CN115196867B - Cotton collection device of melting blast furnace slag system sediment - Google Patents
Cotton collection device of melting blast furnace slag system sediment Download PDFInfo
- Publication number
- CN115196867B CN115196867B CN202210332215.8A CN202210332215A CN115196867B CN 115196867 B CN115196867 B CN 115196867B CN 202210332215 A CN202210332215 A CN 202210332215A CN 115196867 B CN115196867 B CN 115196867B
- Authority
- CN
- China
- Prior art keywords
- slag
- cotton
- motor
- collecting
- blast furnace
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 239000002893 slag Substances 0.000 title claims abstract description 374
- 229920000742 Cotton Polymers 0.000 title claims abstract description 145
- 238000002844 melting Methods 0.000 title claims abstract description 8
- 230000008018 melting Effects 0.000 title claims abstract description 8
- 239000013049 sediment Substances 0.000 title claims description 9
- 238000003825 pressing Methods 0.000 claims abstract description 19
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 8
- 239000003546 flue gas Substances 0.000 claims abstract description 8
- 239000007788 liquid Substances 0.000 claims description 52
- 239000011490 mineral wool Substances 0.000 claims description 35
- 230000005540 biological transmission Effects 0.000 claims description 31
- 238000005520 cutting process Methods 0.000 claims description 29
- 230000033001 locomotion Effects 0.000 claims description 24
- 229910000831 Steel Inorganic materials 0.000 claims description 21
- 239000010959 steel Substances 0.000 claims description 21
- 238000004519 manufacturing process Methods 0.000 claims description 18
- 239000000463 material Substances 0.000 claims description 9
- 238000000034 method Methods 0.000 abstract description 47
- 230000008569 process Effects 0.000 abstract description 27
- 239000002918 waste heat Substances 0.000 abstract description 12
- 238000010408 sweeping Methods 0.000 abstract description 8
- 230000000694 effects Effects 0.000 abstract description 7
- 230000009286 beneficial effect Effects 0.000 abstract description 4
- 230000005611 electricity Effects 0.000 abstract description 4
- 239000005431 greenhouse gas Substances 0.000 abstract description 4
- 238000003756 stirring Methods 0.000 abstract description 3
- 238000005054 agglomeration Methods 0.000 abstract description 2
- 230000002776 aggregation Effects 0.000 abstract description 2
- 239000000835 fiber Substances 0.000 description 16
- 230000001276 controlling effect Effects 0.000 description 14
- 230000001105 regulatory effect Effects 0.000 description 11
- 239000000779 smoke Substances 0.000 description 10
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 8
- 230000009471 action Effects 0.000 description 7
- 230000008878 coupling Effects 0.000 description 7
- 238000010168 coupling process Methods 0.000 description 7
- 238000005859 coupling reaction Methods 0.000 description 7
- 239000003245 coal Substances 0.000 description 6
- 238000007664 blowing Methods 0.000 description 5
- 230000007547 defect Effects 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 5
- 239000007789 gas Substances 0.000 description 5
- 230000005484 gravity Effects 0.000 description 5
- 238000009434 installation Methods 0.000 description 4
- 229910052742 iron Inorganic materials 0.000 description 4
- 238000002360 preparation method Methods 0.000 description 4
- 238000011084 recovery Methods 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 238000001816 cooling Methods 0.000 description 3
- 239000000155 melt Substances 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- 238000010079 rubber tapping Methods 0.000 description 3
- 229910000805 Pig iron Inorganic materials 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000000703 high-speed centrifugation Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000010791 quenching Methods 0.000 description 2
- 230000000171 quenching effect Effects 0.000 description 2
- 238000007711 solidification Methods 0.000 description 2
- 230000008023 solidification Effects 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 238000003723 Smelting Methods 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 238000005119 centrifugation Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 239000010779 crude oil Substances 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 238000005469 granulation Methods 0.000 description 1
- 230000003179 granulation Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000012784 inorganic fiber Substances 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000004544 sputter deposition Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B37/00—Manufacture or treatment of flakes, fibres, or filaments from softened glass, minerals, or slags
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G47/00—Article or material-handling devices associated with conveyors; Methods employing such devices
- B65G47/74—Feeding, transfer, or discharging devices of particular kinds or types
- B65G47/82—Rotary or reciprocating members for direct action on articles or materials, e.g. pushers, rakes, shovels
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C13/00—Fibre or filament compositions
- C03C13/06—Mineral fibres, e.g. slag wool, mineral wool, rock wool
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B3/00—General features in the manufacture of pig-iron
- C21B3/04—Recovery of by-products, e.g. slag
- C21B3/06—Treatment of liquid slag
-
- 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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
Abstract
The invention discloses a slag cotton collecting device for melting blast furnace slag, and belongs to the technical field of blast furnace slag utilization. The device comprises a barrel, a feeding unit, a rotary crushing unit, a slag pressing collecting unit, a slag raking forming unit and a slag pushing conveying unit, wherein molten blast furnace slag is cut into fibrous slag cotton through the rotary crushing unit, and then the fibrous slag cotton enters the slag raking forming unit downwards through sweeping, stirring and collecting in the slag pressing collecting unit, the dispersed slag cotton is further raked and agglomerated, and finally the slag cotton is subjected to cotton collecting output through the slag pushing conveying unit, so that the device has a good effect of collecting the slag cotton, is more beneficial to the shrinkage and agglomeration conveying of the slag cotton, and high-temperature air generated in the slag making and cotton collecting process enters a waste heat boiler through a flue gas outlet to generate electricity, so that heat is recycled, energy cost is effectively reduced, and emission of greenhouse gases is reduced, so that the comprehensive application of the blast furnace slag fiberizing process is realized.
Description
Technical Field
The invention belongs to the technical field of blast furnace slag utilization, and particularly relates to a slag cotton collecting device for melting blast furnace slag.
Background
With the continuous progress of technology, the demand for energy is increasing, and people are facing energy crisis, and coal, oil and natural gas as main energy are exhausted. Currently, with the rapid development of the metallurgical industry, blast furnace gas and metallurgical slag are utilized, and the blast furnace slag is a huge amount of byproducts generated in the metallurgical industry, so that the treatment and the reuse of the blast furnace slag and the waste heat recovery are particularly important. The current tapping temperature of blast furnace slag is 1350-1550 ℃, the enthalpy is 1.8MJ/kg, and 1t blast furnace slag contains sensible heat 1675MJ, which is about equivalentThe heat released during the combustion of 57kg of standard coal is about 8.88 hundred million tons of pig iron and about 2.664 hundred tons of blast furnace slag in the iron and steel industry in China in 2020, and the calorific value of the heat is equivalent to 0.1332 hundred tons of standard coal, so the heat has great significance for treating and reutilizing the blast furnace slag generated in the metallurgical industry. At present, blast furnace slag is mostly treated by adopting a water quenching method, high-temperature sensible heat white discharge of the blast furnace slag is difficult to recover, a large amount of water is consumed, the water quenching method pollutes the environment, and H is generated 2 S、SO 2 And the like, so that the development of a treatment process for researching the blast furnace slag dry method becomes a hot spot for researching domestic and foreign iron and steel enterprises.
The research shows that a large amount of slag cotton can be produced by high-speed centrifugal crushing of blast furnace slag, and the slag cotton is an artificial inorganic fiber, has the excellent properties of light weight, small heat conductivity, strong heat resistance, incombustibility and the like, and has wider application field. According to the current investigation statistics, the heat preservation device is used for preserving heat of one ton of slag cotton used in a building, so that at least one ton of crude oil can be saved. The hot molten blast furnace slag generated in the steel smelting process is centrifugally spun into cotton, so that the problem of high energy consumption is hopefully solved.
At present, according to a fiber forming process, a melted mineral wool melt can be further manufactured into a mineral wool finished product through fiber forming, and the mineral wool manufactured by utilizing blast furnace slag generally needs to be granulated firstly, for example, chinese patent CN114042514A discloses a technology for granulating liquid blast furnace slag by utilizing a rotary cutting unit, wherein the technology of the manufactured fiber forming process is as follows: (1) The centrifugal method includes disc type and multi-roller type, the melt flows into the first roller of the disc or multi-roller centrifugal machine rotating at high speed, the rotation speed is gradually accelerated from the 1 st roller to the 4 th roller, and the rotation speed can reach 10000 r/min. Due to the gradual acceleration of the centrifugal rollers, the slag is thrown into slag cotton fibers by the flow under the action of centrifugal force. Because the fiberizing process is completed in a moment, only 65-80% of the slag is converted into mineral wool fibers, and the rest slag is not converted into fibers and becomes useless slag balls. The air ring is arranged behind the centrifugal roller, mineral wool fibers blown out by the air ring are collected in the cotton collecting chamber, the bottom of the cotton collecting chamber is a movable conveying net belt, an air suction chamber is arranged below the net belt, and mineral wool fibers are adsorbed on the surface of the net belt by means of negative pressure formed by the air suction chamber and then conveyed to the next working procedure. Cotton collection chambers generally have two forms, a flat type and a pendulum type, the latter being more advanced. The product has long fiber, low impurity content and low power consumption. The defects are that the multi-roller equipment is complex, the operation technical requirement is high, and the felt laying uniformity is poor, such as Chinese patent CN103820588A, CN111041135A and CN111074019A. (2) The centrifugal blowing process is used as the main process of drawing mineral cotton into fiber, and has high speed nozzle based on centrifugal equipment, and after the melt is dispersed by centrifugal force, the melt is drawn into fiber by high speed airflow or water flow sprayed from the nozzle before solidification, and has high yield, fine and pure fiber and capacity of producing high quality fiber product. (3) In the 80 s, the production process of the advanced pendulum method is developed internationally on the basis of improving the fusion and fiber forming mechanism and replacing the settlement gathering technology by the triangle mesh belt gathering and pendulum felt laying. The high-quality slag cotton can be produced by the advanced pendulum method technology, the fibers are more slender, the content of slag balls is less, the composite board production process is simplified, and the composite board production cost is reduced. Meanwhile, the method also comprises a steam blowing method, an air slag blowing method, an air flow blowing method and other processes proposed by the Soviet Union, but the methods are applied less currently.
Disclosure of Invention
1. Problems to be solved
Aiming at the problem that slag cotton is difficult to collect by the existing blast furnace slag centrifugation method, the invention provides a slag cotton collecting device for preparing slag cotton from molten blast furnace slag, which has good slag cotton collecting effect.
2. Technical proposal
In order to solve the problems, the technical scheme adopted by the invention is as follows:
the invention relates to a slag cotton collecting device for melting blast furnace slag, which comprises the following components:
slag cotton production unit: the slag cotton production unit comprises a cylinder body, wherein the top of the cylinder body is provided with at least one liquid slag feeding hole, the bottom of the side surface of the cylinder body is provided with a slag hole, the lower part of the side surface of the cylinder body is provided with a flue gas outlet, the upper part of the side surface of the cylinder body is provided with an air inlet, and a cavity for collecting slag cotton produced by melting blast furnace slag is formed inside the cylinder body;
the feeding unit comprises a liquid slag runner, and the front end of the liquid slag runner is matched with the liquid slag feeding port;
the rotary crushing unit comprises at least one power output component A and rotary cutting blades connected with the power output component A through a rotary transmission shaft A, and the rotary cutting blades extend into the cavity and are positioned below the liquid slag feeding port;
further comprises: the slag pressing collecting unit is positioned below the rotary crushing unit and used for collecting slag cotton and comprises a power output component C and a rotary cross rod connected with the power output component C through a rotary transmission shaft C, wherein the rotary cross rod is connected with the grid through a rotary ring and stretches into the lower part of the rotary cutting blade;
The harrow sediment forming unit is positioned below the pressed sediment collecting unit and used for forming the dreg cotton and comprises a power output component D and a gear rack lifting device connected with the power output component D through a rotary transmission shaft D, the gear rack lifting device is fixedly connected with a telescopic strut, a harrow piece is arranged at the front end of the telescopic strut and extends upwards below the grid, the bottom surface of the harrow piece is connected with the telescopic strut through a supporting framework, a sliding sleeve is sleeved on the telescopic strut, the harrow piece is hinged with the supporting framework and the telescopic strut through the sliding sleeve, and the reciprocating motion of the gear rack lifting device is realized by controlling the power output component D;
the slag pushing and conveying unit is positioned below the slag raking and forming unit and used for conveying slag cotton, the slag raking and forming unit comprises a power output component E and a slag pushing plate connected with the power output component E through a pushing rod, in actual operation, the slag pushing plate is formed by two steel plates in a spacing mode, the pushing rod and the slag pushing plate are fixedly connected in a crossed mode so as to avoid the telescopic sleeve when moving, the power output component E drives the pushing rod to push the slag pushing plate to reciprocate on the base and used for pushing the slag cotton to a slag hole, and the tail end of the slag hole is connected with a conveying belt.
The power output component A comprises a motor A and a frequency converter A for controlling the motor A, the motor A is a three-phase alternating-current high-speed motor, the frequency converter A can carry out variable speed control on the rotating speed of the motor A by 0-2800r/min, the actual operating rotating speed of equipment is n1, and the value range of n1 is 1800-2800r/min.
The power output component C comprises a motor C and a frequency converter C for controlling the motor C, the motor C is a three-phase alternating current motor, the highest rotating speed of the rotary transmission shaft C is 5r/min, the actual running rotating speed of the rotary transmission shaft C is n3, and the value range of n3 is 0-5r/min.
The power output component D comprises a motor D and a frequency converter D for controlling the motor D, the motor D is a three-phase alternating current motor, the frequency converter D regulates and controls the motor D to control the reciprocating motion of the gear rack lifting equipment, the actual running speed of the rack is n4, and the value range of n4 is 50-65mm/s.
The power output component E comprises a motor E and a frequency converter E for controlling the motor E, the motor E is a three-phase alternating current motor, and the pushing rod is controlled to do reciprocating push-pull motion by regulating and controlling the motor E, so that the actual running speed of the slag pushing plate is n5, and the value range of n5 is 15-25mm/s.
The rotary cutting blades are vertical blades, the length of each blade is L1, the value range of the length L1 of each blade is 250-350mm, the interval angle of each blade is alpha 1, the value range of the alpha 1 is 20-40 degrees, the number of the blades is N1, and the value range of the N1 is 10-14.
The grid bars are vertical cylindrical steel bars, the unit lengths of the grid bars from the wall surface side of the cylinder body to the direction of the rotary transmission shaft C are the same, the length of the grid bars is L2, the value range of L2 is 500-2000mm, the number of the grid bars from one side of the rotary center along the direction of the rotary cross bar is N2, the value range of N2 is 6-8, the interval between the grid bars is D2, the value range of D2 is 100-200mm, N3 rotary cross bars are uniformly arranged around the circumferential direction of the mounting socket, the number of the grid bars connected to each rotary cross bar is the same and uniformly distributed around the rotary center, and the value range of N3 is 1-4.
The swinging angle of the grid bars along with the movement of the rotary transmission shaft C is alpha 2 relative to the vertical direction, and the value range of the alpha 2 is 0-10 degrees.
The rotary cross rod is buckled with the swivel through a double ring, and the swivel is connected with the grid through a double ring.
The harrow pieces are evenly distributed around the top end of the telescopic supporting rod, the number of the harrow pieces is N4, the value range of the N4 is 8-12, the length of each harrow piece is L3, and the value range of the L3 is 500-1200 mm.
The liquid slag feeding port has an opening width D1, the value range of D1 is 150-200mm, the included angle between the opening direction of the liquid slag flow passage and the horizontal direction is beta, and the value range of beta is 20-45 degrees.
The cylinder body is a high-temperature resistant cylinder, the inclination direction angle of the cylinder wall is alpha 3, the vertical direction angle is 0 degrees, the outward inclination is positive angle, the inward inclination is negative angle, and the value range of alpha 3 is-30 degrees to 30 degrees.
The harrow piece and the slag pushing plate are made of wear-resistant steel plates.
The bottom of the cavity is a flexible steel wire brush base.
More than 80% of sensible heat can be recovered when the molten blast furnace slag is directly used for preparing cotton, and the device is an economically feasible dry treatment process for iron and steel enterprises, so that the device is mainly used for researching the preparation of the slag cotton in the aspect of design, and meanwhile, the waste heat is collected. The device is designed under the background of the centrifugal method of the blast furnace slag to form fibers, and solves the problems of mechanized collection and transportation of slag cotton through a series of device design transformation aiming at the defects of high operation technical requirements, poor felt paving uniformity and the like of the method, and meanwhile, the waste heat resources of the blast furnace slag are fully utilized, so that the comprehensive application of the blast furnace slag to the preparation of the slag cotton is realized.
The device is a treatment process for forming fibers and collecting slag cotton by using molten blast furnace slag through a high-speed centrifugation method, the molten blast furnace slag is cut into fibrous slag cotton through the high-speed centrifugation, and then the fibrous slag cotton enters a slag raking forming unit downwards through a plurality of processes such as sweeping, stirring, collecting and the like in a slag pressing collecting unit, the dispersed slag cotton is further raked and agglomerated, so that the dispersed slag cotton is more convenient to collect and process, and finally the dispersed slag cotton is collected and output through a slag pushing device of a slag pushing conveying unit. Through the integrated process of collecting and processing slag cotton, the fibrous slag cotton is collected by adopting the slag pressing collecting unit and the slag raking forming unit in the device, the defect that the traditional slag cotton preparation device is difficult to collect is avoided, the device is integrated, the treatment process is simpler, the installation investment of equipment is reduced, the production cost is reduced, the control and the later maintenance of the device are convenient, and the consumption of energy sources is also reduced in the process of slag collection treatment of the device.
For unstable blast furnace slag discharge amount in the metallurgical production process, the rotating speed of the motor A is regulated by the frequency converter A in the rotary crushing unit so as to be matched with actual production, and the regulation and control on the mass production of the slag particles and slag wires which are uniform and continuous are realized; the rotation speed of the rotary transmission shaft C can be regulated by regulating the rotation speed of the motor C in the slag pressing collecting unit so as to be matched with discontinuous slag cotton fibers collected in the rotary crushing unit; in the slag raking and forming unit, the rotating speed of the motor D can be adjusted through the frequency converter D so as to cooperatively collect slag cotton and enable the slag cotton to be formed in a shrinkage mode, and the controllability of the device is improved; in the slag pushing and conveying unit, the rotating speed of the motor E can be adjusted through the frequency converter E so as to match the reciprocating motion speed of the slag pushing plate, thereby being beneficial to matching with the control of the output time of the agglomerated slag cotton, saving energy and improving the continuity of the delivery of the slag cotton.
According to the slag cotton collecting device for producing slag cotton from molten blast furnace slag, which is disclosed by the invention, the molten blast furnace slag is adopted as a raw material for producing slag cotton, the falling thickness of liquid slag is controlled by regulating and controlling the opening width of the liquid slag feeding port, and then the slag cotton is matched with the rotating speed and the number of blades of the rotary cutting blades to form slag wires with good granulating degree to be dispersed in the device; and the inclination angles of the walls of the high-temperature resistant cylinder bodies are different, so that the high-temperature resistant cylinder can be suitable for collecting cotton output of slag cotton under different working condition scenes.
The flue gas outlet is formed in the wall of the left lower part of the grid, and high-temperature gas generated in the slagging collecting process enters the boiler through the flue gas outlet to generate electricity and the like, so that heat is reused, the energy cost is effectively reduced, and the emission of greenhouse gas is also reduced. The current tapping temperature of blast furnace slag is 1350-1550 ℃, the enthalpy is 1.8MJ/kg, and the sensible heat of each ton of slag is equivalent to the calorific value of 60kg standard coal equivalent. The iron and steel industry in China generates about 8.88 hundred million tons of pig iron and 2.664 hundred million tons of blast furnace slag, the calorific value of the blast furnace slag is equivalent to 0.1332 hundred million tons of standard coal equivalent, and the waste heat can be recycled, so that the current energy consumption can be greatly saved, and the blast furnace slag has extremely high economic value. The upper right side of the high temperature resistant cylinder body is provided with an air inlet matched with a slag outlet, so that the air quantity is enough to perform waste heat recovery, a draught fan is arranged at a smoke outlet, negative pressure is formed in the device, smoke is discharged more efficiently, the temperature of the smoke outlet reaches 300-500 ℃, waste heat is fully utilized, and the safety of a working environment is ensured. The designed grid bar has a uniform length, and the grid bar passes through the swivel through holes to be connected, so that the good effect of sweeping slag and collecting cotton is ensured, and meanwhile, the grid bar can not be driven onto the cylinder wall due to the slower running speed, so that the problem that the slag cotton is adhered to the wall surface of equipment to influence the running of the equipment is solved, and the problem that the slag silk is hard to peel off due to the fact that the cooling speed is too high is solved, and the processing process of materials is well integrated.
According to the slag cotton collecting device for preparing slag cotton by using the blast furnace thermal state slag, the swept discontinuous slag cotton is collected by using the slag forming unit with a mechanical structure, compared with a winnowing method and a centrifugal blowing method, the collecting area of the whole device is effectively increased, the collecting efficiency of slag wires is improved, the slag wires are well contracted into clusters, the slag cotton can be better collected, the slower controllable running speed is better than that of other methods, the energy sources are saved, the discontinuous slag cotton collected by the slag collecting device is subjected to the raking action by the opening and closing telescopic mechanical structure of the harrow blades, the defect that the slag cotton is inconvenient to cluster due to uneven distribution is well solved, and the acting force applied to the telescopic strut is evenly dispersed again through the center of the telescopic strut, so that the continuous strength is good, the equipment is not easy to damage, the equipment practicability is stronger, and the clustered slag cotton can be better stored into the slag pushing conveying unit. The agglomerated slag cotton is transported to the slag pushing and conveying unit, when the slag pushing plate pushes the slag cotton, the slag pushing and conveying unit can be prevented from being damaged when the slag cotton passes through the flexible steel wire brush base, so that the service life of the equipment is prolonged, and the integrated structure of the slag pushing and conveying unit achieves the stable operation of the machine body of the equipment and ensures efficient cotton collecting output.
3. Advantageous effects
Compared with the prior art, the invention has the beneficial effects that:
(1) According to the slag cotton collecting device for producing slag from molten blast furnace slag, disclosed by the invention, slag sweeping and collecting are realized through the grid bars in the slag pressing collecting unit, wherein the grid bars are connected with the swivel through the double-ring buckles, so that the swinging angle of the grid bars during rotary sweeping is not limited, slag cotton at different positions is collected, the slag cotton collecting quantity is improved, meanwhile, the grid bars cannot be beaten onto the cylinder wall due to the slower running speed, the problem that the operation of equipment is affected due to the fact that the slag cotton is adhered to the wall of equipment is solved, and the problem that slag silk solidification wall surface is difficult to peel due to the fact that the cooling speed is too high is solved;
(2) The device cuts the molten blast furnace slag into fibrous slag cotton through the rotary cutting blades, and then sweeps, stirs and collects the fibrous slag cotton in the slag pressing collecting unit to enable the fibrous slag cotton to enter the slag raking forming unit downwards, further raking slag and agglomerating the dispersed slag cotton, and finally collecting and outputting the slag cotton through the slag pushing device of the slag pushing conveying unit, so that the agglomerating output of the slag cotton is facilitated;
(3) According to the slag cotton collecting device for the molten blast furnace slag, disclosed by the invention, the discontinuous slag cotton which is swept down is collected by using the slag raking forming unit with a mechanical structure, so that the collecting area of the whole device is effectively increased, the collecting efficiency of slag wires is improved, and the slag wires are well contracted into clusters; the discontinuous slag cotton is raked and pulled by utilizing the opening and closing telescopic mechanical structure of the harrow piece, so that the slag cotton is uniformly distributed, and the slag cotton is clustered;
(4) According to the slag cotton collecting device for the molten blast furnace slag, the agglomerated slag cotton is conveyed into the slag pushing conveying unit, when the slag pushing plate pushes the slag cotton through the flexible steel wire brush base, the slag pushing conveying unit can be prevented from being damaged so as to achieve the effect of prolonging the service life of equipment, and the integrated structure of the slag pushing conveying unit achieves the stable operation of the equipment body and ensures high-efficiency cotton collecting output;
(5) According to the collecting device for the slag cotton of the molten blast furnace slag, disclosed by the invention, the falling thickness of the liquid slag is controlled by regulating and controlling the opening width of the liquid slag feeding port, and then the liquid slag is matched with the rotating speed and the number of the rotating cutting blades, so that the granulating of the molten blast furnace slag is facilitated;
(6) According to the slag-making cotton collecting device for the molten blast furnace slag, the flue gas outlet is formed in the left lower cylinder wall of the grid, and high-temperature gas generated in the slag-making collecting process is introduced into the boiler through the flue gas outlet to generate electricity, so that heat is reused, the energy cost is effectively reduced, and the emission of greenhouse gas is reduced; the upper right side of the high temperature resistant cylinder body is provided with an air inlet matched with a slag outlet, so that the air quantity is enough to carry out waste heat recovery, and a draught fan is arranged at a smoke outlet, so that negative pressure is formed in the device, and smoke is discharged more efficiently.
Drawings
The technical solution of the present invention will be described in further detail below with reference to the accompanying drawings and examples, but it should be understood that these drawings are designed for the purpose of illustration only and thus are not limiting the scope of the present invention. Moreover, unless specifically indicated otherwise, the drawings are intended to conceptually illustrate the structural configurations described herein and are not necessarily drawn to scale.
FIG. 1 is a schematic view of a slag cotton collecting device for melting blast furnace slag;
in the figure:
100. a cylinder; 110. a liquid slag feeding port; 120. a slag outlet; 130. a flue gas outlet; 140. an air inlet;
200. a feeding unit; 210. a liquid slag runner;
300. a rotary crushing unit; 310. a motor A; 311. a frequency converter A; 312. a coupling A; 313. rotating the transmission shaft A; 320. a motor B; 321. a frequency converter B; 330. rotating the cutting blade;
400. a pressed slag collecting unit; 410. a motor C; 411. a frequency converter C; 412. a coupling C; 413. rotating the transmission shaft C; 420. rotating the cross bar; 430. a swivel; 440. a grid bar; 450. installing a socket;
500. a slag raking and forming unit; 510. a motor D; 511. a frequency converter D; 512. a coupling D;513 rotating drive shaft D; 520. a rack and pinion lifting device; 530. a telescopic strut; 540. a sliding sleeve; 550. a harrow piece; 560. a support skeleton; 570. a telescoping sleeve;
600. A slag pushing and conveying unit; 610. a motor E; 611. a frequency converter E; 612. a coupling E; 620. a pushing rod; 630. a slag pushing plate; 640. a material conveying conveyor belt; 650. a flexible wire brush base;
700. slag cotton.
Detailed Description
The following detailed description of exemplary embodiments of the invention refers to the accompanying drawings, which form a part hereof, and in which are shown by way of illustration exemplary embodiments in which the invention may be practiced. While these exemplary embodiments are described in sufficient detail to enable those skilled in the art to practice the invention, it is to be understood that other embodiments may be realized and that various changes to the invention may be made without departing from the spirit and scope of the invention. The following more detailed description of the embodiments of the invention is not intended to limit the scope of the invention, as claimed, but is merely illustrative and not limiting of the invention's features and characteristics in order to set forth the best mode of carrying out the invention and to sufficiently enable those skilled in the art to practice the invention. Accordingly, the scope of the invention is limited only by the attached claims.
The following detailed description and example embodiments of the invention may be better understood when read in conjunction with the accompanying drawings, in which elements and features of the invention are identified by reference numerals.
Example 1
The invention relates to a method for collecting slag cotton from molten blast furnace slag, which comprises the following steps:
s1, feeding: controlling the temperature of the molten blast furnace slag to 1350-1550 ℃; opening the liquid slag feeding port 110, and flowing the molten blast furnace slag from the liquid slag feeding port 110 through the liquid slag runner 210 onto the rotary cutting blades 330 rotating at a high speed in the rotary crushing unit 300;
s2, throwing wires: under the action of centrifugal force and tangential stress of the rotating cutting blades 330 moving at high speed, the molten blast furnace slag flies out along the edges of the rotating cutting blades 330 and flies onto the wall surface of the cylinder body through centrifugal sputtering; in the process of flying to the wall, the molten blast furnace slag is fully contacted with cold air to generate heat exchange, the temperature of the molten blast furnace slag is rapidly reduced, high-speed cutting rotation is realized through the centrifugal force and the cutting stress of the rotary cutting blades 330, and the molten blast furnace slag in liquid state is thrown into discontinuous slag cotton 700;
s3, sweeping cotton and collecting cotton: for the slag wool 700 adhered on the wall surface and meshed in the cavity in the wire throwing process, the slag wool 700 is driven to be rotationally swept and collected by the slag wool collecting unit 400, and as the produced slag wool 700 is lighter in weight and easy to agglomerate, each grid 440 rotates along with the rotation of the rotary cross rod 420 to make the dispersed slag wool 700 uniformly distributed on the grid 440 or directly swept down, and the slag wool 700 on the grid 440 falls into the slag forming unit 500 through the smooth grid 440 under the action of gravity;
S4, forming harrow cotton: for the non-formed slag cotton 700 falling from the slag pressing collecting unit 400, the telescopic support rod 530 drives the harrow piece 550 to open and close for reciprocating motion by driving the gear rack lifting device 520, wherein the sliding sleeve 540 and the supporting framework 560 drive the harrow piece 550 to move upwards to be closed and move downwards to open, so that the dispersed strip-shaped slag cotton 700 is gathered towards the center to form a bulk slag cotton 700 when moving downwards, and finally the bulk slag cotton falls to the slag pushing conveying unit 600 under the combined action of the dragging force of the harrow piece 550 and the self gravity;
s5, cotton pressing and slag discharging: for the agglomerated slag wool 700 falling into the slag pushing and conveying unit 600, the slag pushing plate 630 is driven to continuously extrude the agglomerated slag wool 700 to the slag hole 120 at a uniform speed, and then the subsequent agglomerated slag wool 700 is packed and put in storage by the material conveying belt 640.
The heat generated in the process of producing the slag wool 700 forms high-temperature gas through the air inlet 140 and the slag hole 120, the smoke outlet 130 is provided with a draught fan to generate negative pressure so that the high-temperature gas enters the waste heat boiler to generate electricity, and the heat is reused, so that the energy cost is effectively reduced, and the emission of greenhouse gases is also reduced.
As shown in fig. 1, a slag wool collecting device for producing slag from molten blast furnace slag of the present embodiment includes a slag wool production unit, a slag wool pressing collecting unit 400, a slag forming unit 500, and a slag conveying unit 600, the slag wool production unit including: a drum 100, a feeding unit 200, and a rotary crushing unit 300.
At least one liquid slag feeding port 110 is formed in the top of the barrel 100, a slag outlet 120 is formed in the bottom of the side surface of the barrel, a smoke outlet 130 is formed below the side surface of the barrel, an air inlet 140 is formed above the side surface of the barrel, and a cavity for collecting slag-making cotton of molten blast furnace slag is formed inside the barrel.
The feeding unit 200 comprises a liquid slag runner 210, the front end of the liquid slag runner 210 is matched with the liquid slag feeding port 110, liquid molten blast furnace slag is fed into the cavity through the liquid slag feeding port 110, the opening width of the liquid slag feeding port 110 is D1, the value of D1 is 150mm, the included angle between the opening direction of the liquid slag runner 210 and the horizontal direction is beta, and the value of beta is 20 degrees.
The liquid molten blast furnace slag falls into the rotary crushing unit 300 from the liquid slag feeding port 110, the rotary crushing unit 300 comprises a motor A310, a frequency converter A311 for controlling the motor A310, a rotary cutting blade 330 connected with the motor A310 through a coupling A312 and a rotary transmission shaft A313, a motor B320, a frequency converter B321 for controlling the motor B320, and a rotary cutting blade 330 connected with the motor B320 through the coupling B and the rotary transmission shaft B, wherein the rotary cutting blade 330 extends into the cavity and is positioned below the liquid slag feeding port 110; the motor A310, the frequency converter A311, the motor B320 and the frequency converter B321 are separately separated from other units through the high-temperature-resistant cylinder 100, the motor A310 and the frequency converter A311 are positioned at the left upper part outside the high-temperature-resistant cylinder 100, and the motor B320 and the frequency converter B321 are positioned at the right upper part outside the high-temperature-resistant cylinder 100, so that the motor A310 and the motor B320 are prevented from being directly contacted with a slag cotton collecting device of molten blast furnace slag, and the operation safety of equipment is improved. Motor a 310 and motor B320 are both three-phase ac high-speed motors with a maximum rotational speed of 2800r/min. The frequency converter A311 can perform variable speed control of 0-2800r/min on the rotating speed of the motor A310, the actual operating rotating speed of the equipment is n1, the n1 value is 1800r/min, the frequency converter B321 can perform variable speed control of 0-2800r/min on the rotating speed of the motor B320, the actual operating rotating speed of the equipment is n2, and the n2 value is 1800r/min. For unstable blast furnace slag discharge amount in the metallurgical production process, the invention adjusts the rotating speed of the motor A310 through the frequency converter A311 and adjusts the rotating speed of the motor B320 through the frequency converter B321 so as to be matched with actual production, thereby realizing the preparation of the slag cotton 700 with uniform continuous slag wires. The rotary cutting blade 330 is a vertical blade, the blade length is L1, the value of L1 is 250mm, the blade interval angle is α1, the value of α1 is 20 °, the number of blades is N1, and the value of N1 is 14. The thickness of the liquid slag falling is controlled by the opening width of the liquid slag feeding port 110, and the liquid slag is matched with the rotating speed and the number of the blades of the rotary cutting blades 330, so that the liquid molten blast furnace slag with good granulating degree is formed, and further heat exchange is facilitated. After the molten blast furnace slag enters the high-temperature resistant cylinder 100, the rotary cutting blades 330 cut and segment the continuous liquid molten blast furnace slag flow, centrifugal crushing is carried out on the molten blast furnace slag through high-speed rotation of the rotary cutting blades 330, the crushed blast furnace slag is thrown out at a high speed, exchanges heat with air, is solidified and is wiredrawn into discontinuous fibrous slag cotton 700, and the fibrous slag cotton 700 is adhered to the wall surface of the high-temperature resistant cylinder 100 and is scattered in the equipment main body.
The slag pressing collecting unit 400 comprises a motor C410, a frequency converter C411 for controlling the motor C410, and a rotary cross bar 420 connected with the motor C410 through a coupler C412 and a rotary transmission shaft C413, wherein the rotary cross bar 420 is connected with the grid bars 440 through a rotary ring 430, and extends into the lower part of the rotary cutting blades 330, the rotary ring 430 is connected with the grid bars 440 through double-ring buckles, so that the swing angle of the grid bars 440 during rotary sweeping is not limited, the collecting of the agglomerated slag wool 700 is facilitated more effectively, and the collecting amount of the slag wool 700 is improved. The motor C410 is fixedly connected with the coupler C412, so that the motor C410 is separated from the wall of the high-temperature-resistant cylinder 100, and the coupler C412 is connected with the rotary transmission shaft C413, so that the safety of equipment operation can be improved, and meanwhile, the equipment is convenient to operate. The motor C410 is a three-phase alternating current motor, the highest rotating speed of the rotating transmission shaft C413 is controlled to be 5r/min, the motor C410 can perform variable speed control on the rotating speed of the rotating transmission shaft C413 by 0-5r/min, the actual running rotating speed of equipment is n3, the value of n3 is 1r/min, and the rotating speed of the motor C410 is adjusted through the frequency converter C411 so as to cooperatively collect the actual generated discontinuous slag cotton 700. The grid bars 440 are vertical cylindrical steel bars, the lengths of all the grid bars 440 are equal, a large enough collection area can be ensured when the grid bars 440 are scanned laterally during rotation, the length of each grid bar 440 is L2, the value of L2 is 500mm, each grid bar 440 can generate a swinging angle alpha 2 relative to the vertical direction along with the movement of the rotating transmission shaft C413 relative to the rotating cross bar 420, the value of alpha 2 is 1 degree, the number of the grid bars 440 is N2, the value of N2 is 6, the interval between the grid bars 440 is D2, and the value of D2 is 100mm. The grid 440 and the swivel 430 are buckled through the double rings, the rotation speed of the motor C410 controlled by the frequency converter C411 is very low, and the good effect of sweeping slag and collecting cotton is ensured, so that the problem that the slag cotton 700 is adhered to the wall surface of equipment to affect the operation of the equipment is solved, the problem that the slag cotton 700 is solidified on the wall surface and is difficult to peel due to the too high cooling speed is solved, and the processing process integration of materials is realized. N3 rotary cross bars 420 can be uniformly installed around the circumferential direction of the installation socket 450, the number of grid bars 440 connected to each rotary cross bar 420 is the same and is uniformly distributed around the rotation center, the value of N3 is 1, the number of installed rotary cross bars 420 can be controlled according to working conditions, and therefore the operability of the device is improved. By driving the slag collecting unit 400 to rotate and sweep the slag wool 700 adhered to the wall surface of the high temperature resistant cylinder 100 and scattered in the main body of the device, each grid 440 starts to rotate along with the rotation of the rotating cross bar 420, so that the scattered slag wool 700 is uniformly distributed on the grid 440 or directly swept down, and the slag wool 700 falls into the slag raking forming unit 500 through the smooth grid 440 under the action of gravity.
The harrow sediment forming unit 500 includes motor D510, the converter D511 of control motor D510 and the rack and pinion lifting device 520 that is connected with motor D510 through shaft coupling D512, rotatory transmission shaft D513, rack and pinion lifting device 520 and flexible branch 530 fixed connection, flexible branch 530 front end is equipped with the blade 550, and the blade 550 upwards stretches into the below of grid 440, the blade 550 bottom surface passes through support frame 560 with flexible branch 530 to be connected, the cover is equipped with sliding sleeve 540 on the flexible branch 530, and blade 550 passes through sliding sleeve 540 with support frame 560 and flexible branch 530 and articulates, realizes the reciprocating motion of rack and pinion lifting device 520 through control converter D511. The opening and closing movement of the harrow piece 550 solves the defect of inconvenient agglomeration caused by uneven distribution of the slag cotton 700 in the harrow pulling process of the discontinuous slag cotton 700 collected by the slag collecting unit 400, and the acting force applied by the harrow piece 550 on the telescopic support rod 530 is uniformly dispersed through the center of the telescopic support rod 530, so that the continuous slag cotton collecting unit has good continuous strength, is not easy to damage, and is convenient to operate and higher in equipment practicability; the motor D510 is a three-phase alternating current motor, the frequency converter D511 can control the rotation speed of the motor D510 in a variable speed mode, further, the motor D510 is regulated and controlled to control the reciprocating motion of the gear rack lifting device 520, the actual running speed of the rack is n4, the value of n4 is 50mm/s, and the rotation speed of the motor D510 is regulated through the frequency converter D511 so as to cooperate with the collection and forming of the discontinuous slag cotton 700 actually produced. The blades 550 are made of wear-resistant steel plates, the number of the blades 550 uniformly distributed around the top end of the telescopic support rod 530 is N4, the value of N4 is 8, the length of each blade 550 is L3, and the value range of L3 is 1200mm. For the non-formed slag cotton 700 entering from the slag pressing collecting unit 400, the rack and pinion lifting device 520 is driven to enable the telescopic support rods 530 to drive the harrow blades 550 to reciprocate, when the gravity of the slag cotton 700 contacts with the large-area bulk slag cotton 700, the harrow blades 550 are closed by upward movement, the downward movement is opened by upward and downward smooth movement, the dispersed fiber slag cotton 700 with light weight is driven to draw close downward to form the bulk slag cotton 700, and finally the bulk slag cotton 700 falls to the slag pushing conveying unit 600 under the combined action of the pulling force of the harrow blades 550 and the gravity of the self;
For the agglomerated slag wool 700 falling into the slag pushing and conveying unit 600, the slag pushing plate 630 is driven to continuously extrude the agglomerated slag wool 700 to the slag hole 120 at a uniform speed, and then the subsequent agglomerated slag wool 700 is packed and put in storage through the material conveying belt 640. The slag pushing and conveying unit 600 comprises a motor E611, a frequency converter E612 for controlling the motor E611 and a slag pushing plate 630 connected with the motor E611 through a coupler E612 and a pushing rod 620, wherein the slag pushing plate 630 is formed by two steel plates at intervals, the pushing rod 620 is fixedly connected with the slag pushing plate 630 in a crossing manner and is used for pushing slag wool 700 to the slag outlet 120, the tail end of the slag outlet 120 is connected with a conveying belt 640, and when the slag pushing plate 630 pushes materials, the slag pushing and conveying unit 600 can be prevented from being damaged to achieve the effect of prolonging the service life of equipment through a flexible steel wire brush base 650, and the integrated structure of the slag pushing and conveying unit 600 achieves the stable operation of the equipment body and ensures efficient cotton collecting output. The motor E611 is a three-phase alternating current motor, and the motor E611 is regulated and controlled to control the pushing rod 620 to do reciprocating pushing and pulling motion, so that the actual running speed of the slag pushing plate 630 is n5, and the value range of n5 is 15mm/s. The frequency converter E612 is used for adjusting the rotating speed of the motor E611 so as to match the reciprocating motion speed of the slag pushing plate 630, thereby being beneficial to controlling the output quantity of the agglomerated slag cotton 700, saving energy and improving the continuity of the slag cotton 700 in warehouse.
The inclined direction angle of the wall of the high-temperature resistant cylinder 100 is alpha 3, the alpha 3 has a value of-30 degrees, a smoke outlet 130 is formed in the lower left part of the high-temperature resistant cylinder 100, an induced draft fan is arranged at the smoke outlet 130 and can discharge blast furnace slag residual temperature and carry out waste heat utilization on the blast furnace slag, and an air inlet 140 and a slag outlet 120 are formed in the upper right part of the high-temperature resistant cylinder 100 and can provide enough air to carry heat, so that negative pressure is formed in the device, and smoke is discharged more efficiently. The tapping temperature of the current molten blast furnace slag is 1350-1550 ℃, the enthalpy is 1.8MJ/kg, the sensible heat of each ton of slag is equivalent to the calorific value of 60kg of standard coal, and the recovery rate of the waste heat after the molten blast furnace slag is treated by a centrifugal granulation method is generally over 70%, so that the waste heat can be fully utilized and the safety of the working environment is ensured.
Example 2
The embodiment is basically the same as embodiment 1, except that the slag cotton production unit is a slag cotton crushing device (see chinese patent CN111074019 a), and the slag cotton 700 processed by the slag cotton crushing device falls into the pressed slag collecting unit 400 to collect and process the slag cotton 700.
Example 3
This embodiment is basically the same as embodiment 1, except that the slag wool production unit is a centrifugal roller (see chinese patent CN102211861 a), and the slag wool 700 obtained by the centrifugal roller treatment falls into the pressed slag collection unit 400 to collect and process the slag wool 700.
Example 4
The embodiment is basically the same as embodiment 1, except that the frequency converter a 311 in the rotary crushing unit 300 may perform variable speed control on the rotation speed of the motor a 310 by 0-2800r/min, the actual running rotation speed of the device is n1, n1 has a value of 2300r/min, the frequency converter B321 may perform variable speed control on the rotation speed of the motor B320 by 0-2800r/min, and the actual running rotation speed of the device is n2, n2 has a value of 2300r/min. The rotary cutting blade 330 is a vertical blade, the blade length is L1, the value of L1 is 300mm, the blade interval angle is α1, the value of α1 is 30 °, the number of blades is N1, and the value of N1 is 12. The feeding unit 200 includes a liquid slag runner 210, the front end of the liquid slag runner 210 is matched with the liquid slag feeding port 110, the opening width of the liquid slag feeding port 110 is D1, the value of D1 is 200mm, the included angle between the opening direction of the liquid slag runner 210 and the horizontal direction is β, and the value of β is 30 °.
The motor C410 in the slag pressing and collecting unit 400 is a three-phase ac motor, the highest rotation speed of the rotary transmission shaft C413 is 2r/min, the inclination angle of the wall of the high temperature resistant cylinder 100 is α3, and the value of α3 is 0 °. The frequency converter C411 may perform variable speed control of 0-5r/min on the rotation speed of the rotation transmission shaft C413, the actual running rotation speed of the rotation transmission shaft C413 is N3, the N3 has a value of 3r/min, the grid bars 440 are vertical cylindrical steel bars, the lengths of the grid bars 440 are L2, the L2 has a value of 1500mm, each grid bar 440 can generate a swinging angle alpha 2 relative to the vertical direction along with the movement of the rotation transmission shaft C413 relative to the rotation cross bar 420, the alpha 2 has a value of 5 °, the number of grid bars 440 is N2, the N2 has a value of 7, the intervals between the grid bars 440 are D2, and the D2 has a value of 150mm; n3 rotating crossbars 420 can be installed around the installation socket 450, the number of the grid bars 440 connected to each rotating crossbar 420 is the same, the grid bars are uniformly distributed around the rotation center, and the value of N3 is 2.
The harrow piece 550 is made of wear-resistant steel plates, the number of harrow pieces of the harrow piece 550 surrounding the telescopic support rod 530 for a circle is N4, the value of N4 is 10, the length of each harrow piece 550 is L3, the value of L3 is 850mm, the motor D510 in the harrow slag forming unit 500 is a three-phase alternating current motor, the frequency converter D511 can carry out variable speed control on the rotating speed of the motor D510, further, the motor D510 is regulated and controlled to control the reciprocating motion of the gear rack lifting device 520, the actual running speed of the rack is N4, and the value of N4 is 58mm/s.
The motor E610 in the slag pushing and conveying unit 600 is a three-phase ac motor, so that the motor E610 is controlled to control the pushing rod 620 to perform reciprocating pushing and pulling motion, so that the actual running speed of the slag pushing plate 630 is n5, and the value of n5 is 20mm/s.
Example 5
The embodiment is basically the same as embodiment 1, except that the frequency converter a 311 in the rotary crushing unit 300 may perform variable speed control on the rotation speed of the motor a 310 by 0-2800r/min, the actual running rotation speed of the device is n1, the n1 value is 2800r/min, the frequency converter B321 may perform variable speed control on the rotation speed of the motor B320 by 0-2800r/min, and the actual running rotation speed of the device is n2, the n2 value is 2800r/min. The rotary cutting blade 330 is a vertical blade, the blade length is L1, the value of L1 is 350mm, the blade interval angle is α1, the value of α1 is 40 °, the number of blades is N1, and the value of N1 is 10. The feeding unit 200 includes a liquid slag runner 210, the front end of the liquid slag runner 210 is matched with the liquid slag feeding port 110, the opening width of the liquid slag feeding port 110 is D1, the value of D1 is 250mm, the included angle between the opening direction of the liquid slag runner 210 and the horizontal direction is beta, and the value of beta is 45 degrees.
The motor C410 in the slag pressing and collecting unit 400 is a three-phase ac motor, the highest rotation speed of the rotary transmission shaft C413 is 5r/min, the inclination angle of the wall of the high temperature resistant cylinder 100 is α3, and the value of α3 is 30 °. The frequency converter C411 may perform variable speed control of 0-5r/min on the rotation speed of the rotation transmission shaft C413, the actual running rotation speed of the rotation transmission shaft C413 is N3, the N3 has a value of 5r/min, the grid bars 440 are vertical cylindrical steel bars, the lengths of the grid bars 440 are L2, the L2 has a value of 2000mm, each grid bar 440 can generate a swinging angle alpha 2 relative to the vertical direction along with the movement of the rotation transmission shaft C413 relative to the rotation cross bar 420, the alpha 2 has a value of 10 °, the number of grid bars 440 is N2, the N2 has a value of 8, the intervals between the grid bars 440 are D2, and the D2 has a value of 200mm. N3 rotating crossbars 420 can be installed around the installation socket 450, the number of the grid bars 440 connected to each rotating crossbar 420 is the same, the grid bars are uniformly distributed around the rotation center, and the value of N3 is 4.
The harrow piece 550 is made of wear-resistant steel plates, the number of harrow pieces of the harrow piece 550 surrounding the telescopic support rod 530 is N4, the value of N4 is 12, the length of each harrow piece 550 is L3, the value range of L3 is 500mm, a motor D510 in the harrow slag forming unit 500 is a three-phase alternating current motor, a frequency converter D511 can carry out variable speed control on the rotating speed of the motor D510, further, the motor D510 is regulated and controlled to control the reciprocating motion of the gear rack lifting device 520, the actual running speed of a rack is N4, and the value of N4 is 65mm/s.
The motor E610 in the slag pushing and conveying unit 600 is a three-phase ac motor, so that the motor E610 is controlled to control the pushing rod 620 to reciprocate to push and pull, so that the actual running speed of the slag pushing plate 630 is n5, and the value range of n5 is 25mm/s.
The above description is only of the preferred embodiments of the present invention and is not intended to limit the invention in any way, and any person skilled in the art may make modifications or alterations to the disclosed technical content to the equivalent embodiments. However, any simple modification, equivalent variation and variation of the above embodiments according to the technical substance of the present invention still fall within the protection scope of the technical solution of the present invention.
Claims (5)
1. A slag cotton collecting device for producing slag cotton from molten blast furnace slag, which comprises a slag cotton production unit,
the slag cotton collecting device is characterized by further comprising a slag cotton pressing collecting unit (400) which is positioned below the slag cotton production unit and used for collecting slag cotton (700), wherein the slag cotton collecting unit comprises a power output component C and a rotary cross rod (420) connected with the power output component C through a rotary transmission shaft C (413), the rotary cross rod (420) is connected with a grid (440) through a swivel (430) and stretches into the lower part of the rotary cutting blade (330);
The slag cotton production unit comprises:
the device comprises a barrel body (100), wherein at least one liquid slag feeding port (110) is formed in the top of the barrel body, a slag outlet (120) is formed in the bottom of the side surface of the barrel body, a cavity for collecting slag cotton (700) produced by molten blast furnace slag is formed in the barrel body, the barrel body (100) is a high-temperature resistant cylinder, a flue gas outlet (130) is formed below the side surface of the barrel body (100), an air inlet (140) is formed above the side surface of the barrel body (100), the inclination direction angle of the barrel wall is alpha 3, the vertical direction angle is 0 degrees, the outward inclination is positive angle, the inward inclination is negative angle, and the value range of alpha 3 is-30 degrees;
the feeding unit (200) comprises a liquid slag runner (210), and the front end of the liquid slag runner (210) is matched with the liquid slag feeding port (110);
a rotary crushing unit (300) comprising at least one power take-off member a and rotary cutting blades (330) connected to the power take-off member a by a rotary drive shaft a (313), the rotary cutting blades (330) extending into the cavity and being located below the liquid slag feed opening (110);
the device comprises a slag pressing and collecting unit (400), and is characterized by further comprising a slag raking and forming unit (500) which is positioned below the slag pressing and collecting unit (400) and used for forming slag wool (700), wherein the slag pressing and collecting unit comprises a power output component D and a gear rack lifting device (520) connected with the power output component D through a rotary transmission shaft D (513), the gear rack lifting device (520) is fixedly connected with a telescopic supporting rod (530), a harrow piece (550) is arranged at the front end of the telescopic supporting rod (530), the harrow piece (550) stretches upwards into the lower part of the grating (440), the bottom surface of the harrow piece (550) is connected with the telescopic supporting rod (530) through a supporting framework (560), a sliding sleeve (540) is sleeved on the telescopic supporting rod (530), and the harrow piece (550) is hinged with the supporting framework (560) and the telescopic supporting rod (530) through the sliding sleeve (540), so that the reciprocating motion of the gear rack lifting device (520) is realized through controlling the power output component D.
Still include pushing away sediment transfer unit (600), be located harrow sediment forming unit (500) below for conveying the sediment cotton (700), it includes power take off component E and pushes away slag plate (630) that are connected with power take off component E through pushing away material pole (620), pushing away material pole (620) and pushing away slag plate (630) fixed connection for with the cotton (700) of sediment push away to slag notch (120), slag notch (120) end-to-end connection conveying conveyer belt (640), it constitutes to push away slag plate (630) by two steel sheets interval, pushing away material pole (620) and pushing away slag plate (630) alternately fixed connection.
