CN105177313B - A kind of magnesium metal reduction heating means of interior external heat - Google Patents
A kind of magnesium metal reduction heating means of interior external heat Download PDFInfo
- Publication number
- CN105177313B CN105177313B CN201510513874.1A CN201510513874A CN105177313B CN 105177313 B CN105177313 B CN 105177313B CN 201510513874 A CN201510513874 A CN 201510513874A CN 105177313 B CN105177313 B CN 105177313B
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- CN
- China
- Prior art keywords
- electric heater
- reductive jar
- binding post
- tank
- stainless steel
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- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 title claims abstract description 24
- 238000010438 heat treatment Methods 0.000 title claims abstract description 17
- 230000002829 reductive effect Effects 0.000 claims abstract description 36
- 238000009413 insulation Methods 0.000 claims abstract description 3
- 239000000463 material Substances 0.000 claims description 20
- 229910001220 stainless steel Inorganic materials 0.000 claims description 14
- 239000010935 stainless steel Substances 0.000 claims description 13
- 238000000034 method Methods 0.000 claims description 8
- 229910052593 corundum Inorganic materials 0.000 claims description 3
- 239000010431 corundum Substances 0.000 claims description 3
- 239000010445 mica Substances 0.000 claims description 3
- 229910052618 mica group Inorganic materials 0.000 claims description 3
- 238000009434 installation Methods 0.000 claims description 2
- 239000011777 magnesium Substances 0.000 abstract description 13
- 229910052749 magnesium Inorganic materials 0.000 abstract description 13
- 238000006243 chemical reaction Methods 0.000 abstract description 12
- 230000036632 reaction speed Effects 0.000 abstract description 6
- 238000005265 energy consumption Methods 0.000 abstract description 4
- 239000008188 pellet Substances 0.000 abstract description 4
- 230000035484 reaction time Effects 0.000 abstract description 4
- 238000002425 crystallisation Methods 0.000 abstract description 3
- 230000008025 crystallization Effects 0.000 abstract description 3
- BITYAPCSNKJESK-UHFFFAOYSA-N potassiosodium Chemical compound [Na].[K] BITYAPCSNKJESK-UHFFFAOYSA-N 0.000 abstract description 3
- 239000002893 slag Substances 0.000 abstract description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 abstract 1
- 210000000078 claw Anatomy 0.000 abstract 1
- 238000004140 cleaning Methods 0.000 abstract 1
- 239000000284 extract Substances 0.000 abstract 1
- 239000003546 flue gas Substances 0.000 abstract 1
- 230000017525 heat dissipation Effects 0.000 abstract 1
- 238000011017 operating method Methods 0.000 abstract 1
- 238000011084 recovery Methods 0.000 abstract 1
- 238000007789 sealing Methods 0.000 abstract 1
- 238000006722 reduction reaction Methods 0.000 description 23
- 238000004519 manufacturing process Methods 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 238000003723 Smelting Methods 0.000 description 3
- 239000003245 coal Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 2
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 2
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 239000011591 potassium Substances 0.000 description 2
- 229910052700 potassium Inorganic materials 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 239000011734 sodium Substances 0.000 description 2
- 229910052708 sodium Inorganic materials 0.000 description 2
- 125000006850 spacer group Chemical group 0.000 description 2
- 229910000519 Ferrosilicon Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 description 1
- 239000000292 calcium oxide Substances 0.000 description 1
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000009533 lab test Methods 0.000 description 1
- 239000000395 magnesium oxide Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 230000007903 penetration ability Effects 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 238000009418 renovation Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Abstract
A kind of magnesium metal reduction heating means of interior external heat, for traditional magnesium-reduced heating means using conducting heat out of reductive jar extroversion tank, rate of heat transfer is low, and heat transfer is slow, and the reaction time is up to 10 12 hours, in heating process flue gas and heat dissipation cause energy consumption largely to lose.It installs additional inside and outside the movable electric heater progress reductive jar that can be loaded and unloaded at any time while heating at reductive jar center, recovery time shortens 57 hours, high-temperature region is changed into reductive jar center region of low temperature, and reaction interval increases, and reaction speed is accelerated, it is also no longer high-temperature region to restore tank wall, reductive jar consumption is reduced, simultaneously because temperature integrally increases in reductive jar, reaction speed is accelerated, magnesium compact crystallization, Quality advance.Specific embodiment：1, the binding post of insulation and sealing is loaded onto on reductive jar can；2, dismountable movable electric heater is installed additional in tank；3, tank binding post is connected with electric heater with terminal plate；4, tank outer terminal is connected with power cord and computer control line carries out network-control.Operating method：1, the reductive jar after cleaning residue is fed to horizontal center position；2, movable electric heater is put；3, pellet is loaded onto in electric heater top vacancy；4, crystallizer, potassium sodium trap and big lid flange are loaded onto in order, start vacuum；5, opening electric heater switchs when vacuum reaches 35 60Pa；6, reaction terminates, and closes electric heater power supply, after usually sequence operates, extracts electric heater, claws reducing slag and carries out subsequent cycle.
Description
Technical field
The invention belongs to magnesium metal renovation of production process field, it is related to adding outside existing reductive jar during production of magnesium by pidgeonprocess
Install the reduction technique of electric heater heating simultaneously on the basis of heat additional in reductive jar.
Background technology
Traditional production of magnesium by pidgeonprocess reductive jar heating means are that more reductive jars are mounted in reduction furnace, reduction furnace burning coal
The fuel such as gas or natural gas, oven gas, coal bed gas will go back the heating of layer tank wall, be mixed the reduction in reductive jar by heat transfer
Material heating is closed, and reduction reaction occurs under vacuum, crude magnesium crystallization is generated, due to restoring the thermal energy transmission effect of mixture
Difference, General reactions need 10-12 hours.
For this mode by inwardly conducting heat outside reductive jar, since reduction tank skin is heat-resistance stainless steel material, heat transfer
Speed, but after including the mixing bed of material of magnesia, calcium oxide and ferrosilicon powder into reductive jar tank, due to this mixture
Thermal coefficient is low, along be in reductive jar under vacuum conditions, without have convection current heat transfer type progress, only exist heat transfer and heat
Two kinds of heat transfer types are radiated, rate of heat transfer is very low.Since reductive jar is circular from section, so vertical section Temperature Distribution is theoretical
On be a kind of by, to tank center, being a round temperature gradient distribution figure from high to low, restoring tank wall to reductive jar outside tank
For the temperature difference of center material there are about between 150-250 DEG C, heating is larger early period, and heating enters smaller when high-temperature region.And magnesium metal
Reduction reaction temperature section is between 1100-1250 DEG C, and when exceeding 1250 DEG C, reduction tank skin is put into softening transform section, no
It can surmount, and less than 1100 DEG C hereinafter, reduction reaction just no longer carries out, and it is by temperature dynamics control to restore reaction speed
System, temperature is low, and for reaction speed with regard to slow, the time used in the material reaction of low-temperature space is the several times of high-temperature region, even more times,
Obtaining reaction mass total conversion will complete by extending reaction time i.e. heating time, and extension heating time will consume greatly
Where measuring energy the problem of here it is magnesium metal smelting high energy consumptions.According to calculating, theoretical energy consumption is current magnesium metal smelting technology
10% or so of horizontal consumed energy.It under the premise of not reducing reaction speed, to reduce energy consumption, reduce cost, shorten anti-
It is the key that solve this significant problem between seasonable.
The Patent No. that domestic Beijing Iron and Steel Research Geueral Inst Zhao Pei, Liu Guanghuo, Guo Peimin et al. were proposed in 2010：China
It proposes to utilize microwave technology in " method of smelting magnesium by decomposition in vacuum through microwaves " of 201010205830X (P) 2010-06-12
The magnesium refining method that production of magnesium by pidgeonprocess reduction mixture is heated.The reaction time can be reduced to 1-5 hours in patent, the result is that
It is tempting, but this is the result is that obtained in 10kg mixture laboratory experiment results, to realize industrialized production, to undergo amplification
It is big will also to walk one for microwave penetration ability afterwards, the influence of the factors such as the radiation loss of stove and amplified operability
Duan Lu is difficult to realize industrialization in the recent period.
The boolean Zha Nuofa of external Italy and domestic Zhengzhou Inst of Light Metals last century be not in the Qinghai people and village of Tu
Magnesium metal factory, be all made of reduction the bed of material inside install additional electric heater reduction mode, inside all of reduction vessel
Heater, radiation loss is big, and electric conversion efficiency is low, and power consumption is in 25000-40000kwh or so, in the higher condition of electricity price
Under be all difficult to normal operation.
Invention content
It is on the basic point of most important condition basic theory of magnesium metal reduction the present invention is based on temperature, and original system is gone back original
On the basis of the heating of outside, 1 movable electric heater that can be dismantled or install at any time of installation is restored in reductive jar
It heats the inside of tank.
It may make by the method：
1, the material of central area by original 8-10 hours can shift to an earlier date 5-7 hours and be warming up to reaction temperature in reductive jar
Degree even up to or is more than reaction temperature, and original conversion zone is made to increase so that the reduction of former heating process coal consumption
40-50% or so, capacity of equipment expand 30% or more.
2, original reduction tank wall maximum temperature is also no longer the most important condition, the thermal deformation of reductive jar, disrepair phenomenon
It can significantly reduce, reductive jar usage time can extend 10-20 days or so.
3, since temperature raising in tank, conversion zone increase, the reaction time shortens, and reaction is violent, reaction speed quickening, magnesium
Vapour pressure increase, magnesium crystal region temperature improves, compact crystallization, and potassium, sodium separation are good, the Quality advance of magnesium.
In short, the yield of magnesium, consumption, quality can be made all to be significantly improved, the economic benefit of enterprise is made to greatly improve.
Description of the drawings
1 electric heater of attached drawing rigging position in reductive jar
1, electric heater
2, binding post (sub-assembly)
3, crystallizer
4, water(-cooling) jacket
5, vacuum outlet
6, cover flange is restored
7, tank is restored
8, crude magnesium crystallizes
9, potassium sodium trap
10, connecting plate
2 binding post of attached drawing constructs
1, binding post cylinder L=115-125mm, material 1Gr18Ni9Ti
2, nut M14 materials 1Gr18Ni9Ti
3,15/ outer 38 thickness 2mm materials 1Gr18Ni9Ti in gasket
4,15/ outer 5 thickness 10mm in mica spacer
5,15/ outer 36 height 30mm material corundum ceramic rings in dead ring
6, reduction tank δ=30-32 materials ZGr3Cr24Ni7N
3 electric heater of attached drawing
The * 3.5 U-shaped spacing 70mm of material 1Gr18Ni9Ti stainless steels of 35* (2900~3000)
4 connecting plate of attached drawing
Thickness 3mm, width 35mm, length 200mm materials 1Gr18Ni9Ti
Specific implementation mode：
The present invention is realized by following procedure：
1. installing electric heater binding post additional in reductive jar：
A, it is the stainless steel reduction tank body outlet tank end that ZG3Cr24Ni7NSiRe wall thickness is 30-32mm in original material
At 100mm, at circumferential edge spacing 150mm centered on line drill two, in this attaching terminal at two,
B, binding post is the stainless steel bar of the 1Gr18Ni9Ti of length 115-125mm, and each turning length in both ends is 35-40mm
The screw thread for assembling M14 nuts,
C, the corundum dead ring of internal diameter outer diameter height 30mm is loaded onto between binding post and tank skin,
D, side respectively fills the mica spacer of 1 internal diameter outer diameter thickness 10mm for tank inside and outside each binding post and reduction tank skin
The insulation of body and electric heater,
E, outside installs 2, the gasket of internal diameter outer diameter material 1Gr18Ni9Ti thickness 2mm additional in binding post,
F, it is each 2 of 1Gr18Ni9Ti stainless steel nuts respectively to install M14 materials in the stainless steel gasket of outside additional in binding post,
2. installing movable electric heater additional in reductive jar
A, thickness 3.5mm, width 3.5mm, 1Gr18Ni9Ti stainless steel plate are processed into plate spacing 70mmU type electric heaters
B, in U-shaped electric heater open end two ends away from edges of boards 20mm respectively drillings 1, for being connected with power supply connecting plate
It connects,
3. being powered on using connecting plate
A, thickness 3mm, width 35mm, length 20mm, 1Gr18Ni9Ti stainless steel plate are used as electric heater and tank body wiring
Column connecting plate,
B, connecting plate two ends are respectively used to electric heater and binding post away from each one of hole for boring sum at edges of boards 15mm respectively
Connection.
4. reduction tank wall binding post is connected to progress network-control with computer is automatically controlled.
Concrete operation method：
<1>During the magnesium metal reduction of original external heat, when new circulating slot is made, pellet is put into tank in horizontal line
When heart line, pellet with it is iron take off plate take off it is flat；
<2>Demountable flexible lamp heater is fitted into reductive jar；
<3>Pellet is filled in electric heater top by normal operating；
<4>Binding post on electric heater and reductive jar is connected with connecting plate, is fixed with M10 bolts；
<5>Crystallizer is added by origin operation program, potassium, sodium trap and reductive jar tank mouth blind flange are opening vacuum valve just
Formula starts to restore；
<6>Notice Automatic Centering Control is to electric heater power transmission in reductive jar when vacuum degree reaches 350-600Pa on vacuum meter；
<7>After reduction, notice Automatic Centering Control closes electric heater power supply；
<8>Cover is opened by origin operation program, removes potassium sodium trap, crystallizer；
<9>The M10 bolts of electric heater and tank skin wiring intercolumniation connecting plate in tank are removed, connecting plate is taken out, electricity is extracted and adds
It is spare that hot device is put into designated position subsequent cycle；
<10>Reducing slag in tank is clawed in operation sequence carries out subsequent cycle operation.
Claims (1)
1. a kind of assembly method of the equipment of the magnesium metal reduction heating means of interior external heat, which is characterized in that including：
Reductive jar and electric heater, the electric heater are placed in reductive jar；
Specific assembly method is as follows：
1. installing electric heater binding post additional in reductive jar：
A, it is that the stainless steel that ZG3Cr24Ni7NSiRe wall thickness is 30-32mm restores at tank body outlet tank end 100mm in material, circle
Line bores two, φ 38 holes centered at the spacing 150mm of periphery, in this attaching terminal at two,
B, binding post is φ 14, and the stainless steel bar of the 1Gr18Ni9Ti of length 115-125mm, each turning length in both ends is 35-
The screw thread for assembling M14 nuts of 40mm,
C, internal diameter φ 15 is loaded onto between binding post and tank skin, the corundum dead ring of 36 height 30mm of outer diameter φ,
D, side respectively fills 1 internal diameter φ 15, the mica of outer diameter φ 45-50mm thickness 10mm inside and outside each binding post and reduction tank skin
Gasket is used for the insulation of tank body and electric heater,
E, the outside installation internal diameter φ 16 in binding post, 2, the gasket of 40 material 1Gr18Ni9Ti thickness 2mm of outer diameter φ,
F, it is each 2 of 1Gr18Ni9Ti stainless steel nuts respectively to install M14 materials in the stainless steel gasket of outside additional in binding post,
2. installing movable electric heater additional in reductive jar
A, thickness 3.5mm, width 3.5mm, 1Gr18Ni9Ti stainless steel plate are processed into plate spacing 70mmU type electric heaters
B, 1,14 holes φ are respectively bored away from edges of boards 20mm in U-shaped electric heater open end two ends, for being connected with power supply connecting plate
It connects,
3. being powered on using connecting plate
A, thickness 3mm, width 35mm, length 20mm, 1Gr18Ni9Ti stainless steel plate is used as electric heater and tank body binding post connects
Fishplate bar,
B, connecting plate two ends are respectively used to electric heater and connect away from each one of hole for boring φ 12 and φ 16 at edges of boards 15mm respectively
The connection of terminal,
4. reduction tank wall binding post is connected to progress network-control with computer is automatically controlled.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510513874.1A CN105177313B (en) | 2015-08-21 | 2015-08-21 | A kind of magnesium metal reduction heating means of interior external heat |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510513874.1A CN105177313B (en) | 2015-08-21 | 2015-08-21 | A kind of magnesium metal reduction heating means of interior external heat |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105177313A CN105177313A (en) | 2015-12-23 |
| CN105177313B true CN105177313B (en) | 2018-07-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510513874.1A Active CN105177313B (en) | 2015-08-21 | 2015-08-21 | A kind of magnesium metal reduction heating means of interior external heat |
Country Status (1)
| Country | Link |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109609787A (en) * | 2019-01-02 | 2019-04-12 | 北京科技大学 | A kind of device for smelting magnesium, calcium, strontium, barium |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2797385Y (en) * | 2005-06-10 | 2006-07-19 | 秦光明 | Reducing pot for smelting magnesium |
| CN101457304A (en) * | 2008-12-31 | 2009-06-17 | 邓小宝 | Central reverse flame interior heat storing type energy-saving high efficiency furnace and tank integrated reducing furnace system |
| CN102676849A (en) * | 2012-06-08 | 2012-09-19 | 李恒杰 | Reduction tank and magnesium reduction furnace |
| CN102816938A (en) * | 2012-08-22 | 2012-12-12 | 刘海永 | Reducing furnace for smelting magnesium by electrothermal method |
| CN102965523A (en) * | 2012-10-11 | 2013-03-13 | 中国矿冶集团控股有限公司 | Central heating reduction furnace |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101257430B1 (en) * | 2011-05-27 | 2013-04-23 | 재단법인 포항산업과학연구원 | Device for manufacturing magnesium |
-
2015
- 2015-08-21 CN CN201510513874.1A patent/CN105177313B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2797385Y (en) * | 2005-06-10 | 2006-07-19 | 秦光明 | Reducing pot for smelting magnesium |
| CN101457304A (en) * | 2008-12-31 | 2009-06-17 | 邓小宝 | Central reverse flame interior heat storing type energy-saving high efficiency furnace and tank integrated reducing furnace system |
| CN102676849A (en) * | 2012-06-08 | 2012-09-19 | 李恒杰 | Reduction tank and magnesium reduction furnace |
| CN102816938A (en) * | 2012-08-22 | 2012-12-12 | 刘海永 | Reducing furnace for smelting magnesium by electrothermal method |
| CN102965523A (en) * | 2012-10-11 | 2013-03-13 | 中国矿冶集团控股有限公司 | Central heating reduction furnace |
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| CN105177313A (en) | 2015-12-23 |
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Denomination of invention: A Method for Reducing and Heating Metal Magnesium by Internal and External Heating Effective date of registration: 20231020 Granted publication date: 20180713 Pledgee: Wenxi County Branch of China Postal Savings Bank Co.,Ltd. Pledgor: SHANXI BADA MAGNESIUM Co.,Ltd. Registration number: Y2023140000061 |