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Composite mould for fusion-casting refractory material and manufacturing method thereof

A technology of melting and casting refractory materials and composite molds, which is applied in the field of refractory materials, can solve the problems of limited temperature resistance and inability to produce with melting and casting refractory materials, and achieve the effects of not easy to fall off, easy to clean, and smooth surface

Inactive Publication Date: 2007-12-05
郑州东方安彩耐火材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In addition, the mold is only suitable for producing fused cast refractory materials with a casting temperature below 1800°C (such as fused cast zirconia corundum series); for fused cast refractory materials with a casting temperature above 1800°C (such as fused cast alumina series), due to the existing mold can With limited temperature resistance, it cannot be used in the production of cast refractory materials with a casting temperature above 1800°C

Method used

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  • Composite mould for fusion-casting refractory material and manufacturing method thereof

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Comparison scheme
Effect test

Embodiment 1

[0015] Embodiment 1, a composite mold for melting and casting refractory materials, with the high-temperature alumina of particle size 200 mesh as raw material (component content is Al 2 o 3 98%, SiO 2 0.9%, Na 2 (00.8%), plus the water glass of its weight percentage 11% as binding agent, brush on SiO after mixing uniformly 2 The side of the mold matrix 2 that is in contact with the high-temperature melt of the cast refractory material is baked and solidified at 200-300° C. to form a composite mold with a composite layer 1 . Composite layer thickness / substrate thickness=1 / 10. Composite layer chemical composition (percentage by weight) composition is shown in Table 1 (the rest are impurities):

[0016] Table I

[0017] project

Embodiment 2

[0018] Embodiment 2, a composite mold for melting and casting refractories, with 80% by weight of industrial alumina, 13% of soda ash and 7% of quartz sand as raw materials, the fineness of raw materials is 0.5-3mm, and 11% by weight of Water glass, mixed evenly and bonded to SiO 2 The side of the mold base 2 that is in contact with the high-temperature melt of the cast refractory material is baked and solidified at 200-300° C. to form a composite mold with a composite layer 1 . Composite layer thickness / substrate thickness=1 / 1. The chemical composition (percentage by weight) of industrial alumina is shown in Table 2:

[0019] Table II

[0020] project

Al 2 o 3

SiO 2

Na 2 o

Industrial alumina (%)

98.5

0.5

1.0

[0021] The chemical composition (percentage by weight) of the composite layer is shown in Table 3 (the rest are impurities):

[0022] Table three

[0023] project

Embodiment 3

[0024] Embodiment 3, a composite mold for melting and casting refractories, with high-purity alumina as raw material (alumina content of 99.5% by weight), fineness of 300 mesh, plus 5% by weight of FNJCY-121 type phenolic resin As a binder, mix well and brush on SiO2 2 The side of the mold matrix 2 that contacts the high-temperature melt of the cast refractory material is solidified at room temperature to form a composite mold with a composite layer 1 . Composite layer thickness / substrate thickness=1 / 10. The chemical composition (percentage by weight) of the composite layer is shown in Table 4 (the rest are impurities):

[0025] Table four:

[0026] project

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Abstract

The present invention is composite mold for fusion casting refractory material and its making process, and belongs to the field of refractory material technology. The composite mold includes one SiO2 base body and one lining layer of composite material, which consists of Al2O3 79-100 wt%, SiO2 0-10 wt%, Na2O 0-10 wt% and other components 0-1 wt%. Its making process includes preparing alumina with or without quartz sand and soda ash as main material, mixing with organic adhesive or inorganic adhesive water glass in 8-20 wt%, applying the mixture to the inner wall of SiO2 base body of mold, and curing at room temperature for organic adhesive or in 100-400 deg.c for water glass. The compounded layer has thickness of 0.1-10 times that of the base body and material granularity of 0.01-8 mm. The mold has high heat resistance and no contamination to the refractory material product.

Description

technical field [0001] The invention belongs to the technical field of refractory materials, and in particular relates to a composite mold for melting and casting refractory materials and a manufacturing method thereof. Background technique [0002] Molds are needed in the production process of fused cast refractory materials, and the existing mold components are mainly SiO 2 , its softening temperature is 1500°C. During the casting process of melting and casting refractory materials, the inner surface of the mold is impacted by the high-temperature refractory melt and falls off, causing scarring on the surface of the product, and in severe cases, the product is scrapped; due to the low softening temperature of the mold, it is easy to melt and cast The high-temperature melt of the refractory material is fused together, and the surface is not easy to clean. [0003] The existing mold mainly uses silica sand as raw material, and its particle size is mixed and prepared in a ce...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/10C04B28/24B28B1/54B22C1/00
Inventor 魏国钊郭勇赵银福闫建敏郭栋梁董运昆杨继伟
Owner 郑州东方安彩耐火材料有限公司
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