CN103194561A - Device for directly adding sintering returned dust into ladle - Google Patents
Device for directly adding sintering returned dust into ladle Download PDFInfo
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- CN103194561A CN103194561A CN2013101155700A CN201310115570A CN103194561A CN 103194561 A CN103194561 A CN 103194561A CN 2013101155700 A CN2013101155700 A CN 2013101155700A CN 201310115570 A CN201310115570 A CN 201310115570A CN 103194561 A CN103194561 A CN 103194561A
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Abstract
The invention discloses a device for directly adding sintering returned dust into a ladle. The device comprises a ladle and an aggregation bucket. A pneumatic quadrant valve is arranged at the blanking opening of the aggregation bucket; a bucket belt is arranged below the aggregation bucket; a material inlet of the bucket belt corresponds to the blanking opening of the aggregation bucket; a blanking collecting bucket is arranged at a material outlet at an uptrend end of the bucket belt; the bottom end of a blanking pipe of the blanking collecting bucket is fixedly connected with a guide pipeline; an outlet of the guide pipeline is positioned above the ladle and corresponds to a melted iron outlet of a blast furnace; a rotating device is arranged at the upper part of the blanking pipe of the blanking collecting bucket; three or more weighing sensors are uniformly distributed at the lower edge the aggregation opening of the aggregation bucket; signal terminals of the weighing sensors are connected with control devices; and output terminals of the control devices are respectively connected with a pneumatic device, the rotating device and a control terminal for driving the bucket belt. The device directly adds granule dust into the ladle, saves the process of resintering of sintering returned dust, reduces the consumption of steel and iron material, and reduces the production cost.
Description
Technical field
The present invention relates to a kind of supplementary unit in the Iron and Steel Production field, specifically a kind of feeding device.
Background technology
At present, the steel market situation is increasingly serious, and the production cost that how to reduce iron and steel just becomes the target that each steelworks is pursued day by day.Steel generally all extract from iron ore, and basically, the raw material of steel is iron ore.From the iron ore to the steel, several different technology approach are arranged.Most importantly " blast furnace approach ", iron ore is smelt the pig iron earlier in blast furnace, be raw material with the pig iron again, is smelt steel with different methods.Blast furnace ironmaking is the main method of modern ironmaking, is the important step in the Iron and Steel Production, but the breeze that comes from the mine is because granularity is too little, ventilation property is very poor, cause blast furnace to be selected materials easily and collapse material, therefore can not need earlier sintering mineral powder to be become agglomerate directly into blast furnace.The sintering of breeze is one of step of blast furnace ironmaking, be before blast furnace ironmaking is produced, the powdery iron-containing raw material that will be broken into by iron ore powder, allocate an amount of fuel and flux into, add an amount of water, make material that a series of physicochemical change take place through mixing with after making ball at agglomerating plant, sinter block agglomerate into.Agglomerate mainly is the compound of iron and oxygen, and granularity is bigger, and is vesicular structure, and intensity is also bigger, can guarantee the direct motion of blast furnace.
Blast furnace production is carried out continuously.During production, (general furnace roof is planted with hopper by material and is formed from furnace roof, modernized blast furnace is clock valve furnace roof and no bell furnace roof) constantly pack into agglomerate, coke, flux, blow into hot blast (1000～1300 degrees centigrade) from the air port of bottom house, spray into fuel such as oil, coal or Sweet natural gas.Raw material, fuel descend along with the carrying out of processes such as melting in the stove.Under the high temperature, furnace charge descend and the coal gas uphill process in, successively conduct heat, reduce, dissolve, take off the charcoal effect and generate the pig iron, molten iron is emitted from iron notch.The flux such as Wingdale of ash content in gangue in the agglomerate, coke and the injection material in adding stove is combined and is generated slag, discharges respectively from iron notch and slag notch.Coal gas is derived from furnace roof, after dedusting, as industrial coal gas.The conditions of blast furnace stable smooth operation refers to that generally the furnace charge in the stove descends and coal gas stream rises evenly, and furnace temperature is plentifully stable, and the pig iron is qualified, high yield and low cost.
But the powder particles under total some sieve of the agglomerate of making as the sintering plant of blast furnace raw material is too little, its particle diameter has only 4～5mm or littler, if this part sintering back powder is directly added blast furnace to be used, then 1000～1300 degrees centigrade hot blast blowing into of bottom house air port is enough to make it to be suspended in Top of BF, can not guarantee that furnace charge descends evenly, and then influence carrying out smoothly of reduction reaction in the blast furnace, therefore this short grained sintering back powder can not directly be gone into blast furnace when raw material and used, have only its sintering again, this has increased production cost undoubtedly.
Summary of the invention
The technical issues that need to address of the present invention provide a kind of for the device that directly adds the sintering back powder to hot metal ladle, this device can realize that the sintering back powder that granularity is less joins in the molten iron, realize fully merging with the molten iron of blast-furnace smelting, thereby save the sintering back powder operation of sintering again, reduce production costs.
For solving the problems of the technologies described above, the technical solution adopted in the present invention is:
Be used for directly adding to hot metal ladle the device of sintering back powder, comprise with the hot metal ladle of corresponding placements of the molten iron of blast furnace outlet and the taper that holds the sintering back powder and gather bucket, the described feed opening that gathers bucket be provided with driven by pneumatics, be used for controlling the pneumatic quadrant valve that the sintering back powder is discharged; The below that correspondence gathers the feed opening of bucket is provided be used to the ramped shaped bucket type belt of accepting and transmit the sintering back powder, the opening for feed of described bucket type belt is corresponding with the feed opening that gathers bucket, the bucket type belt raise up the end the discharge port place be provided with the blanking collection bucket, the guide duct that the tremie pipe bottom fixedly connected guiding sintering back powder of blanking collection bucket flows to, the outlet of described guide duct are positioned at the hot metal ladle top; The top of described blanking collection bucket tremie pipe is provided with for the wheelwork of regulating the guide duct position; Describedly gather lower edge that bucket gathers materials mouthful and be evenly equipped with and be used for the LOAD CELLS that weighing gathers the gross weight that struggles against more than three or three;
The signal end of described LOAD CELLS is connected with control device, and the output terminal of control device is connected with the control end of pneumatics, wheelwork and driving bucket type belt respectively.
Further improvement of the present invention is: described wheelwork comprises the worm gear fixedly connected with blanking collection bucket tremie pipe top, the worm screw that is meshed with worm gear and drives the worm screw motor rotating that the input terminus of motor connects the output terminal of control device.
Further improvement of the present invention is: be provided with below the described blanking collection bucket tremie pipe for the back up pad that supports the blanking collection bucket, back up pad is provided with bearing housing, set gradually the thrust ball bearing and the deep groove ball bearing that make the rotation of blanking collection bucket in the bearing housing from top to bottom, also be provided with axle sleeve between thrust ball bearing and the deep groove ball bearing, the end cap that the bearing housing upper end is provided for sealing.
Further improvement of the present invention is: described pneumatics comprises the cylinder that is communicated with gas source pipe and is arranged on the solenoid operated directional valve that is used for the control cylinder action on the gas source pipe, the control end of described solenoid operated directional valve connects the output terminal of control device, and the piston rod of cylinder is connected with the control end of pneumatic quadrant valve.
Further improvement of the present invention is: also be provided with the source of the gas three linked piece of being made up of air reducing valve, strainer, oil sprayer on the described gas source pipe.
Further improvement of the present invention is: described bucket type belt zygomorphy is provided with the upright partially wheel of retaining.
Further improvement of the present invention is: the described material level that adds that gathers bucket is provided with guardrail.
Further improvement of the present invention is: described top of gathering bucket arranges the flue dust collecting bucket.
Further improvement of the present invention is: the described cross section that gathers bucket is square, and mouthful foursquare length of side of gathering materials is greater than the foursquare length of side of feed opening.
Because the technical progress of having adopted technique scheme, the present invention to obtain is:
The present invention directly joins in the molten iron of blast-furnace smelting by the less sintering back powder of the granularity that sintering plant is made, and has saved the sintering back powder operation of sintering again, has reduced iron and steel stock consumption, reduces production costs.
The present invention can just directly join small-particle sintering back powder in the molten iron without sintering again, and makes silicon and sintering back powder in the molten iron carry out abundant chemical reaction, makes the silicon in the molten iron just be down to reasonable range before entering converter.With the molten iron converter of packing into, smelt through oxygen blast again, can reduce silicone content in the molten steel greatly, avoid carrying out other loaded down with trivial details operation again for the high silicone content that reduces in the molten steel, create favourable operational condition for the grate worker, slowed down splash simultaneously, be conducive to reduce the consumption of molten iron.
Gather bucket and be set to taper, its inner material stock all is used effectively.Gather the bucket material and select for use the Q345 plate to replace common A3 plate, can prolong the work-ing life of gathering bucket.
Gather the bucket feed opening pneumatic quadrant valve is set, pneumatic quadrant valve is controlled by solenoid operated directional valve, and the control end of solenoid operated directional valve is controlled by control device, can realize gathering the remote control that the bucket feed opening opens and closes.The action button of solenoid operated directional valve is installed in the hot metal mixer operation room, by hot metal mixer operative employee operation, has also saved manpower simultaneously.
Increase a source of the gas three linked piece of being formed by air reducing valve, strainer, oil sprayer on the gas source pipe, wherein, air reducing valve can carry out voltage stabilizing to source of the gas, makes source of the gas be in steady state, can reduce when suddenling change because of source of the gas air pressure the damage to hardware such as solenoid operated directional valve and cylinders.Strainer is used for the cleaning to source of the gas, can filter the airborne moisture content of compression, avoids moisture content to enter solenoid operated directional valve and cylinder with gas, influences the performance of solenoid operated directional valve or cylinder.Oil sprayer can be lubricated solenoid operated directional valve and cylinder, in order to prolong the work-ing life of solenoid operated directional valve and cylinder.
The zygomorphy of bucket type belt arranges the upright partially wheel of retaining, can prevent the bucket type belt deviation, guarantees the normal safe handling of bucket type belt.
The raise up discharge port place of an end of bucket type belt arranges blanking collection bucket and the guide duct that can rotate, make the outlet of guide duct be positioned at the hot metal ladle top, can guarantee that the sintering back powder can accurately convert in the molten iron, make the sintering back powder can reach best thawing effect.The top of blanking collection bucket tremie pipe arranges worm and gear wheelwork and deep groove ball bearing and thrust ball bearing, drive worm gear by rotary worm, thereby driving guide duct turns to, add that worm and gear can realize being transferred to a back self-locking, to guarantee to regulate at any time the blanking position of sintering back powder, assurance sintering back powder is fallen in the interior molten iron of hot metal ladle, and assurance sintering back powder is at utmost changed slag.
The material level that adds that gathers bucket arranges guardrail, can prevent that forklift to gathering in the bucket during filler gathering the collision of bucket, guaranteeing the safe handling of equipment.
Gather the bucket top and set up the flue dust collecting bucket, the flue dust collecting bucket connects cleaning shaft, and the airborne dust in the time of can avoiding adding back powder is to the pollution of surrounding environment and the injury of the person.
Description of drawings
Fig. 1 is structural representation of the present invention.
Wherein, 1, hot metal ladle, 2, the molten iron outlet, 3, guide duct, 4, thrust ball bearing, 5, deep groove ball bearing, 6, worm screw, 7, worm gear, 8, blanking collection bucket, 9, cylinder, 10, the bucket type belt, 11, LOAD CELLS, 12, gather bucket, 13, the flue dust collecting bucket, 14, cleaning shaft, 15, cylinder, 16, solenoid operated directional valve, 17, the source of the gas three linked piece, 18, gas source pipe, 19, pneumatic quadrant valve, 20, back up pad, 21, bearing housing, 22, axle sleeve, 23, end cap.
Embodiment
Below in conjunction with drawings and Examples the present invention is described in further details:
Be used for directly adding to hot metal ladle the device of sintering back powder, as shown in Figure 1, comprise with the hot metal ladle 1 of the molten iron outlet 2 corresponding placements of blast furnace, gather struggle against 12, bucket type belt 10, blanking collection bucket 8 and guide duct 3.
