CN203602648U - Equipment for direct reduction of sponge iron by virtue of gas heating type vertical metal channel - Google Patents
Equipment for direct reduction of sponge iron by virtue of gas heating type vertical metal channel Download PDFInfo
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- CN203602648U CN203602648U CN201320809920.9U CN201320809920U CN203602648U CN 203602648 U CN203602648 U CN 203602648U CN 201320809920 U CN201320809920 U CN 201320809920U CN 203602648 U CN203602648 U CN 203602648U
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- reduction
- heater
- sponge iron
- magnetic separation
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Abstract
The utility model provides equipment for direct reduction of sponge iron by virtue of a gas heating type vertical metal channel. The equipment comprises a vertical reduction furnace body, wherein a fireproof heat preservation furnace wall is connected to the outer surface of the reduction furnace body in a sleeving manner along the height of the furnace body; a gap is formed between the fireproof heat preservation furnace wall and the outer surface of the reduction furnace body to form a gas combustion chamber; a plurality of gas combustion furnaces are arranged on the surface of the fireproof heat preservation furnace wall at intervals along the height of the furnace wall; the gas combustion furnaces are communicated with the gas combustion chamber to guide gas into the gas combustion chamber and ignite the gas in the gas combustion chamber. According to the equipment, mixtures of special iron powder agglomerates and reducer coal briquettes directly enter the furnaces so as to be reduced to generate sponge iron; by virtue of the gas heating type vertical reduction furnace body, the temperature can be accurately controlled to fully coordinate a reduction atmosphere, and highest metallization ratio, optimal product quality and highest yield can be realized with lowest energy consumption.
Description
Technical field
The utility model relates to the vertical passage direct-reduction of a kind of heated by gas metal sponge iron equipment, especially utilizes the vertical passage direct-reduction of gas maked coal heating of metal passage heated by gas metal sponge iron equipment.
Background technology
Sponge iron is to utilize refined iron mine powder and reductive agent reaction, the fe that direct-reduction obtains at the temperature lower than iron fusing point, and its shape, like sponge, is therefore sponge iron.Sponge iron has vital role in Steel industry, be smelting refined steel, the necessary starting material of special steel, but the world is zero output depending on the sponge iron output of China, and the sponge iron that China's smelting refined steel is used is mainly to obtain by import.At present, be mainly rotary kiln and tunnel furnace in the technical process of China's operation, rotary kiln technology is the main flow of China's coal base reduction.Energy consumption is higher than blast furnace ironmaking.Be interrupted production model.This is the high major cause of power consumption.Technical process is in stove, to be booked reduction retort, and on retort surrounding cloth, fire coal does ashes after a fire, is covered with iron fine powder and ature of coal reductive agent in each tank, has the aperture afterflame material on furnace roof to carry out roasting.(as the kiln of baking bricks).This flow process labour intensity is large, work under bad environment.Seriously polluted, consume energy high, unstable product quality.Major cause that rotary kiln is restricted that Here it is.
Tunnel furnace is the transformation of evolving on the basis of rotary kiln.It is that kiln has been become to a tunnel, and general tunnel total length, 180 meters of left and right, is produced 10000 tons of sponge iron per year.Wide 5 meters high 2.8 meters, tunnel.Inside be provided with haul track, retort carrier loader is housed on track, carry 2 or 4 retorts on carrier loader, within whole year, the car chain of rings gets up.A firing section, is driven by hydraulic pusher, promotes to carry car operation.Produce as operation continuously.Belong to semi-automatic Production Flow Chart.Work by force little, changed Working environment, but energy consumption is high, seriously polluted, unstable product quality.
Since last century the eighties sponge iron enter large-scale production, that produces by gas base method in the world accounts for 93%, that produces by coal-based method accounts for 7%, Sweet natural gas is the production condition of providing convenience to gas base method.And China can be by a large amount of not natural in metallurgy industry, also be impossible future that now can be of a specified duration, so the reduction of shaft furnace gas base method has been subject to restriction in China, China's shaft furnace production technique is in the development research stage, and its developing direction is mainly gas maked coal production technique.
Utility model content
In order to solve the problems of the technologies described above, the main technical solution problem of the utility model provides a kind of employing gas maked coal method, the vertical passage that utilizes heated by gas refractory metal pipe to form, can accurately control temperature and temperature distribution, eliminate reduction furnace charge flow-stopping clip zoning, improve heat energy mass transfer velocity, strengthen furnace reduction atmosphere, reduce furnace inner gas pressure, enhance productivity, the vertical passage direct-reduction of the heated by gas metal sponge iron equipment of energy-conserving and environment-protective.
