Device for continuously producing molten steel by performing microwave and induction heating on carbon-containing pellets

An induction heating and electromagnetic induction heating technology, applied in the field of iron and steel metallurgy, can solve the problems of low production efficiency and energy utilization rate, poor gas permeability in the furnace, complicated process flow, etc., to improve gas permeability, reduce reduction, and facilitate slag iron melting. the effect of points

Active Publication Date: 2016-07-13
ANHUI UNIVERSITY OF TECHNOLOGY
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Problems solved by technology

[0010] The purpose of the present invention is to overcome the deficiencies in the existing direct steelmaking process, which are prone to slag foaming, poor gas permeability in the furnace, long production cycle, low production efficiency and energy utilization rate, large environmental pollution and complicated process flow, and provide a Continuous production of molten steel by microwave and induction heating of carbonaceous pellets

Method used

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  • Device for continuously producing molten steel by performing microwave and induction heating on carbon-containing pellets
  • Device for continuously producing molten steel by performing microwave and induction heating on carbon-containing pellets

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Effect test

Embodiment 1

[0038] Such as figure 1 As shown, a device for continuous production of molten steel by microwave and induction heating carbon-containing pellets in this embodiment includes a steelmaking furnace body, and the steelmaking furnace body includes an upper microwave reduction furnace 2 and a lower induction melting furnace 7 , the microwave reduction furnace 2 is used for heating and reducing the carbon-containing pellets, the induction melting furnace 7 is used for the slag iron melting reaction, and the microwave reduction furnace 2 and the induction melting furnace 7 are connected through the discharge valve 6 , the complete isolation of the carbon-containing pellet reduction and slag-iron melting reaction is realized, and the reduction reaction basically does not occur in the induction melting furnace 7, thereby preventing the CO gas generated by the reduction of carbon-containing pellets from affecting the slag, and avoiding the slag containing When the carbon pellets are red...

Embodiment 2

[0059] A kind of microwave and induction heating carbon-containing pellet continuous production molten steel device of this embodiment is basically the same as embodiment 1, and its difference lies in the following aspects: the number of microwave reduction furnace 2 is 3 in the present embodiment, thereby can significantly Improve production efficiency and production capacity, overcome the disadvantage that when only one microwave reduction furnace 2 is installed, the production progress is greatly affected by the fluctuation of the working state of the microwave reduction furnace 2, and when the input amount of carbon-containing pellets is the same, by setting multiple The microwave reduction furnace 2 can further ensure sufficient reduction inside the carbon-containing pellets, which is beneficial to improving the reduction rate and reduction efficiency of the carbon-containing pellets.

[0060] There are 3 rows of microwave heating devices in this embodiment, and an upper r...

Embodiment 3

[0075] A kind of microwave and induction heating carbon-containing pellet continuous production molten steel device of this embodiment is basically the same as embodiment 2, and its difference lies in the following aspects: the number of microwave reduction furnace 2 is 2 in the present embodiment; There are a plurality of air guide pipes 4, all of which are evenly distributed along the axial direction parallel to the microwave reduction furnace 2, so as to further ensure uniform heating of the inside of the carbon-containing pellets and ensure sufficient and complete reduction.

[0076] The method for continuous production of molten steel by microwave and induction heating of carbon-containing pellets in this embodiment comprises the following steps:

[0077] Step 1. Loading and preheating of carbon-containing pellets:

[0078] The carbon-containing pellets are transported to the distribution device 1 through the belt feeder outside the furnace body, and the carbon-containing...

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Abstract

The invention discloses a device for continuously producing molten steel by performing microwave and induction heating on carbon-containing pellets, and belongs to the technical field of iron and steel metallurgy. The device for continuously producing the molten steel by performing microwave and induction heating on the carbon-containing pellets disclosed by the invention comprises a steel refining furnace body; the steel refining furnace body comprises an upper microwave reducing furnace and a lower induction smelting separating furnace; the microwave reducing furnace is used for heating and reducing the carbon-containing pellets; the induction smelting separating furnace is used for performing an iron slag smelting separating reaction; the microwave reducing furnace is communicated with the induction smelting separating furnace through a material discharging valve. By adoption of the technical scheme of the invention, the problems of furnace slag foaming, insufficient reduction of the carbon-containing pellets, and low metallization ratio in the existing steel smelting process can be effectively solved, and the quality of the finally obtained molten steel is ensured.

Description

technical field [0001] The invention belongs to the technical field of iron and steel metallurgy, and more specifically relates to a device for continuously producing molten steel by microwave and induction heating carbon-containing pellets. Background technique [0002] The traditional long-process iron and steel production process is mainly from coke oven coking, sintering (or pelletizing), blast furnace ironmaking to converter steelmaking. The entire process requires large investment and high energy consumption, and the greenhouse gas CO 2 It is difficult to effectively reduce the emissions. Blast furnace ironmaking is inseparable from coke. With the increasing shortage of coking coal for coking and the increasing pressure on environmental protection, it is of great strategic significance to cancel coke oven coking-sintering-blast furnace ironmaking and other processes to realize direct steelmaking from ore and coal , is the goal pursued by metallurgists. [0003] The d...

Claims

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Application Information

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IPC IPC(8): C21B13/14
CPCC21B13/14
Inventor 杨佳龙李家新郭其飞杨建张春雷陈小龙相冬文贾晓颖杨乐彪佘文文孟庆民狄瞻霞
Owner ANHUI UNIVERSITY OF TECHNOLOGY
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