CN107282260A - A kind of pellet screening reuse method - Google Patents
A kind of pellet screening reuse method Download PDFInfo
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- CN107282260A CN107282260A CN201710594914.9A CN201710594914A CN107282260A CN 107282260 A CN107282260 A CN 107282260A CN 201710594914 A CN201710594914 A CN 201710594914A CN 107282260 A CN107282260 A CN 107282260A
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- mine
- pressure roller
- roller mill
- high pressure
- iron concentrate
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Classifications
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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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C23/00—Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C23/00—Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
- B02C23/08—Separating or sorting of material, associated with crushing or disintegrating
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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
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Abstract
The present invention relates to a kind of pellet screening reuse method, comprise the following steps：Collection is returned mine, and is transported after the collection that will return mine to returning mine in storehouse, is screened out bulk and iron alloy member；Prepare qualified return mine；Iron concentrate dispensing；Iron concentrate is dried；High pressure roller mill Iron concentrate；Iron concentrate after fine grinding enters strength mixture operation by conveying equipment；Prepare additive formulations；Profit mill；Pelletizing.The present invention mainly makes full use of the existing device of production line, high pressure roller mill system is designed to time-division processing different material, advantage of the high-pressure roller mill in terms of stiff block is broken with Iron concentrate wet type fine grinding is played respectively, solve the problem that pellet screening is difficult to recycle, the need for satisfaction is reused, material loss is greatly reduced, transport and processing cost are saved, good material treatment effect can be obtained, large number quipments and technique building need not be increased newly again, investment cost is low, is easy to large-scale popularization.
Description
Technical field
The present invention relates to pellet production field, and in particular to the technical method that a kind of pellet screening is recycled.
Background technology
In ferrous metals industry, the iron ore agglomeration method of main flow mainly has sintering process and pelletizing method, wherein pelletizing method
Suitable granularity is the iron ore concentrate shaping for being.Certain journey is inevitably produced in grate-kiln pelletizing ore production technology
Degree is returned mine, and predominantly green-ball is dried in drying grate, the bulk cargo that produces and returns mine and (be referred to as returning during preheating and finished product screening
Ore deposit), hardness of returning mine is higher, particle is larger, it is difficult to for pelletizing method reproduction, and transport of typically being returned mine to this part is used for sintering deposit
Production.Such processing mode adds material loss, and processing cost is higher.
Learnt by retrieval, in order to reduce material loss, cost-effective, some enterprises, which will directly return mine, directly participates in iron essence
Powder dispensing, it is directly used in pellet production after profit mill, but damp mill differs handling such particle size, hardness is substantially poor
During different material, poor processing effect, returning mine for many bulky grains is not broken, or it is broken after granularity it is still excessive, balling-up
Can be poor, directly affect the performance of pelletizing process production capacity.For problem above, domestic certain pelletizing production enterprise uses Generalized Mill system
System is handled returning mine, and is subsequently used for pelletizing production, is achieved good effect.
With the continuous popularization and production domesticization of high pressure roller mill technology, large-scale domestic mine is generally using high-pressure roller mill to iron
Ore carries out break process, have accumulated certain use experience.Meanwhile, high pressure roller mill can increase iron to Iron concentrate progress processing
Fine powder specific surface area, improves Iron concentrate balling property, and high pressure roller mill has turned into domestic newly-built, reconstruction pellet production line indispensability
Equipment.How knowhow of the high pressure roller mill in bargh is used for processing of returning mine, to improve the balling property state returned mine
Research in this respect and industrial test are not started to also generally inside.
Either using damp mill still handled with broad sense grinding system returning mine different degrees of presence some
Problem.One, which is damp mill, differs handling such particle size, during the material of hardness notable difference (Iron concentrate, return mine), processing
Effect is poor, and returning mine for many bulky grains is not broken, or broken rear granularity is still excessive, and balling property is poor, directly affects and makes
The performance of ball process production capacity.Two be that broad sense grinding system is complex, and technique building and equipment are more, and floor space is larger, investment
Costly, equipment purposes is single, and this several respects shortcoming limits promoting the use for such method.