The utility model proposes the vertical passage direct-reduction of a kind of heated by gas metal sponge iron equipment, it is characterized in that, comprise the reduction body of heater of vertical setting, described reduction furnace external surface is socketed with fire resistant heat preserving furnace wall along body of heater height, between described fire resistant heat preserving furnace wall and reduction furnace external surface, leave gap to form gas burner, surface, described fire resistant heat preserving furnace wall is provided with several gas fired furnaces along its vertical separation, described gas fired furnace and gas burner's conducting are to carry out coal gas importing to gas-fired is indoor, and coal gas indoor gas-fired is lighted, upper end, described gas burner is provided with exhaust emission device, described reduction body of heater upper end is provided with device for recovering tail gas and feed hopper, in described reduction body of heater, be highly provided with the conveying auger of rotary setting along it, described reduction body of heater lower end connects dowtherm boiler, described dowtherm boiler lower end connects discharging automatic sorting device.
Preferential as technique scheme, described dowtherm boiler comprises body of heater and is positioned at the heat dissipation channel of body of heater, described heat dissipation channel and the conducting of reduction body of heater, described conveying auger extends in heat dissipation channel, in chamber between described inboard wall of furnace body and heat dissipation channel, be provided with radiator element, described chamber has water-in and steam outlet.
Preferential as technique scheme, described discharging automatic sorting device comprises device body, described device body bottom is provided with slag notch and iron notch, described slag notch and iron notch top are provided with magnetic separation roller, described magnetic separation roller is positioned at the discharge port bottom of heat dissipation channel, and described magnetic separation roller one side is provided with driving wheel, and described driving wheel and magnetic separation roller are in transmission connection by travelling belt, to drive the rotation of magnetic separation roller, described magnetic separation roller bottom is provided with sorting dividing plate.
Preferential as technique scheme, the conveying auger of described rotary setting connects programmable logic controller, to drive and to control auger rotating speed.
Preferential as technique scheme, described fire resistant heat preserving furnace wall inwall is provided with several projections.
The beneficial effect that the technical scheme that the utility model embodiment provides is brought is:
The utility model proposes the vertical passage direct-reduction of a kind of heated by gas metal sponge iron equipment, is by special iron fine powder piece and the mixed raw material of reductive agent coal cinder, produces sponge iron directly into stove reduction; The reduction body of heater vertically arranging by heated by gas, can accurately control temperature and fully coordinate reducing atmosphere, and utilizes degree of metalization and optimum quality product and production peak that minimum energy consumption output is the highest.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme in the utility model embodiment, below the accompanying drawing of required use during embodiment is described is briefly described, apparently, accompanying drawing in the following describes is only embodiment more of the present utility model, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1: the vertical passage direct-reduction of the heated by gas metal sponge iron device structure schematic diagram providing in the utility model embodiment;
Sequence number 1 is spiral pushing device;
Sequence number 2 is hoppers;
Sequence number 3 is device for recovering tail gas;
Sequence number 4 is exhaust emission devices;
Sequence number 5 conveying augers;
Sequence number 6 is reduction bodies of heater;
Sequence number 7 is gas burners;
Sequence number 8 is fire resistant heat preserving furnace walls;
Sequence number 9 is gas fired furnaces;
Sequence number 10 is gas inlets;
Sequence number 11 is gas fired furnaces;
Sequence number 25 is air distribution imports;
Embodiment
For making the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with accompanying drawing, the utility model embodiment is described in further detail.
The utility model proposes the vertical passage direct-reduction of a kind of heated by gas metal sponge iron equipment, as shown in Figure 1, comprise the reduction body of heater of vertical setting, described reduction furnace external surface is socketed with fire resistant heat preserving furnace wall along body of heater height, between described fire resistant heat preserving furnace wall and reduction furnace external surface, leave gap to form gas burner, surface, described fire resistant heat preserving furnace wall is provided with several gas fired furnaces along its vertical separation, described gas fired furnace and gas burner's conducting are to carry out coal gas importing to gas-fired is indoor, and coal gas indoor gas-fired is lighted, upper end, described gas burner is provided with exhaust emission device, described reduction body of heater upper end is provided with device for recovering tail gas and feed hopper, in described reduction body of heater, be highly provided with the conveying auger of rotary setting along it, conveying auger comprises spiral pushing device, described reduction body of heater lower end connects dowtherm boiler, described dowtherm boiler lower end connects discharging automatic sorting device.
Described dowtherm boiler comprises body of heater and is positioned at the heat dissipation channel of body of heater, described heat dissipation channel and the conducting of reduction body of heater, described conveying auger extends in heat dissipation channel, in the chamber between described inboard wall of furnace body and heat dissipation channel, is provided with radiator element, and described chamber has water-in and steam outlet.
Described discharging automatic sorting device comprises device body, described device body bottom is provided with slag notch and iron notch, described slag notch and iron notch top are provided with magnetic separation roller, described magnetic separation roller is positioned at the discharge port bottom of heat dissipation channel, described magnetic separation roller one side is provided with driving wheel, described driving wheel and magnetic separation roller are in transmission connection by travelling belt, and to drive the rotation of magnetic separation roller, described magnetic separation roller bottom is provided with sorting dividing plate.
