CN106801149B - A kind of device and method using reduction magnesium slag waste heat presmelting crude magnesium - Google Patents
A kind of device and method using reduction magnesium slag waste heat presmelting crude magnesium Download PDFInfo
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- CN106801149B CN106801149B CN201710170712.1A CN201710170712A CN106801149B CN 106801149 B CN106801149 B CN 106801149B CN 201710170712 A CN201710170712 A CN 201710170712A CN 106801149 B CN106801149 B CN 106801149B
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- magnesium
- presmelting
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- magnesium slag
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- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
- F27D17/004—Systems for reclaiming waste heat
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- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
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- Life Sciences & Earth Sciences (AREA)
- Materials Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- General Engineering & Computer Science (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
A kind of device and method using reduction magnesium slag waste heat presmelting crude magnesium, presmelting device includes the presmelting room of magnesium slag after capable of collecting reduction, the top of presmelting room is equipped with crude magnesium fixed platform, crude magnesium fixed platform is equipped with multiple crucibles for holding crude magnesium, it is provided with smoke outlet and ash-removing mouth on presmelting room, ash-removing valve is installed on ash-removing mouth.Fritting smelting method is used as thermal medium by the high temperature magnesium slag after reduction and carries out presmelting to crude magnesium, magnesium slag after reduction is injected by high temperature magnesium slag rotating device above presmelting room, after crude magnesium absorbs heat melts to liquid, the magnesium slag for releasing heat is expelled to low temperature magnesium slag rotating device by ash-removing mouth.The present invention can reduce waste of magnesium slag waste heat during Smelting magnesium, improve the efficiency of crude magnesium refining.
Description
Technical field
The present invention relates to smelting techniques, and in particular to a kind of device and side using reduction magnesium slag waste heat presmelting crude magnesium
Method.
Background technology
The magnesium yield in China in 2015 is 85.92 ten thousand tons, and 6-8 tons of magnesium slag is generated by magnesium per ton and is calculated, the magnesium slag of generation
6,000,000 tons or so can be reached, it is still intermittent that current production process reduction furnace, which is slagged tap, and temperature when magnesium slag fresh baked is up to
1200 DEG C, it is 782J/ (kg DEG C) to have huge physical sensible heat, specific heat.If according to the calculating of 25 DEG C of room temperature, when magnesium slag by
1200 DEG C when being down to room temperature, the magnesium slag of 1kg can discharge the heat of about 919kJ.Magnesium slag waste heat in 2015 can convert into 1,140,000 tons of marks
Quasi- coal (the Taiyuan research [D] of the red-hot cold hydration kinetics of magnesium slag of Ji Ke pellets:Institutes Of Technology Of Taiyuan, 2016:2).
The research about magnesium slag UTILIZATION OF VESIDUAL HEAT IN has much at present, for example, Chen Jin is equal clearly, (Chen Jinqing, Xu Xiangbin, Soviet Union can refined
The present situation of magnesium reduction slag UTILIZATION OF VESIDUAL HEAT IN and it is still necessary to solve the problems, such as [J] light metals, 2011 (5):It 48-50.) has studied more than magnesium slag
The present situation of heat utilization and three kinds of capital equipments for summarizing magnesium slag UTILIZATION OF VESIDUAL HEAT IN：Tubular heat exchanger, lag cooler and waste heat pot
The main thought of stove, this method is using magnesium slag waste heat as auxiliary steam indirect utilization.Nearest Yu Jian, it is high it is good etc. (Yu Jian, it is high
It is good, Bai Jianyun magnesium reduction slags afterheat utilizing system [P] Chinese patents：ZL10571643 7,2016.06.29) by magnesium slag waste heat
As combustion air indirect utilization, and patent is delivered.However these methods behave cost that be often higher than waste heat original
Value, is not easy to promote in actual production.Up to the present without a kind of very ideal and ripe Processes and apparatus.