Wherein gather bucket 12 and be used for holding the sintering back powder, be shaped as taper, the cross section that gathers bucket 12 is square, gathers mouthful foursquare length of side of gathering materials of bucket 12 greater than the foursquare length of side of feed opening.The feed opening that gathers bucket 12 is provided with pneumatic quadrant valve 19, and pneumatic quadrant valve 19 is driven by pneumatics, is used for the discharging of control sintering back powder.When pneumatic quadrant valve 19 was opened, the sintering back powder fell from gathering bucket 12 end openings, and when pneumatic quadrant valve 19 was closed, the sintering back powder rested on and gathers in the bucket 12.
Pneumatics comprises the solenoid operated directional valve 16 of the cylinder 15 that is communicated with gas source pipe 18 and control cylinder 15 actions, solenoid operated directional valve 16 is arranged on the gas source pipe 18, the control end of solenoid operated directional valve 16 connects the output terminal of control device, and the work of solenoid operated directional valve 16 is controlled by control device.The piston rod of cylinder 15 is connected with the control end of pneumatic quadrant valve 19, and the keying of pneumatic quadrant valve 19 is by the flexible realization of piston rod.When pneumatic quadrant valve 19 needed action, the conducting state of control device control solenoid operated directional valve 16 was moved with control cylinder 15, and then made the piston rod of cylinder 15 drive pneumatic quadrant valve 19 actions, realized gathering the blowing of 12 feed openings that struggle against.
Also be provided with source of the gas three linked piece 17 on the above-mentioned gas source pipe 18, source of the gas three linked piece 17 is made up of air reducing valve, strainer, oil sprayer, with crossing the filtration source of the gas, lubricated solenoid operated directional valve 16 and cylinder 15 are for the normal operation of solenoid operated directional valve 16 and cylinder 15 provides reliable assurance.
In the present embodiment, gathering bucket 12 useful volume is 12.5m
3, mouthful square length of side of gathering materials is of a size of 4000mm * 4000mm, and the feed opening square length of side is of a size of 400mm * 400mm, and total height is 1600mm, and gathering the gross weight that bucket 12 fills it up with after the sintering back powder is 28.5 tons.Gathering bucket 12 selects for use the Q345 plate to be made.The pressure of source of the gas is 0.75Mpa, and the cylinder diameter of cylinder 15 is 100mm, and the travel of piston of cylinder 15 is 200mm, and running length is less than the feed opening size that gathers bucket 12.
The material level that adds that gathers bucket 12 arranges guardrail.Gather bucket 12 tops flue dust collecting bucket 13 is set, flue dust collecting bucket 13 connects cleaning shaft 14, and cleaning shaft 14 is communicated with the final dusting house steward of subsidiary factory.Set up an adjustable DN300mm butterfly valve on the cleaning shaft 14, open in use, close when not using, reach the rational and efficient use of dust removal installation.
In the present embodiment, guardrail selects for use the round steel of Ф 45mm to make, and flue dust collecting bucket 13 sectional dimensions are 4000mm * 4000mm, and cleaning shaft 14 diameters are Ф 325mm, and length is 35 meters.
Gather 12 lower edges that gather materials mouth of struggling against and be evenly equipped with three or three above point of suppon, the point of suppon place arranges LOAD CELLS 11, the signal end of LOAD CELLS 11 connects the input terminus of control device, and bucket 12 actual weights that gather that are used for recording pass to control device in real time.Demonstration gathers the gross weight W2 of bucket 12 after filling gathering bucket 12 gross weight W1 and discharging a certain amount of sintering back powder of sintering back powder on the control device, and calculates the weight W of the sintering back powder in the adding hot metal ladle 1 according to the difference of W1 and W2.Gather that bucket 12 lower edge is uniform to arrange three or three above LOAD CELLS 11, total carrying of all LOAD CELLS 11 approaches the gross weight that gathers after bucket 12 is filled the sintering back powder, can guarantee the accuracy of weighing.
In the present embodiment, LOAD CELLS 11 is provided with 3, each LOAD CELLS 11 be carried as 10 tons.
In the present embodiment, bucket type belt 10 length overalls are 34 meters, and width is 500mm, and the angle that raises up is 31 ° 44 ' 9 ".Cylinder 9 diameters are 500mm, and bucket type belt 10 zygomorphy arrange the upright partially wheel of 4 retainings, and the nominal diameter of screw rod is M30, and length is 500mm, and drive-motor power is 3.5kw, and the belt support is made of the 12# channel-section steel.
In the present embodiment, to equipment making transform total expenses add up to 1.5 ten thousand surplus yuan, wherein comprise artificial and materials cost.Carry out Economic and Efficiency Analysis as can be seen with regard to the effect of this transformation below: according to the throughput of the present slab of two steel-making, on average produce 100,000 tons of qualified steel billets per month.After the present invention used, iron and steel stock consumption was reduced to present 1049kg/T by original 1063Kg/T.By 2000 yuan of calculating of iron and steel stock per ton, a month benefit is: 100000*(1063-1049)/and 1000*2000-10000=2790000 unit.Increase benefit in year and be 2790000*12=33480000 unit.
When the present invention works, control device is at first according to the position of hot metal ladle and blast furnace, so that can fully be fused to principle with molten iron from the sintering back powder of guide duct 3 outlet outputs, regulate the position of guide duct 3 outlets by wheelwork, make the position of guide duct 3 outlets and hot metal ladle 1 to advance the molten iron mouth corresponding.The information measured according to LOAD CELLS 11 again of control device is calculated the gravimetric value W of the sintering back powder of carrying in the hot metal ladle 1 in real time then, and according to the running condition of this gravimetric value W and each parts, the aperture of regulating pneumatic quadrant valve 19 by pneumatics, and then control gathers the blanking amount of bucket 12; , add-on and the adding speed of sintering back powder amount are controlled with final realization also by regulating the speed of travel of drive-motor control bucket type belt 10 with timed unit.
Claims (9)
1. be used for directly adding to hot metal ladle the device of sintering back powder, it is characterized in that: comprise with the hot metal ladle (1) of the molten iron of blast furnace outlet (2) corresponding placements and the taper that holds the sintering back powder and gather bucket (12), the described feed opening that gathers bucket (12) be provided with by the pneumatics driving, for controlling the pneumatic quadrant valve (19) that the sintering back powder is discharged; The below that correspondence gathers the feed opening of bucket (12) is provided be used to the ramped shaped bucket type belt (10) of accepting and transmit the sintering back powder, the opening for feed of described bucket type belt (10) is corresponding with the feed opening that gathers bucket (12), bucket type belt (10) raise up the end the discharge port place be provided with blanking collection bucket (8), the guide duct (3) that the tremie pipe bottom fixedly connected guiding sintering back powder of blanking collection bucket (8) flows to, the outlet of described guide duct (3) are positioned at hot metal ladle (1) top; The top of described blanking collection bucket (8) tremie pipe is provided with for the wheelwork of regulating guide duct (3) position; Describedly gather lower edge that bucket (12) gathers materials mouthful and be evenly equipped with and be used for the LOAD CELLS (11) that weighing gathers bucket (12) gross weight more than three or three;
The signal end of described LOAD CELLS (11) is connected with control device, and the output terminal of control device is connected with the control end of pneumatics, wheelwork and driving bucket type belt (10) respectively.
2. according to claim 1 for the device that directly adds the sintering back powder to hot metal ladle, it is characterized in that: described wheelwork comprises the worm gear (7) fixedly connected with blanking collection bucket (8) tremie pipe top, the worm screw (6) that is meshed with worm gear (7) and drives worm screw (6) motor rotating that the input terminus of motor connects the output terminal of control device.
3. according to claim 2 for the device that directly adds the sintering back powder to hot metal ladle, it is characterized in that: be provided with below described blanking collection bucket (8) tremie pipe for the back up pad (20) that supports blanking collection bucket (8), back up pad (20) is provided with bearing housing (21), set gradually the thrust ball bearing (4) and the deep groove ball bearing (5) that make blanking collection bucket (8) rotation in the bearing housing (21) from top to bottom, also be provided with axle sleeve (22) between thrust ball bearing (4) and the deep groove ball bearing (5), the end cap (23) that bearing housing (21) upper end is provided for sealing.
4. according to claim 1 for the device that directly adds the sintering back powder to hot metal ladle, it is characterized in that: described pneumatics comprises the cylinder (15) that is communicated with gas source pipe (18) and is arranged on gas source pipe (18) goes up the solenoid operated directional valve (16) that is used for control cylinder (15) action, the control end of described solenoid operated directional valve (16) connects the output terminal of control device, and the piston rod of cylinder (15) is connected with the control end of pneumatic quadrant valve (19).
5. according to claim 4 for the device that directly adds the sintering back powder to hot metal ladle, it is characterized in that: also be provided with the source of the gas three linked piece of being formed by air reducing valve, strainer, oil sprayer (17) on the described gas source pipe (18).
6. according to claim 1 for the device that directly adds the sintering back powder to hot metal ladle, it is characterized in that: described bucket type belt (10) zygomorphy is provided with the upright partially wheel of retaining.
7. according to claim 1 for the device that directly adds the sintering back powder to hot metal ladle, it is characterized in that: the described material level that adds that gathers bucket (12) is provided with guardrail.
8. according to claim 7 for the device that directly adds the sintering back powder to hot metal ladle, it is characterized in that: described top of gathering bucket (12) arranges flue dust collecting bucket (13).
9. according to claim 7 for the device that directly adds the sintering back powder to hot metal ladle, it is characterized in that: the described cross section that gathers bucket (12) is square, and mouthful foursquare length of side of gathering materials is greater than the foursquare length of side of feed opening.
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| CN201310115570.0A CN103194561B (en) | 2013-04-03 | 2013-04-03 | Device for directly adding sintering returned dust into ladle |
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| CN201310115570.0A CN103194561B (en) | 2013-04-03 | 2013-04-03 | Device for directly adding sintering returned dust into ladle |
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| CN103194561B CN103194561B (en) | 2015-04-29 |
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Cited By (6)
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| CN103449148A (en) * | 2013-07-29 | 2013-12-18 | 杨林江 | Material continuous dynamic metering device |
| CN103667579A (en) * | 2013-12-20 | 2014-03-26 | 德龙钢铁有限公司 | Iron adding process-based medium-high silicon molten iron desilication method |
| CN106628373A (en) * | 2016-10-31 | 2017-05-10 | 南宁市美嘉农饲料有限责任公司 | Feed sub-packaging device |
| CN115159164A (en) * | 2022-06-23 | 2022-10-11 | 上海康恒环境股份有限公司 | Slaked lime conveying system and control method thereof |
| CN116253168A (en) * | 2023-05-15 | 2023-06-13 | 雅安建寅建材(集团)有限公司 | Anti-collision charging car for transporting metal raw materials |
| CN117585327A (en) * | 2024-01-18 | 2024-02-23 | 秦皇岛昌德冶金科技有限公司 | Scrap steel weighing and discharging device for steel smelting |
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| CN103667579A (en) * | 2013-12-20 | 2014-03-26 | 德龙钢铁有限公司 | Iron adding process-based medium-high silicon molten iron desilication method |
| CN106628373A (en) * | 2016-10-31 | 2017-05-10 | 南宁市美嘉农饲料有限责任公司 | Feed sub-packaging device |
| CN115159164A (en) * | 2022-06-23 | 2022-10-11 | 上海康恒环境股份有限公司 | Slaked lime conveying system and control method thereof |
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| CN116253168B (en) * | 2023-05-15 | 2023-11-24 | 雅安建寅建材(集团)有限公司 | Anti-collision charging car for transporting metal raw materials |
| CN117585327A (en) * | 2024-01-18 | 2024-02-23 | 秦皇岛昌德冶金科技有限公司 | Scrap steel weighing and discharging device for steel smelting |
| CN117585327B (en) * | 2024-01-18 | 2024-04-09 | 秦皇岛昌德冶金科技有限公司 | Scrap steel weighing and discharging device for steel smelting |
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Effective date of registration: 20221110 Address after: 056300 east of Chongyi village, Shangtuan urban and rural areas, Wu'an city, Handan City, Hebei Province Patentee after: Jinan Iron and Steel Group Co.,Ltd. Address before: 056300, Hebei, Handan province Wuan City South Ring Road South Patentee before: HEBEI WENFENG IRON AND STEEL Co.,Ltd. |
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