CN106636497A - Method for quickly recovering metal iron in iron-contained slag - Google Patents
Method for quickly recovering metal iron in iron-contained slag Download PDFInfo
- Publication number
- CN106636497A CN106636497A CN201611015123.8A CN201611015123A CN106636497A CN 106636497 A CN106636497 A CN 106636497A CN 201611015123 A CN201611015123 A CN 201611015123A CN 106636497 A CN106636497 A CN 106636497A
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- Prior art keywords
- iron
- magnetic separation
- slag
- particles
- magnetic
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Classifications
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B3/00—General features in the manufacture of pig-iron
- C21B3/04—Recovery of by-products, e.g. slag
- C21B3/06—Treatment of liquid slag
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C1/00—Magnetic separation
- B03C1/02—Magnetic separation acting directly on the substance being separated
- B03C1/30—Combinations with other devices, not otherwise provided for
-
- 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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention discloses a method for quickly recovering metal iron in iron-contained slag. The method is performed according to the following steps: the iron-contained slag is rotationally pelletized to obtain amorphous furnace slag particles and iron shot particles; the amorphous furnace slag particles and the iron shot particles are magnetically separated; and the method uses different densities of slag and iron and different surface tensions for separating the amorphous furnace slag particles from the iron shot particles. In rotary pelletization process, under the effect of centrifugal force and air cooling, the iron-contained slag is quickly pelletized as fine spherical particles for solidification; as furnace slag and metal iron are different in surface tension, the furnace slag particles and the iron shot particles are respectively formed; and as the rotary pelletization cooling speed is faster, the slag particles are too late to crystallize to present an amorphous state for further magnetic separation to thoroughly separate the furnace slag particles from the iron shot particles. The method cancels crushing and grinding procedures in a traditional iron-contained slag iron recovery process, largely saves the recovery cost, and prevents secondary energy waste problem.
Description
Technical field
The present invention relates to metallurgical cinder processing technology field, and in particular to metallic iron in a kind of quick recovery iron content slag
Method.
Background technology
The principal by product discharged from blast furnace when blast furnace slag is manUfaCtUre of pig iron, when furnace temperature reaches 1400-1600 DEG C, stove
Material melting, the ash content in gangue, coke and cosolvent and other impurity that can not be entered in the pig iron in ore is formed with silicic acid
The slag above molten iron is floated over based on salt and aluminate.Some Enterprises are in process of production by raw materials for production condition and operating procedure
Limited, often occurred that slag iron is difficult to detached situation, in the blast furnace cinder of final discharge more rich metallic iron is contained, if
Directly near discarding can both have a strong impact on environmental problem, while be also the significant wastage of resource, for the phenomenon with iron in slag,
Current iron recovery process, after mainly slag is cooled down, is crushed, is ground to cold conditions slag, then again using the side of magnetic separation
Formula reclaims the iron in cold conditions slag, and because cold conditions slag grindability is poor, comminution energy conssumption is high, during resource reclaim, and
New energy waste problem is drawn, while this technique is relatively low to the rate of recovery of metallic iron.
The content of the invention
To solve above technical problem, the present invention provides a kind of method of metallic iron in quick recovery iron content slag, the party
Method eliminates the highly energy-consuming program that slag in current iron recovery process is broken, grind.
Technical scheme is as follows：A kind of method of metallic iron in quick recovery iron content slag, it is critical only that according to the following steps
Carry out：Iron content slag rotation granulation is obtained into amorphous slag granules and iron shot particle, by the amorphous slag granules and iron shot
Grain carries out magnetic separation separation.The technical program is using slag is different with the density of iron, surface tension difference is separated to the two.
During rotation granulation, under centrifugal force with air cooled effect, iron content slag is quickly granulated into tiny spheric granules
And solidify, because slag is different with the surface tension of metallic iron, slag granules and iron shot particle are formed respectively, due to rotation granulation
The very fast slag particles of cooling velocity have little time crystallization amorphous state be presented, further magnetic separation can be completely separated the two.This technology
Scheme eliminates broken, grinding step in traditional iron content slag iron recovery process, greatly save cost recovery, it is to avoid two
Secondary energy waste problem.
As preferred：Above-mentioned rotation granulation is carried out in high-temperature fusant rotation granulating device.
The magnetic separation separation is carried out using magnetic separation separation equipment.
The material Jing device for transporting objects discharged from the rotation granulating device is transported to the magnetic separation separation equipment lower section
Carry out magnetic separation separation.Material conveying is carried out using special device, is conducive to saving human cost.
Above-mentioned rotation granulating device includes splicing cylinder, and granulation revolving cup is provided with the splicing cylinder, and the bottom of the splicing cylinder sets
There is material outlet, the granulation revolving cup is connected with power set.Material is thrown away and granulate by being granulated the centrifugal force of revolving cup
Material, the material particular diameter after granulation is less, without the need for being crushed, being ground.
Pellet cooling device is provided between the inwall of above-mentioned granulation revolving cup and the splicing cylinder.Material Jing coolings after granulation
Afterwards, into solid granulates, particle will not be bonded together again to each other quick solidification.
Above-mentioned magnetic separation separation equipment includes the magnetic separation slide rail of annular, and the magnetic separation slide rail is located at the device for transporting objects
Top, the magnetic separation slide rail is provided with least one magnetic separation magnetic sheet, and the magnetic separation magnetic sheet is connected with driving means.Using this scheme
Drive magnetic separation magnetic sheet to move on magnetic separation slide rail by driving means, can enter when magnetic separation magnetic sheet is located at device for transporting objects top
Row magnetic separation, when magnetic separation magnetic sheet produces device for transporting objects, can put down the amorphous slag granules for magneticly electing, iterative cycles, constantly
Magnetic separation is separated.
Beneficial effect：Using the invention has the beneficial effects as follows using slag is different with the density of iron, surface tension difference is right
The two is separated.During rotation granulation, under centrifugal force with air cooled effect, iron content slag is quickly granulated
For tiny spheric granules and solidify, because slag is different with the surface tension of metallic iron, slag granules and iron shot are formed respectively
Grain, because the very fast slag particles of cooling velocity of rotation granulation have little time crystallization amorphous state is presented, and further magnetic separation can be thoroughly
Separate the two.This technical scheme eliminates the broken, grinding step in traditional iron content slag iron recovery process, greatlys save back
Harvest sheet, it is to avoid secondary energy sources waste problems.
Description of the drawings
Fig. 1 is the structural representation that high-temperature fusant rotates granulating device and magnetic separation separation equipment；
Fig. 2 is the structural representation of magnetic separation separation equipment and device for transporting objects；
Fig. 3 is the A-A ' profiles of Fig. 1.
Specific embodiment
With reference to embodiment and accompanying drawing, the invention will be further described.
As shown in Figure 1-Figure 3, in a kind of quick recovery iron content slag metallic iron method, carry out according to the following steps：
Step (1), is respectively provided with high-temperature fusant rotation granulating device, magnetic separation separation equipment and device for transporting objects 9；
Step (2), iron content slag is centrifuged in high-temperature fusant rotation granulating device, and rotation granulation obtains amorphous state slag
Particle and iron shot particle；
The amorphous state slag granules and iron shot particle are carried out magnetic separation separation by step (3) using magnetic separation separation equipment.
The device for transporting objects 9 is provided between the high-temperature fusant rotation granulating device and magnetic separation separation equipment, from institute
State the material Jing device for transporting objects 9 that high-temperature fusant rotation granulating device discharges to be transported to the magnetic separation separation equipment and carry out magnetic separation
Separate.
The high-temperature fusant rotation granulating device includes being provided with electric machine support in splicing cylinder 1, the splicing cylinder 1, the motor
Frame is provided with motor bearing platform 6, and the top of motor bearing platform 6 is provided with granulation revolving cup 2, the center line of the granulation revolving cup 2 and institute
State splicing cylinder 1 cylinder heart line overlap, it is described granulation revolving cup 2 be connected with power set, the power set be revolving cup motor 5, this turn
The housing of cup motor 5 is arranged on the lower surface of the motor bearing platform 6, and the output shaft of the revolving cup motor 5 passes upwards the electricity
Machine supporting station 6, the bottom surface of the granulation revolving cup 2 is fixedly connected with the output shaft of the revolving cup motor 5, the granulation revolving cup 2
The output shaft dead in line of center line and the revolving cup motor 5.
The wall of cup of the granulation revolving cup 2 is provided with multiple granulation holes 3, and the bottom of the splicing cylinder 1 is provided with material outlet 7,
The upper surface of the motor bearing platform 6 is provided with the revolving cup electromagnet 4 of annular, and the revolving cup electromagnet 4 is around the revolving cup motor 5
Output shaft is arranged, and the revolving cup electromagnet 4 is connected with power line 17, and one end of the power line 17 connects with the revolving cup electromagnet 4
Connect, the other end passes and power supply is connected with after the splicing cylinder 1, and high temperature-resisting protecting jacket, high temperature resistant are enclosed with the power line 17
Protective jacket can protect power line 17 not scorched or premature aging by high temperature.
Pellet cooling device 8, the pellet cooling dress are provided between the granulation revolving cup 2 and the inwall of the splicing cylinder 1
8 are put for ring pipe, the ring pipe is fixedly mounted on the tube port position of the splicing cylinder 1, inwall of the ring pipe along the splicing cylinder 1
One circle is arranged, and the ring pipe is provided with multiple spray coolant mouths, and the spray coolant mouth is towards in the splicing cylinder 1
Wall, spray coolant mouth in cooling procedure with certain pressure constantly towards splicing cylinder 1 inwall spray coolant, ejection it is cold
But liquid dress to strike and be broken up into little particle on the inwall of splicing cylinder 1, exhales towards all angles, expands film-cooled heat.
The device for transporting objects 9 is located at the splicing cylinder 1 and magnetic separation separation equipment lower section, the device for transporting objects 9
For belt conveyor, the both sides of the belt conveyor are provided with along its length striker plate 10, and the material outlet 7 is located at described
The surface of belt conveyor feed end, discharge end of the magnetic separation slide rail 11 near the belt conveyor.
The magnetic separation separation equipment includes the magnetic separation slide rail 11 of annular, and the magnetic separation slide rail 11 is along the device for transporting objects 9
Length direction arrange, the orthographic projection that the track section of the magnetic separation slide rail 11 is downward falls on the device for transporting objects 9, institute
The downward orthographic projection of track for stating the remaining section of magnetic separation slide rail 11 falls in the outside of the device for transporting objects 9, the magnetic separation slide rail 11
At least one magnetic separation magnetic sheet 12 is provided with, the magnetic separation magnetic sheet 12 is connected with driving means.
The driving means include being located at the driving wheel 18 and driven pulley 16 of the top of the magnetic separation slide rail 11, the driving wheel
18 are connected with motor 15, and same driving belt 13 is arranged with the driving wheel 18 and driven pulley 16, and the magnetic separation is slided
Rail 11 is correspondingly arranged with the driving belt 13.
The magnetic separation magnetic sheet 12 includes magnetic sheet housing 12a, and in the magnetic sheet housing 12a magnetic separation electromagnet 12b, the magnetic are provided with
The outer wall of plate housing 12a is fixed with electrode fixed arm 12d, just to being provided with two electrode contact 12c on electrode fixed arm 12d,
Two electrode contact 12c are electrically connected respectively with two power lines of the magnetic separation electromagnet 12b；
One section of energization joint x is provided with the magnetic separation slide rail 11, energization joint x is being located at the device for transporting objects 9 just
Top, energization joint x includes two just to the stick type power source piece x1 for arranging, and two stick type power source piece x1 are along the magnetic
That selects slide rail 11 moves towards setting, and two stick type power source piece x1 connect respectively the both positive and negative polarity of power supply, two stick type power sources
The edge of piece x1 bends respectively inwards, and electrode link slot, the magnetic separation magnetic sheet 12 are formed between two stick type power source piece x1
Along the magnetic separation slide rail 11 when moving towards to slide, two electrode contact 12c enter the electrode link slot, and respectively with it is right
The stick type power source piece x1 for answering is contacted and led to, and when using, the electromagnet of magnetic separation magnetic sheet 12 is being turned to directly over device for transporting objects 9
Afterwards, electrode contact 12c and stick type power source piece x1 is contacted and auto-power on magnetisation, after producing directly over device for transporting objects 9, electricity
Pole joint 12c and stick type power source piece x1 departs from and automatically powers off demagnetization.
The driving belt 13 is provided with four synchronization blocks 14, is correspondingly provided with four cunnings on the magnetic separation slide rail 11 respectively
Block, the top of each synchronization blocks 14 is fixedly connected respectively with the driving belt 13, the bottom of each synchronization blocks 14
It is fixedly connected with the corresponding slide block respectively, a magnetic separation is connected on the lower surface of each synchronization blocks 14
Magnetic sheet 12, the magnetic separation magnetic sheet 12 along the device for transporting objects 9 width arrange, the outer wall of magnetic sheet housing 12a with
The synchronization blocks 14 are fixedly connected.
When using, first iron content slag is added into the granulation revolving cup 2, after being powered to the revolving cup electromagnet 4, slag
In iron (melting) actively to the middle and lower part flowing aggregation of granulation revolving cup 2 by revolving cup motor 5 granulation revolving cup 2 can be driven to rotate
Iron content slag is thrown away using centrifugal force, due to slag, iron density, capillary difference, and by revolving cup electromagnet 4 pairs contain
After the enrichment of iron, the particulate material for throwing away is divided into amorphous slag granules and without iron particle, the purity of iron in amorphous slag granules
It is higher, the amorphous slag granules that throw away and it is rapidly cooled by pellet cooling device 8 without iron particle, will not be adhered again to each other
Together, the two unification falls into device for transporting objects 9 by material outlet 7, and then is transported to magnetic separation separation equipment lower section, magnetic
When selecting separation equipment to operate, the magnetic separation slide rail 11 and the belt conveyor move toward one another, it is so screened after only leave nothing
Iron particle is constantly discharged from the discharge end of device for transporting objects 9, and the amorphous slag granules chosen by magnetic separation magnetic sheet 12 produce material
After conveying device 9, the power-off of magnetic separation magnetic sheet 12 treats that magnetic separation magnetic sheet 12 proceeds to material conveying so as to amorphous slag granules be put down, then
Being powered to magnetic separation magnetic sheet 12 again behind the top of device 9 carries out next round magnetic separation.
Finally it should be noted that foregoing description is only the preferred embodiments of the present invention, the ordinary skill people of this area
Member on the premise of without prejudice to present inventive concept and claim, can make table as multiple types under the enlightenment of the present invention
Show, such conversion is each fallen within protection scope of the present invention.
Claims (7)
1. in a kind of quick recovery iron content slag metallic iron method, it is characterised in that carry out according to the following steps：By iron content slag
Rotation granulation obtains amorphous slag granules and iron shot particle, and the amorphous slag granules and iron shot particle are carried out into magnetic separation separation.
2. in a kind of quick recovery iron content slag according to claim 1 metallic iron method, it is characterised in that：The rotation
Turn granulation is carried out in high-temperature fusant rotation granulating device.
3. in a kind of quick recovery iron content slag according to claim 2 metallic iron method, it is characterised in that：Using magnetic
Separation equipment is selected to carry out the magnetic separation separation.
4. in a kind of quick recovery iron content slag according to claim 3 metallic iron method, it is characterised in that：From described
Material Jing device for transporting objects (9) that rotation granulating device is discharged is transported to the magnetic separation separation equipment lower section and carries out magnetic separation point
From.
5. in a kind of quick recovery iron content slag according to claim 2 metallic iron method, it is characterised in that：The rotation
Turn granulating device including granulation revolving cup (2) is provided with splicing cylinder (1), the splicing cylinder (1), the bottom of the splicing cylinder (1) is provided with
Material outlet (7), granulation revolving cup (2) is connected with power set.
6. in a kind of quick recovery iron content slag according to claim 5 metallic iron method, it is characterised in that：The grain
Change and be provided with pellet cooling device (8) between revolving cup (2) and the inwall of the splicing cylinder (1).
7. in a kind of quick recovery iron content slag according to claim 3 metallic iron method, it is characterised in that：The magnetic
Separation equipment is selected to include the magnetic separation slide rail (11) of annular, the magnetic separation slide rail (11) is positioned at the upper of the device for transporting objects (9)
Side, the magnetic separation slide rail (11) is provided with least one magnetic separation magnetic sheet (12), and the magnetic separation magnetic sheet (12) is connected with driving means.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611015123.8A CN106636497B (en) | 2016-11-18 | 2016-11-18 | A kind of method of metallic iron in quick recycling iron content slag |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611015123.8A CN106636497B (en) | 2016-11-18 | 2016-11-18 | A kind of method of metallic iron in quick recycling iron content slag |
Publications (2)
| Publication Number | Publication Date |
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| CN106636497A true CN106636497A (en) | 2017-05-10 |
| CN106636497B CN106636497B (en) | 2018-11-30 |
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| CN201611015123.8A Active CN106636497B (en) | 2016-11-18 | 2016-11-18 | A kind of method of metallic iron in quick recycling iron content slag |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108246504A (en) * | 2018-01-11 | 2018-07-06 | 乐清市宏牛电气科技有限公司 | A kind of automation iron filings separator |
| CN111111908A (en) * | 2019-12-02 | 2020-05-08 | 宁波西磁磁业发展股份有限公司 | Magnetic plate compensation type belt iron removing machine |
| CN111229462A (en) * | 2020-03-04 | 2020-06-05 | 张淑敏 | Integrated metal mineral separator |
| CN113019643A (en) * | 2021-01-30 | 2021-06-25 | 上海瑢域节能环保科技有限公司 | Energy-saving iron slag recycling equipment |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108246504A (en) * | 2018-01-11 | 2018-07-06 | 乐清市宏牛电气科技有限公司 | A kind of automation iron filings separator |
| CN111111908A (en) * | 2019-12-02 | 2020-05-08 | 宁波西磁磁业发展股份有限公司 | Magnetic plate compensation type belt iron removing machine |
| CN111229462A (en) * | 2020-03-04 | 2020-06-05 | 张淑敏 | Integrated metal mineral separator |
| CN111229462B (en) * | 2020-03-04 | 2022-03-08 | 云南贵丰圆矿业科技开发有限责任公司 | Integrated metal mineral separator |
| CN113019643A (en) * | 2021-01-30 | 2021-06-25 | 上海瑢域节能环保科技有限公司 | Energy-saving iron slag recycling equipment |
| CN113019643B (en) * | 2021-01-30 | 2022-07-01 | 青岛达能环保设备股份有限公司 | Energy-saving iron slag recycling equipment |
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| CN106636497B (en) | 2018-11-30 |
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