CN205077120U - Continuous processing system of large -scale blast furnace lump ore - Google Patents

Continuous processing system of large -scale blast furnace lump ore Download PDF

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Publication number
CN205077120U
CN205077120U CN201520865318.6U CN201520865318U CN205077120U CN 205077120 U CN205077120 U CN 205077120U CN 201520865318 U CN201520865318 U CN 201520865318U CN 205077120 U CN205077120 U CN 205077120U
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blast furnace
lump ore
transfer mechanism
sieve
ore
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陈晓飞
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Anhui Masteel Engineering and Technology Group Co Ltd
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Anhui Masteel Engineering and Technology Group Co Ltd
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Abstract

The utility model discloses a continuous processing system of large -scale blast furnace lump ore can supply the lump ore for many large -scale blast furnaces on line, belongs to ore processing technique field in advance. The utility model discloses a conveyor, drying device and screening plant, screening plant involving vibrations sieve, the blast furnace lump ore is carried to the drying -machine feed end through conveying mechanism A by former stock ground, and drying -machine discharge end and shale shaker feed end are connected through conveying mechanism B, and conveying mechanism C is passed through in the ejection of compact of shale shaker plus sieve and blast furnace lump ore buffering ore deposit groove is connected, the ejection of compact of shale shaker minus sieve is returned former stock ground through conveying mechanism D and is supplied the sintering. The utility model discloses a blast furnace lump ore gets into and carries out bolting after drying before in blast furnace ore deposit groove, makes and leads to the fact a large amount of powder of surface adhesion and the big lump ore of viscosity effectively to be sieved because of moisture including the powder height to improve the blast furnace gas permeability, reach energy saving and consumption reduction, reduce the blast furnace process cost, reduce the high furnace operating degree of difficulty and guarantee the working of a furnace and stablize the purpose of direct motion, effectively reduce the pressure that sieves simultaneously in the groove under.