2. The slag cotton collecting device for melting blast furnace slag, as set forth in claim 1, wherein the power output component a comprises a motor a (310) and a frequency converter a (311) for controlling the motor a (310), the motor a (310) is a three-phase alternating-current high-speed motor, the frequency converter a (311) can perform variable speed control of 0-2800r/min on the rotating speed of the motor a (310), the actual operating rotating speed of the equipment is n1, and the value range of n1 is 1800-2800r/min;
the power output component C comprises a motor C (410) and a frequency converter C (411) for controlling the motor C (410), the motor C (410) is a three-phase alternating current motor, the highest rotating speed of the rotating transmission shaft C (413) is 5r/min, the actual running rotating speed of the rotating transmission shaft C (413) is n3, and the value range of n3 is 0-5r/min;
The power output component D comprises a motor D (510) and a frequency converter D (511) for controlling the motor D (510), the motor D (510) is a three-phase alternating current motor, the frequency converter D (511) regulates and controls the motor D (510) to control the reciprocating motion of the gear rack lifting equipment (520), the actual running speed of the rack is n4, and the value range of n4 is 50-65mm/s;
the power output component E comprises a motor E (610) and a frequency converter E (611) for controlling the motor E (610), the motor E (610) is a three-phase alternating current motor, and the pushing rod (620) is controlled to do reciprocating pushing and pulling movement by controlling the motor E (610), so that the actual running speed of the slag pushing plate (630) is n5, and the value range of n5 is 15-25mm/s.
3. The collecting device for slag-making cotton of molten blast furnace slag according to claim 1, wherein the rotary cutting blades (330) are vertical blades, the length of each blade is L1, the value range of the length of each blade L1 is 250-350mm, the interval angle of each blade is alpha 1, the value range of alpha 1 is 20-40 degrees, the number of the blades is N1, and the value range of N1 is 10-14;
the grid bars (440) are vertical cylindrical steel bars, the length of the grid bars (440) is L2, the value range of the L2 is 500-2000mm, N3 rotary cross bars (420) are uniformly arranged around the circumferential direction of the mounting socket (450), the value range of the N3 is 1-4, the number of the grid bars (440) on each rotary cross bar (420) is N2, the value range of the N2 is 6-8, the interval between the grid bars (440) is D2, and the value range of the D2 is 100-200mm; the grid bars (440) swing along with the movement of the rotary transmission shaft C (413), the swing angle relative to the vertical direction is alpha 2, and the value range of alpha 2 is 0-10 degrees;
The harrow pieces (550) are uniformly distributed around the top end of the telescopic supporting rod (530), the number of the harrow pieces (550) is N4, the value range of the N4 is 8-12, the length of each harrow piece (550) is L3, and the value range of the L3 is 500-1200 mm.
4. The collecting device for slag wool of molten blast furnace slag according to claim 1, wherein the opening width of the liquid slag feeding port (110) is D1, the value range of D1 is 150-200mm, the included angle between the opening direction of the liquid slag runner (210) and the horizontal direction is beta, and the value range of beta is 20-45 °.
5. The slag wool collecting device for molten blast furnace slag according to claim 1, wherein the bottom of the cavity is a flexible wire brush base (650).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210332215.8A CN115196867B (en) | 2022-03-31 | 2022-03-31 | Cotton collection device of melting blast furnace slag system sediment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210332215.8A CN115196867B (en) | 2022-03-31 | 2022-03-31 | Cotton collection device of melting blast furnace slag system sediment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115196867A CN115196867A (en) | 2022-10-18 |
| CN115196867B true CN115196867B (en) | 2023-11-24 |
Family
ID=83574416
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210332215.8A Active CN115196867B (en) | 2022-03-31 | 2022-03-31 | Cotton collection device of melting blast furnace slag system sediment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115196867B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0648763A (en) * | 1992-07-24 | 1994-02-22 | Kawasaki Steel Corp | Method for controlling shot pill rate in rock wool |
| JPH0687626A (en) * | 1992-08-31 | 1994-03-29 | Kawasaki Steel Corp | Method for controlling rate of shot particle in rock wool |
| WO2015142294A1 (en) * | 2014-03-17 | 2015-09-24 | Izoteh D.O.O. | Collecting chamber and fiber formation method |
| CN105753310A (en) * | 2016-03-09 | 2016-07-13 | 四川帕沃可矿物纤维制品有限公司 | Basalt mineral wool solid waste recycling production line and basalt mineral wool solid waste recycling production process |
| CN112897870A (en) * | 2021-03-01 | 2021-06-04 | 江苏莱特凯机械有限公司 | Device for producing rock wool by melting blast furnace slag |
| CN114042514A (en) * | 2021-11-19 | 2022-02-15 | 安徽工业大学 | Liquid blast furnace slag rotary cutting breaker |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2017519115A (en) * | 2014-06-03 | 2017-07-13 | ハッチ リミテッド | Process and apparatus for dry granulation of slag using reduced formation of slag wool |
-
2022
- 2022-03-31 CN CN202210332215.8A patent/CN115196867B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0648763A (en) * | 1992-07-24 | 1994-02-22 | Kawasaki Steel Corp | Method for controlling shot pill rate in rock wool |
| JPH0687626A (en) * | 1992-08-31 | 1994-03-29 | Kawasaki Steel Corp | Method for controlling rate of shot particle in rock wool |
| WO2015142294A1 (en) * | 2014-03-17 | 2015-09-24 | Izoteh D.O.O. | Collecting chamber and fiber formation method |
| CN105753310A (en) * | 2016-03-09 | 2016-07-13 | 四川帕沃可矿物纤维制品有限公司 | Basalt mineral wool solid waste recycling production line and basalt mineral wool solid waste recycling production process |
| CN112897870A (en) * | 2021-03-01 | 2021-06-04 | 江苏莱特凯机械有限公司 | Device for producing rock wool by melting blast furnace slag |
| CN114042514A (en) * | 2021-11-19 | 2022-02-15 | 安徽工业大学 | Liquid blast furnace slag rotary cutting breaker |
Also Published As
| Publication number | Publication date |
|---|---|
| CN115196867A (en) | 2022-10-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107916312B (en) | Steel slag dry process and waste heat recycling and electricity-generating method | |
| CN105732002B (en) | Ceramsite production process and its production equipment | |
| WO2019161639A1 (en) | Dry type centrifugal granulation and waste heat recycling and utilization system for liquid molten slag | |
| CN104861996B (en) | A kind of technique for biomass pyrolysis carbon gas oil polygenerations systeme | |
| CN109022005A (en) | A kind of continuous biomass charing device and production method | |
| CN106116133A (en) | A kind of rock wool production line of energy-saving high yield | |
| CN115196867B (en) | Cotton collection device of melting blast furnace slag system sediment | |
| CN203610409U (en) | Online destroying system of tobacco stem wastes | |
| CN207330964U (en) | A kind of blast furnace water-flushing-slag apparatus based on itself permeation filtration | |
| CN209953020U (en) | Slag grinding production line | |
| CN108774010A (en) | A kind of white cement clinker production grate-cooler | |
| CN103357482B (en) | Method and system for crushing wood material into wood chips and drying wood chips | |
| CN109129878A (en) | A kind of preparation facilities of ceramic material | |
| CN217423769U (en) | Manganese sulfate drying device based on hot-blast stove | |
| CN209440620U (en) | A kind of PET cloth waste resource reutilization green circulatory intelligent manufacturing system | |
| CN207936718U (en) | A kind of novel mesh dryer | |
| CN201102930Y (en) | Circular cylinder type drying and cooling screener | |
| CN206104314U (en) | Biomass feedstock removes musky coal screening plant | |
| CN206899568U (en) | A kind of waste plastic bottle recycling production system | |
| CN215480575U (en) | Production device for producing mineral wool from waste residues generated in production of silicon-manganese alloy | |
| CN205288641U (en) | Supporting broken system of drying and removing dust | |
| CN114042514A (en) | Liquid blast furnace slag rotary cutting breaker | |
| CN111974531B (en) | Slag granulating and crushing equipment | |
| CN207546655U (en) | A kind of novel broken cotton machine | |
| CN112897870A (en) | Device for producing rock wool by melting blast furnace slag |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |