CN106381357A - System and method for treating siderites by using rotary hearth furnace - Google Patents
System and method for treating siderites by using rotary hearth furnace Download PDFInfo
- Publication number
- CN106381357A CN106381357A CN201611041025.1A CN201611041025A CN106381357A CN 106381357 A CN106381357 A CN 106381357A CN 201611041025 A CN201611041025 A CN 201611041025A CN 106381357 A CN106381357 A CN 106381357A
- Authority
- CN
- China
- Prior art keywords
- rotary hearth
- hearth furnace
- discharging opening
- barricade
- feeding mouth
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B13/00—Making spongy iron or liquid steel, by direct processes
- C21B13/10—Making spongy iron or liquid steel, by direct processes in hearth-type furnaces
- C21B13/105—Rotary hearth-type furnaces
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacture Of Iron (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention discloses a system and method for treating siderites by using a rotary hearth furnace. The system comprises the rotary hearth furnace and a gas melting furnace; the rotary hearth furnace comprises a feeding hole, a discharging hole and a retaining wall, the retaining wall is located inside a furnace body of the rotary hearth furnace and is used for partitioning an annular space inside the furnace body into a magnetization roasting region and a reduction roasting region, the retaining wall comprises a hollow retaining wall and a solid retaining wall, a reducing agent inlet is formed in the top of the hollow retaining wall, the inside of the hollow retaining wall is vertically connected, the feeding hole of the rotary hearth furnace is located in the magnetization roasting region, and the discharging hole of the rotary hearth furnace is located in the reduction roasting region; and the gas melting furnace comprises a feeding hole and a discharging hole. By using the system and method disclosed by the invention, the magnetization roasting and reduction roasting of siderites are finished in the rotary hearth furnace, the magnetization effect is good, and the metallization ratio is high; the grade of molten iron obtained by the gas melting furnace is high; and the system is low in energy consumption and cost.
Description
Technical field
The invention belongs to technical field of smelting, the system and method that more particularly, to a kind of rotary hearth furnace processes siderite.
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
Aggregate.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
Present invention contemplates that proposing the system and method that a kind of rotary hearth furnace processes siderite, rotary hearth furnace completes siderite
Magnetizing roast and reduction roasting, reduction effect is good；Combustion gas is melted point stove and is melted the molten iron grade height separately winning；System energy consumption is low, cost
Little.
An object of the present invention is the system providing a kind of rotary hearth furnace to process siderite, melts including rotary hearth furnace and combustion gas and divides
Stove,
Described rotary hearth furnace includes feeding mouth, discharging opening and barricade, and described barricade is located in the body of heater of described rotary hearth furnace, by institute
State the annular space in body of heater and be divided into magnetizing roast area and reduction roasting area, described barricade includes hollow barricade and solid gear
Wall, described hollow barricade top is provided with reducing agent entrance, described hollow barricade inside up/down perforation, described rotary hearth furnace feeding mouth position
In described magnetizing roast area, described rotary hearth furnace discharging opening is located at 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 dry bulb group, obtains metallized pellet.Combustion gas is melted point stove and is used for gold
The fusing belonging to pellet separates, and obtains high-grade molten iron.
According to the furnace bottom direction of rotation of rotary hearth furnace, in dry bulb group, the setting of reduction roasting area is entered by magnetizing roast area hollow
Barricade, hollow barricade enters the passage of rotary hearth furnace as reducing agent.Rotary hearth furnace feeding mouth is located at magnetizing roast area solid barricade end,
Rotary hearth furnace discharging opening is located at reduction roasting area solid barricade end.
In the present invention, described system further includes atomizer mill, pelletizer and drying 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
Feeding mouth, described drying device discharging opening 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 making siderite particle
Ball.Drying device is used for the drying of pelletizing, prepares for follow-up roasting.
Specifically, the space in rotary hearth furnace is annular, and 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 °.Real
In sector region between rotary hearth furnace feeding mouth and rotary hearth furnace discharging opening for the heart dams setting.
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, described 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 iron
Water 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.
As preferred scheme, the quality hundred that the siderite in step A, described siderite being finely ground to granularity≤200 mesh accounts for
Divide ratio more than 85%, described dry bulb granule footpath is 8～16mm.
As preferred scheme, in described reducing agent, the mass component of carbon is not less than 80%, described reducing agent granularity be 1～
4mm.
As preferred scheme, metallized pellet described in step C is 1 with the mass ratio of quick lime:0.05～0.15.