Invention content
It is an object of the invention to, provide a kind of to utilize reduction magnesium slag waste heat fritting the problems in for the above-mentioned prior art
The device and method for refining crude magnesium can reduce waste of magnesium slag waste heat during Smelting magnesium, improve the efficiency of crude magnesium refining.
To achieve the goals above, the present invention utilizes the device for restoring magnesium slag waste heat presmelting crude magnesium：
Presmelting room including that can collect magnesium slag after reduction, the top of presmelting room is equipped with crude magnesium fixed platform, crude magnesium
Fixed platform is equipped with multiple for holding the crucibles of crude magnesium, smoke outlet and ash-removing mouth is provided on presmelting room, on ash-removing mouth
Ash-removing valve is installed, magnesium slag is injected by high temperature magnesium slag rotating device above presmelting room after reduction, and crude magnesium absorbs heat melts
To liquid, the magnesium slag for releasing heat is expelled to low temperature magnesium slag rotating device by ash-removing mouth.
Presmelting room includes that flaring and tapered two parts inner cavity, smoke outlet are opened in flaring part to bore successively from top to bottom
On inner cavity.
The mobile platform of high temperature magnesium slag rotating device is built on the outside of the flaring partial lumen by supporting rack, it is mobile flat
It is magnesium slag entrance between the edge and crude magnesium fixed platform of platform.
Install crucible cover on the crucible additional and to detect the temperature sensor of heating temperature.
The presmelting room is made of steel construction and flame-proof thermal insulation material.
The present invention is included the following steps using the method for the device presmelting crude magnesium of reduction magnesium slag waste heat presmelting crude magnesium：
A. magnesium slag after the reduction of high temperature is delivered to presmelting room by high temperature magnesium slag rotating device；B. the crucible for being contained with crude magnesium is put
It sets in crude magnesium fixed platform；C. after crude magnesium absorbs heat melts to liquid, crucible is moved integrally to refining furnace；D. through overheat
The ash-removing mouth for measuring the magnesium slag from the presmelting room bottom that exchange is expelled to low temperature magnesium slag rotating device, passes through low temperature magnesium slag rotating device
It carries out.
The magnesium slag temperature for being delivered to presmelting room is 800 DEG C~900 DEG C, and the magnesium slag temperature to heat crude magnesium is 750 DEG C.
Compared with prior art, the present invention has following advantageous effect：Using the high temperature magnesium slag after reduction as thermal medium,
It is intermittent that reduction furnace, which is slagged tap, in production process, and temperature when magnesium slag fresh baked is up to 1200 DEG C, has huge physics aobvious
Heat, 1 ton of magnesium, which generates the heat that magnesium slag is discharged, can convert into 0.19 ton of standard coal, and crude magnesium refining total energy consumption converts into standard coal
0.13 ton, it is seen that magnesium slag waste heat is efficiently used to the net quantity of heat for being fully able to meet crude magnesium refining.High temperature magnesium slag goes out furnace temperature
Degree belongs to high-quality heat source, and reduction furnace is run simultaneously with refining furnace in process of production, and reduction furnace constantly generates the high temperature of interval
Magnesium slag, refining furnace constantly melt crude magnesium and absorb magnesium slag waste heat, this is provided for magnesium slag waste heat continuous application in refining process must
Want condition.The present invention constantly consumes magnesium slag waste heat, and entire production process is carried out continuously, by the magnesium slag waste heat centralized collection of interval
It utilizes, reduces energy consumption, save fuel, while reducing CO2Discharge.Presmelting device shifts to an earlier date crude magnesium through the invention
Fusing, saves crude magnesium refining time, improves the efficiency of crude magnesium refining.The magnesium slag of reduction furnace is rapidly transported to presmelting dress
It sets, reduces the air pollution to reduction plant, the negative effects such as heat radiation, so as to improve the working environment of reduction plant.