Description

A kind of large blast furnace lump ore continous processing system
Technical field
The utility model belongs to ore preconditioning technique field, is a kind of large blast furnace lump ore continous processing system specifically.
Background technology
As everyone knows, Under Different Concentrate Supplementing Level ironmaking enterprise energy-conservation in have important effect, be also BF burden optimization, the important factor that impact consumes, fine fodder is that reinforcing blast furnace is smelted and realized the basic substance of high yield, high-quality, low consumption.Reduce the fluctuation of material composition, pay attention to the whole grain of raw material, minimizing chip index etc. is all conducive to the direct motion of blast furnace, can reduce coke ratio and energy efficient.Facts have proved, if ironmaking production conscientious can carry out pre-treatment to raw material, just can obtain obvious economical effectiveness, all costs paid in raw material preparation, can be compensated from the economic benefit of blast furnace ironmaking.Therefore, carry out blast furnace ironmaking quality-charge technique and have great meaning for raising Iron And Steel Industry usefulness, the energy-saving and emission-reduction work carried out under the new situation, particularly along with national cleaner production requires to improve constantly, high quality burden dynamics is implemented in blast furnace ironmaking increasing has become inevitable.
At present, enter the general viscosity of stove lump ore large, high containing powder, particularly the overseas general moisture content of imported lump ore reaches about 6%, containing powder rate up to more than 20%.Due to water transport supplied materials, shipment distance remote logistics link is many, outdoorly in circular flow stores up, and having bad luck handling increases the reasons such as damaged, makes lump ore contain powder rate even up to more than 30%.The increase that lump ore is moisture simultaneously causes lump ore surface adhesion a large amount of powders, when sieving, vibration sieve plate is usually blocked, do not have screening effect, the fine ore of lump ore surface adhesion is caused finally to enter blast furnace, affect blast furnace permeability, not only increase blast-furnace smelting cost, also have impact on the stable smooth operation of conditions of blast furnace.
Current most of iron and steel enterprise directly adopts Vibration Screen division technique, and this method uses more in northern iron and steel enterprise, and dry weather vibration sieve plate not easily blocks, and screening efficiency is high, and product can be protected less in annual rainwater sky, and investment and run, maintenance cost is lower.Small part iron and steel enterprise adopts vibratory screening apparatus water developing technique, on the vibrating portion and arrange shower nozzle around, in screening process and the lump ore at endless belt conveyor input and output material position rinse, effectively can screen out the fine ore of cleaning lump ore surface adhesion.But wash-down water flashes and causes environment poor, screening transportation equipment is seriously impaired, and sewage needs integrated system process, and the large investment of project occupation of land area is high, and operation, maintenance cost are also than Vibration Screen division technique high several times.
Along with the requirement that development and the ironmaking efficient economy of iron-smelting blast furnace operative technique are produced, it is more and more high that blast furnace lump ore enters stove ratio.Smelt because lump ore directly can enter stove as high-quality iron-bearing material, not only can save agglomerates of sintered pellets agglomeration operation and energy consumption, the pollution that effective reduction agglomerates of sintered pellets operation produces environment, and can the abundant domestic and international iron ore resource of Appropriate application, all higher from the lump ore TFe content of external import, improve and be conducive to improving feed grade, particularly when lump ore market value is reasonable into stove ratio, increase lump ore as far as possible to enter stove and can reduce ironmaking cost, improve blast furnace technology economic target.
In iron and steel enterprise under the overall multiplicative overall background of lump ore demand, when using external iron ore especially more, seek a kind of to water ratio, the processing method of effectively sieving containing powder rate height lump ore, still blast furnace ironmaking is not produced in the urgent need to, blast furnace technology development need especially.
China Patent Publication No.: CN203526070U, a kind of ironmaking low cost lump ore that patent document discloses of publication date: 2014.04.09 dries screening system, it comprises: dryer, for drying wet lump ore, comprising the opening for feed for inputting wet lump ore, exporting the discharge port of dry lump ore; Vibratory screening apparatus, is connected with the discharge port of described dryer, for sieving dry lump ore.This utility model can solve the screening problem containing powder water content height lump ore, and technique is simple, and cost of investment is few, and working cost is low.But the drying system of this utility model is not independent system, can only use under specified conditions; Fly-ash separator is just connected to dryer, to the dedusting of other links of whole system without consideration, can not meet the requirement of Environmental and post dust.
Utility model content
1. the technical problem that will solve
