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Compounded deoxidized material as well as preparation method and application thereof

A composite deoxidation material and composite deoxidation technology, applied in the direction of recycling technology, etc., can solve the problems of limited processing capacity, inclusions, and high cost of deoxidizers, and achieve strong inclusion adsorption capacity, good affinity, and easy melting and floating. Effect

Inactive Publication Date: 2014-03-05
XIXIA COUNTY SHUNFA NEW FURNACE CHARGE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a composite deoxidation material and its preparation method and application, which can overcome the disadvantages of current deoxidizers such as high cost, limited processing capacity or easy formation of inclusions.

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  • Compounded deoxidized material as well as preparation method and application thereof
  • Compounded deoxidized material as well as preparation method and application thereof

Examples

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Effect test

Embodiment 1

[0035]Composite deoxidation material aluminum-calcium alloy, its weight percent composition is as follows: Al 50%, Ca 25%, Si 2.8%, alumina 16.65%, calcium oxide 5.55%. The particle size of the aluminum-calcium alloy is 10-40mm. The melting point is controlled at 1300-1400°C.

[0036] The preparation method of the composite deoxidation material is as follows: First, the ingredients are prepared according to the following parts by weight: 40 parts of aluminum pellets, 57 parts of electric furnace premelt, and 3 parts of hydroxymethyl cellulose; Heating under the conditions until it is completely melted, then adding aluminum particles and hydroxymethyl cellulose and mixing evenly.

[0037] The electric furnace premelt is composed of alumina, fluorite and calcium oxide in a mass ratio of 2:1:2.

[0038] The particle size of alumina, fluorite and calcium oxide is not more than 3mm.

[0039] The substance obtained after melting the electric furnace premelt is processed to a size...

Embodiment 2

[0041] Composite deoxidation material aluminum-calcium alloy, its weight percent composition is as follows: Al 45%, Ca 15%, alumina 27.0%, calcium oxide 10.8%, and the others are Si. The particle size of the aluminum-calcium alloy is 10-40mm. The melting point is controlled at 1300-1400°C.

[0042] The preparation method of the composite deoxidation material is as follows: first, the ingredients are prepared according to the following parts by weight: 30 parts of aluminum pellets, 50 parts of electric furnace premelt, and 2 parts of hydroxymethyl cellulose. Others are the same as embodiment 1.

Embodiment 3

[0044] Composite deoxidation material aluminum-calcium alloy, its weight percent composition is as follows: Al 65%, Ca 30%, alumina 3.0%, calcium oxide 1.0%, and the others are Si. The particle size of the aluminum-calcium alloy is 10-40mm. The melting point is controlled at 1300-1400°C.

[0045] The preparation method of the composite deoxidation material is as follows: first, the ingredients are prepared according to the following parts by weight: 50 parts of aluminum pellets, 65 parts of electric furnace premelt, and 4 parts of hydroxymethyl cellulose. Others are the same as embodiment 1.

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Abstract

The invention belongs to the technical field of steel making, and particularly relates to a compounded deoxidized material for the deoxidization of steel slag or molten steel as well as a preparation method and an application thereof. The compounded deoxidized material is kalzium metal and comprises the following components in percentage by weight: 45-65% of Al, 15-30% of Ca, less than 3% of Si and the balance of aluminium oxide and calcium oxide mixture. The particle size of the kalzium metal is 10-40mm. The kalzium metal is the novel compounded deoxidized material which can be used for realizing the deoxidization and desulfurization of the steel slag and the molten steel and the inclusion adsorption and integrates the functions of deoxidization, purification and refinement; by adopting the compounded deoxidized material, the production cost of steel making is reduced under the condition of ensuring the quality.

Description

technical field [0001] The invention belongs to the technical field of steelmaking, and in particular relates to a composite deoxidation material used for deoxidation of steel slag or molten steel, a preparation method and application thereof. Background technique [0002] The deoxidizing materials used in the traditional steel slag or molten steel deoxidation process mainly include metal deoxidizers and non-metal deoxidizers. Among them, metal deoxidizers are expensive and have no ability to treat ladle slag; non-metal deoxidizers have the disadvantages of easily forming inclusions in steel and easily increasing carbon. In addition, the traditional process adds deoxidizing materials, refining agents, etc. to the ladle. The variety and total amount are too large, resulting in excessive slag in the ladle, which is very unfavorable for subsequent processing. Contents of the invention [0003] The purpose of the present invention is to provide a composite deoxidizing materia...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21C7/06C21B3/06
CPCY02W30/50
Inventor 余永增
Owner XIXIA COUNTY SHUNFA NEW FURNACE CHARGE CO LTD
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