CN106399668A - System and method for treating siderite in manner of combining rotary hearth furnace with gas melt separation furnace - Google Patents
System and method for treating siderite in manner of combining rotary hearth furnace with gas melt separation furnace Download PDFInfo
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- CN106399668A CN106399668A CN201611041046.3A CN201611041046A CN106399668A CN 106399668 A CN106399668 A CN 106399668A CN 201611041046 A CN201611041046 A CN 201611041046A CN 106399668 A CN106399668 A CN 106399668A
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- rotary hearth
- hearth furnace
- furnace
- discharging opening
- siderite
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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
- C22B1/00—Preliminary treatment of ores or scrap
- C22B1/02—Roasting processes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C21/00—Disintegrating plant with or without drying of the material
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B13/00—Making spongy iron or liquid steel, by direct processes
- C21B13/0006—Making spongy iron or liquid steel, by direct processes obtaining iron or steel in a molten state
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B13/00—Making spongy iron or liquid steel, by direct processes
- C21B13/14—Multi-stage processes processes carried out in different vessels or furnaces
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- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
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- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
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- Food Science & Technology (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Manufacture Of Iron (AREA)
Abstract
The invention discloses a system and method for treating siderite in a manner of combining a rotary hearth furnace with a gas melt separation furnace. The system comprises the rotary hearth furnace and the gas melt separation furnace; the rotary hearth furnace comprises a feeding opening, a discharging opening, a reducing agent inlet and a retaining wall; the retaining wall is located in a furnace body of the rotary hearth furnace, the annular space in the furnace body is divided into a magnetizing roasting area and a reducing roasting area, the feeding opening of the rotary hearth furnace is located in the magnetizing roasting area, the discharging opening of the rotary hearth furnace is formed in the reducing roasting area, and the reducing agent inlet is formed in the furnace top, away from the end of the discharging opening, of the reducing roasting area. According to the system and method, magnetizing roasting and reducing roasting of siderite are completed in the rotary hearth furnace, the metallization ratio of dry pellets is high, the magnetizing effect is good, and the grade of molten iron obtained through melting separation of the gas melt separation furnace is high.
Description
Technical field
The invention belongs to technical field of smelting, what more particularly, to a kind of rotary hearth furnace joint combustion gas melted that point stove processes siderite is
System and method.
Background technology
Recently as the fast development of steel industry, China is big to the mining inetesity of iron mineral resource, comprehensive utilization ratio
The continuous increase of low and geologic prospect difficulty so that geological conditions is good, resource grade is high, sorting is good iron ore deposit just by
Decrescence few, mineral resources sustainable supply ability declines, and reserved resources are not enough, and active development utilizes refractory iron ore and low-grade
Iron ore resource, could effectively expand China can industrial utilization iron ore resource amount, reduce external dependence degree, ensure iron ore
The safety of supply.
The crystal of siderite is in rhombohedron shape, short cylinder or scalenohedron shape.Generally in pelletized form, earthy, compact massive
Aggregation.China contains iron ore resource 18.34 hundred million tons of the proved reserves of siderite, accounts for China's iron ore proved reserves
3.4%, separately there is 18.21 hundred million tons of reserves, be concentrated mainly on more than 10, Guizhou of China, Xinjiang, Shaanxi, Liaoning, Jilin etc.
Area, especially accounts for such iron ore resource gross reserves national in several western save (autonomous region) such as Guizhou, Shaanxi, Gansu and Qinghai
More than 50%.Because magnesium, manganese endoplasm with as phenomenon very universal, most siderites theory grades 32%～45%, are sold
Difficulty, affects developer's enthusiasm.
Have currently for the main application technology of difficult ore dressing containing siderite：Reduction roasting-magnetic separation, high intensity magnetic separation and flotation and
Combined sorting technology etc..Because its density, specific susceptibility are all relatively low, a lot of siderites are often close with chlorite, garnet etc. in addition
Degree and the gangue mineral symbiosis that is more or less the same therewith of specific susceptibility, washability is poor.
Content of the invention
In order to solve the above problems, the present invention provide a kind of rotary hearth furnace joint combustion gas melt point stove process the system of siderite with
Method, completes magnetizing roast and the reduction roasting of siderite in rotary hearth furnace, and the degree of metalization of dry bulb group is high, and combustion gas is melted point stove and melted
The molten iron grade separately won is high.