Therefore, it is necessary to invent a kind of more preferable pellet screening reuse method, improve pellet screening treatment effect, reduce
Material loss, saves transport and processing cost, and construction cost is low, is easy to large-scale popularization.
The content of the invention
To overcome the deficiency, there is provided a kind of pellet screening reuse method on the premise of high intensity is ensured.
The technical solution adopted for the present invention to solve the technical problems is：A kind of pellet screening reuse method, including with
Lower step：
Step one：Collection is returned mine, and is transported after the collection that will return mine to returning mine in storehouse, wherein returning mine as the bulk cargo of drying grate bottom
The unqualified pellet two parts of granularity screened out with finished product screen, the first feed bin for returning mine feed bin to collect bulk cargo and return mine；
Step 2：Bulk and iron alloy member are screened out, by returning mine by conveying equipment and meter under storehouse of returning mine in storehouse of returning mine
The metering of amount equipment conveys and carries out scalper and removes to go out except operation with iron content debris；
Step 3：Prepare it is qualified return mine, will return mine by what bulk, iron content debris were removed and be transported to high pressure roller mill feed bin,
Break process of returning mine is carried out using high pressure roller mill, returning mine after high pressure roller mill is broken is delivered on screening plant by conveying device
Sieved, two kinds of materials for being divided into+3mm (i.e. particle diameter ＞ 3mm) and -3mm (i.e. particle diameter ＜ 3mm) of returning mine after crushing, its
In+3mm it is broken after return mine and returned mine storehouse by conveying device, by the order progress closed-type high-pressure roller of step one to step 3
Mill circulation crushing operation, obtained broken returning mine for rear particle diameter -3mm is returned mine to be qualified, and qualified return mine is transported by conveying equipment
Enter afterwards it is broken after second return mine feed bin.
Step 4：Iron concentrate dispensing, second after broken returns mine feed bin capacity close to during production requirement, is counted under storehouse of returning mine
Measure conveying equipment to shut down, stop conveying and return mine, while starting the conveying equipment and measuring equipment of iron ore concentrate feed bin bottom to difference
The iron ore concentrate part of species carries out batch operation by proportioning；
Step 5：Iron concentrate is dried, and Iron concentrate batch is transported to dryer and carries out drying operation, if Iron concentrate is matched somebody with somebody
Closing the water satisfied pellet forming process demand of material can also use bypass belt feeder directly to convey and carry out scalper except miscellaneous with iron content
Thing goes out except operation；
Step 6：High pressure roller mill Iron concentrate, sends the Iron concentrate batch behind bulk, iron debris place to go into high-pressure roller mill
Wet method fine grinding operation is carried out, to ensure the one after another of high pressure roller mill, high pressure roller mill top stock column should be always ensured that in more than 3m；
Step 7：When carrying out step 6, observation high pressure roller mill bottom discharging opening is should be noted, when the discharging of high pressure roller mill bottom
When Iron concentrate batch after fine grinding occurs in mouth, show that high pressure roller mill top stock column is only left Iron concentrate batch, now pass through and adjust
The conveying device of whole high pressure roller mill bottom changes the flow direction of material, and the high pressure roller mill crushing operation returned mine terminates, high-pressure roller mill
Terminate closed cycle crushing operation, proceed by open type Iron concentrate fine grinding operation, the Iron concentrate after fine grinding is entered by conveying equipment
Enter strength mixture operation；
Step 8：Additive formulations are prepared, when the Iron concentrate after fine grinding enters intensive mixer by conveying equipment, are opened
Dynamic dedusting ash silo, bentonite storehouse and second are returned mine the conveying equipment and measuring equipment of feed bin, by dedusting ash, bentonite and qualified are returned
Ore deposit is added agent batch operation according to Iron concentrate setting proportioning, and is together mixed with Iron concentrate into intensive mixer
Operation；
Step 9：Profit mill, it is referred to as mixed by Iron concentrate, dedusting ash, bentonite and the qualified compound of returning mine of strength mixing
Material is closed, ball mill is delivered to and carries out profit mill operation；
Step 10：Compound enters feed bin (abbreviation pelletizing storehouse) the progress pelletizing operation on pelletizer top after pelletizing, profit mill,
The green-ball obtained from pelletizer carries out pellet production according to grate kiln method, and such a method is already belonging to general technology,
Repeat no more.
