Anti-penetration tundish dry liner

An anti-penetration and particle size technology, applied in the field of anti-penetration dry-in-the-dry lining, can solve the problems of reducing the raw material cost and polluting the environment of the anti-penetration dry-in-contract lining, and achieves resistance to slag infiltration erosion, enhanced anti-oxidation ability, and improved cost performance. Effect

Active Publication Date: 2010-06-02
海城利尔麦格西塔材料有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since aluminum ash comes from non-ferrous smelting waste, the use of aluminum ash not only effectively solves the problem of land pollution caused by the discharge of non-ferrous smelting waste, but also reduces the cost of dry lining raw materials in the anti-permeation medium, and greatly improves the cost performance

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] The anti-permeation medium dry liner is made of the following ingredients in proportion by weight:

[0030] Magnesia, the particle size is 3-1mm, 1-0mm and below 200 mesh, 45 parts, the three particle sizes are proportioned according to the principle of close packing;

[0031] Olivine, or calcite or limestone, 3-1mm and 1-0mm, 40 parts, the two particle sizes are proportioned according to the principle of close packing;

[0032] Aluminum gray, Al 2 o 3 60-80%, Al 4-15% 10 parts

[0033] 5 parts phenolic resin

[0034] The technological process is as follows: crush and sieve magnesia, olivine, or calcite or limestone into the required particle size, mix with aluminum ash and binder in proportion by weight, mix evenly and pack into bags.

Embodiment 2

[0036] The anti-permeation medium dry liner is made of the following ingredients in proportion by weight:

[0037] Magnesia, the particle size is 3-1mm, 1-0mm and below 200 mesh, 70 parts, the three particle sizes are proportioned according to the principle of close packing;

[0038] Olivine, or calcite or limestone, 3-1mm and 1-0mm, 15 parts, the two particle sizes are proportioned according to the principle of close packing;

[0039] Aluminum gray, Al 2 o 3 60-80%, Al 4-15% 10 parts

[0040] 5 parts asphalt powder

[0041] The technological process is as follows: crush and sieve magnesia, olivine, or calcite or limestone into the required particle size, mix with aluminum ash and binder in proportion by weight, mix evenly and pack into bags.

Embodiment 3

[0043] The anti-permeation medium dry liner is made of the following ingredients in proportion by weight:

[0044] Magnesia, the particle size is 3-1mm, 1-0mm and below 200 mesh, 65 parts, the three particle sizes are proportioned according to the principle of close packing;

[0045] Olivine, or calcite or limestone, 3-1mm and 1-0mm, 20 parts, the two particle sizes are proportioned according to the principle of close packing;

[0046] Aluminum gray, Al 2 o 3 60-80%, Al 4-15% 10 parts

[0047] pitch powder, 5 parts

[0048] The technological process is as follows: crush and sieve magnesia, olivine, or calcite or limestone into the required particle size, mix with aluminum ash and binder in proportion by weight, mix evenly and pack into bags.

[0049] In above-mentioned embodiment, described physical and chemical index of finished product is:

[0050] Chemical composition / % MgO 65~95

[0051] SiO 2 2~25

[0052] CaO2~20

[0053] ...

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Abstract

The invention relates to an anti-penetration tundish dry liner which is produced by adopting non-ferrous melting aluminium scruff ash. Dry indefinite form fire resisting material for a working layer of the continuous casting tundish is produced by replacing spinel (or high bauxite) and silicon carbide by non-ferrous melting aluminium scruff ash as additive, using magnesite, olivine, calcite or limestone as main raw material and phenolic resin, asphalt powder or other organic substance as binder. The magnesite, olivine, calcite or limestone is crushed and sieved to the required grain size, then evenly mixed with the aluminium scruff ash and the binder based on parts by weight and finally bagged. The anti-penetration tundish dry liner has the advantages of: high strength subsequent to tundish heating and greatly reducing the possibility of tundish collapse after the heating; imparting excellent performance of resisting the penetration and erosion of slag to the material; not only effectively solving the problems about land occupancy and environmental pollution caused by the emission of non-ferrous melting waste, but also lowering the cost of the raw material for the anti-penetration tundish dry liner and remarkably enhancing performance price ratio.

Description

technical field [0001] The invention relates to an anti-permeation dry-dried lining produced by using waste aluminum ash from non-ferrous smelting. Background technique [0002] At present, the tundish dry lining materials widely used at home and abroad are still mainly limited to magnesia, forsterite and magnesium-calcium, and the tundish dry lining materials of magnesium are the main materials, and the binders are almost all phenolic resin or asphalt powder And other organic substances, the common problem is that the binder is first oxidized during baking and use, providing channels for the penetration of slag, making the material poor in resistance to slag penetration and erosion. Contents of the invention [0003] The purpose of the present invention is to replace spinel (or high alumina bauxite) and silicon carbide (or metal aluminum powder) with waste aluminum ash from nonferrous smelting as additives, and adopt magnesia, olivine, calcite or limestone as main raw mat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/66
Inventor 王相丰王生裘伟张义先
Owner 海城利尔麦格西塔材料有限公司
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