The conveying auger of described rotary setting connects programmable logic controller, to drive and to control auger rotating speed.
Described fire resistant heat preserving furnace wall inwall is provided with several projections.
When use, raw material enters reduction body of heater by hopper, gas burner's heat reduction body of heater, the velocity of flow of conveying auger control raw material in reduction body of heater, raw material self gravitation and auger spiral angle can force shaftless screw to rotate, reduction tail gas is communicated with gas wash tower by device for recovering tail gas, and the radiator element of dowtherm boiler and water absorb heat generation water vapor discharges, and reduces sponge iron temperature; Be positioned at passage below discharge port reduction furnace charge concentration equipment is housed; Cooled reduction furnace charge is descending to be entered and reduces passage and be connected discharging automatic sorting device, de-iron block sucking-off magnetic is fallen into outlet and discharge, and another outlet that falls into of not inhaling is discharged.
Finally it should be noted that: above embodiment only, in order to the technical solution of the utility model to be described, is not intended to limit; Although the utility model is had been described in detail with reference to previous embodiment, those of ordinary skill in the art is to be understood that: its technical scheme that still can record aforementioned each embodiment is modified, or part technical characterictic is wherein equal to replacement; And these modifications or replacement do not make the essence of appropriate technical solution depart from the spirit and scope of the each embodiment technical scheme of the utility model.
Claims (5)
1. the vertical passage direct-reduction of a heated by gas metal sponge iron equipment, it is characterized in that, comprise the reduction body of heater of vertical setting, described reduction furnace external surface is socketed with fire resistant heat preserving furnace wall along body of heater height, between described fire resistant heat preserving furnace wall and reduction furnace external surface, leave gap to form gas burner, surface, described fire resistant heat preserving furnace wall is provided with several gas fired furnaces along its vertical separation, described gas fired furnace and gas burner's conducting are to carry out coal gas importing to gas-fired is indoor, and coal gas indoor gas-fired is lighted, upper end, described gas burner is provided with exhaust emission device, described reduction body of heater upper end is provided with device for recovering tail gas and feed hopper, in described reduction body of heater, be highly provided with the conveying auger of rotary setting along it, described reduction body of heater lower end connects dowtherm boiler, described dowtherm boiler lower end connects discharging automatic sorting device.
2. the vertical passage direct-reduction of heated by gas metal according to claim 1 sponge iron equipment, it is characterized in that, described dowtherm boiler comprises body of heater and is positioned at the heat dissipation channel of body of heater, described heat dissipation channel and the conducting of reduction body of heater, described conveying auger extends in heat dissipation channel, in chamber between described inboard wall of furnace body and heat dissipation channel, be provided with radiator element, described chamber has water-in and steam outlet.
3. the vertical passage direct-reduction of heated by gas metal according to claim 1 sponge iron equipment, it is characterized in that, described discharging automatic sorting device comprises device body, described device body bottom is provided with slag notch and iron notch, described slag notch and iron notch top are provided with magnetic separation roller, described magnetic separation roller is positioned at the discharge port bottom of heat dissipation channel, described magnetic separation roller one side is provided with driving wheel, described driving wheel and magnetic separation roller are in transmission connection by travelling belt, to drive the rotation of magnetic separation roller, described magnetic separation roller bottom is provided with sorting dividing plate.
4. the vertical passage direct-reduction of heated by gas metal according to claim 1 sponge iron equipment, is characterized in that, the conveying auger of described rotary setting connects programmable logic controller, to drive and to control auger rotating speed.
5. the vertical passage direct-reduction of heated by gas metal according to claim 1 sponge iron equipment, is characterized in that, described fire resistant heat preserving furnace wall inwall is provided with several projections.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320809920.9U CN203602648U (en) | 2013-12-11 | 2013-12-11 | Equipment for direct reduction of sponge iron by virtue of gas heating type vertical metal channel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320809920.9U CN203602648U (en) | 2013-12-11 | 2013-12-11 | Equipment for direct reduction of sponge iron by virtue of gas heating type vertical metal channel |
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| Publication Number | Publication Date |
|---|---|
| CN203602648U true CN203602648U (en) | 2014-05-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320809920.9U Expired - Fee Related CN203602648U (en) | 2013-12-11 | 2013-12-11 | Equipment for direct reduction of sponge iron by virtue of gas heating type vertical metal channel |
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| CN (1) | CN203602648U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111334633A (en) * | 2020-04-29 | 2020-06-26 | 王安新 | External heating type vertical rotary kiln |
-
2013
- 2013-12-11 CN CN201320809920.9U patent/CN203602648U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111334633A (en) * | 2020-04-29 | 2020-06-26 | 王安新 | External heating type vertical rotary kiln |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140521 Termination date: 20171211 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |