 0.03 parts of polycarboxylate superplasticizer, polyether 0.01 part of antifoaming agent, 0.02 part of hydroxyethyl cellulose ether, and 0.02 part of saponin air-entraining agent. Mix the above materials evenly, add 17 parts of water in total, mix evenly in a blender, and then apply it directly to the innermost layer of the slag tank lining.

[0052](2) Wear-resistant material layer: 14 parts of CA50-Ⅲ aluminate cement, 28 parts of ordinary Portland cement with P·O 52.5, 2 parts of slag powder, 2.87 parts of micro silica fume, the continuous distribution range of particle size is 0.1-2mm 33 parts of quartz sand, 20 parts of coke gemstone with a continuous particle size distribution range of 0.1-2 mm, 0.05 part of naphthalene superplasticizer, 0.03 part of silicone defoamer, 0.03 part of saponin air-entraining a...

Embodiment 2

[0056] (1) Modeling material layer: 29 parts of P·Ⅱ42.5R Portland cement, 2 parts of bentonite, 1.96 parts of nano-silica, 67 parts of 40-140 mesh quartz sand, 0.02 parts of polycarboxylate superplasticizer, saponins Air-entraining agent 0.02 parts. Mix the above materials evenly, add 15 parts of water in total, mix evenly in a blender, and then apply it directly to the innermost layer of the slag tank lining.

[0057] (2) Wear-resistant material layer: 15 parts of CA50-Ⅲ aluminate cement, 26 parts of P·Ⅱ52.5 ordinary Portland cement, 2.91 parts of slag powder, 2 parts of micro silica fume, 2 parts of nano silicon dioxide, granular 26 parts of quartz sand with a continuous diameter distribution range of 0.1-2 mm, 26 parts of coke gemstones with a continuous particle size distribution range of 0.1-2 mm, 0.06 part of naphthalene-based superplasticizer, and 0.03 part of hydroxyethyl cellulose ether. After mixing the above materials evenly, add 14 parts of water with a total mass...

Embodiment 3

[0061] (1) Modeling material layer: 30 parts of P·O 42.5R ordinary Portland cement, 1 part of bentonite, 1.94 parts of microsilica, 1 part of nano-silica, 66 parts of 40-140 mesh quartz sand, polycarboxylate 0.03 part of water agent, 0.02 part of hydroxyethyl cellulose ether, and 0.01 part of saponin air-entraining agent. After mixing the above materials evenly, add 18 parts of water with a total mass, mix evenly in a mixer, and then apply it directly to the innermost layer of the slag tank lining.

[0062] (2) Wear-resistant material layer: 10 parts of CA50-Ⅲ aluminate cement, 32 parts of P·Ⅱ52.5 ordinary Portland cement, 2.92 parts of micro silica fume, 3 parts of nano silicon dioxide, the continuous distribution range of particle size is 24 parts of quartz sand with a particle size of 0.1-2 mm, 28 parts of coke gemstones with a continuous particle size distribution range of 0.1-2 mm, 0.05 parts of naphthalene-based superplasticizer, 0.01 part of saponin air-entraining agent...

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Abstract

The invention discloses a slag ladle lining heat-insulation coating system and a construction process, the heat-insulation coating system structurally comprises a modeling material layer, a wear-resistant material layer and a heat-resistant coating layer, the modeling material layer is directly coated on a slag ladle lining to serve as a bottom layer of the coating system; the wear-resistant material layer is coated on the modeling material layer to serve as a middle layer of the coating system; the heat-resistant coating layer is coated on the wear-resistant material layer and is used as a surface layer of the coating system. High-quality raw materials are adopted, the proportion is optimized, meanwhile, through material structure design, the heat-resistant coating layer, the wear-resistant material layer and the modeling material layer adopt material systems with different temperature bearing properties according to different positions of the heat-resistant coating layer, the wear-resistant material layer and the modeling material layer, and a gradient heat-conducting material system is formed; a slag ladle lining heat insulation coating system with hierarchical optimization heat insulation, high strength, high corrosion resistance and ultra-long service life is formed, the one-time ladle overturning rate can be increased to 99% or above, and the service life of the slag ladle lining heat insulation coating system is almost the same as that of a slag ladle body.

Description

technical field [0001] The invention belongs to the technical application field of metallurgical materials, and relates to a slag tank inner lining thermal insulation coating system and a construction process, which are suitable for preparation and construction of slag tank inner liner materials. Background technique [0002] The slag tank is mainly used in the non-ferrous and ferrous metal smelting industry to hold high-temperature molten liquids such as copper slag and steel slag produced in the smelting process. These molten liquids usually have the characteristics of high temperature, high viscosity, strong corrosion, etc., which are easy to cause damage to the casting slag tank body, and there is a risk of melting through the slag tank or melting and sticking the tank. Modern slag tanks are usually sprayed after casting Insulation layer materials to reduce or prevent the occurrence of the above risks. [0003] Chinese application CN109369142A discloses a steel slag tan...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/66
CPCC04B35/66C04B2235/3481C04B2235/349C04B2235/3418C04B2235/428C04B2235/404C04B2235/3826C04B2235/447C04B2235/9607C04B2235/9669
Inventor 宋涛文韩宇栋高栋单云沛李建霆徐涛薛乃彦文峰年江山徐自伟
Owner BEIJING NEW VISION BUILDING CONSTR TECH
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