CN102235817A - Vertical heat accumulating type reduction furnace - Google Patents
Vertical heat accumulating type reduction furnace Download PDFInfo
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- CN102235817A CN102235817A CN2010101605747A CN201010160574A CN102235817A CN 102235817 A CN102235817 A CN 102235817A CN 2010101605747 A CN2010101605747 A CN 2010101605747A CN 201010160574 A CN201010160574 A CN 201010160574A CN 102235817 A CN102235817 A CN 102235817A
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- Prior art keywords
- reduction furnace
- heat accumulating
- heater
- accumulating type
- vertical
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- 230000009467 reduction Effects 0.000 title claims abstract description 79
- 238000006722 reduction reaction Methods 0.000 claims abstract description 91
- 238000007789 sealing Methods 0.000 claims abstract description 21
- 239000000446 fuel Substances 0.000 claims abstract description 14
- 238000010438 heat treatment Methods 0.000 claims abstract description 14
- 239000011819 refractory material Substances 0.000 claims description 5
- 238000001816 cooling Methods 0.000 claims description 4
- 230000003044 adaptive effect Effects 0.000 claims description 3
- 238000007664 blowing Methods 0.000 claims description 3
- 230000004044 response Effects 0.000 claims description 3
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 abstract description 14
- 229910052749 magnesium Inorganic materials 0.000 abstract description 11
- 239000011777 magnesium Substances 0.000 abstract description 11
- 229910052751 metal Inorganic materials 0.000 abstract description 11
- 239000002184 metal Substances 0.000 abstract description 11
- 238000002485 combustion reaction Methods 0.000 abstract description 10
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 abstract description 5
- 229910052791 calcium Inorganic materials 0.000 abstract description 5
- 239000011575 calcium Substances 0.000 abstract description 5
- 229910000831 Steel Inorganic materials 0.000 abstract description 4
- 239000010959 steel Substances 0.000 abstract description 4
- 238000010276 construction Methods 0.000 abstract description 2
- 230000002349 favourable effect Effects 0.000 abstract description 2
- 238000006243 chemical reaction Methods 0.000 abstract 1
- 230000008018 melting Effects 0.000 abstract 1
- 238000002844 melting Methods 0.000 abstract 1
- 239000000463 material Substances 0.000 description 10
- 238000005453 pelletization Methods 0.000 description 7
- 239000007789 gas Substances 0.000 description 6
- 238000002425 crystallisation Methods 0.000 description 5
- 230000008025 crystallization Effects 0.000 description 5
- 238000005338 heat storage Methods 0.000 description 5
- 239000002893 slag Substances 0.000 description 5
- 239000003034 coal gas Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 239000011449 brick Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 2
- 206010020843 Hyperthermia Diseases 0.000 description 2
- 238000003723 Smelting Methods 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 238000004134 energy conservation Methods 0.000 description 2
- 239000003546 flue gas Substances 0.000 description 2
- 230000036031 hyperthermia Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 241000272165 Charadriidae Species 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003500 flue dust Substances 0.000 description 1
- 239000003517 fume Substances 0.000 description 1
- 239000005431 greenhouse gas Substances 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000001172 regenerating effect Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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Abstract
The invention discloses a vertical heat accumulating type reduction furnace, relating to metal magnesium and metal calcium melting, in particular to a vertical metal magnesium and metal calcium reduction furnace. The vertical heat accumulating type reduction furnace is characterized by comprising a reduction furnace body, a heating device, a fuel and combustion supporting gas introducing-in device and a reducing reaction tank in a vertical pipe shape, wherein the center of the reducing tank body between a reducing-tank sealing member and a taper-shaped crystallizer is coaxially provided with a vertical through pipe of which the side wall is provided with a through hole. The vertical heat accumulating type reduction furnace disclosed by the invention has the advantages of short construction period and high speed of becoming effective. The vertical heat accumulating type reduction furnace body is supported by a concrete or steel structure bracket; the furnace structure is not complex and is convenient to build and install. The steps of loading, taking the crystallizer and deslagging can be mechanically and quickly operated to save labor force cost. Hot airflow rises in the hearth, which is favorable for carrying out a reduction reaction and ensures that a reduction period is shortened. Compared with a lateral tank reduction furnace, the vertical heat accumulating type reduction furnace has the advantage of saving more energy.
Description
Technical field
The vertical reduction furnace of a kind of heat accumulating type relates to a kind of magnesium metal, calcium metal smelting, particularly vertical magnesium metal, calcium metal reduction furnace of being used for.