Presmelting device is constantly by the magnesium slag centralized collection of interval, to also be that transhipment provides a convenient.The present invention it is built and
It builds in project and only needs to add presmelting device, investment is smaller, does not change the main technique of crude magnesium refining, there is prodigious promotion price
Value.
Description of the drawings
Fig. 1 present invention utilizes the process flow chart for restoring magnesium slag waste heat presmelting crude magnesium；
Fig. 2 present invention utilizes the apparatus structure schematic diagram for restoring magnesium slag waste heat presmelting crude magnesium；
In attached drawing：1- high temperature magnesium slag rotating devices；2- crude magnesiums；3- crucible covers；4- crucibles；5- temperature sensors；6- magnesium slags
Entrance；7- supporting racks；8- smoke outlets；9- steel constructions；10- flame-proof thermal insulation materials；11- magnesium slags；12- ash-removing mouths；13- ash-removing valves；
14- low temperature magnesium slag rotating devices.
Specific implementation mode
Present invention will be described in further detail below with reference to the accompanying drawings.
Referring to Fig. 1,2, the device of presmelting crude magnesium of the present invention is set between reduction furnace and refining furnace, and heat source is by also
The high temperature magnesium slag that former stove generates is sent into presmelting device through transfer device and is supplied.
The device of presmelting crude magnesium includes the presmelting room of magnesium slag 11 after capable of collecting reduction, and the top of presmelting room is equipped with
Crude magnesium fixed platform, crude magnesium fixed platform be equipped with it is multiple for holding the crucibles 4 of crude magnesium 2, installed additional on crucible 4 crucible cover 3 with
And to detect the temperature sensor 5 of heating temperature.Smoke outlet 8 and ash-removing mouth 12 are provided on presmelting room, on ash-removing mouth 12
Ash-removing valve 13 is installed, the magnesium slag 11 after reduction is injected by high temperature magnesium slag rotating device 1 above presmelting room, and crude magnesium 2 absorbs
After heat melts to liquid, the magnesium slag 11 for releasing heat is expelled to low temperature magnesium slag rotating device 14 by ash-removing mouth 12.In advance
Working chamber includes that flaring and tapered two parts inner cavity, smoke outlet 8 are opened on flaring partial lumen bore successively from top to bottom, gradually
Expand the mobile platform for building high temperature magnesium slag rotating device 1 on the outside of partial lumen by supporting rack 7, the edge and crude magnesium of mobile platform
It is magnesium slag entrance 6 between fixed platform.Presmelting room is made of steel construction 9 and flame-proof thermal insulation material 10.
The present invention using reduction magnesium slag waste heat presmelting crude magnesium method be：
The magnesium slag 11 that reductive jar is clawed to high temperature is quickly sent to the pre- of crude magnesium refining plant by high temperature magnesium slag rotating device 1
The magnesium slag entrance 6 of melting crude magnesium device.Magnesium slag 11 falls into the center of device by magnesium slag entrance 6, then by the earthenware equipped with crude magnesium 2
Crucible 4 is whole to be put into presmelting device.After crude magnesium 2 absorbs heat melts to liquid, 4 entirety of crucible is moved into temperature controllable precise
Refining furnace is further processed.The magnesium slag 11 of high temperature is constantly sent to presmelting device from reduction plant, and heat source is provided for crude magnesium fusing,
Crude magnesium fusing constantly absorbs the heat of high temperature magnesium slag, and by heat exchange, the temperature of magnesium slag 11 continuously decreases from top to bottom,
Natural degradation after temperature is less than 300 DEG C.After magnesium slag 11 is deposited to certain altitude, ash-removing valve 13 can be opened, by bottom powder
The magnesium slag 11 of change is transported by low temperature magnesium slag rotating device 14.The flue gas generated in stove is discharged from the smoke outlet 8 of presmelting device.
It will be understood by those of skill in the art that modifying to the technique and smelting apparatus of the present invention or replacing on an equal basis
It changes, is not all detached from technical scheme of the present invention or spirit and scope, the claims of the present invention should all be contained
In.
