CN107084379A - Magnesium metal smelt reducing slag waste-heat recovery device and its method - Google Patents
Magnesium metal smelt reducing slag waste-heat recovery device and its method Download PDFInfo
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- CN107084379A CN107084379A CN201710459188.XA CN201710459188A CN107084379A CN 107084379 A CN107084379 A CN 107084379A CN 201710459188 A CN201710459188 A CN 201710459188A CN 107084379 A CN107084379 A CN 107084379A
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- 239000002893 slag Substances 0.000 title claims abstract description 131
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 title claims abstract description 50
- 239000002918 waste heat Substances 0.000 title claims abstract description 36
- 238000000034 method Methods 0.000 title claims abstract description 25
- 238000011084 recovery Methods 0.000 title claims abstract description 25
- 241001062472 Stokellia anisodon Species 0.000 title claims abstract description 24
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 69
- 238000001816 cooling Methods 0.000 claims abstract description 9
- 235000003140 Panax quinquefolius Nutrition 0.000 claims abstract description 4
- 240000005373 Panax quinquefolius Species 0.000 claims abstract description 4
- 229910052749 magnesium Inorganic materials 0.000 claims description 27
- 239000011777 magnesium Substances 0.000 claims description 27
- 238000003723 Smelting Methods 0.000 claims description 25
- 239000007789 gas Substances 0.000 claims description 24
- 238000002347 injection Methods 0.000 claims description 12
- 239000007924 injection Substances 0.000 claims description 12
- 238000012546 transfer Methods 0.000 claims description 7
- 241000196324 Embryophyta Species 0.000 claims description 5
- 230000008016 vaporization Effects 0.000 claims description 4
- 238000009834 vaporization Methods 0.000 claims description 4
- 238000009413 insulation Methods 0.000 claims description 3
- 230000002829 reductive effect Effects 0.000 abstract description 10
- 238000013461 design Methods 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 4
- 229910052751 metal Inorganic materials 0.000 abstract description 2
- 239000002184 metal Substances 0.000 abstract description 2
- 238000010438 heat treatment Methods 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000003860 storage Methods 0.000 description 3
- 239000000498 cooling water Substances 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005868 electrolysis reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000011946 reduction process Methods 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B1/00—Methods of steam generation characterised by form of heating method
- F22B1/02—Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers
- F22B1/04—Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers the heat carrier being hot slag, hot residues, or heated blocks, e.g. iron blocks
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B26/00—Obtaining alkali, alkaline earth metals or magnesium
- C22B26/20—Obtaining alkaline earth metals or magnesium
- C22B26/22—Obtaining magnesium
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Sustainable Energy (AREA)
- General Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Manufacturing & Machinery (AREA)
- Sustainable Development (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
Abstract
The invention belongs to metal smelt waste heat recovery apparatus, more particularly to a kind of magnesium metal smelt reducing slag waste-heat recovery device and its method, include shell, and located at the slag inlet of shell upper, located at the slag-drip opening of outer casing bottom, shell forms closed Sheng slag space with slag inlet, slag-drip opening, contains and two steam generators are provided with slag space, and described steam generator is symmetrical set along slag space axis is contained.It is of the invention novel in design, reasonable, high temperature reduction slag enters waste-heat recovery device from top slag inlet, the water of steam generator absorbs high temperature reduction slag heat and produces steam, reducing slag after cooling is discharged through slag-drip opening, so that high temperature reduction slag falls outside pipe, heat release, water absorb heat in pipe and produce steam, and using effect is good, and reducing slag waste heat is fully recycled, the energy is saved, cost is reduced.
Description
Technical field
The invention belongs to metal smelt waste heat recovery apparatus, more particularly to a kind of magnesium metal smelt reducing slag waste heat recovery dress
Put and its method.
Background technology
China is sure to occupy the first in the world great Mei producing countries and country of consumption, and the production of magnesium metal mainly has thermal reduction and electrolysis
Two kinds, the most Smelting magnesium enterprise smelting magnesium by thermal reduction process techniques of current China account for more than the 90% of magnesium yield.Due to hot method
Refining magnesium often produces 1 ton of magnesium and averagely produces 6 tons of magnesium reduction slags, and the temperature that reacted reducing slag is discharged from reductive jar typically exists
1000-1200 DEG C, substantial amounts of heat is contained in reducing slag.But prior art processes limitation is limited by, high temperature reduction slag is direct
The stacking of waste residue factory is transported to, heat is difficult to effective utilization.In recent years, magnesium-smelting plant also engendered the application of reducing slag waste heat
Processes and apparatus, but application starting point it is more have to take cooling measure from being easy to reducing slag to convey, and waste heat
Using being then subsidiary effect.Such as Chinese patent（Denomination of invention：Smelting magnesium reducing slag waste heat boiler, the patent No.：
CN201210528755.x）, cooling water is heated into high-temperature water as thermal source, realized by the reducing slag produced by the use of magnesium-smelting silicothermic process
The recycling of heat；But through actual verification, it is impossible to realize the purpose that high-quality steam is produced by reducing slag waste-heat cold water,
Application scenario is limited, and equipment investment is big, the low problem of organic efficiency.
The content of the invention
For deficiency of the prior art, the present invention provides a kind of magnesium metal smelt reducing slag waste-heat recovery device and its side
Method, it is novel in design, reasonable, it is used as thermal source heating cooling water to produce steam, application by the use of the high temperature reduction slag that method for smelting magnesium by hot is produced
In Smelting magnesium production system, the recycling of reducing slag waste heat is realized, energy resource consumption has been saved；Reducing slag temperature is reduced simultaneously
Degree, is easy to take mechanization transportation measures, improves work situation, reduces the labor intensity of operating personnel, reduction method for smelting magnesium by hot
Production cost.
According to design provided by the present invention, a kind of magnesium metal smelt reducing slag waste-heat recovery device, comprising outer
Shell, and located at the slag inlet of shell upper, located at the slag-drip opening of outer casing bottom, shell forms closed with slag inlet, slag-drip opening
Slag space is contained, contains and two steam generators is provided with slag space, slag space axis or so is contained on described steam generator edge
It is symmetrical arranged.
Above-mentioned, described steam generator includes upper steam drum, lower steam drum, leads between upper steam drum and lower steam drum
Cross multiple rows of heat-exchanging tube bundle connection；Described upper steam drum one end is the sealed end of closing, and the other end, which is connected with, extends shell
Steam outlet pipe；Lower steam drum one end is the sealed end of closing, and the other end is connected with the water inlet pipe for extending shell.
Above-mentioned, it is provided with gas outlet valve on described steam outlet pipe；Water intaking valve is provided with water inlet pipe.
It is above-mentioned, shell and slag inlet, slag-drip opening center on same axis.
Above-mentioned, described shell includes housing and the heat-insulation layer being arranged on housing.
A kind of magnesium metal smelt reducing slag exhaust heat recovering method, includes following content：
A）Above-mentioned magnesium metal smelt reducing slag waste-heat recovery device is set at reduction furnace slag discharge unit, steam generator is included
Upper steam drum, lower steam drum, are connected between upper steam drum and lower steam drum by multiple rows of heat-exchanging tube bundle；Described upper steam drum one
Hold the sealed end for closing, the other end be connected with extend shell and with Smelting magnesium reduces that power injection pump is connected goes out vapour
Pipe；Lower steam drum one end is the sealed end of closing, and the other end is connected with water inlet pipe that is extending shell and being connected with water pump；Go out
It is provided with steam pipe on gas outlet valve, water inlet pipe and is provided with water intaking valve；
B）The high temperature reduction slag that reduction furnace slag discharge unit intermittence is fallen is entered by slag inlet contains slag space, passes through steam generator
The heat-transfer surfaces, the cold water transferred heat in steam generator such as heat-exchanging tube bundle progress；
C）The aperture of steam generator water intaking valve and gas outlet valve is correspondingly controlled by water intaking valve and gas outlet valve, makes steam generator
Interior cold water vaporization, output is used for steam needed for Smelting magnesium reduction power injection pump；Reducing slag after cooling is discharged by slag-drip opening,
Slag muck or slag storehouse are transported to by plant equipment.
In above-mentioned method, step A, upper steam drum is provided with 2 ~ 10 row's heat-exchanging tube bundles with lower steam drum.
In above-mentioned method, step C, steam generator water intaking valve is correspondingly controlled by water intaking valve and gas outlet valve and goes out vapour
The aperture of valve so that steam outlet pipe pressure is not less than 0.1MPa, the temperature for producing steam is not less than 110 DEG C；Slag-drip opening discharge reduction
The mean temperature of slag is not higher than 300 DEG C.
In above-mentioned method, step C, steam generator water intaking valve is correspondingly controlled by water intaking valve and gas outlet valve and goes out vapour
The aperture of valve so that steam outlet pipe pressure is 0.1 ~ 0.5MPa, the temperature for producing steam is 110 ~ 150 DEG C；Slag-drip opening discharge reduction
The mean temperature of slag is 200 ~ 300 DEG C.
Above-mentioned method, described steam outlet pipe connects setting with the working steam entrance that Smelting magnesium reduces power injection pump,
Smelting magnesium reduces power injection pump and is provided with valve on road with reduction furnace, steam generator connecting pipe.
Beneficial effects of the present invention：
Of the invention novel in design, reasonable, unique structure passes through and sets two symmetrical steam generators, steam generator
Outside is high temperature reduction slag, and inside is water, and heating surface arrangement is convenient, good heat-transfer so that high temperature reduction slag falls outside pipe
Heat release, water absorb heat in pipe and produce steam；Reducing slag UTILIZATION OF VESIDUAL HEAT IN produces steam, under the reductive jar of Smelting magnesium also original system
Portion, sets up reducing slag waste-heat recovery device, reclaims high temperature reduction slag waste heat, it is high that heating cold water produces, quality wider than hot water use
Vapor, as reduction system steam jet formula vavuum pump power or other purposes, saved the energy, reduced and be produced into
This；Improve work situation, reduce labor, by the setting of reducing slag waste-heat recovery device, be reduced to reducing slag temperature
Less than 260 DEG C, you can using the transport of mechanization conveying equipment and storage reducing slag, reduce labor, it is to avoid reducing slag
Dust pollution.
Brief description of the drawings：
Fig. 1 is front view profile of the invention；
Fig. 2 is left view profile of the invention；
Fig. 3 is fundamental diagram of the invention.
Embodiment：
Label in figure, label 1 represents slag inlet, and label 2 represents shell, and label 3 represents upper steam drum, and label 4 represents heat exchanger tube
Beam, label 5 represents lower steam drum, and label 6 represents slag-drip opening, and label 7 represents water inlet pipe, and label 8 is reducing slag, and label 9 is represented
Water, label 10 represents water vapour, and label 11 represents steam outlet pipe, and label 01 represents waste-heat recovery device, and label 02 represents reduction furnace,
Label 03 represents Smelting magnesium reduction power injection pump.
The present invention is further detailed explanation with technical scheme below in conjunction with the accompanying drawings, and detailed by preferred embodiment
Describe bright embodiments of the present invention in detail, but embodiments of the present invention are not limited to this.
Embodiment 1, referring to shown in Fig. 1 ~ 2, a kind of magnesium metal smelt reducing slag waste-heat recovery device comprising shell, and is set
In the slag inlet of shell upper, located at the slag-drip opening of outer casing bottom, it is empty that shell forms closed Sheng slag with slag inlet, slag-drip opening
Between, shell and slag inlet, slag-drip opening center on same axis；Contain in slag space and be provided with two steam generators,
Described steam generator is symmetrical set along the axis.High temperature reduction slag is filled from top slag inlet into waste heat recovery
Put, the water of steam generator absorbs high temperature reduction slag heat and produces steam, and the reducing slag after cooling is discharged through slag-drip opening so that high
Fall outside pipe heat release, water of warm reducing slag absorbs heat in pipe and produces steam, saves the energy, reduces cost.
Embodiment 2, described steam generator includes upper steam drum, lower steam drum, between upper steam drum and lower steam drum
Connected by multiple rows of heat-exchanging tube bundle；Described upper steam drum one end is the sealed end of closing, and the other end, which is connected with, extends shell
Steam outlet pipe；Lower steam drum one end is the sealed end of closing, and the other end is connected with the water inlet pipe for extending shell.Upper steam drum with
Lower steam drum is connected by heat-exchanging tube bundle, and the water in heat-exchanging tube bundle absorbs high temperature reduction slag heat and produces steam, after cooling
Reducing slag discharged through slag-drip opening so that fall outside pipe heat release, water of high temperature reduction slag absorbs heat in pipe and produces steam, saves
The energy, reduces cost.
Above-mentioned, it is provided with gas outlet valve on described steam outlet pipe；Water intaking valve is provided with water inlet pipe, it is easy to use, it is easy to
The regulation control of running parameter.
It is above-mentioned, shell and slag inlet, slag-drip opening center on same axis, be symmetrical set, used
Heat transfer effect is more preferable in journey.
Above-mentioned, described shell includes housing and the heat-insulation layer being arranged on housing, it is ensured that the sealing of shell and guarantor
Warm nature.
It can be seen that by above-mentioned, heating surface arranges convenient, good heat-transfer in the present embodiment, makes reducing slag waste heat boiler structure
Simply, floor space is small, sets easy；By the use of reducing slag waste heat as thermal source, specific heat water purposes is wide, product to produce for heating cold water
The high vapor of matter, reduces the steam jet pump of process for Smelting magnesium or is used as other purposes.Reducing slag after cooling
Mechanization conveying can be achieved, labor and environmental pollution is reduced.
Embodiment 3, shown in Figure 3, based on said apparatus, the present embodiment provides a kind of magnesium metal smelt reducing slag waste heat
Recovery method, includes following content：
A）Above-mentioned magnesium metal smelt reducing slag waste-heat recovery device is set at reduction furnace slag discharge unit, steam generator is included
Upper steam drum, lower steam drum, are connected between upper steam drum and lower steam drum by multiple rows of heat-exchanging tube bundle；Described upper steam drum one
Hold the sealed end for closing, the other end be connected with extend shell and with Smelting magnesium reduces that power injection pump is connected goes out vapour
Pipe；Lower steam drum one end is the sealed end of closing, and the other end is connected with water inlet pipe that is extending shell and being connected with water pump；Go out
It is provided with steam pipe on gas outlet valve, water inlet pipe and is provided with water intaking valve；
B）The high temperature reduction slag that reduction furnace slag discharge unit intermittence is fallen is entered by slag inlet contains slag space, passes through steam generator
The heat-transfer surfaces, the cold water transferred heat in steam generator such as heat-exchanging tube bundle progress；
C）The aperture of steam generator water intaking valve and gas outlet valve is correspondingly controlled by water intaking valve and gas outlet valve, makes steam generator
Interior cold water vaporization, output is used for steam needed for Smelting magnesium reduction power injection pump；Reducing slag after cooling is discharged by slag-drip opening,
Slag muck or slag storehouse are transported to by plant equipment.
Water at low temperature is injected in steam generator by water intaking valve, makes the lower steam drum of steam generator by heat-exchanging tube bundle, changes
The lower space of heat pipe bundle and upper steam drum fills water, and the upper space of upper steam drum is the vapor space.The height that intermittence is fallen
Warm reducing slag from slag inlet fall into outside steam generator and in shell between Sheng slag space, heat is passed through into heat-exchanging tube bundle etc.
Heat-transfer surface, passes to the cold water in steam generator.By controlling the aperture of steam generator water intaking valve and gas outlet valve, make steam
Cold water vaporization in generator, output steam is endlessly confessed.Reducing slag after cooling is discharged from retracting device slag-drip opening,
Slag muck or slag storehouse are transported to by plant equipment.Waste heat recovery flow is succinct, workable, energy-saving and emission-reduction, more than reducing slag
Heat is fully recycled, and greatlys save Smelting magnesium cost, with preferable market development prospect.
Embodiment 4, essentially identical with the content of embodiment 3, difference is, in step A, upper steam drum and lower steam drum
2 ~ 10 row's heat-exchanging tube bundles are provided with, high temperature reduction slag carries out fully heat exchange with heat-exchanging tube bundle, and using effect is good.
In step C, the aperture of steam generator water intaking valve and gas outlet valve is correspondingly controlled by water intaking valve and gas outlet valve, is made
Obtain steam outlet pipe pressure and be not less than 0.1MPa, the temperature for producing steam is not less than 110 DEG C；Slag-drip opening discharges the mean temperature of reducing slag
Not higher than 300 DEG C.
By reducing slag waste heat recovery, reducing slag temperature is set to be reduced to below suitable temperature, you can using mechanization conveying
Equipment conveying and storage reducing slag, reduce labor, it is to avoid reducing slag dust pollution, save the energy, the reduction energy and disappear
Consumption, reduction pollutant emission, improve the level of resources utilization so that reducing slag waste heat obtains efficient circulation utilization.
Embodiment 5, essentially identical with the content of embodiment 3, difference is, in step C, passes through water intaking valve and gas outlet valve
Correspondingly control the aperture of steam generator water intaking valve and gas outlet valve so that steam outlet pipe pressure is 0.1 ~ 0.5MPa, produces steam
Temperature be 110 ~ 150 DEG C；The mean temperature of slag-drip opening discharge reducing slag is 200 ~ 300 DEG C, is averaged temperature control 260
DEG C or so.
Described steam outlet pipe connects setting with the working steam entrance that Smelting magnesium reduces power injection pump, and Smelting magnesium reduction is dynamic
Power jet pump is with being provided with the valve for switching control on reduction furnace, steam generator connecting pipe road.
By adjusting steam generator water intaking valve and gas outlet valve, reducing slag temperature is set to be reduced to less than 260 DEG C, you can to use
Mechanization conveying equipment is transported and storage reducing slag so that reducing slag waste heat obtains efficient circulation utilization, and energy-conserving and environment-protective are reduced dirty
Dye.The present invention has good promotional value in method for smelting magnesium by hot field.
The present invention is not limited to above-mentioned embodiment, and those skilled in the art can also make a variety of changes accordingly, but
It is any all to cover within the scope of the claims with equivalent or similar change of the invention.
Claims (10)
1. a kind of magnesium metal smelt reducing slag waste-heat recovery device, comprising shell, and located at the slag inlet of shell upper, located at outer
The slag-drip opening of shell bottom, shell forms closed Sheng slag space with slag inlet, slag-drip opening, it is characterised in that contains and is set in slag space
Two steam generators are equipped with, described steam generator is symmetrical set along slag space axis is contained.
2. magnesium metal smelt reducing slag waste-heat recovery device according to claim 1, it is characterised in that described steam hair
Raw device includes upper steam drum, lower steam drum, is connected between upper steam drum and lower steam drum by multiple rows of heat-exchanging tube bundle；Described is upper
Steam drum one end is the sealed end of closing, and the other end is connected with the steam outlet pipe for extending shell；Lower steam drum one end is closing
Sealed end, the other end is connected with the water inlet pipe for extending shell.
3. magnesium metal smelt reducing slag waste-heat recovery device according to claim 2, it is characterised in that described steam outlet pipe
On be provided with gas outlet valve；Water intaking valve is provided with water inlet pipe.
4. magnesium metal smelt reducing slag waste-heat recovery device according to claim 1, it is characterised in that shell and slag input
Mouthful, the center of slag-drip opening is on same axis.
5. magnesium metal smelt reducing slag waste-heat recovery device according to claim 1, it is characterised in that described shell bag
Containing housing and the heat-insulation layer being arranged on housing.
6. a kind of magnesium metal smelt reducing slag exhaust heat recovering method, it is characterised in that include following content：
A）Magnesium metal smelt reducing slag waste-heat recovery device described in claim 1, steam are set at reduction furnace slag discharge unit
Generator includes upper steam drum, lower steam drum, is connected between upper steam drum and lower steam drum by multiple rows of heat-exchanging tube bundle；Described
Upper steam drum one end is the sealed end of closing, and the other end is connected with extending shell and connects with Smelting magnesium reduction power injection pump
The steam outlet pipe connect；Lower steam drum one end is the sealed end of closing, and the other end is connected with extending shell and is connected with water pump
Water inlet pipe；It is provided with steam outlet pipe on gas outlet valve, water inlet pipe and is provided with water intaking valve；
B）The high temperature reduction slag that reduction furnace slag discharge unit intermittence is fallen is entered by slag inlet contains slag space, passes through steam generator
The heat-transfer surfaces, the cold water transferred heat in steam generator such as heat-exchanging tube bundle progress；
C）The aperture of steam generator water intaking valve and gas outlet valve is correspondingly controlled by water intaking valve and gas outlet valve, makes steam generator
Interior cold water vaporization, output is used for steam needed for Smelting magnesium reduction power injection pump；Reducing slag after cooling is discharged by slag-drip opening,
Slag muck or slag storehouse are transported to by plant equipment.
7. magnesium metal smelt reducing slag exhaust heat recovering method according to claim 6, it is characterised in that in step A, upper to steam
Vapour cylinder is provided with 2 ~ 10 row's heat-exchanging tube bundles with lower steam drum.
8. magnesium metal smelt reducing slag exhaust heat recovering method according to claim 6, it is characterised in that in step C, pass through
Water intaking valve and gas outlet valve correspondingly control the aperture of steam generator water intaking valve and gas outlet valve so that steam outlet pipe pressure is not less than
0.1MPa, the temperature for producing steam is not less than 110 DEG C；The mean temperature of slag-drip opening discharge reducing slag is not higher than 300 DEG C.
9. the magnesium metal smelt reducing slag exhaust heat recovering method according to claim 6 or 8, it is characterised in that in step C,
The aperture of steam generator water intaking valve and gas outlet valve is correspondingly controlled by water intaking valve and gas outlet valve so that steam outlet pipe pressure is
0.1 ~ 0.5MPa, the temperature for producing steam is 110 ~ 150 DEG C；The mean temperature of slag-drip opening discharge reducing slag is 200 ~ 300 DEG C.
10. magnesium metal smelt reducing slag exhaust heat recovering method according to claim 6, it is characterised in that described goes out vapour
The working steam entrance that pipe reduces power injection pump with Smelting magnesium connect setting, Smelting magnesium reduce power injection pump and reduction furnace,
Steam generator connecting pipe is provided with valve on road.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710459188.XA CN107084379A (en) | 2017-06-16 | 2017-06-16 | Magnesium metal smelt reducing slag waste-heat recovery device and its method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710459188.XA CN107084379A (en) | 2017-06-16 | 2017-06-16 | Magnesium metal smelt reducing slag waste-heat recovery device and its method |
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2017
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB191014404A (en) * | 1910-06-14 | 1910-11-24 | George Mitchell | Improvements in Slag Steam Generators. |
| CN1912519A (en) * | 2006-08-21 | 2007-02-14 | 宁夏华源冶金实业有限公司 | System for vacuum pumping by steam produed by reduction dregs afterheat |
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| CN102966934A (en) * | 2012-12-11 | 2013-03-13 | 开泰镁业有限公司 | magnesium smelting reducing slag waste heat boiler |
| CN203731876U (en) * | 2014-02-10 | 2014-07-23 | 南京云泰化工总厂 | Waste heat absorber |
| CN203963923U (en) * | 2014-05-23 | 2014-11-26 | 王澎 | cinder moving bed boiler |
| CN206918977U (en) * | 2017-06-16 | 2018-01-23 | 郑州大学 | Magnesium metal smelt reducing slag waste-heat recovery device |
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