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Multipurpose calcium-based compound desulfurizer and preparation method thereof

A desulfurization agent and multi-purpose technology, applied in the field of iron and steel smelting, can solve the problems of low purity and poor desulfurization effect, and achieve the effects of not occupying production time, improving desulfurization effect, and shortening desulfurization reaction time

Inactive Publication Date: 2015-12-09
贺勇刚
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to reasons such as processing technology and cost, the calcium oxide material itself is not high in purity and has a large sulfur content, resulting in poor desulfurization effect

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Embodiment 1: A multi-purpose calcium-based composite desulfurizer, including calcium oxide comprising 50 parts by mass, calcium carbide of 5 parts by mass, fluorite of 1 part by mass, flake graphite of 1 part by mass and mass Aluminum in parts 0.1; Calcium oxide with a purity greater than or equal to 94%.

Embodiment 2

[0033] Embodiment 2: A multipurpose calcium-based composite desulfurizer includes calcium oxide in parts by mass 95, calcium carbide in parts by mass 30, fluorite in parts by mass, flaky graphite in parts by mass and parts by mass 5 aluminum, the purity of calcium oxide is greater than or equal to 94%.

Embodiment 3

[0034] Embodiment 3: A multi-purpose calcium-based composite desulfurizer includes calcium oxide of 70 parts by mass, calcium carbide of 20 parts by mass, fluorite of 5 parts by mass, flaky graphite of 3 parts by mass and 2.5 aluminum, the purity of calcium oxide is greater than or equal to 94%.

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Abstract

A multipurpose calcium-based compound desulfurizer comprises the components of, by mass, 50-95 parts of calcium oxide, 5-30 parts of calcium carbide, 1-10 parts of fluorite, 1-5 parts of flaky graphite and 0.1-5 parts of aluminum. The purity of the calcium oxide is larger than or equal to 94%. The desulfurizer is applicable to molten iron desulphurization through a dispersion assisting method, that is, desulphurization equipment is not added, and production time is not occupied; the desulfurizer can also be used for adsorbing magnesium sulfide in a magnesium-based blowing desulfurization process, and the effects of desulfurization and resulfurization prevention are achieved; meanwhile, the desulfurizer can be further used for desulfurizing refined RH molten steel in steel making after mechanical forming. The multipurpose calcium-based compound desulfurizer is made of high-purity main materials which are high in activity, and various catalysts are added, so that compared with products used in the market at present, the desulfurization effect of the desulfurizer is improved by more than 30%, and the desulfurization reaction time of the desulfurizer is shortened by about 50%.

Description

technical field [0001] The invention relates to the technical field of iron and steel smelting, in particular to a multipurpose calcium-based composite desulfurizer and a preparation method thereof. Background technique [0002] The high sulfur content in steel leads to the reduction of plasticity and toughness of steel, which affects the quality of steel. The molten iron used for steelmaking generally contains high sulfur content, so desulfurization treatment is required. [0003] Using calcium oxide as the main component of the desulfurizer, and then adding other auxiliary materials is a popular method for desulfurization of molten iron and steel. However, due to reasons such as processing technology and cost, the calcium oxide material itself is not high in purity and has a large sulfur content, resulting in poor desulfurization effect. Contents of the invention [0004] The technical problem to be solved by the present invention is to overcome the above defects in th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21C7/064
Inventor 贺勇刚
Owner 贺勇刚
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