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Slagging and antifoaming agent

A slag defoamer and defoamer technology, applied in blast furnaces, furnace types, furnaces, etc., can solve problems such as affecting production and molten iron quality, increasing labor intensity of workers, and reducing equipment utilization.

Inactive Publication Date: 2011-09-14
西峡县鑫宇冶金耐材有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Blast furnace tapping inevitably produces a large amount of iron slag and foams. The inherent physical properties of these iron slags determine that it is very easy to bond and deposit on the wall of the sinking iron gutter, iron ladle, and torpedo tank, increasing the labor intensity of workers. , reducing equipment utilization, seriously affecting production and molten iron quality

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Example 1: The weight percentages of the various raw materials are: 8 parts of fluorite, 4 parts of industrial soda ash, 53 parts of wollastonite, 20 parts of cement clinker, and 15 parts of coke. The invention can effectively suppress the cooling of molten iron by 5-10 degrees, absorb some harmful non-metallic inclusions in the molten iron, reduce the melting point of iron slag by 10-20 degrees, thereby reducing its viscosity, enhancing its fluidity, and reducing the bonding of iron slag into shells The opportunity enables the effective volume of the molten iron tank and torpedo tank to be used, which can reach the designed iron capacity of the equipment and also improve the service life of the equipment; the yield of molten iron is increased by 0.4%.

Embodiment 2

[0016] Example 2: The weight percentages of the various raw materials are: 15 parts of fluorite, 7 parts of industrial soda ash, 45 parts of wollastonite, 15 parts of cement clinker, and 18 parts of coke. The invention can effectively suppress the cooling of molten iron by 8-15 degrees, absorb some harmful non-metallic inclusions in the molten iron, reduce the melting point of iron slag by 20-30 degrees, thereby reducing its viscosity, enhancing its fluidity, and reducing the iron slag bonding into shells The opportunity enables the effective volume of the molten iron tank and torpedo tank to be used, which can reach the designed iron capacity of the equipment and also improve the service life of the equipment; the yield of molten iron is increased by 0.55%.

Embodiment 3

[0017] Embodiment 3: The weight percent of each raw material is: 20 parts of fluorite, 10 parts of industrial soda ash, 40 parts of wollastonite, 10 parts of cement clinker, and 20 parts of coke. The invention can effectively suppress the cooling of molten iron by 10-18 degrees, absorb some harmful non-metallic inclusions in the molten iron, reduce the melting point of iron slag by 25-30 degrees, thereby reducing its viscosity, enhancing its fluidity, and reducing the iron slag bonding into shells The opportunity enables the effective volume of the molten iron tank and the torpedo tank to be used, which can reach the designed iron capacity of the equipment and also improve the service life of the equipment; the yield of molten iron is increased by 0.7%.

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Abstract

The invention discloses a slagging and antifoaming agent which is used in blast-furnace iron making. The slagging and antifoaming agent is prepared from the following raw materials in parts by weight: 8-20 parts of fluorite, 4-10 parts of industrial sodium carbonate, 30-60 parts of wollastonite, 15-20 parts of cement clinker and 10-20 parts of coke. The fluorite, the industrial sodium carbonate, the wollastonite, the cement clinker and the coke are mixed, stirred, granulated, dried and packaged, so that the raw materials are mixed to exert effects; and the slagging and antifoaming agent has a better slagging and antifoaming effect in iron making by virtue of proper alkalinity, lower melting point and extremely good fluidity. Due to the adoption of the technical scheme, compared with the prior art, the slagging and antifoaming agent has the advantages of no dust, environmental friendliness and unavailability in corrosion of refractory materials and equipment.

Description

technical field [0001] The invention belongs to the technical field of ironmaking auxiliary materials, and in particular relates to a slagging defoamer used in blast furnace ironmaking. Background technique [0002] Blast furnace tapping inevitably produces a large amount of iron slag and foams. The inherent physical properties of these iron slags determine that it is very easy to bond and deposit on the wall of the sinking iron gutter, iron ladle, and torpedo tank, increasing the labor intensity of workers. , reducing equipment utilization, seriously affecting production and molten iron quality. Contents of the invention [0003] In order to solve the above technical problems, the object of the present invention is to provide a slagging defoamer with good thermal insulation and slagging properties. The slag defoaming agent can effectively inhibit the cooling of molten iron, prevent the secondary oxidation of molten iron, prevent the surface of molten iron in the sinking ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21B3/06C21B5/00
CPCY02W30/50
Inventor 符德选封保均张忠杰张小伟王晓燕
Owner 西峡县鑫宇冶金耐材有限责任公司
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