CN103994654B - Rotary furnace capable of continuous production and production method thereof - Google Patents
Rotary furnace capable of continuous production and production method thereof Download PDFInfo
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- CN103994654B CN103994654B CN201410184087.2A CN201410184087A CN103994654B CN 103994654 B CN103994654 B CN 103994654B CN 201410184087 A CN201410184087 A CN 201410184087A CN 103994654 B CN103994654 B CN 103994654B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
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Abstract
The invention relates to a rotary furnace capable of continuous production and a production method of the rotary furnace. A rotary furnace body is made of wrapping heatproof steel around a heatproof material, the axis of the rotary body is obliquely arranged, one end of a feed port of the rotary furnace body is connected with a lower opening of a fixed preheating bin in a sealing mode, a material channel on the lower portion of the preheating bin is at a certain dip angle, a preheating region is arranged on a longitudinal cavity inside the fixed preheating bin, a feeder nose is formed in the upper portion of the fixed preheating bin, and the upper end of the fixed preheating bin is connected with a heat exchanger through a smoke outlet. A burner is installed in the middle of the other end of the rotary furnace body, and a siphonic tap hole is formed in the side, close to the burner, of the top wall of the rotary furnace body. An annular isolation weir is arranged in the radial direction of the middle of the interior of the rotary furnace body, and interior space of the rotary furnace body is divided by the isolation weir into a smelting region and a high temperature region. The rotary furnace is simple in structure, scientific in design, and capable of achieving energy saving and environment friendliness. Through the specific structure of the rotary furnace body, the advantages of the rotary furnace can be maintained, molten iron can be discharged almost continuously, and therefore energy consumption is further reduced.
Description
Technical field
The invention belongs to casting iron field, especially one can quantity-produced rotary furnace and production method thereof.
Background technology
Cast iron smelting furnace can be divided into coke furnace cupola, electric furnace and gas furnace three class according to mode of heating, and the discharge capacitys such as coke furnace cupola particle, sulfur dioxide are large, and environmental pollution is serious; When electric furnace uses, electrical network is impacted large, intermittent tapping, and high expensive; Combustion gas smelting furnace divides again gas-fired cupola and converter two kinds, and wherein gas-fired cupola uses water-cooled grid, and have potential safety hazard, molten iron temperature is low, and electric furnace is with the use of competence exertion greatest benefit; And existing converter ubiquity two shortcomings: one is can only batch charging as electric furnace, be interrupted molten iron discharging, can not as furnace cupola nearly continuity ground molten iron discharging, therefore can not mate better with moulding operation, although two is that some rotary furnaces are furnished with waste-heat recovery device, but still temperature is very high for the furnace gas of releasing, and Energy harvesting is insufficient.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art part, provide that a kind of design science, structure are simple, high-quality and efficient, energy-conserving and environment-protective can quantity-produced rotary furnace.
The present invention solves its technical problem and takes following technical scheme to realize:
One can quantity-produced rotary furnace, comprise converter main body, burner hole, hydrocone type tapping hole, isolation weir, fusion zone, high-temperature region, fixing pre-heating cabin, preheating zone, exhanst gas outlet and heat exchanger, converter main body is made up of refractory material outsourcing heat resisting steel, converter main body axis slant setting, burner hole is shaped with in the middle part of the end face of the lower one end of converter main body, in this burner hole, burner is installed, it is characterized in that: converter main body charging aperture one end is by the lower openings of the pre-heating cabin that is sealedly connected and fixed, the material passage of pre-heating cabin bottom is certain inclination angle, the inner longitudinal cavity of fixing pre-heating cabin is preheating zone, fixing pre-heating cabin top has dog-house, fixing pre-heating cabin upper end is connected with heat exchanger by exhanst gas outlet, in the middle part of the other end of converter main body, burner is installed, and is being shaped with a hydrocone type tapping hole close on the converter body top wall of burner side, the radial isolation weir being shaped with an annular, middle part in converter main body, converter body interior space is divided into fusion zone and high-temperature region two parts by this isolation weir.
And the isolation weir of the distance nearlyer side of hydrocone type tapping hole, described isolation weir is shaped with arc notch.
