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Multifunctional pre-melted slag refining agent for steelmaking and preparation method of multifunctional pre-melted slag refining agent

A technology of pre-melting slag and refining agent, applied in the field of multi-functional steel-making pre-melting slag refining agent and its preparation, can solve the problems of poor electrical conductivity and weak oxygen ion migration force, shorten the refining time, The effect of widening activity and improving conductivity

Inactive Publication Date: 2021-05-18
河北震刚能源科技研发有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to provide a multifunctional pre-slag refining agent for steelmaking and its preparation method to solve the problems of weak oxygen ion migration and poor conductivity in the prior art

Method used

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  • Multifunctional pre-melted slag refining agent for steelmaking and preparation method of multifunctional pre-melted slag refining agent
  • Multifunctional pre-melted slag refining agent for steelmaking and preparation method of multifunctional pre-melted slag refining agent
  • Multifunctional pre-melted slag refining agent for steelmaking and preparation method of multifunctional pre-melted slag refining agent

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Embodiment 1

[0025] This embodiment provides a multifunctional pre-slag refining agent for steelmaking. The raw materials for preparing the multifunctional pre-slag refining agent for steelmaking include materials rich in alumina, materials rich in oxide locks and materials rich in calcium oxide .

[0026] Preferably, the alumina-rich material is aluminum ash / aluminum slag produced in the electrolytic aluminum production process: the calcium oxide-rich material is calcium carbide slag, quicklime powder, white mud for papermaking, calcium powder, lime dust , any one or more of waste calcareous ash.

Embodiment 2

[0028] This embodiment provides a multifunctional pre-slag refining agent for steelmaking. The raw materials for preparing the pre-slag refining agent include the following components calculated in parts by weight: SiO 2 3 parts, CaO 9.5 parts, A1 2 o 3 1 part, MgO 1.0 part, CaF 2 1 serving.

Embodiment 3

[0030] This embodiment provides a multifunctional pre-slag refining agent for steelmaking. The raw materials for preparing the pre-slag refining agent include the following components calculated in parts by weight: SiO 2 63 parts, 44 parts of CaO, A1 2 o 3 50 parts, MgO 5.0 parts, CaF 2 5 servings.

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Abstract

The invention provides a multifunctional pre-melted slag refining agent for steelmaking and a preparation method of the multifunctional pre-melted slag refining agent for steelmaking. The multifunctional pre-melted slag refining agent for steelmaking is prepared from the raw materials including, by weight, 3-63 parts of SiO2, 9.5-44 parts of CaO, more than 0 and smaller than or equal to 50 parts of Al2O3, more than 0 and less than or equal to 5.0 parts of MgO and 1-5 parts of CaF2. According to the multifunctional pre-melted slag refining agent for steelmaking, fluoride is removed through smelting, the activity of raw lime CaO under electric field adjustment is widened, oxygen ion migration is facilitated, the conductivity is improved, and the problems that in the prior art, oxygen ion migration force is weak and conductivity is poor are solved. According to the pre-melted slag refining agent, aluminum ash / aluminum slag generated in the electrolytic aluminum production process can be selected as a raw material, and the problem about industrial waste raw materials which are difficult to treat at present is solved. When the multifunctional pre-melted slag refining agent for steelmaking is used for refining, in addition to deoxidation, desulfurization, denitrification, dephosphorization and impurity removal, slag is easy to foam, the temperature is rapidly increased, and the steel quality is improved.

Description

technical field [0001] The invention relates to the technical field of materials for smelting deoxidation, in particular to a multifunctional pre-melted slag refining agent for steelmaking and a preparation method thereof. Background technique [0002] The purity of molten steel directly affects the performance and quality of steel and determines the purity of steel. There are many factors. It is not a simple process to remove various impurities in the smelting process. With the development of social science and technology, people have higher and higher requirements for the purity of steel. [0003] Traditional methods such as desulfurization and deoxidation can no longer meet people's requirements. In order to reduce or even avoid the pollution of deoxidation, desulfurization and other impurities to molten steel, it is an important way to reduce the purity of molten steel and improve the surface and internal quality of products. Oxygen and nitrogen in the molten steel mus...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21C7/06C21C7/064C21C7/04
CPCC21C7/0087C21C7/04C21C7/06C21C7/0645
Inventor 刘继唐
Owner 河北震刚能源科技研发有限公司
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