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Continuous casting flow control refractory material and its application

A refractory material and continuous casting technology, applied in the field of refractory materials, can solve the problems of poor erosion resistance, increase the production cost of steel mills, and expensive functional parts, so as to improve chemical corrosion resistance, improve thermal shock stability, and reduce expansion. The effect of coefficients

Active Publication Date: 2016-01-20
HUZHOU YONGLIAN REFRACTORY MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, fused silica products have many limitations: the main problem is that the material is abrasive and the temperature is higher than 900 ° C to form cristobalite, and the erosion resistance is poor when casting high manganese steel
[0006] However, the functional parts of the continuous casting process are expensive, and they need to be stopped and replaced after a short period of use, which greatly increases the production cost of the steel plant

Method used

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  • Continuous casting flow control refractory material and its application
  • Continuous casting flow control refractory material and its application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Example 1 The upper brick bowl

[0030] According to the formula ratio of Example 1 in Table 1, the raw materials and the adhesive are mixed together to make batch materials; the batch materials are fed into the mold, and press-molded to make the upper brick bowl; dry and harden after demoulding.

Embodiment 2

[0031] Embodiment 2 The upper brick bowl

[0032] The implementation process of this embodiment is basically the same as that of Example 1, and the adjustment of its formula is shown in Table 1 for details.

Embodiment 3

[0033] Example 3 long nozzle bowl

[0034] According to the formula ratio of embodiment 3 in table 1, the raw materials and the binder are mixed together to make batch materials; the batch materials are fed into the mold, and press-molded to make the upper brick bowl; dry and harden after demoulding.

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Abstract

The invention discloses a continuous-casting flow-control refractory material and application thereof. The continuous-casting flow-control refractory material comprises the following components in parts by weight: 24-30 parts of white alundum, 29-35 parts of brown fused alumina, 9-11 parts of electrofused zirconium mullite, 18-22 parts of zirconium dioxide, 3-5 parts of active aluminum oxide, 4-6 parts of flake graphite, 0.5-1.5 parts of silicon carbide and 5-7 parts of binder. The high strength, high-temperature erosion resistance, high-temperature wear resistance, peel resistance and other requirements of the continuous-casting flow-control refractory material are ensured, and the flow control time can be further prolonged. The continuous-casting flow-control refractory material is especially suitable to be used as continuous-casting flow-control functional components of long nozzles and bowl parts thereof, brick cups and bowl parts thereof, and the like.

Description

technical field [0001] The invention relates to the technical field of refractory materials, and particularly discloses a continuous casting flow-controlling refractory material and its application. Background technique [0002] Since it became commercially available in the 1960s, the continuous casting process has grown enormously, and today approximately 80% of all steel is cast using this method. The continuous casting section is the production process of continuously casting the refined molten steel into billets. The main equipment includes a rotary table, a tundish, a crystallizer, and a tension leveler. The process flow of continuous casting is: transport the ladle containing the refined molten steel to the turntable, and after the turntable turns to the pouring position, pour the molten steel into the tundish, and the tundish distributes the molten steel to each crystallizer by the nozzle. [0003] In order to prevent the secondary oxidation of molten steel from the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/66
Inventor 邵建新杨帆
Owner HUZHOU YONGLIAN REFRACTORY MATERIALS
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