CN106967880A - A kind of system and method for preparing sintering chromite - Google Patents
A kind of system and method for preparing sintering chromite Download PDFInfo
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- CN106967880A CN106967880A CN201710252639.2A CN201710252639A CN106967880A CN 106967880 A CN106967880 A CN 106967880A CN 201710252639 A CN201710252639 A CN 201710252639A CN 106967880 A CN106967880 A CN 106967880A
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- entrance
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- pelletizing
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Classifications
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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
- C22B1/14—Agglomerating; Briquetting; Binding; Granulating
- C22B1/24—Binding; Briquetting ; Granulating
- C22B1/2406—Binding; Briquetting ; Granulating pelletizing
-
- 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
-
- 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
- C22B1/14—Agglomerating; Briquetting; Binding; Granulating
- C22B1/16—Sintering; Agglomerating
-
- 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
- C22B1/26—Cooling of roasted, sintered, or agglomerated ores
Abstract
The invention provides a kind of system and method for preparing sintering chromite.The system includes：Mixing device, with the outlet of chromite powder entrance, lime stone entrance, silica entrance, high volatile coal entrance and mixed powder；Briquetting device, is exported with mixed powder entrance and pelletizing, and mixed powder entrance is connected with the mixed powder outlet of mixing device；Powder device is wrapped up in, with pelletizing entrance, low volatile coal entrance and the outlet of sphere of powder group is wrapped up in, the pelletizing outlet of pelletizing entrance and briquetting device is connected；Sintering equipment, with sphere of powder group's entrance and agglomerates of sintered pellets outlet is wrapped up in, wraps up in wrap up in sphere of powder group outlet of the sphere of powder group's entrance with wrapping up in powder device and is connected；Breaker, is exported with agglomerates of sintered pellets entrance and muck, and agglomerates of sintered pellets entrance is connected with the agglomerates of sintered pellets outlet of sintering equipment；Screening plant, is exported with muck entrance and finished product sintering deposit, and muck entrance is connected with the muck outlet of breaker.Gained sinter quality of the invention is high, and with sintering temperature is low, low power consumption and other advantages.
Description
Technical field
The invention belongs to ferroalloy smelting technical field, in particular it relates to a kind of system for preparing sintering chromite and side
Method.
Background technology
Chromite is the important source material that ferroalloy produces high carbon ferro-chrome, and wherein most is powder.If straight during ferrochrome smelting
Connecing can make electric furnace gas permeability be deteriorated with ferrochrome fine ore, deteriorate the working of a furnace, increase energy consumption, be unfavorable for the safe operation of electric furnace, thus must
Chromite powder must be pre-processed.Chromite powder sintering method main at present has direct sintering and pellet roasting method.
The raw material of sintering process does not need fine grinding processing, and gained chromite sintered products are loose porous, and surface area is big, reactivity
Can be good, technics comparing is ripe；But because chromite fusing point is high, hardly possible forms the liquid phase of low melting point, and chromite powder fine size deteriorates material
The gas permeability of layer so that sintering process yields poorly, the rate of return mine is high, the shortcoming of high energy consumption.
Existing pellet roasting method is by chromite powder and coal dust (or coke powder) drying, mixed grinding, batch mixing and then additional
Bentonite and water pelletizing, are finally dried and are calcined and reduced (oxidation) pelletizing, but require chromite powder being ground to grain
Mass fraction 80% of the degree less than 0.074mm, technique needs large-scale milling apparatus, and energy consumption is big, and technological process is complicated, investment compared with
Greatly.
The content of the invention
In view of the shortcomings of the prior art, the present invention is intended to provide a kind of technological process is simple, energy consumption is low, sintering effect good
The sintering system and sintering method of chromite powder.
The system for the preparation sintering chromite that the present invention is provided, including：
Mixing device, with chromite powder entrance, lime stone entrance, silica entrance, high volatile coal entrance and mixed powder
Outlet；
Briquetting device, is exported, the mixing of the mixed powder entrance and the mixing device with mixed powder entrance and pelletizing
Powder outlet is connected；
Wrap up in powder device, with pelletizing entrance, low volatile coal entrance and wrap up in the sphere of powder group outlet, the pelletizing entrance with it is described
The pelletizing outlet of briquetting device is connected；
Sintering equipment, with sphere of powder group's entrance and agglomerates of sintered pellets outlet is wrapped up in, sphere of powder group's entrance of wrapping up in wraps up in powder dress with described
The sphere of powder group outlet of wrapping up in put is connected；
Breaker, is exported with agglomerates of sintered pellets entrance and muck, the agglomerates of sintered pellets entrance and the sintering equipment
Agglomerates of sintered pellets outlet is connected；
Screening plant, is exported, the muck entrance is broken with the breaker with muck entrance and finished product sintering deposit
Ore deposit outlet is connected.
