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Process of producing iron alloy with low carbon and manganese

A production process and ferroalloy technology, which is applied in the field of low-micro-carbon ferromanganese alloy production process, can solve the problems of high power consumption, poor production environment, and low manganese yield, and achieve low production power consumption, reduced production cost, and high production efficiency. good environment effect

Inactive Publication Date: 2007-08-15
HUNAN LIANZHI METALLURGY NEW MATERIAL
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  • Summary
  • Abstract
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AI Technical Summary

Problems solved by technology

[0002] At present, there are three production processes for low-micro-carbon ferromanganese alloys. The first one is smelted by raw ore, which is not only limited by mineral resources, but also requires two submerged arc furnaces for double production, and the mixed flushing needs to be carried out many times. Low, poor production environment, serious pollution, high power consumption, high production cost, large amount of slag produced, high content of manganese trioxide in the slag, this process is restricted by the national industrial policy; the second is the electrolysis method Production, this method has complicated process, serious pollution, high energy consumption, high cost, and is also restricted by the national industrial policy

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] The production process of micro-carbon ferromanganese alloy:

Embodiment

[0015] Production of micro-carbon ferromanganese alloy:

[0016] 1) Weigh 1100Kg of high-carbon ferromanganese and put it into a 1000Kg intermediate frequency induction furnace, melt it, raise the temperature to above 1600°C, and pour it into the tank;

[0017] 2) Move the tank containing the high-carbon ferromanganese melt into the blowing station of the LAVOD furnace, install a dust cover on the mouth of the tank, turn on the bag dust removal fan, insert a Laval type oxygen spray gun into the tank to blow oxygen, and the oxygen gun 400-800mm away from the liquid surface, connect the argon pipe from the bottom of the tank to blow argon, and the flow rate of the argon blowing is controlled at 50 liters / minute; Raise to 0.8mPa for blowing, add 150-300Kg of lime at the same time, observe the flame at the mouth of the tank, and continue blowing for 5 minutes after the flame shrinks;

[0018] 3) Take out the oxygen lance, insert the Laval-type argon-spraying oxygen lance into the...

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PUM

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Abstract

The invention discloses a preparing craft of low-micro carbon manganese-iron alloy, which comprises the following steps: 1) loading high carbon manganese-iron into medium-frequency induction furnace; melting; heating-up at above 1600 deg.c; pouring into tank; 2) transferring the tank to station; air refining; 3) taking-up oxygen gun; inserting argon oxygen gun into solution liquid level 300-400mm of tank; setting the discharge of oxygen at 300-500 L / min; blowing at 3-8 min with argon oxygen ratio at 1 : 3; blowing at 3-8 min with argon oxygen ratio at 1 : 2; blowing at 3-8 min with argon oxygen ratio at 1 : 1; adding into silicon iron; 4) hanging the tank to casting position; casting; getting the product. The good effect of this invention is: simple producing craft; high productive efficiency; low power; good environment; low cost.

Description

technical field [0001] The invention relates to a production process of a low-microcarbon ferromanganese alloy. Background technique [0002] At present, there are three production processes for low-micro-carbon ferromanganese alloys. The first one is smelted by raw ore, which is not only limited by mineral resources, but also requires two submerged arc furnaces for double production, and the mixed flushing needs to be carried out many times. Low, poor production environment, serious pollution, high power consumption, high production cost, large amount of slag produced, high content of manganese trioxide in the slag, this process is restricted by the national industrial policy; the second is the electrolysis method Production, this method has complex process, serious pollution, high energy consumption, high cost, and is also restricted by national industrial policies. Contents of the invention [0003] The purpose of the present invention is to provide a production proces...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C33/04C21C7/072C21C7/10
Inventor 刘巍
Owner HUNAN LIANZHI METALLURGY NEW MATERIAL