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Slide board refractory containing titanium carbo-nitride and its preparing method

A titanium nitride sliding plate and refractory material technology, which is applied in the field of sliding plate refractory materials, can solve the problems of unsatisfactory comprehensive performance and achieve good thermal conductivity and chemical stability, good thermal shock resistance, good chemical stability and corrosion resistance sexual effect

Inactive Publication Date: 2007-04-11
WUHAN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the above-mentioned various sliding nozzle bricks all solve some problems individually, and their comprehensive performance is still not ideal.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] Example 1: A sliding plate refractory material containing titanium carbonitride and its preparation method

[0014] 67-71wt% bauxite, 18-22wt% sub-white corundum, 3-5wt% titanium carbonitride, 1-2wt% boron carbide powder, 1-2wt% metal aluminum powder, 3-6wt% % graphite, plus 3.5-4.5wt% thermosetting liquid phenolic resin, kneading, molding under the pressure of 200MPa, and heat treatment at 200°C for 24h to obtain a slide plate refractory product.

[0015] Among them: the alumina content of bauxite and sub-white corundum is 88-90wt% and 97-98.5wt% respectively, and the critical particle is 4mm; the chemical formula of titanium carbonitride is Ti(C 1-x N x ), where 0.1≤X≤0.5, the particle size is less than 0.088mm.

[0016] The test results of the slide refractory prepared in this example show that the apparent porosity is 7.5%, and the bulk density is 2.96g / cm 3 , normal temperature compressive strength 100MPa, 1400 ℃ buried carbon high temperature flexural strength ...

Embodiment 2

[0017] Example 2: A sliding plate refractory material containing titanium carbonitride and its preparation method

[0018] Mix 58-61wt% brown corundum, 20-24wt% white corundum, 4-7wt% magnesia, 5-6wt% titanium carbonitride, 5-7wt% graphite, add 3.5-4.5wt% Solid powdery phenolic resin and thermosetting liquid phenolic resin are kneaded, molded under a pressure of 200 MPa, and heat-treated at 200°C for 24 hours to obtain a slide plate refractory product.

[0019] Among them: the alumina content of brown corundum is 94-95wt%, the critical particle is 4mm, the alumina content of white corundum is 98-99.5wt%, the critical particle is 4mm, the magnesium oxide content of magnesia is 98-99wt%, and the particle size is less than 0.088mm; the chemical formula of titanium carbonitride is Ti(C 1-x N x ), where 0.2≤X≤0.8, the particle size is less than 0.088mm.

[0020] The test results of the slide refractory prepared in this example show that the apparent porosity is 8.0%, and the bul...

Embodiment 3

[0021] Example 3: A sliding plate refractory material containing titanium carbonitride and its preparation method

[0022] 50-56wt% sub-white corundum, 25-28wt% white corundum, 5-8% zirconia, 4-6wt% titanium carbonitride, 0.5-1wt% boron carbide powder, 1-2wt% Metal aluminum powder, 4-7wt% graphite will be mixed, and 3.5-4.5wt% thermosetting liquid phenolic resin will be added. After kneading, molding under 200MPa pressure, heat treatment at 200°C for 24h, the skateboard refractory product is obtained.

[0023] Among them: the alumina content of sub-white corundum and white corundum is 97-98.5wt% and 98-99.5wt%, respectively, the critical particle is 4mm, and the particle size of zirconia is less than 0.088mm; the chemical formula of titanium carbonitride is Ti(C 1-x N x ), where 0.3≤X≤0.9, the particle size is less than 0.088mm.

[0024] The test results of the slide refractory prepared in this example show that the apparent porosity is 7.8%, and the bulk density is 3.20g / cm...

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Abstract

The present invention relates to one kind of slide board refractory containing titanium carbonitride and its preparation process. The slide board refractory is prepared with alumina 75-90 wt%, magnesia 0-10 wt%, zirconium oxide 0-15 wt%, titanium carbonitride 0.5-30 wt%, boron carbide 0- 5 wt%, silicon carbide 0-5 wt%, metal aluminum 0-6 wt%, metal silicon 0-6 wt%, graphite 4-10 wt%, and organic binding agent 2-6 wt%, and through mixing, forming, and heat treatment at 100-300 deg.C or sintering at 1100-1500 deg.C. The slide board refractory of the present invention has the features of high antioxidant effect, high strength at high temperature, high slagging resistance and high heat shock resistance.

Description

1. Technical field [0001] The invention belongs to the field of slide refractory materials. In particular, it relates to a sliding plate refractory material containing titanium carbonitride and a preparation method thereof. 2. Background technology [0002] Sliding plate refractory material (or sliding plate brick, sliding nozzle brick) is one of the main components of the sliding nozzle system for steelmaking, and is a functional refractory material for controlling the flow of molten steel. Germany used sliding nozzles for the first time in 1964 and achieved success, while my country only began to promote the application of sliding nozzles in the early 1970s. The sliding nozzle system has many advantages: the device is installed outside the ladle, which is convenient for loading and unloading, simplifies the preparation of the ladle, and improves working conditions; pouring is safe and reliable, and pouring automation can be implemented; the pouring speed of molten steel c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/10C04B35/66
Inventor 李远兵覃显鹏李亚伟赵雷李淑静金胜利洪学勤雷中兴
Owner WUHAN UNIV OF SCI & TECH
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