Technical background
In the smelting production process of magnesium metal, calcium metal, reduction furnace is a nucleus equipment.The variation of reduction furnace is little since nineteen forty-one, Pidgeon process occurred, and its structure mostly is reduction and jar is that mostly horizontally disposed horizontal reduction furnace, its improvement of doing are that diameter with reduction jar becomes big, jar number and increases.Horizontal reduction furnace output is little, personnel selection is many, mechanization degree is low, and labor strength is big, severe operational environment, it is long to take on the material time, feed, draw slag and finish by workman's operation entirely, it is heavy to work, and the hyperthermia radiation heat and a large amount of flue dust that produce when drawing slag also can damage health.
To the up-to-date improvement that reduction furnace carries out, the someone proposes the design of vertical reduction furnace, utilizes the downward principle of material self gravitation, operation such as realize the superfast loading of reduction furnace and slag tap.But the many problems that can't avoid are arranged.The first bed of material is thick, and magnesium steam can't be collected.After the reduction jar was tamped by former pelletizing feed, the magnesium steam that the middle and lower part material produces can't arrive in the magnesium crystallizer at top by the bed of material.It two is that following jar mouthful of sealing difficulty or former pelletizing feed are wasted.If following jar mouthful is nearer from body of heater, the high temperature of tank body and former pelletizing feed will be delivered to down a jar mouth, feasible following jar mouthful of temperature distortion, and the atmosphere of vacuum is destroyed in jar.Because magnesium is crystallization under the atmosphere of vacuum, if vacuum can't keep, crystallization magnesium will be oxidized under 1200 ℃ of furnace temperature; For avoiding the one situation to take place to design down jar mouthful far away from body of heater, but body of heater can not participate in reacting owing to can not get enough heats with former pelletizing feed between the following jar of mouth, makes this part material be wasted.
Summary of the invention
Purpose of the present invention is exactly the deficiency that exists at above-mentioned prior art, provides a kind of and can effectively improve production capacity, cuts down the consumption of energy, reduces labor intensity, improves that operating environment is disliked, reduced production costs, the vertical reduction furnace of favourable realization mechanization heat accumulating type.
The objective of the invention is to be achieved through the following technical solutions.
The vertical reduction furnace of a kind of heat accumulating type is characterized in that its structure comprises:
Reduction furnace body of heater-this body of heater is a cavity type cylindrical shell that is built into by refractory material, and body of heater is gone to the bottom by desk-top bracing frame support fixation; On the vertical sidewall of body of heater, be provided with the heat accumulating type heating chamber;
Heater-this heater comprises that shell and reduction furnace body of heater vertical sidewall are provided with the adaptive device case of heat accumulating type heating chamber, are provided with fuel and combustion-supporting gas jet pipe in the housing;
Air-introduced machine and air blast that fuel and combustion-supporting gas access equipment-this apparatus structure comprises the conveyance conduit that connects of communicating with heat accumulating type heating device shell afterbody, is fixedly connected with the conveyance conduit tail end;
Reduction reaction can-this retort is the vertical response jar, and its structure is included as standpipe shape retort, and reduction furnace bottom of furnace body furnace wall is run through in the reacting tank body bottom, and lower end, reacting tank body bottom is by being provided with the annular sealing member sealing that has the blowing through hole between two parties; Furnace wall, reduction furnace body of heater top is run through on tank body top, on the outer wall of the reacting tank body that runs through reduction furnace body of heater top, be provided with in cooling jacket, the corresponding reacting tank body body taper crystallizer is set, reduction reaction can jar upper portion side wall is provided with vacuum tube, and the top is provided with cover; Coaxially in the reduction tank body between annular sealing member sealing and the taper crystallizer be provided with one between two parties and on sidewall, have the vertical siphunculus of through hole.
The vertical reduction furnace of a kind of heat accumulating type of the present invention, it is characterized in that described heat accumulating type heater is symmetrical arranged in twos, fuel that is provided with in the symmetrically arranged heating device shell and combustion-supporting gas jet pipe are coupled to each other by a four-way formula change-over switch and air blast and air-introduced machine.
