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Production of low carbon manganesium iron in medium frequency induction furnace by remelting process

An intermediate frequency furnace and ferroalloy technology, applied in the field of low-carbon manganese ferroalloy production, can solve the problems of unfavorable environmental protection, large investment, easy carbon increase, etc., and achieve the effect of easy process control and low investment.

Inactive Publication Date: 2005-02-23
宁结算
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This process requires large equipment investment, high power consumption, shortage of manganese ore resources and high price, so the product cost is high, the pollution produced is relatively large, and it is not good for environmental protection.
It uses graphite electrodes, which are easy to increase carbon during the smelting process in the furnace, and it is difficult to produce low-carbon ferromanganese with carbon content ≤ 0.2%.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0010] Embodiment 1, utilize intermediate frequency furnace to produce low-carbon ferromanganese alloy (as FeMn85C 0.2 ):

[0011] a. Put the metal manganese into the intermediate frequency furnace, and melt it into a liquid state when it is energized;

[0012] b. After adding steel scrap into the manganese metal solution to dissolve, remove the slag; the amount of steel scrap added is 8-18% of the mass of manganese metal.

[0013] c. After the alloy solution in the ladle is cooled to a solid state, the alloy block is hoisted out and crushed to form the block shape required by the customer. The outlet temperature of the alloy in the intermediate frequency furnace is controlled at 1400-1600°C.

Embodiment 2

[0014] Embodiment 2, utilize intermediate frequency furnace to produce low-carbon ferromanganese alloy (as FeMn80C 0.4 , FeMn84C 0.3 ):

[0015] a. Put the metal manganese into the intermediate frequency furnace, and melt it into a liquid state when it is energized;

[0016] B, after adding steel scrap to melt in the manganese metal solution, remove the slag; the addition of steel scrap is 5-25% of the manganese metal quality,

[0017] c, add silico-manganese in the steel ladle, pour the alloy solution in the intermediate frequency furnace into the ladle to melt the silico-manganese; the addition of the silico-manganese alloy is 5-15% of the metal manganese quality, and the silicon-manganese alloy contains silicon of 17%, containing 65% manganese.

[0018] d. After the alloy solution in the ladle is cooled to a solid state, the alloy block is hoisted out and crushed to form the block shape required by the customer. The outlet temperature of the alloy in the intermediate fr...

Embodiment 3

[0019] Embodiment 3, utilize intermediate frequency furnace to produce low-carbon ferromanganese alloy (as FeMn80C 0.7 ):

[0020] a. Put the metal manganese into the intermediate frequency furnace, and melt it into a liquid state when it is energized;

[0021] b. After adding steel scrap into the manganese metal solution to dissolve, remove the slag; the amount of steel scrap added is 10-28% of the mass of manganese metal.

[0022] c, add silico-manganese in the ladle, pour the alloy solution in the intermediate frequency furnace into the ladle to melt the silico-manganese; the addition of the silico-manganese alloy is 5-20% of the metal manganese quality, and the silicon-manganese alloy contains silicon of 17%, containing 65% manganese.

[0023] d. After the alloy solution in the ladle is cooled to a solid state, the alloy block is hoisted out and crushed to form the block shape required by the customer. The outlet temperature of the alloy in the intermediate frequency fu...

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Abstract

A method for manufacturing low-carbon manganese iron alloy by medium-frequency furnace remelting includes: throwing manganese into medium-frequency furnace, electrofusing liquid, adding manganese solution into steel scrap and smelting with adding amount 5-30wt% of manganese, removing slag, cooling alloy solution in steel ladle, breaking alloy block, and forming require bulk. Its advantages include low cost, simple process and high output.

Description

technical field [0001] The invention relates to a method for producing low-carbon ferromanganese alloy by remelting in an intermediate frequency furnace. Background technique [0002] At present, the production of low-carbon ferromanganese alloy is usually smelted by high-silicon manganese alloy and imported manganese ore in the refining electric arc furnace under high alkalinity conditions. This process requires large equipment investment, high power consumption, shortage of manganese ore resources and high price, so the product cost is high, the pollution produced is relatively large, and it is not good for environmental protection. It uses graphite electrodes, which are easy to add carbon during the smelting process in the furnace, and it is difficult to produce low-carbon ferromanganese with a carbon content of ≤0.2%. Contents of the invention [0003] The purpose of the present invention is to provide a method for producing low-carbon ferromanganese alloy by remeltin...

Claims

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Application Information

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IPC IPC(8): C22C33/04C22C35/00
Inventor 宁结算
Owner 宁结算
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