Preferably, the mixing device be horizontal drum batch mixer, the briquetting device be to roll-in ball machine, it is described to wrap up in powder
Device is disc balling machine, and the sintering equipment is air-draft-type sintering machine.
The method that the utilization said system that the present invention is provided prepares sintering chromite, comprises the following steps：
Chromite powder, lime stone, silica and high volatile coal are sent into the mixing device and are well mixed, is mixed
Powder；
The mixed powder is sent into briquetting is carried out in the briquetting device, obtain pelletizing；
It will be wrapped up in described in pelletizing feeding in powder device, uniformly wrap one layer of low volatile coal on the pelletizing surface, obtain
Sphere of powder group must be wrapped up in；
Described wrap up in is sintered in the sphere of powder group feeding sintering equipment, agglomerates of sintered pellets is obtained；
Crush, sieve after the agglomerates of sintered pellets is cooled down, obtain finished product sintering deposit.
Preferably, the chromite powder, the lime stone, the silica, the mass ratio of the high volatile coal are 1：
(0.05~0.15)：(0.05~0.15)：(0.05~0.10).
Preferably, Cr in the chromite powder2O3Content >=40wt%, MgO content≤8wt%, Cr2O3With FeO's
Mass ratio >=2.2.
Preferably, CaCO in the lime stone3Content >=90wt%, SiO in the silica2Content >=90wt%.
Preferably, the firing temperature of sintering is 1000~1300 DEG C.
Preferably, in the high volatile coal C content >=50wt%, volatile matter content >=40wt%, average grain diameter≤
1mm。
Preferably, in the low volatile coal C content >=80wt%, volatile matter content≤10wt%, average grain diameter≤
0.5mm。
The present invention will wrap up in one layer by the way that chromite powder, lime stone, silica and high volatile coal are mixed into pressure ball outside pelletizing
Low volatile coal is sintered, and is cooled down, crushed after sintering, sieving acquisition finished product sintering deposit, gained sintering deposit is Well-recovered, intensity
Height, and, low power consumption and other advantages low with sintering temperature.
In the present invention, lime stone and silica formation low melting point provide consolidation liquid phase, and intensity is high, reduces sintering temperature；
Lime stone discharges CO in sintering process2, high volatile coal release volatile materials, make sintering deposit loose porous, volatile materials
Acceleration of sintering ore deposit prereduction, improves its Well-recovered, low volatile coal offer sintering fuel, it is ensured that sintering temperature and reproducibility gas
Atmosphere, acceleration of sintering ore deposit prereduction reduces subsequent smelting energy consumption.
Brief description of the drawings
Fig. 1 is the structural representation for preparing the system for sintering chromite in the embodiment of the present invention.
Fig. 2 is a kind of process chart for preparing sintering chromite in the embodiment of the present invention.
Embodiment
Below in conjunction with drawings and examples, the embodiment to the present invention is described in more details, so as to energy
Enough more fully understand the solution of the present invention and the advantage of its various aspects.However, specific embodiments described below and reality
Apply the purpose that example is only explanation, rather than limitation of the present invention.Wt% refers to weight/mass percentage composition in the present invention.
As shown in figure 1, the system for the preparation sintering chromite that the present invention is provided includes mixing device 1, briquetting device 2, wrapped up in
Powder device 3, sintering equipment 4, breaker 5 and screening plant 6.
Mixing device 1 is used to mix chromite powder, lime stone, silica and high volatile coal.Mixing device 1 has chromite
Powder entrance, lime stone entrance, silica entrance, high volatile coal entrance and mixed powder outlet.In the preferred embodiment of the invention,
Mixing device 1 is horizontal drum batch mixer.
The mixed powder that briquetting device 2 is used to prepare mixing device 1 is pressed into pelletizing.Briquetting device 2 has mixed powder
Entrance and pelletizing outlet, mixed powder entrance are connected with the mixed powder outlet of mixing device 1.In the preferred embodiment of the invention,
Briquetting device 2 is to roll-in ball machine.
Wrapping up in powder device 3 is used to uniformly wrap one layer of low volatile coal on pelletizing surface.Wrap up in powder device 3 with pelletizing entrance,
Low volatile coal entrance is connected with the outlet of sphere of powder group, pelletizing entrance is wrapped up in the pelletizing outlet of briquetting device 2.Currently preferred
In embodiment, powder device 3 is wrapped up in for disc balling machine.
Sintering equipment 4 is used to prepare agglomerates of sintered pellets.Sintering equipment 4, which has, wraps up in sphere of powder group's entrance and agglomerates of sintered pellets outlet, wraps up in
Wrap up in sphere of powder group outlet of sphere of powder group's entrance with wrapping up in powder device 3 is connected.In the preferred embodiment of the invention, sintering equipment 4 is to take out
Wind formula sintering machine.
Pelletizing after sintering is crushed after supercooling in breaker 5, then filters out size in screening plant 6
Suitable finished product sintering deposit.
There is breaker 5 agglomerates of sintered pellets entrance and muck to export, the agglomerates of sintered pellets of agglomerates of sintered pellets entrance and sintering equipment 4
Outlet is connected.There is screening plant 6 muck entrance and finished product sintering deposit to export, and the muck of muck entrance and breaker 5 is exported
It is connected.
The present invention will wrap up in one layer by the way that chromite powder, lime stone, silica and high volatile coal are mixed into pressure ball outside pelletizing
Low volatile coal is sintered, and is cooled down, crushed after sintering, sieving acquisition finished product sintering deposit, gained sintering deposit is Well-recovered, intensity
Height, and, low power consumption and other advantages low with sintering temperature.
As shown in Fig. 2 the method that the utilization said system that the present invention is provided prepares sintering chromite, comprises the following steps：
Chromite powder, lime stone, silica and high volatile coal are sent into mixing device 1 and are well mixed, mixed powder is obtained；
Mixed powder is sent into briquetting is carried out in briquetting device 2, obtain pelletizing；
Pelletizing feeding is wrapped up in powder device 3, one layer of low volatile coal is uniformly wrapped on pelletizing surface, sphere of powder group is wrapped up in acquisition；
It will wrap up in and be sintered in sphere of powder group feeding sintering equipment 4, and obtain agglomerates of sintered pellets；
Agglomerates of sintered pellets is sequentially sent to crush after cooling down in breaker 5 and screening plant 6, sieved, finished product sintering is obtained
Ore deposit.
Lime stone and silica formation low melting point provide consolidation liquid phase, and intensity is high, reduces sintering temperature；In sintering process
Lime stone discharges CO2, high volatile coal release volatile materials, make sintering deposit loose porous, volatile materials acceleration of sintering ore deposit
Prereduction, improves its Well-recovered, low volatile coal offer sintering fuel, it is ensured that sintering temperature and reducing atmosphere, promotes to burn
Ore deposit prereduction is tied, subsequent smelting energy consumption is reduced.
In the preferred embodiment of the invention, chromite powder, lime stone, silica, the mass ratio of high volatile coal are 1：
(0.05~0.15)：(0.05~0.15)：(0.05~0.10).
Cr in chromite powder2O3Content it is higher, MgO content is lower, Cr2O3With FeO mass ratio (Cr2O3/ FeO) get over
Greatly, obtained agglomerates of sintered pellets quality is better.In the preferred embodiment of the invention, Cr in chromite powder2O3>=40wt%, MgO's
Content≤8wt%, Cr2O3/FeO≥2.2。
CaCO in lime stone3Weight/mass percentage composition, SiO in silica2Weight/mass percentage composition it is higher, obtained sintered balls
Group's quality is better.The CaCO in lime stone in the preferred embodiment of the invention3>=90%, SiO in silica2>=90wt%.
The firing temperature of sintering is too low, and sintering effect is bad；Temperature is too high, wastes the energy.Implement currently preferred
In example, the firing temperature of sintering is 1000 DEG C~1300 DEG C.
Chromite powder, lime stone, silica, high volatile coal, low volatile coal are thinner, and the sintering effect of obtained pelletizing is got over
It is good, but process costs can be improved, reduce production efficiency.In the preferred embodiment of the invention, chromite powder, lime stone, silica,
Particle diameter≤1mm of high volatile coal, particle diameter≤0.5mm of low volatile coal.
The height of the bed of material is too low in sintering equipment, wasting space；Height is too big, influences sintering effect.Of the invention preferred
Embodiment in, in sintering equipment the height of the bed of material be 400mm~800mm.
The particle size range that the diameter of pelletizing is certain just can guarantee that laying thickness of feed layer pore size is suitable, and sintering effect is good.
In the preferred embodiment of the invention, a diameter of 20mm~50mm of pelletizing.
The content of fugitive constituent is more in high volatile coal, is easier to make pelletizing loose porous in sintering.It is excellent in the present invention
In the embodiment of choosing, C content >=50wt%, volatile matter content >=40wt% in high volatile coal.
In the present invention, low volatile coal is used as bunker coal and prereduction carbon source, therefore C content is higher, volatile matter contains
Amount is more low better.In the preferred embodiment of the invention, C content >=80wt% in low volatile coal, volatile matter content≤
10wt%.
Below with reference to specific embodiment, the present invention will be described.Institute's taking technique condition value is in following embodiments
Exemplary, its desirable number range is as shown in foregoing summary.Detection method used in following embodiments is one's own profession
The conventional detection method of industry.
Embodiment 1
Sintering chromite is prepared using the technological process shown in the system and Fig. 2 shown in Fig. 1, it is specific as follows：
Prepare chromite, lime stone, silica, high volatile coal and low volatile coal.Cr in chromite used2O3Contain
Measure as 42.5wt%, Cr2O3/ FeO=2.4, MgO content are 6.5wt%；CaCO in lime stone3Content be 92.3wt%,
SiO in silica2Content be 97.5wt%；C content is 51.5wt% in high volatile coal, and volatile matter content is
41.3wt%；C content is 82.4wt% in low volatile coal, and volatile matter content is 7.2wt%.
Chromite, lime stone, silica, high volatile coal are crushed to below 1mm respectively, low volatile coal is crushed to grain
Footpath is less than 0.4mm.
Mass ratio according to chromite powder, lime stone, silica, high volatile coal is 1:0.05:0.05:0.05 ratio is mixed
Expect device 1 mix after in briquetting device 2 briquetting, pellet size is 20mm.
Mass ratio according to pelletizing, low volatile coal is 1:0.01 ratio, one layer is wrapped up in powder device 3 is wrapped up in by pelletizing surface
Sphere of powder group is wrapped up in low volatile coal, acquisition.
It will wrap up in and be sintered in sphere of powder group feeding sintering equipment 4, and obtain agglomerates of sintered pellets.The height of the bed of material in sintering equipment 4
For 400mm.The firing temperature of sintering is 1000 DEG C.
Agglomerates of sintered pellets is sequentially sent to crush after cooling down in breaker 5 and screening plant 6, sieved, choosing granularity is
20mm finished product sintering deposit.
The drum strength of sintering deposit is 87.25%, and reduction swellability rate is 6.33%, reduction and pulverization ratio RDI+3.15It is more than
91%.
Embodiment 2
Sintering chromite is prepared using the technological process shown in the system and Fig. 2 shown in Fig. 1, it is specific as follows：
Prepare chromite, lime stone, silica, high volatile coal and low volatile coal.Cr in chromite used2O3Contain
Measure as 45.8wt%, Cr2O3/ FeO=2.3, MgO content are 5.8wt%；CaCO in lime stone3Content be 91.5wt%,
SiO in silica2Content be 91.3wt%；C content is 52.3wt% in high volatile coal, and volatile matter content is
43.5wt%；C content is 82.5wt% in low volatile coal, and volatile matter content is 7.6wt%.
Chromite, lime stone, silica, high volatile coal are crushed to below 1mm respectively, low volatile coal is crushed to grain
Footpath is less than 0.4mm.
Mass ratio according to chromite powder, lime stone, silica, high volatile coal is 1:0.15:0.1:0.07 ratio is mixed
Expect device 1 mix after in briquetting device 2 briquetting, pellet size is 30mm.
Mass ratio according to pelletizing, low volatile coal is 1:0.02 ratio, one layer is wrapped up in powder device 3 is wrapped up in by pelletizing surface
Sphere of powder group is wrapped up in low volatile coal, acquisition.
It will wrap up in and be sintered in sphere of powder group feeding sintering equipment 4, and obtain agglomerates of sintered pellets.The height of the bed of material in sintering equipment 4
For 800mm.The firing temperature of sintering is 1300 DEG C.
Agglomerates of sintered pellets is sequentially sent to crush after cooling down in breaker 5 and screening plant 6, sieved, choosing granularity is
30mm finished product sintering deposit.
The drum strength of sintering deposit is 87.13%, and reduction swellability rate is 6.83%, reduction and pulverization ratio RDI+3.15It is more than
92%.
Embodiment 3
Sintering chromite is prepared using the technological process shown in the system and Fig. 2 shown in Fig. 1, it is specific as follows：
Prepare chromite, lime stone, silica, high volatile coal and low volatile coal.Cr in chromite used2O3Contain
Measure as 46.3wt%, Cr2O3/ FeO=2.2, MgO content are 6.1wt%；CaCO in lime stone3Content be 92.8wt%,
SiO in silica2Content be 96.5wt%；C content is 54.3wt% in high volatile coal, and volatile matter content is
42.6wt%；C content is 84.5wt% in low volatile coal, and volatile matter content is 8.5wt%.
Chromite, lime stone, silica, high volatile coal are crushed to below 1mm respectively, low volatile coal is crushed to grain
Footpath is less than 0.4mm.
Mass ratio according to chromite powder, lime stone, silica, high volatile coal is 1:0.1:0.15:0.1 ratio is in batch mixing
Device 1 mix after in briquetting device 2 briquetting, pellet size is 20mm.
Mass ratio according to pelletizing, low volatile coal is 1:0.02 ratio, one layer is wrapped up in powder device 3 is wrapped up in by pelletizing surface
Sphere of powder group is wrapped up in low volatile coal, acquisition.
It will wrap up in and be sintered in sphere of powder group feeding sintering equipment 4, and obtain agglomerates of sintered pellets.The height of the bed of material in sintering equipment 4
For 600mm.The firing temperature of sintering is 1200 DEG C.
Agglomerates of sintered pellets is sequentially sent to crush after cooling down in breaker 5 and screening plant 6, sieved, choosing granularity is
20mm finished product sintering deposit.
The drum strength of sintering deposit is 88.31%, and reduction swellability rate is 6.85%, reduction and pulverization ratio RDI+3.15It is more than
93%.
It was found from above-described embodiment, technique of the invention is simple, and energy consumption is small, and cost is low, and obtained sinter quality is good.
To sum up, the present invention by chromite powder, lime stone, silica and high volatile coal by mixing pressure ball, by outside pelletizing
Wrap up in and cooled down, crushed after one layer of low volatile coal sintering, sintering, sieving acquisition finished product sintering deposit, gained sintering deposit reproducibility
Good, intensity is high, and low with sintering temperature, low power consumption and other advantages.
In the present invention, lime stone and silica formation low melting point provide consolidation liquid phase, and intensity is high, reduces sintering temperature；
Lime stone discharges CO in sintering process2, high volatile coal release volatile materials, make sintering deposit loose porous, volatile materials
Acceleration of sintering ore deposit prereduction, improves its Well-recovered, low volatile coal offer sintering fuel, it is ensured that sintering temperature and reproducibility gas
Atmosphere, acceleration of sintering ore deposit prereduction reduces subsequent smelting energy consumption.
Obviously, above-described embodiment is only intended to clearly illustrate example of the present invention, and not to embodiment
Limit.For those of ordinary skill in the field, other multi-forms can also be made on the basis of the above description
Change or variation.There is no necessity and possibility to exhaust all the enbodiments.And thus amplify out it is apparent
Change or change still in protection scope of the present invention among.
Claims (9)
1. a kind of system for preparing sintering chromite, it is characterised in that including：
Mixing device, with the outlet of chromite powder entrance, lime stone entrance, silica entrance, high volatile coal entrance and mixed powder；
Briquetting device, is exported, the mixed powder of the mixed powder entrance and the mixing device goes out with mixed powder entrance and pelletizing
Mouth is connected；
Powder device is wrapped up in, with pelletizing entrance, low volatile coal entrance and the outlet of sphere of powder group, the pelletizing entrance and the briquetting is wrapped up in
The pelletizing outlet of device is connected；
Sintering equipment, it is described to wrap up in sphere of powder group's entrance and the powder device wrapped up in sphere of powder group's entrance and agglomerates of sintered pellets outlet is wrapped up in
The outlet of sphere of powder group is wrapped up in be connected；
Breaker, is exported, the sintering of the agglomerates of sintered pellets entrance and the sintering equipment with agglomerates of sintered pellets entrance and muck
Pelletizing outlet is connected；
Screening plant, is exported, the muck of the muck entrance and the breaker goes out with muck entrance and finished product sintering deposit
Mouth is connected.
2. system according to claim 1, it is characterised in that the mixing device is horizontal drum batch mixer, the pressure
Packaged to be set to roll-in ball machine, the powder device of wrapping up in is disc balling machine, and the sintering equipment is air-draft-type sintering machine.
3. the method that the system described in a kind of utilization claim 1 or 2 prepares sintering chromite, it is characterised in that including as follows
Step：
Chromite powder, lime stone, silica and high volatile coal are sent into the mixing device and are well mixed, mixed powder is obtained；
The mixed powder is sent into briquetting is carried out in the briquetting device, obtain pelletizing；
It will be wrapped up in described in pelletizing feeding in powder device, uniformly wrap one layer of low volatile coal on the pelletizing surface, wrapped up in
Sphere of powder group；
Described wrap up in is sintered in the sphere of powder group feeding sintering equipment, agglomerates of sintered pellets is obtained；
Crush, sieve after the agglomerates of sintered pellets is cooled down, obtain finished product sintering deposit.
4. method according to claim 3, it is characterised in that the chromite powder, the lime stone, the silica, institute
The mass ratio for stating high volatile coal is 1：(0.05~0.15)：(0.05~0.15)：(0.05~0.10).
5. method according to claim 3, it is characterised in that Cr in the chromite powder2O3Content >=40wt%, MgO
Content≤8wt%, Cr2O3With FeO mass ratio >=2.2.
6. method according to claim 3, it is characterised in that CaCO in the lime stone3Content >=90wt%, it is described
SiO in silica2Content >=90wt%.
7. method according to claim 3, it is characterised in that the firing temperature of sintering is 1000~1300 DEG C.
8. method according to claim 3, it is characterised in that C content >=50wt% in the high volatile coal, volatilization
Divide content >=40wt%, average grain diameter≤1mm.
9. method according to claim 3, it is characterised in that C content >=80wt% in the low volatile coal, volatilization
Divide content≤10wt%, average grain diameter≤0.5mm.
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| CN201710252639.2A CN106967880A (en) | 2017-04-18 | 2017-04-18 | A kind of system and method for preparing sintering chromite |
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| CN201710252639.2A CN106967880A (en) | 2017-04-18 | 2017-04-18 | A kind of system and method for preparing sintering chromite |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108994041A (en) * | 2018-06-25 | 2018-12-14 | 佛山市凯孚高科材料有限公司 | Ferrochrome particle and its production method |
| CN113481364A (en) * | 2021-06-23 | 2021-10-08 | 东北大学 | Preparation method of vanadium titano-magnetite carbon-containing pellets suitable for rotary kiln iron-making process |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101705356A (en) * | 2009-12-07 | 2010-05-12 | 中南大学 | Sintering technology of ferrochrome mineral powder |
| CN103014326A (en) * | 2012-12-28 | 2013-04-03 | 长沙矿冶研究院有限责任公司 | Sintering process of manganese ore powder |
| CN104745798A (en) * | 2015-04-13 | 2015-07-01 | 中钢集团吉林机电设备有限公司 | Sintering process for ferrochromium fine powder ore pellets |
| CN206828596U (en) * | 2017-04-18 | 2018-01-02 | 江苏省冶金设计院有限公司 | A kind of system for preparing sintering chromite |
-
2017
- 2017-04-18 CN CN201710252639.2A patent/CN106967880A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101705356A (en) * | 2009-12-07 | 2010-05-12 | 中南大学 | Sintering technology of ferrochrome mineral powder |
| CN103014326A (en) * | 2012-12-28 | 2013-04-03 | 长沙矿冶研究院有限责任公司 | Sintering process of manganese ore powder |
| CN104745798A (en) * | 2015-04-13 | 2015-07-01 | 中钢集团吉林机电设备有限公司 | Sintering process for ferrochromium fine powder ore pellets |
| CN206828596U (en) * | 2017-04-18 | 2018-01-02 | 江苏省冶金设计院有限公司 | A kind of system for preparing sintering chromite |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108994041A (en) * | 2018-06-25 | 2018-12-14 | 佛山市凯孚高科材料有限公司 | Ferrochrome particle and its production method |
| CN113481364A (en) * | 2021-06-23 | 2021-10-08 | 东北大学 | Preparation method of vanadium titano-magnetite carbon-containing pellets suitable for rotary kiln iron-making process |
| CN113481364B (en) * | 2021-06-23 | 2023-01-31 | 东北大学 | Preparation method of vanadium titano-magnetite carbon-containing pellets suitable for rotary kiln iron-making process |
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