The vertical reduction furnace of a kind of heat accumulating type of the present invention is taked the combustion system of the two accumulation of heats of coal gas, air.Regenerative Combustion Technology has changed the traditional combustion mode, fuel enters in the stove from different passages with suitable speed with air, and mix with stove internal combustion product, 21% oxygen is diluted in the air, fuel burns under the operating mode of high temperature (more than 1000 ℃) low oxygen concentration fields (5～6.5%) in burner hearth, full furnace temperature can be controlled in 1200 ℃, strengthens furnace heat transfer; Eliminated the localized hyperthermia district, furnace is even; Reduce greenhouse gases CO
2Discharge capacity 50%; Under the high temperature air condition, burn and to realize low air coefficient burning, reduce the oxidization burning loss of reduction jar; Fume afterheat can be realized " limit recovery ", and the flue-gas temperature of discharge is no more than 140 ℃.
The vertical reduction furnace of a kind of heat accumulating type of the present invention, reduction cycle is short, and energy-saving effect is remarkable.Owing to coaxially in the reduction tank body between annular sealing member sealing and the taper crystallizer be provided with a use that has the vertical siphunculus of through hole on sidewall between two parties, former pelletizing feed is distributed in around the reduction jar in the form of a ring.A reduction jar outside heat is easy to be delivered to vertical siphunculus by material, and material inside and outside is heated, and reduction reaction is carried out rapidly and thoroughly.Reduction cycle foreshortened to 8 hours by existing 12 hours.More energy-conservation more than 30% than traditional reduction furnace.
The vertical reduction furnace of a kind of heat accumulating type of the present invention, output is big, the quality height, personnel selection is few; Reduction furnace dress inventory and output are 4 times of the horizontal jar reduction furnace of tradition, and material magnesium is than lower.The crude magnesium compact crystallization of output, impurity content is low, can directly do alloy raw material; Operating time of workman is shortened in the mechanization sharp work that has really realized charging, got crystallizer and slag tap greatly, and workman's labor productivity improves 2 times.
The vertical reduction furnace of a kind of heat accumulating type of the present invention takes up an area of and small investment.Because reduction jar vertical the layout, the horizontal jar reduction furnace of " to aerial development ", the occupation of land of vertical reduction furnace takes up an area of to be saved.Vertical reduction furnace adopts the built on stilts design of furnace bottom, and refractory material uses less, and aspects such as steel, pipeline are also many unlike horizontal jar reduction furnace, so its investment still less.
The vertical reduction furnace of a kind of heat accumulating type of the present invention, the construction period is short, instant effect.Vertical reduction body of heater supports and adopts concrete or steel structure support, and furnace binding is also uncomplicated, builds by laying bricks or stones, easy for installation.Real charging, the mechanization sharp work of getting crystallizer and slagging tap, the saving labor cost of realizing.The rising of thermal current helps the carrying out of reduction reaction in the burner hearth, and reduction cycle is shortened, and compares more energy-conservation with a horizontal jar reduction furnace.
Description of drawings
Fig. 1 is the structural representation of body of heater of the present invention.
Fig. 2 is the generalized section of reduction jar.
The specific embodiment
The vertical reduction furnace of a kind of heat accumulating type, its structure comprises:
This body of heater of reduction furnace body of heater 1-is a cavity type cylindrical shell that is built into by refractory material, and body of heater is gone to the bottom by desk-top bracing frame support fixation 2; On the vertical sidewall of body of heater, be provided with heat accumulating type heating chamber 3;
Heat accumulating type heater-this heater comprises that shell and reduction furnace body of heater vertical sidewall are provided with the adaptive device case of heat accumulating type heating chamber, are provided with fuel and combustion-supporting gas jet pipe 4,5 in the housing;
Air-introduced machine 7 and air blast 8 that fuel and combustion-supporting gas access equipment-this apparatus structure comprises the conveyance conduit 6 that connects of communicating with heat accumulating type heating device shell afterbody, is fixedly connected with the conveyance conduit tail end;
This retort of reduction reaction can 9-is the vertical response jar, and its structure is included as standpipe shape retort, and reduction furnace bottom of furnace body furnace wall is run through in the reacting tank body bottom, and lower end, reacting tank body bottom is by being provided with the annular sealing member sealing 10 that has the blowing through hole between two parties; Furnace wall, reduction furnace body of heater top is run through on tank body top, on the outer wall of the reacting tank body that runs through reduction furnace body of heater top, be provided with in cooling jacket 11, the corresponding reacting tank body body taper crystallizer 12 is set, reduction reaction can jar upper portion side wall is provided with vacuum tube 13, and the top is provided with cover 14; Coaxially in the reduction tank body between annular sealing member sealing and the taper crystallizer be provided with one between two parties and on sidewall, have the vertical siphunculus 15 of through hole.
The vertical reduction furnace of a kind of heat accumulating type of the present invention, its described heat accumulating type heater is symmetrical arranged in twos, and fuel that is provided with in the symmetrically arranged heating device shell and combustion-supporting gas jet pipe are coupled to each other by a four-way formula change-over switch 16 and air blast and air-introduced machine.
The vertical reduction furnace of a kind of heat accumulating type of the present invention, for making things convenient for hearth deslagging, body of heater can be placed on concrete or the steel structure support.Body of heater by refractory brick, water refractory materials such as material feeding and build by laying bricks or stones and form.The corresponding reservation reduction jar mouth with furnace bottom of furnace roof, coal gas, air heat storage position lumen pore are reserved in body of heater end face or side.
The combustion system of coal gas, the two accumulation of heats of air is made up of heat-accumulating burner, heat storage, four-way change-over valve and direction selecting controller.Heat-accumulating burner, four-way change-over valve are connected with air blast with air-introduced machine by pipeline.
Reduce jar by reserving a jar mouth, vertically be installed in the reduction furnace body of heater.Last cover is placed in a jar mouth downwards, and crystallizer is in the water jacket position of reduction jar.Water jacket, the tube connector mode by welding with reduce tank and be connected up and down, and be exposed to respectively on the furnace roof outside the body of heater, under the furnace bottom.The reduction tank runs through about the burner hearth.The metal sealer is arranged on the lower end of reduction tank in jar, more than the tube connector.Vertical siphunculus is seated on the metal sealer, below the crystallizer; On the vertical siphunculus tube wall plurality of holes is arranged.Also be provided with cover and sealing device down in the bottom of body of heater, sealing device is connected with following cover and is used to control the opening and closing of bottom.
During operation, pack into reduction reaction can reacting tank body and having between the vertical siphunculus of through hole of pelletizing feed, when reduction reaction was carried out, the combustion air of being supplied with by air blast entered a side through exchange system and holds body.Air after the preheating enters burner hearth and realizes high-temp combustion in burner spout place and fuel mix.Combustion product enters opposite side burner spout to after the furnace reduction jar heating, and carries out heat exchange by other side heat storage, most of heat is passed to other side heat storage after, enter changement with the temperature about 140 ℃, enter atmosphere through air-introduced machine then.Control system is sent the action of instruction reversal valve after 30 seconds to 1 minute, and air, coal gas commutate simultaneously.This moment, air changed by meeting and mixed combustion at heat-accumulating burner spout place and fuel by the opposite side heat storage, and at this moment a side heat-accumulating burner spout is only as flue, and under the air-introduced machine effect, high-temperature flue gas is discharged by a side thermal regenerator body, and a commutation cycle finishes.By the continuous switch operating state of exchange system, make most of heat constantly be used to add the thermal reduction jar, thereby reach energy-saving and cost-reducing purpose.
Because pelletizing feed can't arrive the space between metal sealer and following cover and the sealing device; Be that tube connector is a hollow.When reduction reaction is carried out, vacuumize by vacuum tube, crystallization is under the vacuum state, magnesium steam enters the crystallizer intercrystalline by having on the vertical siphunculus tube wall of through hole hole and enter vertical siphunculus, rising.Last cover, water jacket all play the effect to the crystallizer cooling, impel magnesium steam rapid crystallization, and the following cover 17 and the sealing device temperature that are connected with tube connector are not high, deformation can not take place, and do not have the possibility of destroying vacuum yet.After finishing etc. reduction reaction, open cover, following cover and sealing device; Take out crystallizer, promote vertical siphunculus certain altitude, form the space at vertical siphunculus and metal sealer, reducing slag discharges out of the furnace by this space, tube connector.
Claims (2)
1. vertical reduction furnace of heat accumulating type is characterized in that its structure comprises:
Reduction furnace body of heater-this body of heater is a cavity type cylindrical shell that is built into by refractory material, and body of heater is gone to the bottom by desk-top bracing frame support fixation; On the vertical sidewall of body of heater, be provided with the heat accumulating type heating chamber;
Heater-this heater comprises that shell and reduction furnace body of heater vertical sidewall are provided with the adaptive device case of heat accumulating type heating chamber, are provided with fuel and combustion-supporting gas jet pipe in the housing;
Air-introduced machine and air blast that fuel and combustion-supporting gas access equipment-this apparatus structure comprises the conveyance conduit that connects of communicating with heat accumulating type heating device shell afterbody, is fixedly connected with the conveyance conduit tail end;
Reduction reaction can-this retort is the vertical response jar, and its structure is included as standpipe shape retort, and reduction furnace bottom of furnace body furnace wall is run through in the reacting tank body bottom, and lower end, reacting tank body bottom is by being provided with the annular sealing member sealing that has the blowing through hole between two parties; Furnace wall, reduction furnace body of heater top is run through on tank body top, on the outer wall of the reacting tank body that runs through reduction furnace body of heater top, be provided with in cooling jacket, the corresponding reacting tank body body taper crystallizer is set, reduction reaction can jar upper portion side wall is provided with vacuum tube, and the top is provided with cover; Coaxially in the reduction tank body between annular sealing member sealing and the taper crystallizer be provided with one between two parties and on sidewall, have the vertical siphunculus of through hole.
2. the vertical reduction furnace of a kind of heat accumulating type according to claim 1, it is characterized in that described heat accumulating type heater is symmetrical arranged in twos, fuel that is provided with in the symmetrically arranged heating device shell and combustion-supporting gas jet pipe are coupled to each other by a four-way formula change-over switch and air blast and air-introduced machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101605747A CN102235817A (en) | 2010-04-30 | 2010-04-30 | Vertical heat accumulating type reduction furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101605747A CN102235817A (en) | 2010-04-30 | 2010-04-30 | Vertical heat accumulating type reduction furnace |
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| Publication Number | Publication Date |
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| CN102235817A true CN102235817A (en) | 2011-11-09 |
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| CN2010101605747A Pending CN102235817A (en) | 2010-04-30 | 2010-04-30 | Vertical heat accumulating type reduction furnace |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104628004A (en) * | 2015-02-05 | 2015-05-20 | 山西龙镁伟业科技有限公司 | Preparation tank, preparation furnace kiln and preparation method of silicon-based negative electrode material for batteries |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0625711A (en) * | 1992-05-13 | 1994-02-01 | Kobe Steel Ltd | Hot isostatic pressing device |
| CN2332732Y (en) * | 1998-01-13 | 1999-08-11 | 胡文华 | Verticle reducing magnesium metallurgy plant |
| JP2001348629A (en) * | 2000-06-07 | 2001-12-18 | Toho Titanium Co Ltd | Method for refining sponge titanium and device therefor |
| CN101020966A (en) * | 2007-03-16 | 2007-08-22 | 北京胜亚恒源热能技术开发有限公司 | Heat accumulating high efficiency green vertical magnesium reducing furnace |
| CN101093140A (en) * | 2006-06-21 | 2007-12-26 | 宁夏华源冶金实业有限公司 | Heat storage type vertical metal magnesium reducing furnace |
| CN201116834Y (en) * | 2007-10-11 | 2008-09-17 | 北京科技大学 | A vertical magnesium reduction furnace with high-temperature air and low-oxygen combustion |
-
2010
- 2010-04-30 CN CN2010101605747A patent/CN102235817A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0625711A (en) * | 1992-05-13 | 1994-02-01 | Kobe Steel Ltd | Hot isostatic pressing device |
| CN2332732Y (en) * | 1998-01-13 | 1999-08-11 | 胡文华 | Verticle reducing magnesium metallurgy plant |
| JP2001348629A (en) * | 2000-06-07 | 2001-12-18 | Toho Titanium Co Ltd | Method for refining sponge titanium and device therefor |
| CN101093140A (en) * | 2006-06-21 | 2007-12-26 | 宁夏华源冶金实业有限公司 | Heat storage type vertical metal magnesium reducing furnace |
| CN101020966A (en) * | 2007-03-16 | 2007-08-22 | 北京胜亚恒源热能技术开发有限公司 | Heat accumulating high efficiency green vertical magnesium reducing furnace |
| CN201116834Y (en) * | 2007-10-11 | 2008-09-17 | 北京科技大学 | A vertical magnesium reduction furnace with high-temperature air and low-oxygen combustion |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104628004A (en) * | 2015-02-05 | 2015-05-20 | 山西龙镁伟业科技有限公司 | Preparation tank, preparation furnace kiln and preparation method of silicon-based negative electrode material for batteries |
| CN104628004B (en) * | 2015-02-05 | 2016-08-24 | 山西龙镁伟业科技有限公司 | A kind of battery silica-based class negative material preparation tank and prepare stove and preparation method |
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Application publication date: 20111109 |