Nano coating material used for permanent layer of torpedo ladle and preparation method thereof

A smear and permanent layer technology, applied in the field of refractory materials for thermal equipment in the iron and steel industry, can solve the problems of large temperature drop of molten iron and high thermal conductivity of torpedo tanks, and achieve the effects of reducing the temperature drop of molten iron, easy implementation and burden reduction.

Inactive Publication Date: 2020-03-10
SHANGHAI MEISHAN IRON & STEEL CO LTD
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  • Summary
  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a nanometer smear material for the permanent layer of torpedo tanks and its preparation method, which mainly solves the technical problems of high thermal conductivity of existing torpedo tanks and large temperature drop of molten iron during transportation

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0029] The present invention will be further described below in conjunction with Examples 1-5, as shown in Table 1.

[0030] A nanometer smear for the permanent layer of a torpedo tank, the weight percentage of its raw material components is: 55%-65% of lightweight alumina, 2%-4% of microbeads, 13%-24% of pure calcium aluminate cement, 4-5% of bitter earth, 6%-14% of nano-alumina, the sum of the weight percentages of the raw material components is 100%.

[0031] Table 1 Raw material components of the nano-smear of the present invention, unit: weight percent.

[0032] Raw material components Lightweight Bauxite microbeads Pure calcium aluminate cement Diamond Bitter Soil Nano Al2O3 this invention 55～65 2～4 13～24 4～5 6～14 Example 1 55 2 24 5 14 Example 2 60 3 23 4 10 Example 3 61 4 21 5 9 Example 4 63 4 22 5 6 Example 5 65 3 13 5 14

[0033]The permanent layer of the torpedo tank is made by using...

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PUM

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Abstract

The invention discloses a nano coating material used for a permanent layer of a torpedo ladle and a preparation method thereof and mainly solves the technical problems that a torpedo ladle in the prior art is high in heat conductivity coefficient and is large in temperature reduction of molten iron during transportation of the molten iron. The nano coating material is composed of, by weight, 55-65% of light-weight alumina, 2-4% of microbeads, 13-24% of pure calcium aluminate cement, 4-5% of magnesia, and 6-14% of nano Al2O3, all the components adding to 100% by weight in total. The permanent layer of the torpedo ladle, prepared from the nano coating material, has the heat conductivity coefficient of 0.024-0.032 W/(m*K) at 600 DEG C.

Description

technical field [0001] The invention relates to a refractory material for a torpedo tank, in particular to a nanometer smear material for a permanent layer of a torpedo tank and a preparation method thereof, belonging to the technical field of refractory materials for thermal equipment in the iron and steel industry. Background technique [0002] The torpedo tank is a large-scale molten iron transportation equipment, which is used to store and transport molten iron to coordinate the temporary unbalanced state of molten iron and molten steel in ironmaking production and steelmaking production. There are high requirements on the refractoriness, compressive strength and corrosion resistance of torpedo tank refractories. The working layer of the torpedo tank is usually made of silicon carbide bricks, and the permanent layer of the torpedo tank is usually made of clay bricks. The thermal conductivity of the clay brick is 0.732W / (m K), which is relatively high; the torpedo tank T...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/66C04B35/622
CPCC04B35/62222C04B35/66C04B2235/3206C04B2235/3217C04B2235/3222
Inventor 洪建国李俊杰
Owner SHANGHAI MEISHAN IRON & STEEL CO LTD
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