CN201138141Y

CN201138141Y - Melting electric stove with material placed on multiple points outside electrode

Info

Publication number: CN201138141Y
Application number: CNU2007200164666U
Authority: CN
Inventors: 何艳霞; ***; 张彦萍
Original assignee: Dalian Huarui Co Ltd
Current assignee: Dalian Huarui Heavy Industry Group Co Ltd
Priority date: 2007-12-05
Filing date: 2007-12-05
Publication date: 2008-10-22
Anticipated expiration: 2017-12-05

Abstract

The utility model provides a smelting device, in particular relating to a melting electric furnace for multipoint distribution along the lateral side of the electrode, consisting of a furnace body, a furnace cover, an electrode, a charge pipe with a feed nozzle, and a storage hopper. The utility model is characterized in that a plurality of feed ports are distributed on the top surface of the furnace cover above the molten pool between the lateral side of the electrode and the furnace wall, wherein, the feed ports correspond to the locations of each feed opening; a feed pipe with a feed nozzle is arranged at the top part of the furnace body, wherein, the feed nozzle of the feed pipe is communicated with the feed ports, while the other end of the feed pipe is communicated with the outlet at the bottom part of the storage hopper; the heated raw material is delivered from the storage hopper through the feed nozzle of the feed pipe, and falls into the visible arc molten pool for smelting. The angles of the feed ports are the same; the utility model not only has reasonable design and compact structure, improves the efficiency of the thermal energy and saves the energy; but also reduces the heat radiation of the furnace wall and increases the service life of the furnace wall, and has the advantages of high production efficiency and convenient use.

Description

Molten minute electric furnace along electrode outside multiple spot cloth

Technical field

The utility model belongs to smelting equipment, particularly a kind of molten minute electric furnace along electrode outside multiple spot cloth.

Background technology

At present, smelt and to smelt in the submerged arc mode with electric arc furnaces, its structure is made up of material pipe, the feed bin of body of heater, bell, electrode, charging nozzle, center on usually on each electrode bell end face on every side position with charge door be evenly arranged in this electrode around; And the burried arc furnace majority is feed stock for blast furnace with the cold burden, and mainly the resistance heat by furnace charge is main heat of reaction source.Therefore, in the production between each phase electrode and electrode around furnace charge consumption very fast relatively, cause the energy resource consumption of burried arc furnace bigger; Simultaneously, arc light is bigger to the heat radiation damage of furnace wall, influences the life-span of furnace wall.

Summary of the invention

The utility model is intended to the shortcoming and defect part that exists in above-mentioned technology, and provides not only reasonable in design, and compact conformation had both improved efficiency of utilization, energy savings; Reduce heat radiation again, increase furnace wall service life, and it is high and use a kind of very easily molten minute electric furnace along electrode outside multiple spot cloth to have production efficiency furnace wall.

The purpose of this utility model is to adopt following technical scheme to realize: described molten minute electric furnace along electrode outside multiple spot cloth, comprise body of heater, bell, electrode, the material pipe of charging nozzle, feed bin, furnace wall, it is characterized in that: along obtaining reacting several charge doors that distribute on the bell end face of top, molten bath between the electrode outside and the furnace wall, corresponding with the position of each charge door, be provided with the material pipe of charging nozzle in the body of heater top, the charging nozzle end of its material pipe is communicated with charge door and joins, the other end of material pipe is communicated with the feed bin outlet at bottom and joins, and its feed stock for blast furnace falls in the open arc reaction molten bath from the charging nozzle of feed bin through expecting pipe to be smelted.

Described charge door, the angular distance between its charge door equates; Its quantity depends on the size of body of heater external diameter, and the body of heater external diameter is big, and its quantity is just many; Otherwise its quantity is just few.

Described feed stock for blast furnace is through the hot pelletizing feed after the prereduction.