And described converter main body tilts and horizontal sextant angle 15 degree, and charging aperture one end is higher than tapping hole.
And described heat exchanger has four interfaces, be respectively high-temperature flue gas entry, Cryogenic air outlet, high temperature air outlet and cool air inlet.
And be provided with feed mechanism in described fixing pre-heating cabin, this feed mechanism sends raw material to fusion zone according to melting rate.
And, described converter main body has pulverulent material charging aperture close to burner position.
A kind of can the production method of quantity-produced rotary furnace: it is characterized in that: step is as follows:
(1) preheating: pre-hot aggregate bin is heated to preset temperature;
(2) feed intake: raw material is input in pre-hot aggregate bin by dog-house, raw material carries out preheating and heats in pre-hot aggregate bin, the charging aperture of preheating feed bin discharge hole and rotary furnace one end connects, and the inner unique feeding channel shape of pre-hot aggregate bin ensures that raw material relies on self gravitation to slip into the fusion zone of rotary furnace;
(3) rotary furnace heating, the burner combustion of rotary furnace, rotary furnace enters intensification fired state, and starts converter rotation;
(4) melting sources: along with the rising of temperature, first a part of material temperature in fusion zone near high-temperature region exceedes fusion temperature, becomes the iron liquid of molten condition, along with the time increases, when the iron water amount of fusion zone acquires a certain degree, overflow to high-temperature region by isolation weir; The inside of converter has certain slope, is convenient to iron liquid and flows to tapping hole;
(5) burner continues the furnace wall of high-temperature region to heat, and along with the rotation of rotary furnace, high-temperature kiln wall contacts with iron liquid, heat is passed to iron liquid and its temperature is raised rapidly, and increase along with crossing hot iron liquid, heat content quantitative change is large, and the iron liquid entering high-temperature region more easily heats up; The waveform furnace wall stirring molten iron of high-temperature region makes high temperature iron liquid accelerate to mix with Low-temperature Iron liquid simultaneously, and bonded hard ferrite magnet is reached unanimity;
(6) discharge scum: tapping hole to a certain extent, is gone to the position with scum level, opens tapping hole deslagging by the iron liquid measure in rotary furnace;
(7) release iron liquid: tapping hole goes to low level, iron liquid is flowed out by tapping hole, due to furnace output and casting part producing capabilities match, has enough hot iron liquid of crossing to produce tapping a blast furnace in interval time, satisfy the demands when ensureing that qualified iron liquid measure is tapped a blast furnace next time, thus realize continuous tapping production.
And described tapping hole is arranged on the radial direction of rotary furnace, and tapping hole channel direction and radial direction form an angle.
And the described step deslagging of (6) discharging in scum adopts air gun to assist.
Advantage of the present invention and good effect are:
Structure of the present invention is simple, design science, energy-conserving and environment-protective, by turning round the concrete structure of body of heater, the advantage of converter can either be kept, again can approximate continuous molten iron discharging, a step-down low energy consumption of going forward side by side.
Accompanying drawing explanation
Fig. 1 is general assembly structural representation of the present invention;
Fig. 2 is converter part-structure sectional view in the present invention;
Fig. 3 is that C-C in Fig. 2 is to structure sectional view;
Fig. 4 is that D-D in Fig. 2 is to structure sectional view;
Fig. 5 is body contours structural representation of the present invention;
Fig. 6 is that B-B in Fig. 6 is to structural representation.
Mark in accompanying drawing: 1 exhanst gas outlet; 2 heat exchangers; 3 Cryogenic air outlets; 4 high temperature air outlets; 5 cool air inlets; 6 dog-houses; 7 preheating zones; 8 pre-hot aggregate bins; 9 fusion zones; 10 segmentation weirs; 11 high-temperature regions; 12 burner mouths; 13 converter main bodys; 14 hydrocone type tapping holes; 15 gear rings; 16 retainer plates; 17 iron liquid; 18 sealings; 19 raw materials.
Detailed description of the invention
Below in conjunction with accompanying drawing, also by specific embodiment, the invention will be further described, and following examples are descriptive, are not determinate, can not limit protection scope of the present invention with this.