An object of the present invention is to provide a kind of rotary hearth furnace joint combustion gas to melt the system that point stove processes siderite, including turn
A point stove is melted in bottom stove and combustion gas；
Described rotary hearth furnace includes feeding mouth, discharging opening, reducing agent entrance and barricade,
Described barricade is located in the body of heater of described rotary hearth furnace, and the annular space in described body of heater is divided into magnetizing roast area
With reduction roasting area, positioned at described magnetizing roast area, described rotary hearth furnace discharging opening is positioned at described reduction for described rotary hearth furnace feeding mouth
Roast area, described reducing agent entrance is located at the furnace roof away from discharge port end for the described reduction roasting area；
Described combustion gas is melted a point stove and is included feeding mouth and discharging opening；
Described rotary hearth furnace discharging opening connects described combustion gas and melts a point stove feeding mouth.
Rotary hearth furnace is used for magnetizing roast and the reduction roasting of siderite, obtains metallized pellet.Combustion gas is melted point stove and is used for gold
Belong to molten point of pellet, obtain molten iron.
In the present invention, described system further includes atomizer mill, pelletizer and drying device.Described atomizer mill includes discharging
Mouthful；Described pelletizer includes feeding mouth and discharging opening；Described drying device includes feeding mouth and discharging opening；Described atomizer mill discharging
Mouth connects described pelletizer feeding mouth, and described pelletizer discharging opening connects described drying device feeding mouth, and described drying device goes out
Material mouth connects described rotary hearth furnace feeding mouth.
Atomizer mill is used for siderite is finely ground to the granularity needed for subsequent treatment.Pelletizer is used for the siderite that will mix
Grain pelletizing.Drying device is used for the drying of pelletizing, prepares for follow-up roasting.
Specifically, the radian of described magnetizing roast area annular region is 120 °～180 °.
Specifically, the sector region radian between described rotary hearth furnace feeding mouth and rotary hearth furnace discharging opening is 10 °～15 °.Turn
It is provided with a barricade in sector region between bottom stove feeding mouth and rotary hearth furnace discharging opening.
Further, described barricade bottom and the distance of the furnace bottom upper surface of described rotary hearth furnace are 10～20cm.Barricade bottom
The distance of portion to the furnace bottom upper surface of rotary hearth furnace should ensure passing through of material, ensure magnetizing roast area atmosphere again and go back
Former roast area atmosphere does not interfere with each other.
It is a further object of the present invention to provide a kind of method that utilization said system processes siderite, comprise the steps：
A, by siderite fine grinding, pelletizing, obtain dry bulb group after being dried；
B, described dry bulb is rolled into a ball and sends into described rotary hearth furnace, first carry out magnetizing roast, after carry out reduction roasting, obtain metallization
Pelletizing, reducing agent enters rotary hearth furnace by described reducing agent entrance, will be described when described dry bulb is rolled into a ball and entered described reduction roasting area
One layer of reducing agent of dry bulb group's uniform fold；
C, metallized pellet sent into combustion gas with addition of quick lime melt melting down 0.5～1.5h after the fusing of point stove, obtain molten iron and
Slag.
In the present invention, described rotary hearth furnace magnetizing roast area temperature be 500～800 DEG C, reduction roasting area temperature be 1200～
1300 DEG C, the furnace bottom of described rotary hearth furnace rotates a circle the time for 1.5～3h.
Specifically, the mass percent that the siderite in step A, described siderite being finely ground to granularity≤200 mesh accounts for exists
More than 85%, described dry bulb granule footpath is 8～16mm.
Further, in described reducing agent, the mass component of carbon is not less than 80%, and described reducing agent granularity is 2～5mm.
Preferably, the mass ratio of metallized pellet described in step C and quick lime is 1:0.05～0.15.
In the present invention, siderite (FeCO3) reaction of decomposing when being heated to uniform temperature, release carbon dioxide gass
Body, generates Fe3O4, Fe after magnetizing roast3O4It is easier to be reduced.