For water ratio in prior art, be difficult to sieve containing powder rate blast furnace lump ore and existingly dry the problem that screening easily causes environmental pollution, the utility model provides a kind of large blast furnace lump ore continous processing system, the online lump ore provided together needed for many large blast furnaces production.It enters bolting after can realizing drying before blast furnace lump ore enters blast furnace ore tank, make to cause a large amount of powder of surface attachment and the large lump ore of viscosity is effectively sieved because of moisture containing powder is high, thus greatly improve blast furnace permeability, energy-saving and cost-reducing, reduce blast-furnace smelting cost, reduce blast furnace operating difficulty, guarantee working of a furnace stable smooth operation, effectively reduce the pressure of vibration sieve simultaneously, and dust is processed thoroughly, avoid the pollution to environment.
2. technical scheme
The utility model scheme is carried out in the following manner:
A kind of large blast furnace lump ore continous processing system, comprise e Foerderanlage, drying unit and screening plant, e Foerderanlage comprises transfer mechanism A, transfer mechanism B, transfer mechanism C and transfer mechanism D; Drying unit comprises dryer; Screening plant involving vibrations sieves; Blast furnace lump ore is delivered to dryer feeding end by stock yard through transfer mechanism A, and dryer discharge end is connected by transfer mechanism B with vibratory screening apparatus feed end, and Vibration Screen top discharge is connected with blast furnace lump ore buffering ore deposit groove by transfer mechanism C; Vibration Screen bottom discharge returns stock yard for sintering by transfer mechanism D.
Preferred version: drying unit also comprises drying shed, roasting kiln, gas supply device, dryer cleaning apparatus; Roasting kiln, dryer and drying shed are also connected in turn by the arrangement of material direct of travel; The external gas supply device of roasting kiln; Dryer cleaning apparatus is connected with drying shed.
Preferred version: also comprise environmental dust removal device; Screening plant also comprises sieve compartment and the upper seal closure of sieve, and vibratory screening apparatus is fixedly installed in the sieve compartment by sieving the sealing of upper seal closure; Environmental dust removal device comprises environmental dust removal device, ash silo, cinder conveyer structure and blower fan, it enters dirt end and is connected with the upper seal closure of sieve and conveying reloading point guide storehouse, and the environmental dust removal device process communicated with blower fan is sucked into by blower fan, environmental dust removal device discharge end is connected by cinder conveyer structure with ash silo.
Preferred version: dryer cleaning apparatus is bubble dust collector; Environmental dust removal device is sack cleaner; Gas supply device also synchronously arranges nitrogen purging, uses when system maintenance, prevents gas impurity from hardening at inner-walls of duct, and affects air pressure.
Preferred version: adopt self-cleaning rod vibratory screening apparatus in sieve compartment, screen cloth specification is 5mm; Transfer mechanism A, transfer mechanism B, transfer mechanism C, transfer mechanism D and cinder conveyer structure are endless belt conveyor or scraper conveyor.
3. beneficial effect
The technical scheme adopting the utility model to provide, compared with existing known technology, has following unusual effect:
(1) a kind of large blast furnace lump ore continous processing system of the present utility model, can processing various water ratio, containing the high lump ore of powder rate, by regulating lump ore storing temperature, sieving under the condition that optimum is moisture;
(2) a kind of large blast furnace lump ore continous processing system of the present utility model, screening efficiency greatly improves makes lump ore sieve completely, the neat not adhering powder of lump ore surface clean on sieve;
(3) a kind of large blast furnace lump ore continous processing system of the present utility model, vibratory screening apparatus can work under best working condition, and vibratory screening apparatus can play maximum capacity; The non-caked blocking of vibration sieve plate, does not need operator scene to get rid of, reduces therefore and the security incident of generation;
(4) a kind of large blast furnace lump ore continous processing system of the present utility model, can reduce screening airborne dust greatly, decreasing pollution thing generation from source, reduces dust removal installation working load;
(5) a kind of large blast furnace lump ore continous processing system of the present utility model, the smooth and easy spare parts that makes of workflow damages less, and greatly reduce production line repair and maintenance amount, the Whole Equipment life-span is improved simultaneously;
(6) a kind of large blast furnace lump ore continous processing system of the present utility model, maximize by realizing energy saving and cost lowering synergy, the raising of quality product, output meets the needs of blast furnace ironmaking production; The minimizing of airborne dust reduces the power consumption of dust removal installation, and spare parts damages and decreases running cost less, also reduces and changes spare parts to the impact of producing;
(7) a kind of large blast furnace lump ore continous processing system of the present utility model, according to carrying out ore deposit water ratio, in conjunction with factor impacts such as transfers in weather, environment, way, the lump ore of suitable water ratio is reached through baking, at utmost can play screening efficiency, at utmost reduce screening airborne dust, at utmost reduce spare part wearing and tearing, at utmost improve execute-in-place, at utmost meet power conservation requirement; Process orientation selecting properly processing method is accurately developed, and forms each side and supports benign cycle each other at many levels, and optimum Working superposition promotes production line function, reaches excellent technico-economical comparison and creates good benefit.
Accompanying drawing explanation
Accompanying drawing 1 is the schematic diagram of a kind of large blast furnace lump ore of the utility model continous processing system.