One can quantity-produced rotary furnace, comprise converter main body 13, burner hole 12, hydrocone type tapping hole 14, isolation weir 10, fusion zone 9, high-temperature region 11, pre-hot aggregate bin 8, preheating zone 7, exhanst gas outlet 1 and heat exchanger 2, converter main body is the cylinder barrel shaped structure be made up of refractory material outsourcing heat resisting steel, converter can horizontal positioned also can slant setting, converter main body axis inclination about 15 degree placements shown in the present embodiment, be convenient to iron liquid flow to tapping hole direction, converter main body is 180 degree of reciprocating rotations around its axis to both sides, converter main body two ends all adopt carrying roller to support and are driven by motor-reductor, this drive mechanism is this area conventional means, not shown,
Converter main body is shaped with burner hole close in the middle part of one end of tapping hole, in this burner hole, burner is installed, be shaped with a hydrocone type tapping hole close on the converter body top wall of burner side, can prevent when molten iron discharging a large amount of scum from overflowing, to obtain purer molten iron;
In converter main body, middle part is shaped with the isolation weir of annular radial, and converter body interior space is divided into fusion zone and high-temperature region two parts by this isolation weir, and unfused raw material and high temperature liquid iron separate by isolation weir, and the iron liquid of high-temperature region can be heated up very soon; When fusion zone molten iron is abundant, overflows to high-temperature region by isolation weir and heat.Isolation weir axial cross section shape as shown in Figure 4, the centre bore of hot gas is shaped with in the middle part of isolation weir, the isolation weir of the distance nearlyer side of hydrocone type tapping hole is shaped with arc notch, tapping hole is when low level, molten iron can flow to high-temperature region through this arc notch, and is shaped with slag notch (not shown) in the radial side of rotary furnace and is convenient to slagging-off.
Charging aperture one end of converter main body connects the lower openings of pre-hot aggregate bin by seal, the seal of the present embodiment adopts the groove sealing 18 of annular, effectively prevents heat smoke from escaping from the gap of the two; The material passage of pre-heating cabin bottom is certain inclination angle, is convenient to raw material and enters revolution body of heater; The inner longitudinal cavity of pre-hot aggregate bin is preheating zone, and pre-hot aggregate bin top has dog-house 6, and pre-hot aggregate bin upper end is connected with heat exchanger by exhanst gas outlet, to reclaim burner gas residual heat further;
The present embodiment adopts special heat exchanger structure see accompanying drawing 1, and this heat exchanger has four interfaces, is respectively high-temperature flue gas entry, Cryogenic air outlet 3, high temperature air outlet 4 and cool air inlet 5.
Pre-hot aggregate bin is fixed on guide rail, and during work, its discharging opening is close to converter charging aperture and seamlessly transits, and can say that feed bin is removed during overhaul; Be provided with feed mechanism in pre-hot aggregate bin, this feed mechanism sends raw material to fusion zone according to melting rate.The structure of hydrocone type tapping hole is shown in accompanying drawing 3, is convenient to molten iron flow and control; And, converter main body has pulverulent material charging aperture close to burner position, is convenient to add the pulverulent material such as carbon dust, iron pin.
The gas of burning can be natural gas, liquefied petroleum gas (propane), acetylene etc., and can be simultaneously that air blast is combustion-supporting according to required molten iron temperature, also can be oxygen enrichment even pure oxygen combustion-supporting; Heat exchanger can be the heat exchanger that furnace cupola is conventional also can be illustrated dedicated heat exchanger.
In order to reinforce converter main body, as shown in accompanying drawing 5 to accompanying drawing 6, converter main body two ends wall coaxial is fixed with two retainer plates 16, and in the middle part of converter main body, wall coaxial is fixed with a gear ring 15, and this gear ring coordinates with driving tooth bar thus drives converter to rotate.
For increasing the capacity of heat transmission, accelerate iron liquid inner loop, in rotary furnace, the furnace wall surface of high-temperature region is made wavy.