Specifically, when needing to use high pressure roller mill to carry out returning mine broken, it should first confirm that in the feed bin of pelletizing storehouse
Compound disclosure satisfy that after the pelletizing job requirements of certain time, be then shut off the measuring equipment and conveying equipment of Iron concentrate,
Order opens high pressure roller mill crushing operation of returning mine according to step one to step 3, now should be noted the discharging of observation high pressure roller mill bottom
Mouthful, returning mine constantly after high pressure roller mill bottom discharging opening is crushed shows that high pressure roller mill top stock column is only left to return mine, this
When change the flow direction of material by adjusting the conveying device of high pressure roller mill bottom, the high pressure roller mill crushing operation of Iron concentrate terminates,
High-pressure roller mill terminates open type Iron concentrate wet method fine grinding operation, closed cycle crushing operation of returning mine is proceeded by, while should stop
The additive formulations operation returned mine after dedusting ash, bentonite and high pressure roller mill are broken；
Specifically, when needing to carry out Iron concentrate high pressure roller mill wet method fine grinding operation, sequentially according to step 4 to step 10
Operated.
The invention has the advantages that：The present invention mainly makes full use of the existing device of production line, by high pressure roller
Grinding system is designed to time-division processing different material, and the mode that closed-loop process and open loop processing are combined plays high pressure roller mill respectively
Advantage of the machine in terms of stiff block is broken with Iron concentrate wet type fine grinding, the smashing principle of reasonable consideration pelletizing grinding machine, composition is high
The joint crushing system of pressure roller mill-profit mill, solves the problem that pellet screening is difficult to recycle, the need for satisfaction is reused,
Material loss is greatly reduced, transport and processing cost has been saved, good material treatment effect can be obtained, again need not be new
Increase equipment and technique building, investment cost are low, are easy to large-scale popularization.
Brief description of the drawings
Fig. 1 is flow chart of the invention.
Embodiment
The present invention is further detailed explanation now.
A kind of pellet screening reuse method as shown in Figure 1, comprises the following steps：
Step one：Collection is returned mine, and is transported after the collection that will return mine to returning mine in storehouse, wherein returning mine as the bulk cargo of drying grate bottom
The unqualified pellet two parts of granularity screened out with finished product screen, the first feed bin for returning mine feed bin to collect bulk cargo and return mine；
Step 2：Bulk and iron alloy member are screened out, by returning mine by conveying equipment and meter under storehouse of returning mine in storehouse of returning mine
The metering of amount equipment conveys and carries out scalper and removes to go out except operation with iron content debris；
Step 3：Prepare it is qualified return mine, will return mine by what bulk, iron content debris were removed and be transported to high pressure roller mill feed bin,
Break process of returning mine is carried out using high pressure roller mill, returning mine after high pressure roller mill is broken is delivered on screening plant by conveying device
Sieved, two kinds of materials for being divided into+3mm (i.e. particle diameter ＞ 3mm) and -3mm (i.e. particle diameter ＜ 3mm) of returning mine after crushing, its
In+3mm it is broken after return mine and returned mine storehouse by conveying device, by the order progress closed-type high-pressure roller of step one to step 3
Mill circulation crushing operation, obtained broken returning mine for rear particle diameter -3mm is returned mine to be qualified, and qualified return mine is transported by conveying equipment
Enter afterwards it is broken after second return mine feed bin.
