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Mn-Fe alloy production process

A ferromanganese alloy and production method technology, which is applied in the field of C22C22/00 or C22C1/02, can solve the problems of long process flow, large floor area, and long production cycle, and achieve strong resource adaptability and reduced floor space , The effect of improving production efficiency

Inactive Publication Date: 2007-03-14
湖南华菱涟源钢铁有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above three ferromanganese alloy production processes are mature, but there are the following problems: (1) The process is long, the environment is seriously polluted, and the cost is high. Generally, the raw manganese ore needs to be beneficiated and sintered to improve the grade of manganese ore, and then smelted in a blast furnace or an electric furnace; (2) The blast furnace process has high requirements on the quality of manganese ore, and the variety is single, while the submerged arc furnace method produces manganese ferroalloy, which consumes a lot of power and costs more, which is subject to the power supply situation
(3) The equipment investment of the above two processes is large, the floor area is large, the production management is complicated, the production cycle is long, and the production efficiency is low

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Compound manganese alloy pellets are prepared with (% by weight) aluminum=10, silicon carbide=5, activated carbon=2, resin=5, and the balance of manganese oxide (the total content of each component is 100%). The composite manganese alloy pellets are melted by the cupola into a liquid manganese-containing slag, transferred to the induction furnace, and the conductive electrode is inserted into the induction furnace molten pool from the top of the induction furnace molten pool, and the induction furnace is added to the induction furnace in the early stage of production. % By weight) carbon=8, silicon dioxide=15, silicon=5, magnesium oxide=10, magnesium=2, barium oxide=10, barium=2, aluminum=6 and the balance is calcium oxide (the content of each component And 100%) conductive slag mixed with 25kg / t, adding reducing agent, such as 40kg / t silicon, while adding 40kg / t iron ore into the induction furnace, adding 5kg / t scrap steel, in the induction furnace induction coil And the c...

Embodiment 2

[0024] Compound manganese alloy pellets are prepared with (weight %) silicon = 16, aluminum = 1, activated carbon = 5, pitch = 12 and the balance of manganese sinter (the sum of the content of each component is 100%). The composite manganese alloy pellets are melted by the cupola into a liquid manganese-containing slag, transferred to the induction furnace, and the conductive electrode is inserted into the induction furnace molten pool from the top of the induction furnace molten pool, and the induction furnace is added to the induction furnace in the early stage of production. % By weight) carbon = 1, silica = 25, silicon = 2, magnesium oxide = 3, magnesium = 10, barium oxide = 25, barium = 5, aluminum = 0 and the balance is calcium oxide (the content of each component And 100%) of conductive slag mixed with 5kg / t, add reducing agent, such as calcium 25kg / t, at the same time add 25kg / t iron ore into the induction furnace, add 20kg / t scrap steel, in the induction furnace induction...

Embodiment 3

[0026] Compound manganese alloy pellets are prepared with (% by weight) calcium=2, ferrosilicon=8, activated carbon=0, water glass=8 and the balance of manganese carbonate (the sum of the content of each component is 100%). The composite manganese alloy pellets are melted by the cupola into a liquid manganese-containing slag, transferred into the induction furnace, and the conductive electrode is inserted into the induction furnace molten pool from the top of the induction furnace molten pool, and the induction furnace is added to the induction furnace in the middle of production. % By weight) carbon=15, silicon dioxide=5, silicon=12, magnesium oxide=15, magnesium=6, barium oxide=18, barium=8, aluminum=8 and the balance is calcium oxide (the content of each component And 100%) conductive molten slag 35kg / t, add reducing agent, such as aluminum 5kg / t, at the same time add iron ore 5kg / t into the induction furnace, add 30kg / t scrap steel, in the induction furnace induction coil And ...

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Abstract

The present invention discloses production process of ferromanganese alloy for smelting steel and casting machine. The production process includes the following steps: crushing and grinding manganese ore with manganese content higher than 20 wt%, reductant, heat generating agent and catalyst separately, and mixing in certain proportion while adding adhesive to prepare manganese ore pellet; melting in a cupola into molten manganese-slag material; and smelting the molten manganese-slag material while adding conducting slag, iron ore and waste steel in an induction furnace heated with induction coil and conducting electrodes to obtain ferromanganese alloy as one kind of intermetallic compound. The production process has low power consumption, less environmental pollution and high production efficiency.

Description

Technical field [0001] The invention relates to a ferromanganese alloy production method used in the metallurgical steelmaking and mechanical casting industries, belonging to the C22C22 / 00 category or the C22C1 / 02 category. Background technique [0002] At present, in the process of metallurgical steelmaking or ferromanganese alloy production process for manganese element alloying, manganese-containing ferroalloys such as ferromanganese (Fe-Mn) and ferrosilicon manganese (Si-Fe-Mn) are generally used. Manganese alloying is carried out in the case of steel. There are three main types of ferromanganese alloy production processes: one is to use sintering blast furnace process (blast furnace ferromanganese); the other is to use sintered submerged arc furnace (electric furnace) process (electric furnace ferromanganese), and the third is to sinter blast furnace (rich ferromanganese). Manganese slag) adding submerged arc furnace process (silico-manganese alloy). The above-mentioned thre...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C22/00C22C1/02
Inventor 吴光亮
Owner 湖南华菱涟源钢铁有限公司
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