The production method of above-mentioned rotary furnace is:
(1) preheating: pre-hot aggregate bin is heated to preset temperature;
(2) feed intake: raw material 19 is input in pre-hot aggregate bin by dog-house, raw material carries out preheating and heats in pre-hot aggregate bin, the charging aperture of preheating feed bin discharge hole and rotary furnace one end connects, and the inner unique feeding channel shape of pre-hot aggregate bin ensures that raw material can rely on self gravitation to slip into the fusion zone of rotary furnace;
(3) rotary furnace heating, the burner combustion of rotary furnace, rotary furnace enters intensification fired state, and starts converter rotation;
(4) melting sources: along with the rising of temperature, first a part of material temperature in fusion zone near high-temperature region exceedes fusion temperature, becomes the iron liquid 17 of molten condition, along with the time increases, when the iron water amount of fusion zone acquires a certain degree, overflow to high-temperature region by isolation weir; The inside of converter has certain slope, is convenient to iron liquid and flows to tapping hole;
(5) burner continues the furnace wall of high-temperature region to heat, and along with the rotation of rotary furnace, high-temperature kiln wall contacts with iron liquid, heat is passed to iron liquid and its temperature is raised rapidly, and increase along with crossing hot iron liquid, heat content quantitative change is large, and the iron liquid entering high-temperature region more easily heats up; The waveform furnace wall stirring molten iron of high-temperature region makes high temperature iron liquid accelerate to mix with Low-temperature Iron liquid simultaneously, and bonded hard ferrite magnet is reached unanimity;
(6) discharge scum: tapping hole to a certain extent, is gone to the position with scum level by the iron liquid measure in rotary furnace, open tapping hole air gun and assist slag to discharge;
(7) release iron liquid: tapping hole goes to low level, iron liquid is flowed out by tapping hole, due to furnace output and casting part producing capabilities match, has enough hot iron liquid of crossing to produce tapping a blast furnace in interval time, satisfy the demands when ensureing that qualified iron liquid measure is tapped a blast furnace next time, thus realize continuous tapping production.
Tapping hole of the present invention is arranged on the radial direction of rotary furnace, and traditional converter utilizes rotary furnace port to tap a blast furnace, structure of the present invention conveniently when needed can open tapping hole, and turned to place beneath to release iron liquid, and tapping hole channel direction and radial direction form an angle, selection can be needed to be placed in slagging-off or tapping position according to technique.
Although disclose embodiments of the invention and accompanying drawing for the purpose of illustration, but it will be appreciated by those skilled in the art that: in the spirit and scope not departing from the present invention and claims, various replacement, change and amendment are all possible, therefore, scope of the present invention is not limited to the content disclosed in embodiment and accompanying drawing.
Claims (9)
1. one kind can quantity-produced rotary furnace, comprise converter main body, burner hole, hydrocone type tapping hole, isolation weir, fusion zone, high-temperature region, fixing pre-heating cabin, preheating zone, exhanst gas outlet and heat exchanger, converter main body is made up of refractory material outsourcing heat resisting steel, converter main body axis slant setting, burner hole is shaped with in the middle part of the end face of the lower one end of converter main body, in this burner hole, burner is installed, it is characterized in that: converter main body charging aperture one end is by the lower openings of the pre-heating cabin that is sealedly connected and fixed, the material passage of pre-heating cabin bottom is certain inclination angle, the inner longitudinal cavity of fixing pre-heating cabin is preheating zone, fixing pre-heating cabin top has dog-house, fixing pre-heating cabin upper end is connected with heat exchanger by exhanst gas outlet, in the middle part of the other end of converter main body, burner is installed, and is being shaped with a hydrocone type tapping hole close on the converter body top wall of burner side, the radial isolation weir being shaped with an annular, middle part in converter main body, converter body interior space is divided into fusion zone and high-temperature region two parts by this isolation weir.
2. according to claim 1 can quantity-produced rotary furnace, it is characterized in that: the isolation weir of the distance nearlyer side of hydrocone type tapping hole, described isolation weir is shaped with arc notch.
3. according to claim 1 can quantity-produced rotary furnace, it is characterized in that: described converter main body tilts and horizontal sextant angle 15 degree, and charging aperture one end is higher than tapping hole.
4. according to claim 1 can quantity-produced rotary furnace, it is characterized in that: described heat exchanger has four interfaces, be respectively high-temperature flue gas entry, Cryogenic air outlet, high temperature air outlet and cool air inlet.