Step 4：Iron concentrate dispensing, second after broken returns mine feed bin capacity close to during production requirement, is counted under storehouse of returning mine
Measure conveying equipment to shut down, stop conveying and return mine, while starting the conveying equipment and measuring equipment of iron ore concentrate feed bin bottom to difference
The iron ore concentrate part of species carries out batch operation by proportioning；
Step 5：Iron concentrate is dried, and Iron concentrate batch is transported to dryer and carries out drying operation, if Iron concentrate is matched somebody with somebody
Closing the water satisfied pellet forming process demand of material can also use bypass belt feeder directly to convey and carry out scalper except miscellaneous with iron content
Thing goes out except operation；
Step 6：High pressure roller mill Iron concentrate, sends the Iron concentrate batch behind bulk, iron debris place to go into high-pressure roller mill
Wet method fine grinding operation is carried out, to ensure the one after another of high pressure roller mill, high pressure roller mill top stock column should be always ensured that in more than 3m；
Step 7：When carrying out step 6, observation high pressure roller mill bottom discharging opening is should be noted, when the discharging of high pressure roller mill bottom
When Iron concentrate batch after fine grinding occurs in mouth, show that high pressure roller mill top stock column is only left Iron concentrate batch, now pass through and adjust
The conveying device of whole high pressure roller mill bottom changes the flow direction of material, and the high pressure roller mill crushing operation returned mine terminates, high-pressure roller mill
Terminate closed cycle crushing operation, proceed by open type Iron concentrate fine grinding operation, the Iron concentrate after fine grinding is entered by conveying equipment
Enter strength mixture operation；
Step 8：Additive formulations are prepared, when the Iron concentrate after fine grinding enters intensive mixer by conveying equipment, are opened
Dynamic dedusting ash silo, bentonite storehouse and second are returned mine the conveying equipment and measuring equipment of feed bin, by dedusting ash, bentonite and qualified are returned
Ore deposit is added agent batch operation according to Iron concentrate setting proportioning, and is together mixed with Iron concentrate into intensive mixer
Operation；
Step 9：Profit mill, it is referred to as mixed by Iron concentrate, dedusting ash, bentonite and the qualified compound of returning mine of strength mixing
Material is closed, ball mill is delivered to and carries out profit mill operation；
Step 10：Compound enters feed bin (abbreviation pelletizing storehouse) the progress pelletizing operation on pelletizer top after pelletizing, profit mill,
The green-ball obtained from pelletizer carries out pellet production according to grate kiln method, and such a method is already belonging to general technology,
Repeat no more.
Specifically, when needing to use high pressure roller mill to carry out returning mine broken, it should first confirm that in the feed bin of pelletizing storehouse
Compound disclosure satisfy that after the pelletizing job requirements of certain time, be then shut off the measuring equipment and conveying equipment of Iron concentrate,
Order opens high pressure roller mill crushing operation of returning mine according to step one to step 3, now should be noted the discharging of observation high pressure roller mill bottom
Mouthful, returning mine constantly after high pressure roller mill bottom discharging opening is crushed shows that high pressure roller mill top stock column is only left to return mine, this
When change the flow direction of material by adjusting the conveying device of high pressure roller mill bottom, the high pressure roller mill crushing operation of Iron concentrate terminates,
High-pressure roller mill terminates open type Iron concentrate wet method fine grinding operation, closed cycle crushing operation of returning mine is proceeded by, while should stop
The additive formulations operation returned mine after dedusting ash, bentonite and high pressure roller mill are broken；
Specifically, when needing to carry out Iron concentrate high pressure roller mill wet method fine grinding operation, sequentially according to step 4 to step 10
Operated.
Specifically, the conveying equipment and measuring equipment in the step 2 and step 4 can use dragging with frequency control
Formula belted electronic balance, can adjust the rotating speed of variable-frequency motor according to adjustment return fines material uninterrupted according to the load of electronic scale.
Specifically, the scalper in the step 2 and step 5, which is removed, can use the roll screen progress miscellaneous material screen of bulk to remove, roller
Sieve gap 20mm.
Specifically, the conveying device of the high pressure roller mill bottom, which is used, can use turnover panel funnel or can be with positive and negative transhipment
The reversible belt machine conveying turned.