The system and method that point stove processes siderite are melted in the rotary hearth furnace joint combustion gas of the present invention, by the magnetizing roast of siderite
Integrally complete in rotary hearth furnace with reduction roasting, the degree of metalization of dry bulb group is high；Reduction roasting area makes full use of magnetizing roast area
The sensible heat of dry bulb group, reducing energy consumption；Metallized pellet is hot to enter molten point of stove of combustion gas, melts good separating effect.
Brief description
Fig. 1 is that the system schematic that point stove processes siderite is melted in rotary hearth furnace joint combustion gas of the present invention；
Fig. 2 is the rotary hearth furnace reduction agent entrance partial view of the present invention；
Fig. 3 is the method flow diagram of the system process siderite of the present invention.
In figure：
1- atomizer mill；2- pelletizer；3- drying device；4- rotary hearth furnace；
401- rotary hearth furnace feeding mouth；402- rotary hearth furnace discharging opening；403- barricade；404- magnetizing roast area；405- reduction roasting
Burn area；406- reducing agent entrance；
A point stove is melted in 5- combustion gas.
Specific embodiment
Below in conjunction with drawings and Examples, the specific embodiment of the present invention is described in more details, so that energy
The advantage enough more fully understanding the solution of the present invention and its various aspects.However, specific embodiments described below and enforcement
Example is only descriptive purpose, rather than limitation of the present invention.
As shown in Figure 1, on the one hand, the present invention provides a kind of rotary hearth furnace joint combustion gas to melt the system that point stove processes siderite,
Including：A point stove 5 is melted in atomizer mill 1, pelletizer 2, drying device 3, rotary hearth furnace 4 and combustion gas.
Atomizer mill 1 includes feeding mouth and discharging opening.Atomizer mill 1 is used for siderite is finely ground to the grain needed for subsequent treatment
Degree.
Pelletizer 2 includes feeding mouth and discharging opening.Pelletizer 2 is used for siderite granule pelletizing.Spherical material is more sharp
In thermally equivalent in rotary hearth furnace.It is good that suitable pellet size makes pelletizing conduct heat, and reaches good reduction effect.
Drying device 3 includes feeding mouth and discharging opening.Drying device 3 is used for the drying of pelletizing, prepares for follow-up roasting.
Rotary hearth furnace 4 is used for magnetizing roast and the reduction roasting of siderite, obtains metallized pellet, siderite is in rotary hearth furnace 4
Middle first carry out magnetizing roast, then carry out reduction roasting, magnetic efficiency is good, degree of metalization is high.
Combustion gas is melted a point stove 5 and is included feeding mouth and discharging opening.Combustion gas melts point stove 5 for molten point of metallized pellet, extracts
Ferrum in metallized pellet, obtains molten iron.
As depicted in figs. 1 and 2, rotary hearth furnace 4 includes feeding mouth 401, discharging opening 402, barricade 403 and reducing agent entrance 406.
Barricade 403 is located at furnace roof, lateral wall and the medial wall connecting body of heater in the body of heater of rotary hearth furnace, will be empty for the annular in described body of heater
Between be divided into magnetizing roast area 404 and reduction roasting area 405.Rotary hearth furnace feeding mouth 401 is located at magnetizing roast area 404, rotary hearth furnace
Discharging opening 402 is located at reduction roasting area 405, and reducing agent entrance 406 is located at the furnace roof away from discharge port end for the reduction roasting area 405.
In example in the present invention, reducing agent entrance 406 is located at furnace roof, is easy to reducing agent and enters rotary hearth furnace 4.Reducing agent entrance
406 are arranged on reduction roasting area 405 away from rotary hearth furnace discharge port end.Reducing agent entrance 406 is had in the horizontal direction with barricade 403
Certain distance is so that when dry bulb group enters reduction by burning area 405, dry bulb is rolled into a ball one layer of reducing agent of uniform fold.
Dotted arrow in Fig. 1 and Fig. 2 represents the direction of motion of material in rotary hearth furnace.The rotarily driving of rotary hearth furnace 4 furnace bottom
Material movement.Material enters magnetizing roast area 404 by rotary hearth furnace feeding mouth 401, enters reduction roasting area after magnetizing roast
405, the material after reduction roasting discharges rotary hearth furnace through rotary hearth furnace discharging opening 402.Enter combustion gas through the material that rotary hearth furnace 4 is processed to melt
Divide stove 5, obtain product after treatment.
Atomizer mill 1 discharging opening connects pelletizer 2 feeding mouth, and pelletizer 2 discharging opening connects drying device 3 feeding mouth, is dried
Device 3 discharging opening connects rotary hearth furnace 4 feeding mouth.Rotary hearth furnace 4 discharging opening connects combustion gas and melts point stove 5 feeding mouth.
Specifically, the radian of magnetizing roast area 404 annular region of the embodiment of the present invention is 120 °～180 °.
Specifically, the sector region arc between the rotary hearth furnace feeding mouth 401 of the embodiment of the present invention and rotary hearth furnace discharging opening 402
Spend for 10 °～15 °.It is provided with a barricade in sector region between rotary hearth furnace feeding mouth 401 and rotary hearth furnace discharging opening 402.
Rotary hearth furnace feeding mouth 401 and the position setting of rotary hearth furnace discharging opening 402, extend the time in rotary hearth furnace for the dry bulb group as far as possible.
Further, in the embodiment of the present invention, the distance of the furnace bottom upper surface of barricade bottom and described rotary hearth furnace is 10～
20cm.The distance of barricade bottom to the furnace bottom upper surface of rotary hearth furnace should ensure passing through of material, ensures Roasting again
Burn area's atmosphere and reduction roasting area atmosphere does not interfere with each other.
On the other hand, as shown in figure 3, the embodiment of the present invention provides a kind of method of utilization said system process siderite,
Comprise the steps：
1st, the mass percent that the siderite that siderite is finely ground to granularity≤200 mesh accounts for is more than 85%, pelletizing, is dried
Obtain dry bulb group afterwards, dry bulb granule footpath is 8～16mm；
2nd, described dry bulb is rolled into a ball and sends into described rotary hearth furnace, first carry out magnetizing roast, after carry out reduction roasting, obtain metallization
Pelletizing, magnetizing roast area temperature is 500～800 DEG C, and reduction roasting area temperature is 1200～1300 DEG C, and reducing agent is by described reduction
Agent entrance enters rotary hearth furnace, when described dry bulb is rolled into a ball and entered described reduction roasting area by the uniform fold one floor reduction of described dry bulb group
Agent, the furnace bottom of rotary hearth furnace rotates a circle the time for 1.5～3h；
3rd, metallized pellet is sent into combustion gas with addition of quick lime and melts melting down 0.5～1.5h after the fusing of point stove, obtain molten iron and
The mass ratio of slag, metallized pellet and quick lime is 1:0.05～0.15.
Further, in described reducing agent, the mass component of carbon is not less than 80%, and reducing agent granularity is 2～5mm.
In the embodiment of the present invention, siderite (FeCO3) reaction of decomposing when being heated to uniform temperature, release dioxy
Change carbon gas, generate Fe3O4, Fe after magnetizing roast3O4It is easier to be reduced.
The system and method that point stove processes siderite are melted in rotary hearth furnace joint combustion gas provided in an embodiment of the present invention, by siderite
After preparing pelletizing, send into rotary hearth furnace, siderite integration in rotary hearth furnace completes magnetizing roast and reduction roasting, the gold of dry bulb group
Belong to rate high；Reduction roasting area makes full use of the sensible heat of dry bulb group of magnetizing roast area, reducing energy consumption；The hot entrance of metallized pellet
A point stove is melted in combustion gas, melts good separating effect, cost-effective；System structure is simple, is conducive to batch processing siderite.
Embodiment 1
The mass ratio that the granule that certain siderite is milled to granularity≤200 mesh accounts for is 86.57%, pelletizing (pelletizing particle diameter 8～
12mm), enter from rotary hearth furnace feeding mouth after being dried, magnetizing roast area radian is 130 °, 500 DEG C of temperature control, reduction roasting area
1250 DEG C of temperature control, furnace bottom rotates a circle the time for 2h, when the dry bulb group after magnetizing roast enters reduction roasting area, reduction coal
(the mass component of C：81.03%, granularity 2mm) it is paved with dry bulb group from reducing agent entrance, the dry bulb group being paved with reduction coal is in reduction
Roast area is reduced into metallized pellet and discharges from rotary hearth furnace discharging opening.The thermal state metal pellet that reduction is discharged is according to 1:
0.05 enters combustion gas with addition of quick lime melts melting down 0.5h acquisition molten iron and slag after point stove fusing.
Embodiment 2
The mass ratio that the granule that certain siderite is milled to granularity≤200 mesh accounts for is 87.63%, pelletizing (pelletizing particle diameter 10～
14mm), enter from rotary hearth furnace feeding mouth after being dried, magnetizing roast area radian is 170 °, 700 DEG C of temperature control, reduction roasting area
1200 DEG C of temperature control, furnace bottom rotates a circle the time for 3h, when the dry bulb group after magnetizing roast enters reduction roasting area, reduction coal
(the mass component of C：81.31%, granularity 5mm) it is paved with dry bulb group from reducing agent entrance, the dry bulb group being paved with reduction coal is in reduction
Roast area is reduced into metallized pellet and discharges from rotary hearth furnace discharging opening.The thermal state metal pellet that reduction is discharged is according to 1:
0.1 enters combustion gas with addition of quick lime melts melting down 0.9h acquisition molten iron and slag after point stove fusing.
Embodiment 3
The mass ratio that the granule that certain siderite is milled to granularity≤200 mesh accounts for is 88.78%, pelletizing (pelletizing particle diameter 12～
16mm), enter from rotary hearth furnace feeding mouth after being dried, magnetizing roast area radian is 150 °, 800 DEG C of temperature control, reduction roasting area
1300 DEG C of temperature control, furnace bottom rotates a circle the time for 1.5h, when the dry bulb group after magnetizing roast enters reduction roasting area, semi-coke
(the mass component of C：82.31%, granularity 4mm) it is paved with dry bulb group from reducing agent entrance, the dry bulb group being paved with semi-coke is in reduction roasting
Burn area and be reduced into metallized pellet from the discharge of rotary hearth furnace discharging opening.The thermal state metal pellet that reduction is discharged is according to 1:0.15
Enter combustion gas with addition of quick lime and melt melting down 1.5h acquisition molten iron and slag after point stove fusing.
It should be noted that each embodiment above by reference to described by accompanying drawing only limits this in order to illustrate rather than
The scope of invention, it will be understood by those within the art that, right under the premise without departing from the spirit and scope of the present invention
Modification or equivalent that the present invention is carried out, all should cover within the scope of the present invention.Additionally, indication unless the context
Outward, the word occurring in the singular includes plural form, and vice versa.In addition, unless stated otherwise, then any embodiment
All or part of can use in conjunction with all or part of of any other embodiment.
Claims (10)
1. the system that point stove processes siderite is melted in a kind of rotary hearth furnace joint combustion gas, melts a point stove including rotary hearth furnace and combustion gas,
Described rotary hearth furnace includes feeding mouth, discharging opening, reducing agent entrance and barricade,
Described barricade is located in the body of heater of described rotary hearth furnace, the annular space in described body of heater is divided into magnetizing roast area and goes back
Former roast area, described rotary hearth furnace feeding mouth is located at described magnetizing roast area, and described rotary hearth furnace discharging opening is located at described reduction roasting
Area, described reducing agent entrance is located at the furnace roof away from discharge port end for the described reduction roasting area；
Described combustion gas is melted a point stove and is included feeding mouth and discharging opening；
Described rotary hearth furnace discharging opening connects described combustion gas and melts a point stove feeding mouth.
2. system according to claim 1 is it is characterised in that described system further includes atomizer mill, pelletizer and does
Dry device,
Described atomizer mill includes discharging opening；
Described pelletizer includes feeding mouth and discharging opening；
Described drying device includes feeding mouth and discharging opening；
Described atomizer mill discharging opening connects described pelletizer feeding mouth, and described pelletizer discharging opening connects described drying device pan feeding
Mouthful, described drying device discharging opening connects described rotary hearth furnace feeding mouth.
3. system according to claim 1 it is characterised in that described magnetizing roast area annular region radian be 120 °～
180°.
4. system according to claim 1 is it is characterised in that between described rotary hearth furnace feeding mouth and rotary hearth furnace discharging opening
Sector region radian is 10 °～15 °.
5. system according to claim 1 is it is characterised in that the furnace bottom upper surface of described barricade bottom and described rotary hearth furnace
Distance be 10～20cm.
6. a kind of arbitrary described system of utilization claim 1～5 processes the method for siderite it is characterised in that including step：
A, by siderite fine grinding, pelletizing, obtain dry bulb group after being dried；
B, described dry bulb is rolled into a ball and sends into described rotary hearth furnace, first carry out magnetizing roast, after carry out reduction roasting, obtain metallization ball
Group, reducing agent enters rotary hearth furnace by described reducing agent entrance, will be described dry when described dry bulb is rolled into a ball and entered described reduction roasting area
One layer of reducing agent of pelletizing uniform fold；
C, metallized pellet is sent into combustion gas with addition of quick lime melt melting down 0.5～1.5h after the fusing of point stove, obtain molten iron and slag.
7. method according to claim 6 is it is characterised in that described rotary hearth furnace magnetizing roast area temperature is 500～800
DEG C, reduction roasting area temperature is 1200～1300 DEG C, and the furnace bottom of described rotary hearth furnace rotates a circle the time for 1.5～3h.
8. method according to claim 6 is it is characterised in that be finely ground to granularity≤200 mesh by described siderite in step A
The mass percent that accounts for of siderite more than 85%, described dry bulb granule footpath is 8～16mm.
9. method according to claim 6 it is characterised in that in described reducing agent the mass component of carbon be not less than 80%,
Described reducing agent granularity is 2～5mm.
10. method according to claim 6 is it is characterised in that the quality of metallized pellet described in step C and quick lime
Than for 1:0.05～0.15.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611041046.3A CN106399668A (en) | 2016-11-22 | 2016-11-22 | System and method for treating siderite in manner of combining rotary hearth furnace with gas melt separation furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611041046.3A CN106399668A (en) | 2016-11-22 | 2016-11-22 | System and method for treating siderite in manner of combining rotary hearth furnace with gas melt separation furnace |
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| CN106399668A true CN106399668A (en) | 2017-02-15 |
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ID=58082150
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| Application Number | Title | Priority Date | Filing Date |
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| CN201611041046.3A Pending CN106399668A (en) | 2016-11-22 | 2016-11-22 | System and method for treating siderite in manner of combining rotary hearth furnace with gas melt separation furnace |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU726199A1 (en) * | 1977-06-23 | 1980-04-05 | Всесоюзный Научно-Исследовательский Институт Металлургической Тепло- Техники | Method of siderite ore preparation for blast casting |
| CN1995411A (en) * | 2006-12-26 | 2007-07-11 | 周云富 | Process for producing iron finished ore powder utilizing low grade siderite |
| CN102634621A (en) * | 2012-04-09 | 2012-08-15 | 北京神雾环境能源科技集团股份有限公司 | Device and method for treating refractory iron ore |
| CN206256122U (en) * | 2016-11-22 | 2017-06-16 | 江苏省冶金设计院有限公司 | The system that point stove processes siderite is melted in a kind of rotary hearth furnace joint combustion gas |
-
2016
- 2016-11-22 CN CN201611041046.3A patent/CN106399668A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU726199A1 (en) * | 1977-06-23 | 1980-04-05 | Всесоюзный Научно-Исследовательский Институт Металлургической Тепло- Техники | Method of siderite ore preparation for blast casting |
| CN1995411A (en) * | 2006-12-26 | 2007-07-11 | 周云富 | Process for producing iron finished ore powder utilizing low grade siderite |
| CN102634621A (en) * | 2012-04-09 | 2012-08-15 | 北京神雾环境能源科技集团股份有限公司 | Device and method for treating refractory iron ore |
| CN206256122U (en) * | 2016-11-22 | 2017-06-16 | 江苏省冶金设计院有限公司 | The system that point stove processes siderite is melted in a kind of rotary hearth furnace joint combustion gas |
Non-Patent Citations (1)
| Title |
|---|
| 高金涛等: "转底炉分区域供热研究", 《北京科技大学学报》 * |
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