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Pre-melting buried arc composite refining slag and method for making same

A technology for compound refining and refining slag, applied in the direction of improving process efficiency, can solve the problems of fast slag melting, energy waste, short refining time, etc., and achieve the effect of prolonging the life of the furnace lining, reducing the cost of slag consumption, and improving the performance of the slag system

Inactive Publication Date: 2007-08-08
赵佳云
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  • Description
  • Claims
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Problems solved by technology

The pre-melted refining slag in the prior art is a flux material used in ladle furnace refining, which is characterized by low melting point and fast slag melting; short refining time and good effect; no moisture absorption and no pulverization during transportation and storage , no agglomeration, easy to use; its disadvantage is that it does not have the function of foaming and submerged arc, and the leakage of electrode arc light causes energy waste and damages the furnace lining
As a compensation method, additional submerged arc slag can be added, but the amount of slag and the cost are increased, and because of its composition structure, it often has a negative effect on the premelting refining slag, which affects the refining effect of the slag system

Method used

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Embodiment Construction

[0014] The pre-melted submerged arc composite refining slag and the preparation method thereof of the present invention are realized in this way, and will be described in detail below. Pre-melted submerged arc composite refining slag is a new type of composite material refined outside the steelmaking furnace. It uses pre-melted refining slag as the basic raw material and adds foaming submerged arc material accounting for 10-30% of the total preparation;

[0015] Premelted refining slag is made of limestone, dolomite, bauxite and fluorite; when the cupola is a melting furnace and coke is used as fuel, the ash after combustion is also used as raw material;

[0016] The foamed submerged arc material is made of carbonate: limestone, barite, dolomite, soda and carbon and carbide: carbon powder, calcium carbide and silicon carbide are the raw materials of the foamed submerged arc material; the above foamed submerged arc material can be based on Refining needs to choose two or more o...

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Abstract

The invention discloses a premelting buried arc composite refining slag and making method, which comprises the following steps: adopting premelting slag with grain size at 2-30mm as basic material; adding 10-30% foaming buried arc material; blending completely through machine; obtaining the product.

Description

technical field [0001] The invention relates to a new material for refining outside a steelmaking furnace, in particular to a new type of composite material for refining in a ladle furnace—premelting submerged arc composite refining slag and a preparation method thereof. Background technique [0002] At present, steel mills generally adopt ladle furnace refining technology in order to obtain better technical and economic results. In the refining process of ladle furnace, the selection of refining slag is very important. The pre-melted refining slag in the prior art is a flux material used in ladle furnace refining, which is characterized by low melting point and fast slag melting; short refining time and good effect; no moisture absorption and no pulverization during transportation and storage , No agglomeration, easy to use; its disadvantage is that it does not have the function of foaming and submerged arc, and the leakage of arc light from the electrode causes energy was...

Claims

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Application Information

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IPC IPC(8): C21C7/076
CPCY02P10/20
Inventor 赵佳云
Owner 赵佳云
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