In figure: 2, drying unit; 3, screening plant 4, environmental dust removal device; 11, transfer mechanism A; 12, transfer mechanism B; 13, transfer mechanism C; 14, transfer mechanism D; 20, drying shed; 21, dryer; 22, roasting kiln; 23, gas supply device; 24, dryer cleaning apparatus; 30, sieve compartment; 31, seal closure on sieve; 32, vibratory screening apparatus; 41, environmental dust removal device; 42, ash silo; 43, cinder conveyer structure; 44, blower fan; 45, dirt end is entered.
Embodiment
Below in conjunction with accompanying drawing and specific embodiment, the utility model is described in detail.
Embodiment 1
The large blast furnace lump ore continous processing system of the present embodiment, comprises e Foerderanlage, drying unit 2 and screening plant 3, and e Foerderanlage comprises transfer mechanism A11, transfer mechanism B12, transfer mechanism C13 and transfer mechanism D14; Drying unit 2 comprises dryer 21; Screening plant 3 involving vibrations sieve 32; Blast furnace lump ore is delivered to dryer 21 feed end by stock yard through transfer mechanism A11, and dryer 21 discharge end is connected by transfer mechanism B12 with vibratory screening apparatus 32 feed end, and vibratory screening apparatus 32 is sieved top discharge and is connected with blast furnace lump ore buffering ore deposit groove by transfer mechanism C13; Vibratory screening apparatus 32 sieves bottom discharge and returns stock yard for sintering by transfer mechanism D14.Transfer mechanism A11 transfer mechanism B12, transfer mechanism C13 and transfer mechanism D14 are endless belt conveyor.
The large blast furnace lump ore continous processing system of the present embodiment, during concrete use: blast furnace lump ore is transported to drying unit 2 by stock yard by endless belt conveyor and dries, baking reaches the lump ore being suitable for sieving water ratio and is delivered to screening plant 3 through endless belt conveyor and sieves, after screening, the upper qualified lump ore of sieve is transported to the groove storage of lump ore buffering ore deposit through endless belt conveyor, control stream by chute under groove and electric hydraulic sector gate to enter outer to transport for rubber conveyer and be sent to user's point, after screening, the upper qualified lump ore of sieve also can Firsthand Users point; Sieve bottom discharge then returns stock yard for sintering by endless belt conveyor, also can recycle by Firsthand Users point.
Embodiment 2
The blast furnace lump ore continous processing system of the present embodiment, basic structure is with embodiment 1, and as shown in Figure 1, improvements are: also comprise environmental dust removal device 4; Screening plant 3 also comprises sieve compartment 30 and the upper seal closure 31 of sieve, and vibratory screening apparatus 32 is fixedly installed in the sieve compartment 30 by sieving the sealing of upper seal closure 31; Environmental dust removal device 4 comprises environmental dust removal device 41, ash silo 42, cinder conveyer structure 43 and blower fan 44, it enters dirt end 45 and is connected with the upper seal closure 31 of sieve and conveying reloading point guide storehouse, and be sucked into by blower fan 44 the environmental dust removal device 41 communicated with blower fan 44 and process, environmental dust removal device 41 discharge end is connected drying unit 2 with ash silo 42 by cinder conveyer structure 43 and also comprises drying shed 20, roasting kiln 22, gas supply device 23, dryer cleaning apparatus 24; Roasting kiln 22, dryer 21 and drying shed 20 are also connected in turn by the arrangement of material direct of travel; The external gas supply device 23 of roasting kiln 22; Dryer cleaning apparatus 24 is connected with drying shed 20; Dryer cleaning apparatus 24 is bubble dust collector; Environmental dust removal device 41 is sack cleaner; Gas supply device 23 also synchronously arranges nitrogen purging, uses when system maintenance, prevents gas impurity from hardening at inner-walls of duct; Adopt self-cleaning rod vibratory screening apparatus in sieve compartment 30, screen cloth specification is 5mm; Transfer mechanism A11, transfer mechanism B12, transfer mechanism C13, transfer mechanism D14 and cinder conveyer structure 43 is endless belt conveyor.
The large blast furnace lump ore continous processing system of the present embodiment, is applied to certain Iron And Steel Company's imported lump ore, toasts rear screening to lump ore, and efficiently solve vibration sieve plate blocking, greatly improve screening efficiency, lump ore surface adhesion a large amount of powders and screened out.Calculate according to Ironmaking Design and decline 1.5% into stove lump ore containing powder, can coke ratio ~ 0.8% be reduced.Enforcement is calculated after putting into operation, and can save coke ~ 2.4kg/ ton iron, and by annual output 1150 ten thousand tons of iron, year saves 2.76 ten thousand tons, coke, by 1500 yuan/ton, coke, reduces costs 4,140 ten thousand yuan year, remarkable in economical benefits.According to knowhow, active effect is served to operation of blast furnace production and steady running simultaneously.
Embodiment 3
The large blast furnace lump ore continous processing system of the present embodiment, basic structure is with embodiment 2, improvements are: drying shed 20 is the cylindrical shape rolling fortune rotation, inside is provided with spiral helicine charging guide plate along inner face, flowing for material provides sufficient power and orderly guiding, charging guide plate can also play the effect of material stirring, make the oven dry of material evenly.
Schematically above be described the utility model and embodiment thereof, this description does not have restricted, and also just one of the embodiment of the present utility model shown in accompanying drawing, actual structure is not limited thereto.So, if those of ordinary skill in the art enlightens by it, when not departing from the utility model and creating aim, design the frame mode similar to this technical scheme and embodiment without creationary, protection domain of the present utility model all should be belonged to.

