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Tundish dry material added with monoclinic zirconium ore and preparation method of tundish dry material

A monoclinic zircon ore technology, applied in the field of refractory materials, can solve the problems of poor corrosion resistance of dry materials, and achieve the effects of strong corrosion resistance, cost reduction and good economic benefits

Inactive Publication Date: 2022-04-08
北京利尔高温材料股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The object of the present invention is to provide a tundish dry material with added monoclinic zirconite and its preparation method, through the design of the tundish dry material with added monoclinic zirconite to solve the technology of poor corrosion resistance of the dry material in the prior art question

Method used

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preparation example Construction

[0033] The present invention also provides a method for preparing a tundish dry material based on the addition of monoclinic zirconite as described in any one of the above, comprising the steps of:

[0034] Mix 85-95 parts of magnesia, 3-5 parts of resin powder, 0-2 parts of additives, 1-5 parts of monoclinic zirconite and 0-4 parts of sintering accelerator to obtain tundish dry material with added monoclinic zirconite .

[0035] The tundish dry material added with monoclinic zirconite provided by the invention uses magnesia, resin powder and monoclinic zirconite as raw materials to prepare the product, which has long service life, good oxidation resistance and strong erosion resistance.

[0036] Compared with the tundish dry material using zirconia micropowder (55,000-60,000 / ton), the present invention reduces the cost of the overall product and thus has better economic benefits .

[0037] The invention controls the thickness of the sintered layer through the addition of th...

Embodiment 1

[0039] Tundish dry feed with added monoclinic zirconite (sample 1):

[0040] In terms of parts by weight, 90 parts of magnesia, 5 parts of binder and 5 parts of monoclinic zirconite were mixed to obtain a dry tundish material (sample 1) with added monoclinic zirconite.

[0041] The bonding agent of the present embodiment is phenolic resin; ZrO in the monoclinic zirconite 2 The mass percentage content is ≥60%; the particle size of monoclinic zirconite is ≤200 mesh; the mass percentage content of MgO in magnesia is ≥80%.

[0042] The particles of magnesia include 5 parts of magnesia with a particle size of 3mm-5mm, 25 parts of magnesia with a particle size of 1mm-3mm, 30 parts of magnesia with a particle size of 200-1mm and 30 parts of magnesia with a particle size smaller than 200 mesh.

[0043] The obtained sample 1 was vibrated and baked to prepare a crucible, filled with steel slag, and baked at 1500°C for 3 hours. The crucible erosion depth of the obtained sample was betwe...

Embodiment 2

[0046] Tundish dry feed with added monoclinic zirconite (sample 2):

[0047] According to parts by weight, 88 parts of magnesia, 5 parts of binder, 2 parts of monoclinic zirconite and 2 parts of sintering accelerator were mixed to obtain sample 2.

[0048] The bonding agent of the present embodiment is phenolic resin; ZrO in the monoclinic zirconite 2 The mass percentage content is ≥60%; the particle size of the monoclinic zirconite is ≤200 mesh; the mass percentage content of MgO in the magnesia is ≥80%, and the burning agent is red clay.

[0049] The particles of magnesia include 5 parts of magnesia with a particle size of 3mm-5mm, 23 parts of magnesia with a particle size of 1mm-3mm, 30 parts of magnesia with a particle size of 200-1mm and 30 parts of magnesia with a particle size smaller than 200 mesh.

[0050] Sample 2 was vibrated and baked to prepare a crucible, filled with steel slag, and baked at 1500°C for 3 hours to obtain the crucible prepared by Sample 2. The ero...

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Abstract

The invention relates to the technical field of refractory materials, in particular to a tundish dry material added with monoclinic zirconium ore and a preparation method of the tundish dry material. The refractory material comprises the following components in parts by weight: 88-95 parts of magnesia, 3-5 parts of a binding agent, 1-5 parts of monoclinic zirconium ore and 0-4 parts of a combustion promoter, the technical problem that in the prior art, a tundish dry material is poor in corrosion resistance is solved through the design of the tundish dry material added with the monoclinic zircon ore.

Description

technical field [0001] The invention relates to the technical field of refractory materials, in particular to a tundish dry material added with monoclinic zirconite and a preparation method thereof. Background technique [0002] Due to the characteristics of long life, simple process and high working efficiency, dry material has been widely used in the working lining of tundish in recent years. The currently used dry material is mainly based on alkaline magnesium raw materials, which form a working layer after vibration and baking to resist erosion, erosion and penetration of molten steel and steel slag. [0003] CN113321492A discloses a kind of long-life tundish slag line dry material, discloses sintered magnesia, fused magnesia, solid resin powder, additive and sintering agent, in order to improve erosion resistance, additive selects zirconia micropowder for use. However, the price of zirconia micropowder is relatively high, which increases the manufacturing cost of the d...

Claims

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Application Information

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IPC IPC(8): C04B35/043C04B35/634C04B35/64B22D41/02
Inventor 徐浩然周轲赵辉于九利胡玲军任林刘靖轩
Owner 北京利尔高温材料股份有限公司
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