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Manganese alloying method for high manganese steel smelting through converter

A manganese alloying and converter smelting technology, applied in the direction of manufacturing converters, etc., to achieve sustainable development, improve manganese alloying processing capacity, and reduce overall costs.

Active Publication Date: 2021-05-28
ANGANG STEEL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The invention provides a manganese alloying method for smelting high manganese steel in a converter, realizes manganese alloying in the ladle, solves the problems and deficiencies of manganese alloying in the current converter smelting of high manganese steel, and can also improve the metal The effect of yield

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Embodiment 1

[0067] In this embodiment, 100 tons of high manganese steel with a carbon content of 0.10% and a manganese content of 10% to 13% are produced.

[0068] The specific method of manganese alloying of converter smelting high manganese steel is as follows:

[0069] (1) Metal manganese is crushed into particles with a particle size less than 10mm, the iron oxide scale on the surface of the slab is crushed into 80-mesh powder, and the metal aluminum is processed into silk floc;

[0070] (2) Mix the metal manganese particles, iron oxide scale powder, and silk flocculent metal aluminum in the step (1) according to the proportion of 5 parts, 2.5 parts, and 1 part by weight, and use the ball pressing machine to press the mixed materials into a mixture ball with a diameter of 50mm;

[0071] (3) Add the mixture balls in step (2) to the steel ladle whose inner wall temperature is 1100°C after preheating, and the addition amount is calculated according to the following formula:

[0072] ...

Embodiment 2

[0079] In this embodiment, 100 tons of high manganese steel with a carbon content of 0.20% and a manganese content of 20% to 24% are produced.

[0080] The specific method of manganese alloying of converter smelting high manganese steel is as follows:

[0081] (1) Metal manganese is crushed into particles with a particle size less than 10mm, the iron oxide scale on the surface of the slab is crushed into 80-mesh powder, and the metal aluminum is processed into silk floc;

[0082] (2) Mix the metal manganese particles, iron oxide scale powder, and silk flocculent metal aluminum in the step (1) according to the proportion of 6.5 parts, 3.5 parts, and 2 parts by weight, and use a ball press to press the mixed materials into a mixture ball with a diameter of 50mm;

[0083] (3) Add the mixture balls in step (2) to the steel ladle whose inner wall temperature is 1150°C after preheating, and the addition amount is calculated according to the following formula:

[0084]

[0085] ...

Embodiment 3

[0091] In this embodiment, 100 tons of high manganese steel with a carbon content of 0.30% and a manganese content of 15% to 20% are produced.

[0092] The specific method of manganese alloying of converter smelting high manganese steel is as follows:

[0093] (1) Metal manganese is crushed into particles with a particle size less than 10mm, the iron oxide scale on the surface of the slab is crushed into 80-mesh powder, and the metal aluminum is processed into silk floc;

[0094] (2) Mix the metal manganese particles, iron oxide scale powder, and silk flocculent metal aluminum in the step (1) according to the proportion of 6 parts, 3 parts, and 2.5 parts by weight, and use a ball press to press the mixed materials into a mixture ball with a diameter of 50mm;

[0095] (3) Add the mixture balls in step (2) to the steel ladle whose inner wall temperature is 1200°C after preheating, and the addition amount is calculated according to the following formula:

[0096]

[0097] In...

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Abstract

The invention relates to a manganese alloying method for high manganese steel smelting through a converter. The manganese alloying method comprises the following steps that before converter tapping, a mixed material ball prepared from metal manganese and / or manganese-iron alloy, oxidized iron scale and / or waste steel slag and metal aluminum is added into a steel ladle, and after tapping to the steel ladle is carried out, the solid metal manganese and / or manganese-iron alloy are heated and melted by utilizing heat released by oxidation of the metal aluminum, and manganese alloying of molten steel is achieved. The method solves the problem and defect of manganese alloying in high manganese steel smelting through the converter at present, and further can play a role in improving the metal yield.

Description

technical field [0001] The invention relates to the technical field of high manganese steel smelting, in particular to a manganese alloying method for smelting high manganese steel in a converter. Background technique [0002] According to different manganese content, high manganese steel will show excellent strength, plasticity, low temperature toughness, work hardening, and impact resistance safety, so it shows broad application potential in locomotives, automobiles, cryogenic containers, elevated buildings and other fields . However, during the smelting process of high manganese steel, a relatively large amount of metal manganese needs to be added, and the heat provided by the converter can only be used to melt limited manganese alloys, so that the manganese alloying of high manganese steel is restricted, and it has become a converter for smelting high manganese steel. The technical difficulties also restrict the large-scale industrial production of high manganese steel....

Claims

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Application Information

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IPC IPC(8): C21C5/28C21C5/34C21C7/00
CPCC21C5/28C21C7/0006C21C5/34Y02P10/20
Inventor 李德军廖相巍于赋志许孟春黄玉平彭春林康伟
Owner ANGANG STEEL CO LTD
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