Claims (5)

1. a large blast furnace lump ore continous processing system, comprises e Foerderanlage, drying unit (2) and screening plant (3), it is characterized in that:
Described e Foerderanlage comprises transfer mechanism A (11), transfer mechanism B (12), transfer mechanism C (13) and transfer mechanism D (14); Described drying unit (2) comprises dryer (21); Described screening plant (3) involving vibrations sieve (32);
Blast furnace lump ore is delivered to dryer (21) feed end by stock yard through transfer mechanism A (11), dryer (21) discharge end is connected by transfer mechanism B (12) with vibratory screening apparatus (32) feed end, and vibratory screening apparatus (32) sieve top discharge is connected with blast furnace lump ore buffering ore deposit groove by transfer mechanism C (13); The bottom discharge of vibratory screening apparatus (32) sieve returns stock yard for sintering by transfer mechanism D (14).
2. a kind of large blast furnace lump ore continous processing system according to claim 1, is characterized in that: described drying unit (2) also comprises drying shed (20), roasting kiln (22), gas supply device (23), dryer cleaning apparatus (24); Described roasting kiln (22), dryer (21) and drying shed (20) are also connected in turn by the arrangement of material direct of travel; The external gas supply device (23) of described roasting kiln (22); Described dryer cleaning apparatus (24) is connected with drying shed (20).
3. a kind of large blast furnace lump ore continous processing system according to claim 2, is characterized in that: also comprise environmental dust removal device (4); Described screening plant (3) also comprises sieve compartment (30) and the upper seal closure (31) of sieve, and vibratory screening apparatus (32) is fixedly installed on by sieving in sieve compartment (30) that upper seal closure (31) seals; Described environmental dust removal device (4) comprises environmental dust removal device (41), ash silo (42), cinder conveyer structure (43) and blower fan (44), it enters dirt end (45) and is connected with the upper seal closure (31) of sieve and conveying reloading point guide storehouse, and be sucked into the environmental dust removal device (41) communicated with blower fan (44) process by blower fan (44), environmental dust removal device (41) discharge end is connected by cinder conveyer structure (43) with ash silo (42).
4. a kind of large blast furnace lump ore continous processing system according to claim 3, is characterized in that: described dryer cleaning apparatus (24) is bubble dust collector; Described environmental dust removal device (41) is sack cleaner; Described gas supply device (23) also synchronously arranges nitrogen purging.
5. a kind of large blast furnace lump ore continous processing system according to claim 3, is characterized in that: adopt self-cleaning rod vibratory screening apparatus in described sieve compartment (30), screen cloth specification is 5mm; Described transfer mechanism A (11), transfer mechanism B (12), transfer mechanism C (13), transfer mechanism D (14) and cinder conveyer structure (43) are endless belt conveyor or scraper conveyor.
CN201520865318.6U 2015-10-29 2015-10-29 Continuous processing system of large -scale blast furnace lump ore Active CN205077120U (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109813849A (en) * 2019-02-14 2019-05-28 中国矿业大学 A method of dust suppression foaming properties are quantitatively evaluated

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109813849A (en) * 2019-02-14 2019-05-28 中国矿业大学 A method of dust suppression foaming properties are quantitatively evaluated
CN109813849B (en) * 2019-02-14 2021-07-30 中国矿业大学 Method for quantitatively evaluating performance of dust suppression foam

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