Molten iron pretreatment slag-gathering removing agent and preparation method thereof

A technology for molten iron pretreatment and slag accumulation, which is applied in the field of stripping agents, can solve the problems of large production costs, large viscosity of molten iron and iron slag, and large silicon dioxide content in production enterprises, and achieves increased output, less iron loss, and reduced accumulation. The effect of strong slag ability

Inactive Publication Date: 2008-09-10
TAIYUAN IRON & STEEL GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] The molten iron pretreatment process is one of the necessary means for smelting pure steel. In the molten iron pretreatment process, some enterprises use magnesium powder injection to carry out the molten iron desulfurization pretreatment. The viscosity of molten iron and iron slag after this method is relatively high. , a part of the molten iron is discharged along with the slag, and in serious cases, the discharged ironmaking slag contains 50% iron, causing a large waste and causing a large production cost for the production enterprise; the molten iron silica entering the converter The higher the content, the lower the quality of the steel produced

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0010] Embodiment 1: The molten iron pretreatment slag removal agent is composed of the following raw materials, pearl powder 80%, quartz sand 9%, glass 9%, borax 2%.

[0011] The preparation method of molten iron slag removal agent is realized through the following steps:

[0012] 1. Grind the above raw materials to a particle size of 50-70 mesh;

[0013] 2. Stir the ground raw materials in the mixer for 20 minutes according to the above formula to make a mixture;

[0014] 3. Dry the above mixture through a dryer until the water content is 0.25%.

Embodiment 2

[0015] Embodiment two: the raw material ratio of the present embodiment is pearl powder 77%, quartz sand 10%, glass 10%, borax 3% by weight percentage, and preparation method is identical with embodiment one.

Embodiment 3

[0016] Embodiment three: the raw material ratio of the present embodiment is 75% by weight of pearl powder, 10% of quartz sand, 10% of glass, and 5% of borax, and the preparation method is the same as that of embodiment one.

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Abstract

The invention provides a molten iron pretreating slag-off agent and a preparation method thereof. The invention is characterized in that the molten iron pretreating slag-off agent consists of the following raw materials which are mixed according to the weight percentage: pearl powder of ranging from 70 to 80 percent, quartz sand of ranging from 5 to 10 percent, glass of ranging from 5 to 10 percent and borax of ranging from 2 to 5 percent; the preparation method is realized by the steps of grinding the raw materials, stirring and mixing the raw materials and drying the raw materials. The invention is mainly used for the steel making process in the metallurgy industry and steel slag treatment after the molten iron pretreatment. The molten iron pretreating slag-off agent and the preparation method can rapidly gather and deslag the steel slag, have strong ability to absorb and gather the slag, great viscosity and little iron loss and can effectively and rapidly separate the iron from the slag, thereby increasing the output of the enterprise, lowering the production cost for the ironmaking enterprise and improving the economic benefits of the enterprise.

Description

Technical field: [0001] The invention belongs to a stripping agent for steel slag treatment after molten iron pretreatment in the iron and steel smelting process in the metallurgical industry. Background technique: [0002] The hot metal pretreatment process is one of the necessary means for smelting pure steel. In the hot metal pretreatment process, some enterprises use magnesium powder injection for hot metal desulfurization pretreatment. The viscosity of hot metal and iron slag after this method is relatively high. , a part of the molten iron is discharged along with the slag, and in serious cases, the discharged ironmaking slag contains 50% iron, causing a large waste and causing a large production cost for the production enterprise; the molten iron silica entering the converter The higher the content, the lower the quality of the steel produced. Invention content: [0003] The purpose of the present invention is to provide a quick slag accumulation agent and a prepar...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21C7/04
Inventor 程立
Owner TAIYUAN IRON & STEEL GROUP
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