The system and method that the rotary hearth furnace that the present invention provides processes siderite, siderite are prepared after pelletizing, in rotary hearth furnace
Complete magnetizing roast and reduction roasting, reduction effect is good；Reducing agent passes through hollow barricade and enters rotary hearth furnace, prevents reducing agent from falling
There is burning and uneven cloth in lower process；Reduction roasting area makes full use of dry bulb group of magnetizing roast area sensible heat, and energy consumption is little, cost
Low；Dry bulb group's hot charging enters combustion gas and melts a point stove, melts good separating effect, and the molten iron grade of acquisition is high.
Brief description
Fig. 1 is the system schematic that rotary hearth furnace of the present invention processes siderite；
Fig. 2 is rotary hearth furnace of the present invention hollow barricade partial view；
Fig. 3 is the flow chart 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- magnetizing roast area；404- reduction roasting area；405-
Hollow barricade；The solid barricade of 406-；407- 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 embodiment of the present invention provides a kind of rotary hearth furnace to process the system of siderite, including：Fine grinding
A point stove 5 is melted in machine 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 particle pelletizing.Spherical material is more sharp
In thermally equivalent in rotary hearth furnace.
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 dry bulb group, obtains metallized pellet.
Combustion gas is melted a point stove 5 and is included feeding mouth and discharging opening.Combustion gas is melted point stove 5 and is separated for the thawing of metallized pellet, obtains
Obtain high-grade molten iron.
As depicted in figs. 1 and 2, rotary hearth furnace 4 includes：Feeding mouth 401, discharging opening 402 and barricade.
It is annular space in the body of heater of rotary hearth furnace 4, furnace bottom is rotatable.Barricade is located in the body of heater of rotary hearth furnace, by body of heater
Annular space be divided into magnetizing roast area 403 and reduction roasting area 404.Barricade includes hollow barricade 405 and solid barricade
406, hollow barricade 405 top is provided with reducing agent entrance 407, hollow barricade 405 inside up/down perforation.
In Fig. 1 and Fig. 2, dotted arrow represents the direction of rotation of rotary furnace bottom.The material rotarily driving in stove of furnace bottom
Motion.According to the furnace bottom direction of rotation of rotary hearth furnace 4, in dry bulb group, reduction roasting area 404 setting is entered by magnetizing roast area 403
Hollow barricade 405, hollow barricade 405 enters the passage of rotary hearth furnace 4 as reducing agent.Rotary hearth furnace feeding mouth 401 is located at Roasting
Burn the solid barricade end in area 403, rotary hearth furnace discharging opening 402 is located at the solid barricade end in reduction roasting area 404.401 mouthfuls of rotary hearth furnace pan feeding
Sector region radian and rotary hearth furnace discharging opening 402 between is 10 °～15 °.Solid barricade 406 is located at 401 mouthfuls of rotary hearth furnace pan feeding
In sector region and rotary hearth furnace discharging opening 402 between.
As shown in Fig. 2 in the embodiment of the present invention, reducing agent entrance 407 is arranged on the top of hollow barricade 405, hollow gear
Wall 405 as reducing agent passage so that system architecture is more compact.Dry bulb group enters reduction roasting area by magnetizing roast area 403
When 404, reducing agent enters rotary hearth furnace by reducing agent entrance 407, and dry bulb is rolled into a ball one layer of reducing agent of uniform fold.
The magnetizing roast area 403 of rotary hearth furnace adopts radiant tube to heat, and reduction roasting area 404 adopts burner to heat.
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 feeding mouth 401, and rotary hearth furnace discharging opening 402 connects combustion gas and melts point stove 5 feeding mouth.
Specifically, it is annular space in the body of heater of rotary hearth furnace 4, the radian of the annular space shared by magnetizing roast area 403 is
120 °～180 °.
Further, barricade bottom and the distance of the furnace bottom upper surface of rotary hearth furnace are 10～20cm.Barricade bottom is to turning bottom
The distance of the furnace bottom upper surface of stove should ensure passing through of material, ensures magnetizing roast area atmosphere and reduction roasting area again
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, dry bulb is rolled into a ball and sends into rotary hearth furnace 4, first carry out magnetizing roast, after carry out reduction roasting, obtain metallized pellet, turn
Di Lu 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 407 enters rotary hearth furnace, when dry bulb is rolled into a ball and entered reduction roasting area 404, dry bulb is rolled into a ball one layer of reducing agent of uniform fold, turns
The furnace bottom of bottom stove rotates a circle the time for 1.5～3h；
3rd, described metallized pellet is sent into combustion gas with addition of quick lime and melt melting down 0.5～1.5h after point stove fusing, obtain iron
Water and slag, metallized pellet is 1 with the mass ratio of quick lime:0.05～0.15.
As preferred scheme, in reducing agent, the mass component of carbon is not less than 80%, and reducing agent granularity is 1～4mm.
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, improve the degree of metalization of dry bulb group.
The system and method that rotary hearth furnace provided in an embodiment of the present invention processes siderite, siderite is prepared pelletizing, is turning
In the stove of bottom, integration completes magnetizing roast and the reduction roasting of dry bulb group, and reduction effect is good；Hollow barricade enters as reducing agent
The passage of rotary hearth furnace, prevents reducing agent from the process that falls, burning and uneven cloth occurring；Reduction roasting area makes full use of magnetization
Roast area dry bulb group sensible heat, energy consumption is little, low cost；Dry bulb group's hot charging enters combustion gas and melts a point stove, melts good separating effect.
Embodiment 1
Certain siderite is milled to the granular mass accounting 87.47% of granularity≤200 mesh, pelletizing (pelletizing particle diameter 8～12mm),
Enter from rotary hearth furnace feeding mouth after drying, magnetizing roast area radian is 130 °, 500 DEG C of temperature control, the temperature control of reduction roasting area
1250 DEG C of system, furnace bottom rotates a circle the time for 2h, when the dry bulb group after magnetizing roast enters reduction roasting area, the reduction coal (matter of C
Amount composition：81.52%, granularity 3mm) it is paved with one layer of dry bulb group from reducing agent entrance, the dry bulb group being paved with reduction coal 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 1:0.05
Enter combustion gas with addition of quick lime and melt melting down 0.6h acquisition molten iron and slag after point stove fusing.
Embodiment 2
Certain siderite is milled to the granular mass accounting 88.85% of granularity≤200 mesh, pelletizing (pelletizing particle diameter 10～
14mm), enter from rotary hearth furnace feeding mouth after being dried, magnetizing roast area radian is 170 °, 650 DEG C of temperature control, reduction roasting area
1200 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：81.31%, granularity 3mm) it is paved with one layer of dry bulb group from reducing agent entrance, the dry bulb group being paved with reduction coal exists
Reduction roasting area is reduced into metallized pellet and discharges from rotary hearth furnace discharging opening.By reduction discharge thermal state metal pellet according to
1:0.1 enters combustion gas with addition of quick lime melts melting down 1.5h acquisition molten iron and slag after point stove fusing.
Embodiment 3
Certain siderite is milled to the granular mass accounting 88.65% of granularity≤200 mesh, pelletizing (pelletizing particle diameter 10～
16mm), enter from rotary hearth furnace feeding mouth after being dried, magnetizing roast area radian is 140 °, 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：84.87%, granularity 3mm) it is paved with one layer of dry bulb group from reducing agent entrance, the dry bulb group being paved with semi-coke is also
Former 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:
0.15 enters combustion gas with addition of quick lime melts melting down 0.9h 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. a kind of rotary hearth furnace processes the system of siderite, melts a point stove including rotary hearth furnace and combustion gas,
Described rotary hearth furnace includes feeding mouth, discharging opening 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 barricade includes hollow barricade and solid barricade, and described hollow barricade top is provided with reducing agent entrance, described sky
The internal up/down perforation of heart barricade,
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 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, described 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.
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 1～4mm.
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 |
|---|---|---|---|
| CN201611041025.1A CN106381357A (en) | 2016-11-22 | 2016-11-22 | System and method for treating siderites by using rotary hearth furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611041025.1A CN106381357A (en) | 2016-11-22 | 2016-11-22 | System and method for treating siderites by using rotary hearth furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106381357A true CN106381357A (en) | 2017-02-08 |
Family
ID=57957627
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611041025.1A Pending CN106381357A (en) | 2016-11-22 | 2016-11-22 | System and method for treating siderites by using rotary hearth furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106381357A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107119185A (en) * | 2017-04-27 | 2017-09-01 | 甘肃酒钢集团宏兴钢铁股份有限公司 | A kind of complicated difficult selects the magnetizing roast method of mixed type iron ore |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1995411A (en) * | 2006-12-26 | 2007-07-11 | 周云富 | Process for producing iron finished ore powder utilizing low grade siderite |
| CN101063181A (en) * | 2007-06-05 | 2007-10-31 | 昆明贵金属研究所 | Rapid reduction of carbonaceous gold-containing iron ore firing residue pellet gold enrichment by using rotary hearth furnace and method for coproduction of iron powder |
| CN101906499A (en) * | 2009-06-04 | 2010-12-08 | 吴道洪 | Iron-making method for treating sulfate slag by direct reduction, grinding and sorting |
| CN206256096U (en) * | 2016-11-22 | 2017-06-16 | 江苏省冶金设计院有限公司 | The system that a kind of rotary hearth furnace processes siderite |
-
2016
- 2016-11-22 CN CN201611041025.1A patent/CN106381357A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1995411A (en) * | 2006-12-26 | 2007-07-11 | 周云富 | Process for producing iron finished ore powder utilizing low grade siderite |
| CN101063181A (en) * | 2007-06-05 | 2007-10-31 | 昆明贵金属研究所 | Rapid reduction of carbonaceous gold-containing iron ore firing residue pellet gold enrichment by using rotary hearth furnace and method for coproduction of iron powder |
| CN101906499A (en) * | 2009-06-04 | 2010-12-08 | 吴道洪 | Iron-making method for treating sulfate slag by direct reduction, grinding and sorting |
| CN206256096U (en) * | 2016-11-22 | 2017-06-16 | 江苏省冶金设计院有限公司 | The system that a kind of rotary hearth furnace processes siderite |
Non-Patent Citations (1)
| Title |
|---|
| 高金涛等: "转底炉分区域供热研究", 《2013年特钢年会论文集》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107119185A (en) * | 2017-04-27 | 2017-09-01 | 甘肃酒钢集团宏兴钢铁股份有限公司 | A kind of complicated difficult selects the magnetizing roast method of mixed type iron ore |
| CN107119185B (en) * | 2017-04-27 | 2019-11-08 | 甘肃酒钢集团宏兴钢铁股份有限公司 | A kind of complicated difficult selects the magnetizing roast method of mixed type iron ore |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107267749A (en) | The method that the high vanadium vanadium titanium magnet ore concentrate mix containing chromium type of high-grade prepares sintering deposit | |
| CN103045854A (en) | Pretreatment method for chromium powder ore used for smelting production of ferrochrome alloy | |
| CN103290161B (en) | Equipment and method for carrying out slag-iron separation and iron reduction on refractory ore, complex ore and chemical industry ferruginous waste | |
| CN105907990A (en) | Method of producing ferrocolumbium | |
| CN105838839B (en) | It prepares the method for granulated iron and prepares the system of granulated iron | |
| CN102268502B (en) | Spongy iron preparation method by smelting refractory iron ore (slag) with reduction rotary kiln | |
| CN111100981A (en) | Method for improving metallurgical performance of manganese-rich slag smelted manganese sinter | |
| CN206256120U (en) | The system that a kind of rotary hearth furnace joint ore grinding magnetic plant processes siderite | |
| CN206256096U (en) | The system that a kind of rotary hearth furnace processes siderite | |
| CN106381357A (en) | System and method for treating siderites by using rotary hearth furnace | |
| CN206256122U (en) | The system that point stove processes siderite is melted in a kind of rotary hearth furnace joint combustion gas | |
| CN106367585B (en) | A kind of system and method for rotary hearth furnace processing troilite | |
| CN106435163A (en) | System and method for treating pyrite by grinding-magnetic separation | |
| CN206143238U (en) | System for gas melting furnace handles troilite | |
| CN206256116U (en) | The system that a kind of mill ore magnetic selection processes troilite | |
| CN105969928B (en) | Prepare system and its application of reduced iron | |
| CN206143276U (en) | System for handle siderite | |
| CN206256121U (en) | The system that a kind of rotary hearth furnace joint ore grinding magnetic plant processes troilite | |
| NO159996B (en) | PROCEDURE FOR CONVERSION OF CALCIUM SULPHATE TO POTASSIUM OR SODIUM SULPHATE. | |
| CN106399669B (en) | A kind of system and method for rotary hearth furnace joint ore grinding magnetic plant processing siderite | |
| CN108004396B (en) | It is a kind of to produce acidic oxidation pellet method using nickel slag | |
| CN106435204A (en) | System and method for treating copper slag through fuel gas melt separation | |
| CN106399668A (en) | System and method for treating siderite in manner of combining rotary hearth furnace with gas melt separation furnace | |
| CN206256115U (en) | A kind of system for processing troilite | |
| CN206143275U (en) | System for rotary hearth furnace is united electric stove and is handled ilmenite concentrate |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| AD01 | Patent right deemed abandoned |
Effective date of abandoning: 20190326 |
|
| AD01 | Patent right deemed abandoned |