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Molybdenum oxide direct alloying process

A molybdenum oxide and alloying technology, which is applied in the field of alloy steel smelting in iron and steel smelting, can solve the problems of unsatisfactory, slow down the production rhythm, increase the time for loading materials, etc., achieve high absorption rate of molybdenum element, simple process operation, reduce The effect of smelting cost

Pending Publication Date: 2022-04-22
ANYANG IRON & STEEL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The existing molybdenum oxide alloying process has certain disadvantages in use. When the existing molybdenum oxide alloying process is in use, the molybdenum oxide furnace bottom pavement method needs to delay the oxygen blowing time compared with normal production, resulting in The smelting time is prolonged, and the loading method before smelting will increase the material loading time and slow down the production rhythm, which is not conducive to the efficient production of enterprises and cannot meet people's needs. Therefore, we propose a direct alloying process of molybdenum oxide

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  • Molybdenum oxide direct alloying process

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Embodiment 1

[0034] refer to figure 1 Shown, a kind of molybdenum oxide direct alloying process, processing technology comprises the following steps:

[0035] 1) Preparation of molybdenum oxide mixture: mixing molybdenum oxide and lime in proportion to obtain molybdenum oxide mixture;

[0036] 2) Feeding: Send the molybdenum oxide mixture to the designated area;

[0037] 3) Calculate the addition amount: calculate the addition amount of the molybdenum oxide mixture according to the formula;

[0038] 4) Alloy ingredients: add molybdenum oxide mixture into molten steel from the silo;

[0039] 5) Converter smelting: smelting;

[0040] 6) Tapping alloying: the alloy is added to the ladle for tapping.

[0041] 7) Calculate the absorption rate of molybdenum: calculate the absorption rate of molybdenum according to the formula.

[0042] The composition of the molybdenum oxide alloy used: the equivalent metal Mo content is 53.2%, and the balance is impurity elements.

[0043] Steel compositi...

Embodiment 2

[0062] refer to figure 1 Shown, a kind of molybdenum oxide direct alloying process, processing technology comprises the following steps:

[0063] 1) Preparation of molybdenum oxide mixture: mixing molybdenum oxide and lime in proportion to obtain molybdenum oxide mixture;

[0064] 2) Feeding: Send the molybdenum oxide mixture to the designated area;

[0065] 3) Calculate the addition amount: calculate the addition amount of the molybdenum oxide mixture according to the formula;

[0066] 4) Alloy ingredients: add molybdenum oxide mixture into molten steel from the silo;

[0067] 5) Converter smelting: smelting;

[0068] 6) Tapping alloying: the alloy is added to the ladle for tapping.

[0069] 7) Calculate the absorption rate of molybdenum: calculate the absorption rate of molybdenum according to the formula.

[0070] The composition of the molybdenum oxide alloy used: the equivalent metal Mo content is 56.6%, and the balance is impurity elements.

[0071] Steel compositi...

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Abstract

The invention discloses a molybdenum oxide direct alloying process which is characterized by comprising the following steps: preparing molybdenum oxide into a molybdenum oxide mixture, smelting molybdenum-containing steel according to conventional smelting steps, and adding the molybdenum oxide mixture into molten steel from a stock bin when the tapping amount is about 1 / 5 after converter smelting is finished until the tapping amount is 4 / 5. The molybdenum oxide mixture is added in the tapping process, and compared with a molybdenum oxide furnace bottom paving method, a before-smelting loading method and other technologies, additional material adding time is not needed, the steelmaking process time is not increased, the production rhythm is not affected, and the efficient production requirement of enterprises is met; and meanwhile, molybdenum oxide reduction can be completed by utilizing components such as carbon, manganese and iron contained in converter tapping molten steel, rapid reduction of molybdenum oxide is achieved by utilizing good tapping stirring conditions, and the molybdenum element yield is high.

Description

technical field [0001] The invention relates to the technical field of alloy steel smelting in iron and steel smelting, in particular to a direct alloying process of molybdenum oxide. Background technique [0002] Since the 1980s, my country has begun to study the use of molybdenum oxide to smelt alloy steel. After a lot of research and practice, it is known that when molybdenum is added as an alloying element, the strength, toughness, and wear resistance of the steel can be improved according to different processes. And many properties such as corrosion resistance, are widely used in the production and manufacture of stainless steel, alloy steel, high-speed steel and tool steel and other steel types by various iron and steel enterprises. [0003] At present, the molybdenum oxide alloying process has the following types: one method is the molybdenum oxide furnace bottom pavement method, and the other is the pre-smelting charging method. [0004] The existing molybdenum oxide...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21C7/00C21C5/28C22C33/06
CPCC21C7/0006C22C33/06C21C7/0037C21C5/28
Inventor 程官江于银俊商存亮赵祥梅张振申贺瑞飞张全刚赵兴通蔺学浩杨杰关漫漫田云生刘磊李文山
Owner ANYANG IRON & STEEL