Claims (5)
1. a kind of device using reduction magnesium slag waste heat presmelting crude magnesium, it is characterised in that：Including can collect reduction after magnesium slag
(11) top of presmelting room, presmelting room is equipped with crude magnesium fixed platform, and crude magnesium fixed platform is equipped with multiple for holding
The crucible (4) of crude magnesium (2) is provided with smoke outlet (8) and ash-removing mouth (12) on presmelting room, and ash-removing mouth installs ash-removing valve on (12)
(13), magnesium slag (11) is injected by high temperature magnesium slag rotating device (1) above presmelting room after reduction, and crude magnesium (2) absorbs heat
After being melted to liquid, the magnesium slag (11) for releasing heat is expelled to low temperature magnesium slag rotating device (14) by ash-removing mouth (12)；
The presmelting room includes that flaring and tapered two parts inner cavity, smoke outlet (8) are opened in flaring portion to bore successively from top to bottom
Divide on inner cavity；Install crucible cover (3) on the crucible (4) additional and to detect the temperature sensor (5) of heating temperature.
2. utilizing the device of reduction magnesium slag waste heat presmelting crude magnesium according to claim 1, it is characterised in that：The flaring
Build the mobile platform of high temperature magnesium slag rotating device (1) on the outside of partial lumen by supporting rack (7), the edge of mobile platform with it is thick
It is magnesium slag entrance (6) between magnesium fixed platform.
3. utilizing the device of reduction magnesium slag waste heat presmelting crude magnesium according to claim 1, it is characterised in that：The fritting
Refining room is made of steel construction (9) and flame-proof thermal insulation material (10).
4. a kind of method using the device presmelting crude magnesium for utilizing reduction magnesium slag waste heat presmelting crude magnesium described in claim 1,
It is characterized by comprising the following steps：A. magnesium slag (11) after the reduction of high temperature is delivered to by high temperature magnesium slag rotating device (1)
Presmelting room；B. the crucible (4) for being contained with crude magnesium (2) is placed in crude magnesium fixed platform；C. crude magnesium (2) absorbs heat melts
To liquid, crucible (4) is moved integrally to refining furnace；D. magnesium slag (11) putting from presmelting room bottom Jing Guo heat exchange
Grey mouth (12) is expelled to low temperature magnesium slag rotating device (14), is carried out by low temperature magnesium slag rotating device (14).
5. the method for presmelting crude magnesium according to claim 4, it is characterised in that：It is delivered to magnesium slag (11) temperature of presmelting room
Degree is 800 DEG C~900 DEG C, and magnesium slag (11) temperature to heat crude magnesium (2) is 750 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710170712.1A CN106801149B (en) | 2017-03-21 | 2017-03-21 | A kind of device and method using reduction magnesium slag waste heat presmelting crude magnesium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710170712.1A CN106801149B (en) | 2017-03-21 | 2017-03-21 | A kind of device and method using reduction magnesium slag waste heat presmelting crude magnesium |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106801149A CN106801149A (en) | 2017-06-06 |
| CN106801149B true CN106801149B (en) | 2018-08-21 |
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| CN201710170712.1A Active CN106801149B (en) | 2017-03-21 | 2017-03-21 | A kind of device and method using reduction magnesium slag waste heat presmelting crude magnesium |
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| CN114214527A (en) * | 2022-01-17 | 2022-03-22 | 遵义钛业股份有限公司 | Refining tank for crude magnesium |
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| JP3950999B2 (en) * | 2003-09-17 | 2007-08-01 | 本田技研工業株式会社 | Waste heat recovery method and waste heat recovery device for swirl type combustion / melting furnace |
| 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 |
| CN206706172U (en) * | 2017-03-21 | 2017-12-05 | 郭世平 | It is a kind of to utilize the device for reducing magnesium slag waste heat presmelting crude magnesium |
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