Ladle permanent lining pouring material capable of rapid roasting

A castable and permanent layer technology is applied in the field of unshaped refractory materials, which can solve the problems of easy dropping of bricks when dismantling the working layer of the ladle, difficulty in turnover of the ladle, and low service life, and achieve long service life, high strength and refractoriness. long effect

Active Publication Date: 2013-01-23
BAOSHAN IRON & STEEL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Clay bricks and wax stone bricks both have the problems of low strength and low refractoriness. When removing the working layer of the ladle, the bricks are easy to fall off and the service life is low.
Existing new ladles that use high-alumina castables as permanent layers need to be baked fo

Method used

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  • Ladle permanent lining pouring material capable of rapid roasting
  • Ladle permanent lining pouring material capable of rapid roasting
  • Ladle permanent lining pouring material capable of rapid roasting

Examples

Experimental program
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Example Embodiment

[0026] Example 1-6

[0027] According to the content of the components described in Table 1, each raw material is weighed in sequence, and after forced mixing, the castable for the permanent layer of the ladle of the present invention can be prepared.

[0028] The various components involved in the present invention are all commonly used raw materials and can be easily purchased in the chemical raw material market.

[0029] Table 1: The content of each component in the castable used in the ladle (unit: kg)

[0030]

[0031] Alpha alumina powder

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Abstract

The invention provides a ladle permanent lining pouring material capable of rapid roasting. The pouring material mainly comprises 45-75 parts of high bauxite, 10-20 parts of high-alumina hollow spheres, 3-5 parts of cyanite powder, 3-5 parts of alumina micro powder, 5-7 parts of silica micro powder, 3-5 parts of pure calcium aluminate cement, 0.5-1.5 parts of basic aluminium lactate powder, 0.02-0.06 part of metal aluminium powder, 0.1-0.3 part of organic fibres, and 0.1-0.3 part of water reducer. The pouring material capable of rapid roasting, provided by the invention, has the characteristics of being high in strength and refractoriness, good in thermal shock resistance, low in volume density and thermal conductivity, and considerable long in service life.

Description

technical field [0001] The invention relates to an unshaped refractory material, in particular to a casting material for a permanent layer of a ladle used for rapid baking. Background technique [0002] Existing refractory materials used for lining the permanent layer of ladles mainly include clay bricks, wax stone bricks and high-alumina castables, for example: castables with bauxite as the main raw material or bauxite-based sintered mullite as the main raw material. [0003] The Chinese invention patent CN01132037.0 published on May 7, 2003 discloses a castable for permanent lining of tundish, its component weight percent is: bauxite-grade mullite 30-75%, mullite 3-75% 67%, silica powder 1.5-5%, cement 3%, steel fiber 0.1-3%. [0004] The Chinese invention patent CN200710039530.7 published on October 31, 2007 discloses a low-density, high-temperature-resistant and high-aluminum lightweight castable, which is characterized in that: lightweight mullite aggregate 26-55%, flo...

Claims

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Application Information

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IPC IPC(8): C04B35/66
Inventor 金从进李泽亚方善华陈卫荣何平显俞平
Owner BAOSHAN IRON & STEEL CO LTD
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