Principle of the present utility model and operation are described below: because the employed feed stock for blast furnace of the utility model is generally through the hot pelletizing feed after the prereduction, electric furnace is produced in the open arc mode, heat of reaction in the stove is mainly from arc heat, rather than the resistance heat of furnace charge, it is high that the relative submerged arc production of reaction in furnace temperature is wanted.In the open arc production status, the repulsion between the electrode is very strong, cause the circumference temp in the electrode outside higher relatively, and furnace charge consumption herein is also relatively large.Feed point is arranged in the highest zone of temperature in the stove, can improve smelting efficient; Adopt the form of multiple spot uniform distribution simultaneously, can avoid that some zone is big because of the furnace charge accumulating amount in the stove, reaction is slow, be easy to generate phenomenon such as the material accident of collapsing and take place, can avoid also that some regional material amount is little, heat scatters and disappears big phenomenon.Simultaneously, furnace charge is added between electrode and the furnace wall, also can intercept the direct radiation furnace wall of arc light that the electric furnace open arc produces, and reduces furnace wall and corrodes, and prolongs the service life of furnace wall.In a word, molten minute electric furnace of kind electrode outside multiple spot uniform distribution will improve the heat utilization efficiency in the stove greatly, enhances productivity, and saves the energy, prolongs the service life of equipment.Combine the above technical measures of being taked, realize the purpose of this utility model.

Compared with prior art, the utility model is not only reasonable in design, and compact conformation had both improved efficiency of utilization, energy savings; Reduce heat radiation again, increase furnace wall service life, and it is high and use advantages such as very convenient to have production efficiency furnace wall.

Description of drawings

The utility model has two width of cloth accompanying drawings.Wherein:

Accompanying drawing 1 is the main TV structure schematic diagram of specific embodiment of the utility model;

Accompanying drawing 2 is along the cutaway view of A-A line among Fig. 1.

Among the figure: 1, body of heater, 2, bell, 3, electrode, 4, the material pipe of charging nozzle, 5, feed bin, 6, furnace wall, 7, charge door.8, feed stock for blast furnace.

Be specific embodiment of the utility model shown in Fig. 1,2, it is the molten minute electric furnace along electrode outside multiple spot cloth of 25.5MVA; Its structure comprises material pipe 4, feed bin 5, the furnace wall 6 of body of heater 1, bell 2, electrode 3, charging nozzle, it is characterized in that: uniform 12 charge doors 7 on the outside after assembling along three electrodes 3 and top, the reaction molten bath between furnace wall bell 2 end faces, corresponding with the position of each charge door 7, be provided with the material pipe 4 of charging nozzle in body of heater 1 top, the charging nozzle end of its material pipe 4 is communicated with charge door 7 and joins, the other end of material pipe 4 is communicated with feed bin 5 outlet at bottoms and joins, and its feed stock for blast furnace 8 falls in the open arc reaction molten bath from the charging nozzle of feed bin 5 through expecting pipe 4 to be smelted.

The above; it only is the preferable specific embodiment of the present utility model; but protection domain of the present utility model is not limited thereto; all are familiar with those skilled in the art in the disclosed technical scope of the utility model, are equal to replace or change according to the technical solution of the utility model and design of the present utility model thereof all should be encompassed within the protection domain of the present utility model.

Claims

1, a kind of molten minute electric furnace along electrode outside multiple spot cloth, comprise body of heater (1), bell (2), electrode (3), the material pipe (4) of band charging nozzle, feed bin (5), furnace wall (6), it is characterized in that: along obtaining reacting several charge doors (7) that distribute on bell (2) end face of top, molten bath between electrode (3) outside and the furnace wall (6), corresponding with the position of each charge door (7), be provided with the material pipe (4) of charging nozzle in body of heater (1) top, the charging nozzle end of its material pipe (4) is communicated with charge door (7) and joins, the other end of material pipe (4) is communicated with feed bin (5) outlet at bottom and joins, and its feed stock for blast furnace falls in the open arc reaction molten bath from the charging nozzle of feed bin (5) through expecting pipe (4) to be smelted.

2, by the described molten minute electric furnace along electrode outside multiple spot cloth of claim 1, it is characterized in that: described charge door (7), the angular distance between its charge door (7) equates.

3, by the described molten minute electric furnace along electrode outside multiple spot cloth of claim 1, it is characterized in that: described feed stock for blast furnace (8) is through the hot pelletizing feed after the prereduction.