Specifically, step 6 mesohigh roller mill top stock column mainly is made up of two parts, one be lower half need it is broken
Return mine, two be that the first half needs the Iron concentrate batch of fine grinding.
Specifically, in the step 5 rotary kiln rotary drum dryer can be used in drying.
Specifically, described second feed bin is returned mine provided with weighing and sensing or level-sensing device, the capacity returned mine to second in feed bin is entered
Row measurement.
Specifically, the chalybeate goes out except iron content debris is gone out to remove by operation using electric magnetic iron remover.
Specifically, the Iron concentrate is exactly the general fine iron breeze of steel plant, predominantly magnetite powder and ground hematite, swollen
It is exactly the general bentonite of steel plant to moisten soil, also referred to as bentonite, mainly has calcium-base bentonite and sodium bentonite, returns mine and refer to chain
The unqualified pellet that comb machine bottom bulk cargo and finished product screen are screened out, dedusting ash be pelletizing production used in craft dust removal device and
Mixture in the dedusting ash that environmental dust removal device is collected, mainly there is electro-precipitating dust, multi-tube dusting ash, gravitational precipitator ash, whirlwind
The one or more of the dedusting ash such as dedusting ash, bag-type dust ash.
Produced according to process above process organization, return mine and (account for Iron concentrate, dedusting ash, bentonite with dosage about 8% and return mine
Quality summation), pellet day constant is not reduced, finished ball mean compressive strength 2800N/, fully meets product quality need
Ask, and return mine outward transport and processing cost is greatly reduced.
Combined specific illustrative embodiment describes the present invention above, but the implementation not limited to this of the present invention.
In the spirit and scope of the present invention, those skilled in the art can carry out various modifications and variations, and these modifications and variations will fall
Within the protection domain for entering claim restriction.
The technology of the invention not being described in detail, shape, construction part are known technology.
Claims (10)
1. a kind of pellet screening reuse method, it is characterised in that：Step one：Collection is returned mine, and is transported after the collection that will return mine to returning
In ore storage bin, wherein unqualified pellet two parts of granularity that the bulk cargo and finished product screen returned mine as drying grate bottom are screened out, first returns
Ore bunker is collection bulk cargo and the feed bin returned mine；
Step 2：Bulk and iron alloy member are screened out, the returning mine in storehouse that will return mine sets by conveying equipment and metering under storehouse of returning mine
Standby metering conveys and carries out scalper and removes to go out except operation with iron content debris；
Step 3：Prepare it is qualified return mine, will return mine by what bulk, iron content debris were removed and be transported to high pressure roller mill feed bin, use
High pressure roller mill carries out break process of returning mine, and returning mine after high pressure roller mill is broken is delivered on screening plant by conveying device to be carried out
Screening, two kinds of materials for being divided into+3mm (i.e. particle diameter ＞ 3mm) and -3mm (i.e. particle diameter ＜ 3mm) of returning mine after crushing, wherein+
3mm it is broken after return mine and returned mine storehouse by conveying device, by the order progress closed-type high-pressure roller mill of step one to step 3
Crushing operation is circulated, obtained broken returning mine for rear particle diameter -3mm is returned mine to be qualified, qualified to return mine after conveying equipment is transported
Returned mine feed bin into after broken second；
Step 4：Iron concentrate dispensing, second after broken returns mine feed bin capacity close to during production requirement, measures defeated under storehouse of returning mine
Equipment downtime is sent, stops conveying and returns mine, while starting the conveying equipment and measuring equipment of iron ore concentrate feed bin bottom to variety classes
Iron ore concentrate part carry out batch operation by proportioning；
Step 5：Iron concentrate is dried, and Iron concentrate batch is transported to dryer and carries out drying operation, if Iron concentrate batch
Water satisfied pellet forming process demand can also use bypass belt feeder directly convey and carry out scalper remove and iron content debris go out
Except operation；
Step 6：High pressure roller mill Iron concentrate, the Iron concentrate batch feeding high-pressure roller mill behind bulk, iron debris place to go is carried out
