Economical chromium-manganese stainless steel smelting production method and system

A production method, stainless steel technology, applied in the direction of improving process efficiency, etc., can solve the problems of unsatisfactory yield of stainless steel scrap elements, high investment and operation costs, and large waste discharge, so as to achieve efficiency and environmental protection superiority, construction The effect of short cycle and low investment

Inactive Publication Date: 2020-09-15
BERIS ENG & RES CORP
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Problems solved by technology

[0007] In the traditional "two-step method", the smelting of stainless steel scrap elements by electric arc furnace has the defects of unsatisfactory yield, high investmen

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  • Economical chromium-manganese stainless steel smelting production method and system
  • Economical chromium-manganese stainless steel smelting production method and system

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Embodiment Construction

[0048] In order to fully understand the purpose, features and effects of the present invention, the present invention will be described in detail through the following specific embodiments. Process method of the present invention except following content, all the other all adopt the routine method or device of this field. Unless otherwise specified, the following nouns and terms have the meanings commonly understood by those skilled in the art.

[0049] The terms "the", "said", "a" and "an" as used herein do not denote a limitation of quantity but mean that there is at least one of the referred item. Additionally, all ranges disclosed herein are inclusive of endpoints and are independently combinable.

[0050] Specifically, an economical chromium-manganese stainless steel smelting production method of the present invention includes:

[0051] (1) stainless steel scrap is added to the alloy melting furnace, energized and melted to obtain the stainless steel mother liquor;

[...

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Abstract

The invention belongs to the technical field of stainless steel smelting, and relates to an economical chromium-manganese stainless steel smelting production method and system. The economic chromium-manganese stainless steel smelting production method comprises the following steps: (1) adding stainless steel scrap into an alloy melting furnace, and melting the scrap with electricity to obtain stainless steel mother liquor; (2) sampling and analyzing the stainless steel mother liquor, and submitting components to an AOD refining process; (3) mixing the stainless steel mother liquor in an AOD refining converter, completing decarburization, chromium preservation and component adjustment through a process control model, and obtaining liquid stainless steel; and (4) transferring the liquid stainless steel into an LF ladle refining furnace, and carrying out continuous casting after slagging and desulfurization. The economic chromium-manganese stainless steel smelting production method is high in element yield, low in investment and operation cost, and capable of saving energy, reducing emission, and meeting the sustainable development concept.

Description

technical field [0001] The invention belongs to the technical field of stainless steel smelting, and relates to an economical chromium-manganese stainless steel smelting production method and a system thereof. Background technique [0002] In 2016, my country's crude stainless steel production reached 24.9378 million tons, accounting for 54.45% of the world's crude stainless steel production, a record high. Among them, the output of chromium-manganese stainless steel (200 series Cr-Mn steel) reached 7.3179 million tons, accounting for 29.34% of my country's stainless steel production, second only to 300 series stainless steel (chromium-nickel series). [0003] The chemical composition of the main grades of 200 series stainless steel is shown in Table 1. It is used in building decoration (building components, decorative parts), plate / pipe products, guardrails, kitchen utensils, sanitary equipment and appliances, household appliances components and shells, transportation and i...

Claims

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Application Information

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IPC IPC(8): C22C33/06C21C7/068C21C7/064C22C38/58
CPCC22C33/06C21C5/005C21C7/0685C21C7/064C22C38/58Y02P10/20
Inventor 樊君陈圣鹏石红勇冀中年
Owner BERIS ENG & RES CORP
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