Ladle castable

A castable and ladle technology, applied in the field of ladle castables, can solve problems such as poor slag resistance and easy oxidation, and achieve the effects of reducing slag sticking, improving utilization, and reducing slag cleaning time

Inactive Publication Date: 2010-01-06
SHANGHAI MEISHAN IRON & STEEL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Aiming at this, the present invention has developed a special casting material for ladle working lining with good spalling resistance, corrosion resistance, erosion resistance and good slag resistance. The use of this material can greatly reduce the slag sticking condition of the ladle. There is ladle castable but its material is Al 2 o 3 - SiC-C-based castables

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0008] Ladle castables are coke gem clinker, sintered mullite, zircon, super high alumina bauxite clinker powder, coke gem clinker powder, amorphous silica micropowder, α-Al 2 o 3 Composed of calcium aluminate cement and steel fiber, its weight percentage composition is: 60-68% of coke gemstone clinker, 5-10% of sintered mullite, 4-8% of zircon, super-grade high-alumina bauxite clinker powder 3 ~5%, coke gemstone clinker powder 4~12%, amorphous silica powder 4~8%, α-Al 2 o 3 Calcium aluminate cement 8-10%, steel fiber 2-8%.

[0009] The implementation example of this ladle castable is shown in Table 1.

[0010] Table 1: Example table of ladle castable ratio

[0011] Burnt Gems

clinker

Sintered Mo

come stone

Zircon

stone

Special grade high alumina alum

Soil clinker powder

Burnt Gems

clinker powder

Amorphous oxidation

Silica powder

calcium aluminate

cement

steel fiber

dimension

th...

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PUM

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Abstract

The invention relates to ladle castable. The use of the castable can reduce the slag adhesion of ladles, improve the yield of hot metal and operation efficiency, and can reduce the maintenance cost for the ladles. The ladle castable comprises the chemical components in percentage by weight: 45 to 60 percent of Al2O3, 30 to 40 percent of SiO2, 5 to 15 percent of ZrO2, less than 1 percent of CaO, and 2 to 5 percent of SiC. The ladle castable is used for integral casting of the ladles.

Description

Technical field: [0001] The invention relates to an amorphous casting material, in particular to a ladle casting material used for integral casting on the working lining of a ladle. Background technique: [0002] The use of ladles is an important link in the entire production line of a steel company. Whether it is safe and efficient is directly related to whether the production runs smoothly. The refractory materials used in ladles in normal steel mills are mainly shaped refractory materials such as clay bricks and high alumina bricks. Brick lining materials often have brick cracks and steps, which easily cause molten iron slag to fall, which in turn leads to sticky slag, especially at the mouth of the molten iron ladle. Obviously, the harm is that the center of gravity of the ladle will be unstable, desulphurization and slag removal will not be possible, and even the iron cannot be completely added to the converter, and the slag must be removed offline, resulting in a decre...

Claims

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Application Information

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IPC IPC(8): C04B35/66
Inventor 洪建国管灿
Owner SHANGHAI MEISHAN IRON & STEEL CO LTD
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