Wet method fine grinding operation, to ensure the one after another of high pressure roller mill, high pressure roller mill top stock column should be always ensured that in more than 3m；
Step 7：When carrying out step 6, observation high pressure roller mill bottom discharging opening is should be noted, discharging opening goes out when high pressure roller mill bottom
After existing fine grinding during Iron concentrate batch, show that high pressure roller mill top stock column is only left Iron concentrate batch, it is now high by adjusting
The conveying device of pressure roller mill bottom changes the flow direction of material, and the high pressure roller mill crushing operation returned mine terminates, and high-pressure roller mill terminates
Closed cycle crushing operation, proceeds by open type Iron concentrate fine grinding operation, and the Iron concentrate after fine grinding enters strong by conveying equipment
Power mixture operation；
Step 8：Additive formulations are prepared, when the Iron concentrate after fine grinding enters intensive mixer by conveying equipment, startup is removed
Dirt ash silo, bentonite storehouse and second are returned mine the conveying equipment and measuring equipment of feed bin, by dedusting ash, bentonite and it is qualified return mine by
Agent batch operation is added according to Iron concentrate setting proportioning, and together enters intensive mixer with Iron concentrate and carries out mixing work
Industry；
Step 9：Profit mill, by Iron concentrate, dedusting ash, bentonite and the qualified compound of returning mine of strength mixing, is referred to as mixed
Material, is delivered to ball mill and carries out profit mill operation；
Step 10：Compound enters the feed bin (abbreviation pelletizing storehouse) on pelletizer top and carries out pelletizing operation after pelletizing, profit mill, from making
The green-ball obtained in ball machine carries out pellet production according to grate kiln method.
2. a kind of pellet screening reuse method according to claim 1, it is characterised in that：When needing to use high pressure roller mill
When progress returns mine broken, it should first confirm that the compound in the feed bin of pelletizing storehouse disclosure satisfy that the pelletizing operation of certain time is needed
After asking, the measuring equipment and conveying equipment of Iron concentrate are then shut off, sequentially high pressure of returning mine is opened according to step one to step 3
Roller grinds crushing operation, observation high pressure roller mill bottom discharging opening is now should be noted, after high pressure roller mill bottom discharging opening is crushed
Return mine constantly, show that high pressure roller mill top stock column is only left to return mine, now by adjusting the conveying device of high pressure roller mill bottom
Change the flow direction of material, the high pressure roller mill crushing operation of Iron concentrate terminates, and high-pressure roller mill terminates open type Iron concentrate wet method fine grinding
Operation, proceeds by closed cycle crushing operation of returning mine, while should stop returning mine after dedusting ash, bentonite and high pressure roller mill are broken
Additive formulations operation.
3. a kind of pellet screening reuse method according to claim 1, it is characterised in that：When needing, progress Iron concentrate is high
When pressure roller grinds wet method fine grinding operation, sequentially operated according to step 4 to step 10.
4. a kind of pellet screening reuse method according to claim 1, it is characterised in that：The step 2 and step 4
In conveying equipment and measuring equipment can use the towed belted electronic balance with frequency control, can be according to the discharging of electronic scale
The rotating speed of amount adjustment variable-frequency motor is according to adjustment return fines material uninterrupted.
5. a kind of pellet screening reuse method according to claim 1, it is characterised in that：The step 2 and step 5
In scalper except can use roll screen carry out the miscellaneous material screen of bulk remove, roll screen gap 20mm.
6. a kind of pellet screening reuse method according to claim 1, it is characterised in that：The high pressure roller mill bottom
Conveying device, which is used, can use turnover panel funnel or the reversible belt machine that can be operated with rotating to convey.
7. a kind of pellet screening reuse method according to claim 1, it is characterised in that：On step 6 mesohigh roller mill
Portion's stock column is mainly made up of two parts, one be lower half need it is broken return mine, two be that the first half needs the Iron concentrate of fine grinding to coordinate
Material.
8. a kind of pellet screening reuse method according to claim 1, it is characterised in that：Drying in the step 5
Rotary kiln rotary drum dryer can be used.
