Method for smelting silicon manganese alloy through microwaves

A silicon-manganese alloy and microwave technology is applied in the field of microwave smelting silicon-manganese alloy, which can solve the problems of high volatilization rate and slag rate of manganese and silicon, poor control of furnace conditions, low silicon content in the furnace, etc. The effect of speeding up the restoration and increasing the contact area

Active Publication Date: 2017-08-11
陕西盛华冶化有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the process of adding ferrosilicon has solved some difficulties, there are still disadvantages such as low silicon content

Method used

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  • Method for smelting silicon manganese alloy through microwaves
  • Method for smelting silicon manganese alloy through microwaves

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041]A method for microwave smelting silicon-manganese alloys, comprising the following steps:

[0042] Step S10, putting manganese-containing raw materials into a microwave smelting furnace for smelting to obtain a liquid manganese mixture. Specifically:

[0043] Step S101, first crushing the manganese-containing raw materials, the processed manganese raw materials include manganese ore and manganese-rich slag, and screening to find out that the manganese-containing raw materials to be smelted have a particle diameter of 30 mm; take 130 kg of the manganese-containing ore after screening, Slag 80kg;

[0044] Step S102, put 130 kg of manganese ore and 80 kg of manganese-rich slag into the microwave smelting furnace, close the door of the microwave smelting furnace, and then start the motor, which drives the body of the microwave smelting furnace to rotate. After 15 minutes of rotation, the manganese ore and manganese-rich slag After the slag is fully mixed, start the microwav...

Embodiment 2

[0053] A method for microwave smelting silicon-manganese alloys, comprising the following steps:

[0054] Step S10, putting manganese-containing raw materials into a microwave smelting furnace for smelting to obtain a liquid manganese mixture. Specifically:

[0055] Step S101, first crushing manganese-containing raw materials, the processed manganese raw materials include manganese ore, manganese-rich slag and marble, and screening, screening out the manganese-containing raw materials to be smelted with a particle diameter of 40mm; take the manganese ore after screening 140kg, manganese-rich slag 130kg, marble 10kg;

[0056] Step S102, put 150kg of manganese ore, 130kg of manganese-rich slag and 10kg of marble into the microwave smelting furnace, close the door of the microwave smelting furnace, and then start the motor, which drives the furnace body of the microwave smelting furnace to rotate for 18 minutes. After the manganese ore and manganese-rich slag are fully mixed, th...

Embodiment 3

[0065] A method for microwave smelting silicon-manganese alloys, comprising the following steps:

[0066] Step S10, putting manganese-containing raw materials into a microwave smelting furnace for smelting to obtain a liquid manganese mixture. Specifically:

[0067] Step S101, first crushing manganese-containing raw materials, the processed manganese raw materials include manganese ore, manganese-rich slag and marble, and screening, screening out the particle diameter of manganese-containing raw materials to be smelted is 50 mm; take the manganese ore after screening 150kg, manganese-rich slag 150kg, marble 12kg;

[0068] Step S102, put 150kg of manganese ore, 150kg of manganese-rich slag and 12kg of marble into the microwave smelting furnace, close the door of the microwave smelting furnace, and then start the motor, which drives the furnace body of the microwave smelting furnace to rotate for 18 minutes. After the manganese ore and manganese-rich slag are fully mixed, the m...

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Abstract

The invention relates to a method for smelting silicon manganese alloy through microwaves. The method comprises the following steps that 10, a raw material containing manganese is placed into a microwave smelting furnace to be smelted to obtain a liquid manganese mixture; 20, a raw material containing silicon is placed into the microwave smelting furnace to be smelted to obtain a liquid silicon mixture; and 30, the liquid manganese mixture obtained after smelting is carried out in the step 10 and the liquid silicon mixture generated in the step 20 are mixed and remolten to obtain the silicon manganese alloy. The microwave smelting furnace is adopted for carrying out smelting, the smelting furnace can rotate automatically, the smelted raw materials in a furnace body are heated uniformly, the chemical reaction rate in the furnace is increased, the smelting speed is increased, the smelting cost is saved, and furnace interior heat transfer and mass transfer speed is increased. The reduction speed in the furnace is increased, the reactions are active, the three reactions can also generate silicon dioxide particles with the large specific area, and in the process of being affected with coke, the contact area is increased, which is beneficial for reducing silicon.

Description

technical field [0001] The invention belongs to the field of microwave smelting, in particular to a method for microwave smelting silicon-manganese alloys. Background technique [0002] In the prior art, when smelting high-silicon-silicon-manganese alloys, the chemical process performed in the high-temperature molten pool of silicon-manganese alloys [0003] There are many reactions and the process is more complicated. The following reactions are mainly analyzed: [0004] SiO2+2C=Si+2CO (1) T=1660℃ [0005] MnO+C=Mn+CO (2) T=1404℃ [0006] FeO+C=Fe+CO (3) T=712℃ [0007] The above three reduction reactions are all endothermic reactions, and the initial reduction reaction temperature of manganese and silicon is relatively high. Due to the difference in the initial reduction temperature, the smelting process of silicon-manganese alloy is essentially that iron and manganese are first reduced in the smelting raw materials to generate MnC similar to high-carbon ferromanganese...

Claims

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Application Information

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IPC IPC(8): C22B47/00C22B5/10C22C22/00
CPCC22B5/10C22B47/00C22C22/00
Inventor 马永宁庞建明魏新华
Owner 陕西盛华冶化有限公司
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