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Environment-friendly reinforced composite dephosphorization ladle brick for molten iron pretreatment and preparation method thereof

An environmentally friendly technology for molten iron pretreatment, which is applied in the field of energy-saving and environmentally friendly material preparation, can solve problems such as reducing the efficiency of brick use, dephosphorization inclusion damage, and erosion, so as to improve work efficiency, reduce procurement costs, and use long life effect

Pending Publication Date: 2020-11-27
巩义市益鑫耐火材料厂
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

During the use of the dephosphorization package, the inner wall of the dephosphorization package will be severely eroded, which will cause damage to the dephosphorization package on the one hand, and produce a large amount of residue at the same time
At the same time, during the preparation process of the bricks used for dephosphorization, after the bricks are machine-pressed, they need to undergo low-temperature heat treatment, so that the bricks can have a certain initial strength, so that they can meet the requirements of transportation. Reduce the efficiency of bricks from preparation to use

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] An environment-friendly reinforced composite dephosphorization-coated brick for molten iron pretreatment, made of the following raw materials in parts by weight: 8 parts of silicon carbide, 35 parts of dense corundum, 8 parts of natural flake graphite, 5 parts of zirconium corundum, high-purity 5 parts of carbon powder, 5 parts of fused magnesium aluminum spinel, 0.8 parts of polycrystalline alumina fiber, 0.58 parts of reinforcing agent, 3 parts of binder, and 2.3 parts of antioxidant.

[0030] Wherein, the binding agent is natural resin.

[0031] Meanwhile, the reinforcing agent is BASF Auffict TEGO 80 and carbon fiber.

[0032] And, by weight, the BASF Auffict TEGO 80 is 0.08 part, and the carbon fiber is 0.5 part.

[0033] Furthermore, the antioxidant is composed of metal silicon powder, metal aluminum powder and boron carbide, including 1 part of metal silicon powder, 1 part of metal aluminum powder, and 0.3 part of boron carbide by weight.

[0034] More specific...

Embodiment 2

[0045] An environmentally friendly reinforced composite dephosphorization coated brick for molten iron pretreatment, made of the following raw materials in parts by weight: 12 parts of silicon carbide, 45 parts of dense corundum, 12 parts of natural flake graphite, 10 parts of zirconium corundum, high-purity 8 parts of carbon powder, 10 parts of fused magnesia aluminum spinel, 1 part of polycrystalline alumina fiber, 1.1 parts of reinforcing agent, 3.5 parts of binder, and 5.5 parts of antioxidant.

[0046] Wherein, the binding agent is natural resin.

[0047] Meanwhile, the reinforcing agent is BASF Auffict TEGO 80 and carbon fiber.

[0048] And, by weight, the BASF Auffict TEGO 80 is 0.1 part, and the carbon fiber is 1 part.

[0049] Furthermore, the antioxidant is composed of metal silicon powder, metal aluminum powder and boron carbide, including 3 parts of the metal silicon powder, 2 parts of the metal aluminum powder, and 0.5 part of the boron carbide by weight.

[005...

Embodiment 3

[0061] An environment-friendly reinforced composite dephosphorization-coated brick for molten iron pretreatment, made of the following raw materials in parts by weight: 10 parts of silicon carbide, 40 parts of dense corundum, 10 parts of natural flake graphite, 8 parts of zirconium corundum, high-purity 7 parts of carbon powder, 8 parts of fused magnesia aluminum spinel, 0.9 parts of polycrystalline alumina fiber, 1 part of reinforcing agent, 3 parts of binder

[0062] 2 servings, 5 servings of antioxidants.

[0063] Wherein, the binding agent is natural resin.

[0064] Meanwhile, the reinforcing agent is BASF Auffict TEGO 80 and carbon fiber.

[0065] And, by weight, the BASF Auffict TEGO 80 is 0.09 part, and the carbon fiber is 0.91 part.

[0066] Furthermore, the antioxidant is composed of metal silicon powder, metal aluminum powder and boron carbide, including 2.8 parts by weight of the metal silicon powder, 1.8 parts of the metal aluminum powder, and 0.4 parts of the bo...

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PUM

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Abstract

The invention discloses an environment-friendly reinforced composite dephosphorization ladle brick for molten iron pretreatment and a preparation method thereof, and relates to the technical field ofpreparation of energy-saving and environment-friendly materials. The environment-friendly reinforced composite dephosphorization ladle brick for molten iron pretreatment is prepared from the followingraw materials in parts by weight: 8 to 12 parts of silicon carbide; 35-45 parts of compact corundum, 8-12 parts of natural crystalline flake graphite, 5-10 parts of fused alumina zirconia, 5-8 partsof high-purity carbon powder, 5-10 parts of fused magnesia-alumina spinel, 0.8-1 part of polycrystalline alumina fibers, 0.58-1.1 parts of a reinforcing agent, 3-3.5 parts of a binding agent and 2.3-5.5 parts of an antioxidant. The reinforced composite dephosphorization ladle brick can be quickly and conveniently transported, and has good anti-erosion and slag-falling-free performance.

Description

technical field [0001] The invention relates to the technical field of preparation of energy-saving and environment-friendly materials, in particular to an environment-friendly reinforced composite dephosphorization-coated brick for molten iron pretreatment and a preparation method thereof. Background technique [0002] With the development of science and technology and the higher and higher requirements of users for steel quality, the requirements for phosphorus content in finished steel are getting lower and lower. If there is no hot metal pretreatment dephosphorization process, iron ore with relatively high phosphorus content cannot be used. It can be used as raw material for iron smelting, or high-standard steel grades with low phosphorus content cannot be smelted. [0003] Phosphorus is one of the harmful impurities in steel. Steel containing more phosphorus is prone to brittle cracks when used at room temperature or lower. General stainless steel products [P]≤0.035%, s...

Claims

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Application Information

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IPC IPC(8): C04B35/80C04B35/66
CPCC04B35/66C04B2235/3206C04B2235/3826C04B2235/425C04B2235/428C04B2235/402C04B2235/3821C04B2235/422C04B2235/3222C04B2235/3217C04B2235/5224C04B2235/602C04B2235/9607C04B2235/9676
Inventor 张中钦王建佩张佳佳张晓晨安振鹏王鹏飞卢松峰王朝现
Owner 巩义市益鑫耐火材料厂