5. according to claim 1 can quantity-produced rotary furnace, it is characterized in that: be provided with feed mechanism in described fixing pre-heating cabin, this feed mechanism sends raw material to fusion zone according to melting rate.
6. according to claim 1 can quantity-produced rotary furnace, it is characterized in that: described converter main body has pulverulent material charging aperture close to burner position.
7. one kind can the production method of quantity-produced rotary furnace: it is characterized in that: step is as follows:
(1) preheating: pre-hot aggregate bin is heated to preset temperature;
(2) feed intake: raw material is input in pre-hot aggregate bin by dog-house, raw material carries out preheating and heats in pre-hot aggregate bin, the charging aperture of preheating feed bin discharge hole and rotary furnace one end connects, and the inner unique feeding channel shape of pre-hot aggregate bin ensures that raw material relies on self gravitation to slip into the fusion zone of rotary furnace;
(3) rotary furnace heating, the burner combustion of rotary furnace, rotary furnace enters intensification fired state, and starts converter rotation;
(4) melting sources: along with the rising of temperature, first a part of material temperature in fusion zone near high-temperature region exceedes fusion temperature, becomes the iron liquid of molten condition, along with the time increases, when the iron water amount of fusion zone acquires a certain degree, overflow to high-temperature region by isolation weir; The inside of converter has certain slope, is convenient to iron liquid and flows to tapping hole;
(5) burner continues the furnace wall of high-temperature region to heat, and along with the rotation of rotary furnace, high-temperature kiln wall contacts with iron liquid, heat is passed to iron liquid and its temperature is raised rapidly, and increase along with crossing hot iron liquid, heat content quantitative change is large, and the iron liquid entering high-temperature region more easily heats up; The waveform furnace wall stirring molten iron of high-temperature region makes high temperature iron liquid accelerate to mix with Low-temperature Iron liquid simultaneously, and bonded hard ferrite magnet is reached unanimity;
(6) discharge scum: tapping hole to a certain extent, is gone to the position with scum level, opens tapping hole deslagging by the iron liquid measure in rotary furnace;
(7) release iron liquid: tapping hole goes to low level, iron liquid is flowed out by tapping hole, due to furnace output and casting part producing capabilities match, has enough hot iron liquid of crossing to produce tapping a blast furnace in interval time, satisfy the demands when ensureing that qualified iron liquid measure is tapped a blast furnace next time, thus realize continuous tapping production.
8. according to claim 7 can the production method of quantity-produced rotary furnace, it is characterized in that: described tapping hole is arranged on the radial direction of rotary furnace, and tapping hole channel direction and radial direction form an angle.
9. according to claim 7 can the production method of quantity-produced rotary furnace, it is characterized in that: the described step deslagging of (6) discharging in scum adopts air gun to assist.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410184087.2A CN103994654B (en) | 2014-05-05 | 2014-05-05 | Rotary furnace capable of continuous production and production method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410184087.2A CN103994654B (en) | 2014-05-05 | 2014-05-05 | Rotary furnace capable of continuous production and production method thereof |
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| Publication Number | Publication Date |
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| CN103994654A CN103994654A (en) | 2014-08-20 |
| CN103994654B true CN103994654B (en) | 2015-07-08 |
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| CN201410184087.2A Active CN103994654B (en) | 2014-05-05 | 2014-05-05 | Rotary furnace capable of continuous production and production method thereof |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105157418B (en) * | 2015-07-14 | 2017-10-20 | 河北中北环保科技有限公司 | It is a kind of can continuous dosing combustion gas revolution smelting furnace and its production method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH0642730A (en) * | 1992-06-01 | 1994-02-18 | Yasuo Hirose | Ash melting furnace |
| JP3092083B2 (en) * | 1996-02-13 | 2000-09-25 | 新日本製鐵株式会社 | Preheating apparatus and preheating method for iron scrap |
| GB0304306D0 (en) * | 2003-02-26 | 2003-04-02 | Evans Thomas H | Furnace |
| CN203360539U (en) * | 2013-07-22 | 2013-12-25 | 南南铝业股份有限公司 | Regenerative aluminum smelting rotary furnace |
| CN203881113U (en) * | 2014-05-05 | 2014-10-15 | 河北中北环保科技有限公司 | Rotary furnace capable of achieving continuous production |
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