Nitrogen removal agent for low-nitrogen metal manganese ingot production and preparation method thereof

By using a reducing agent to react with nitrogen in the air during the processing of manganese ingot and adsorbing a nitrogen remover for silicon nitride to form a protective film during the processing of manganese ingot, the problem of increased nitrogen content in the processing of manganese ingot is solved, and its performance and stability of the production process are improved.

CN119640059APending Publication Date: 2025-03-18XIANGXI FENGDA ALLOY TECH CO LTD
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Patent Information

Application Number
CN202411600929.8
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-11-11
Publication Date
2025-03-18

AI Technical Summary

Technical Problem

During the processing process, manganese metal easily reacts with nitrogen in the environment, resulting in an increase in nitrogen content in the ingot, affecting its performance and use effect.

Method used

A nitrogen removal agent including a reducing agent and a slag removal agent is used. The reducing agent reacts between liquid manganese water and air to form a new nitride. The slag removal agent forms a protective film by adsorbing silicon nitride to prevent the manganese water from contacting with the air to increase nitrogen.

Benefits of technology

It significantly reduces the nitrogen content in the manganese ingot, improves its performance, especially toughness, reduces brittleness problems, extends the service life of the product, and improves the stability and controllability of the production process.

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Abstract

The invention discloses a nitrogen removal agent for low-nitrogen metal manganese ingot production and a preparation method thereof, relates to the technical field of metal material processing, and aims to solve the problems that in the current low-nitrogen metal manganese ingot processing process, the nitrogen content in a metal manganese ingot is increased, and the nitrogen removal effect is poor due to the fact that the low-nitrogen metal manganese ingot and nitrogen in the environment are easily subjected to a combination reaction. The silicon nitride slag remover comprises a reducing agent and a slag remover, the reducing agent reacts with nitrogen in air to generate a new nitride when the liquid manganese water is heated to 1300 DEG C or above, and the slag remover can adsorb silicon nitride on the surface of the manganese water and form a protective film on the surface of the manganese water. According to the nitrogen removal agent and the production process thereof, the nitrogen content in the metal manganese ingot can be remarkably reduced, a dual-action mechanism is adopted, it is ensured that the nitrogen content of the metal manganese ingot is effectively controlled in the whole production process, and therefore the quality of the metal manganese ingot is improved; therefore, the requirements on low-nitrogen metal manganese ingots in the industries of steel, nonferrous metals and the like can be better met.
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