Refractory material with high strength and mechanical property

A refractory, high-strength technology, applied in the field of refractory research and development, can solve the problems of unfavorable recycling, difficult recycling, general mechanical properties, etc. The effect of improved performance

Inactive Publication Date: 2018-05-15
安徽雷萨重工机械有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Bauxite, magnesite and graphite are the three major refractory raw materials. After processing, they have good refractory performance, but their mechanical properties are average, and recycling is difficult, which is not conducive to recycling

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] A refractory material with high strength and mechanical properties, which is made of the following components in terms of mass percentage: 23% zirconia, 18% silica, 2.0% alumina, 1.0% iron oxide, 0.6% titanium dioxide, The rare earth component accounts for 0.3%, and the rest is pyrite slag, and its preparation method comprises the following steps:

[0019] (1) Dry pyrite slag at 100°C to constant weight, then grind it with a ball mill until it passes through an 80-mesh sieve to obtain pyrite slag fine powder, and calcinate the pyrite slag fine powder at 1150°C for 2 hours , to prepare slag clinker;

[0020] (2) Mix zirconia and silica, add sulfuric acid with a concentration of 80% and soak for 30 minutes, remove and rinse until neutral, then calcinate at 680°C for 3 hours, then mix with slag clinker, alumina, iron oxide, Mix titanium dioxide and rare earth components, add water with a mass percentage of 8%, stir evenly and stale for 15 hours;

[0021] (3) Put the stal...

Embodiment 2

[0028] A refractory material with high strength and mechanical properties, which is made of the following components in terms of mass percentage: 24% zirconia, 19% silica, 2.2% alumina, 1.1% iron oxide, 0.7% titanium dioxide, The rare earth component accounts for 0.4%, and the rest is pyrite slag, and its preparation method comprises the following steps:

[0029] (1) Dry pyrite slag at 105°C to constant weight, then grind it with a ball mill until it passes through a 90-mesh sieve to obtain pyrite slag fine powder, and calcinate the pyrite slag fine powder at 1200°C for 2.5 hours , to prepare slag clinker;

[0030] (2) Mix zirconia and silica, add sulfuric acid with a concentration of 90% and soak for 35 minutes, remove and rinse until neutral, then calcinate at 700°C for 3.5 hours, then mix with slag clinker, alumina, iron oxide, Mix titanium dioxide and rare earth components, add water with a mass percentage of 9%, stir evenly and stale for 16 hours;

[0031] (3) Put the s...

Embodiment 3

[0038] A refractory material with high strength and mechanical properties, which is made of the following components in terms of mass percentage: 25% zirconia, 20% silica, 2.5% alumina, 1.2% iron oxide, 0.8% titanium dioxide, The rare earth component accounts for 0.5%, and the rest is pyrite slag, and its preparation method comprises the following steps:

[0039] (1) Dry the pyrite slag at 110°C to constant weight, then grind it with a ball mill until it passes through a 80-100 mesh sieve to obtain fine pyrite slag powder, and calcinate the pyrite slag fine powder at 1250°C 3 hours, prepared slag clinker;

[0040] (2) Mix zirconia and silica, add sulfuric acid with a concentration of 95% and soak for 40 minutes, remove and rinse until neutral, then calcinate at 720°C for 4 hours, then mix with slag clinker, alumina, iron oxide, Mix titanium dioxide and rare earth components, add water with a mass percentage of 10%, stir evenly and stale for 18 hours;

[0041] (3) Put the sta...

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Abstract

The invention relates to the technical field of researches and developments of refractory materials, and discloses a refractory material with high strength and mechanical property. A large number of non-clay silicate components in iron pyrite are used; zirconium oxide and silicon dioxide are used as skeleton structures and raw materials; aluminum oxide, ferric oxide and the like are used as combustion aids; a multiphase material is sintered to be compact by using a toughening mechanism of a rare earth element to a zirconium oxide material through a liquid phase sintering mechanism of the rareearth element under a reducing atmosphere, so that the mechanical property of the refractory material is improved; furthermore, an optimal raw material proportion, an optimal granularity and an optimal sintering temperature are researched to improve the compaction degree and the physical property of the material, so that the refractory material with high strength and mechanical property is prepared; furthermore, the recycling and utilization rate is high.

Description

technical field [0001] The invention belongs to the technical field of research and development of refractory materials, and in particular relates to a refractory material with high-strength mechanical properties. Background technique [0002] A class of inorganic non-metallic materials with a refractoriness not lower than 1580°C. Refractoriness refers to the Celsius temperature at which a refractory conical sample can resist high temperature without softening and melting without load. However, it is not possible to fully describe refractory materials only by the definition of refractoriness, and 1580°C is not absolute. It is now defined as a material whose physical and chemical properties allow it to be used in a high temperature environment is called a refractory material. Refractory materials are widely used in metallurgy, chemical industry, petroleum, machinery manufacturing, silicate, power and other industrial fields, and are used in the largest amount in the metallu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/66C04B33/138
CPCC04B33/1328C04B33/138C04B35/66C04B2235/3217C04B2235/3227C04B2235/3229C04B2235/3232C04B2235/3244C04B2235/3272C04B2235/3418C04B2235/6562C04B2235/6565Y02P40/60
Inventor 陶小飞
Owner 安徽雷萨重工机械有限公司
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