9. a kind of pellet screening reuse method according to claim 1, it is characterised in that：Described second feed bin of returning mine is set
There are weighing and sensing or level-sensing device, the capacity returned mine to second in feed bin is measured.
10. a kind of pellet screening reuse method according to claim 1, it is characterised in that：The Iron concentrate is exactly steel
The general fine iron breeze in ironworks, predominantly magnetite powder and ground hematite；
The bentonite is exactly the general bentonite of steel plant, also referred to as bentonite, mainly there is calcium-base bentonite and sodium bentonite,
Return mine the unqualified pellet for referring to that drying grate bottom bulk cargo and finished product screen are screened out；
The dedusting ash is the mixing in the dedusting ash that craft dust removal device and environmental dust removal device used in pelletizing production are collected
Thing, the one kind for mainly having the dedusting ash such as electro-precipitating dust, multi-tube dusting ash, gravitational precipitator ash, cyclone dust removal ash, bag-type dust ash
Or it is a variety of.
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| CN109250418A (en) * | 2018-09-30 | 2019-01-22 | 四川德胜集团钒钛有限公司 | Returning charge recovery system and its method for recycling returning charge in a kind of pelletizing production technique |
| CN109772550A (en) * | 2017-11-15 | 2019-05-21 | 宝山钢铁股份有限公司 | A kind of auxiliary material crushes and pellet material screening integration system and integration method |
| CN111468268A (en) * | 2020-04-15 | 2020-07-31 | 中天钢铁集团有限公司 | Pellet composite ore grinding system and pellet composite ore grinding method |
| CN112978232A (en) * | 2021-02-03 | 2021-06-18 | 广东韶钢松山股份有限公司 | Feeding mechanism and sintering mixing device |
| CN113186392A (en) * | 2021-04-02 | 2021-07-30 | 首钢京唐钢铁联合有限责任公司 | Pelletizing method for realizing efficient utilization of metallurgical solid wastes |
| CN113584303A (en) * | 2021-08-06 | 2021-11-02 | 舞钢中加钢铁有限公司 | Production ingredient capable of improving quality of finished pellets and preparation process thereof |
| CN114015869A (en) * | 2021-10-27 | 2022-02-08 | 重庆臻焱节能环保科技有限公司 | Cold-pressed ball production process based on sintering return ores |
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| CN109772550A (en) * | 2017-11-15 | 2019-05-21 | 宝山钢铁股份有限公司 | A kind of auxiliary material crushes and pellet material screening integration system and integration method |
| CN109772550B (en) * | 2017-11-15 | 2020-10-27 | 宝山钢铁股份有限公司 | System and method for integrating auxiliary raw material crushing and pellet material screening |
| CN109250418A (en) * | 2018-09-30 | 2019-01-22 | 四川德胜集团钒钛有限公司 | Returning charge recovery system and its method for recycling returning charge in a kind of pelletizing production technique |
| CN111468268A (en) * | 2020-04-15 | 2020-07-31 | 中天钢铁集团有限公司 | Pellet composite ore grinding system and pellet composite ore grinding method |
| CN111468268B (en) * | 2020-04-15 | 2021-10-01 | 中天钢铁集团有限公司 | Pellet composite ore grinding system and pellet composite ore grinding method |
| CN112978232A (en) * | 2021-02-03 | 2021-06-18 | 广东韶钢松山股份有限公司 | Feeding mechanism and sintering mixing device |
| CN113186392A (en) * | 2021-04-02 | 2021-07-30 | 首钢京唐钢铁联合有限责任公司 | Pelletizing method for realizing efficient utilization of metallurgical solid wastes |
| CN113584303A (en) * | 2021-08-06 | 2021-11-02 | 舞钢中加钢铁有限公司 | Production ingredient capable of improving quality of finished pellets and preparation process thereof |
| CN114015869A (en) * | 2021-10-27 | 2022-02-08 | 重庆臻焱节能环保科技有限公司 | Cold-pressed ball production process based on sintering return ores |
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