CN111979366B - Liquid steel slag air quenching granulating production line and production process thereof - Google Patents
Liquid steel slag air quenching granulating production line and production process thereof Download PDFInfo
- Publication number
- CN111979366B CN111979366B CN202010861108.5A CN202010861108A CN111979366B CN 111979366 B CN111979366 B CN 111979366B CN 202010861108 A CN202010861108 A CN 202010861108A CN 111979366 B CN111979366 B CN 111979366B
- Authority
- CN
- China
- Prior art keywords
- steel slag
- slag
- granulating
- control mechanism
- liquid steel
- 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 232
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 133
- 239000010959 steel Substances 0.000 title claims abstract description 133
- 239000007788 liquid Substances 0.000 title claims abstract description 69
- 238000010791 quenching Methods 0.000 title claims abstract description 41
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 35
- 230000000171 quenching effect Effects 0.000 title claims abstract description 32
- 230000007246 mechanism Effects 0.000 claims abstract description 91
- 238000001816 cooling Methods 0.000 claims abstract description 43
- 238000000746 purification Methods 0.000 claims abstract description 43
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 22
- 239000000779 smoke Substances 0.000 claims abstract description 16
- 239000007921 spray Substances 0.000 claims abstract description 15
- 239000000428 dust Substances 0.000 claims abstract description 12
- 238000001914 filtration Methods 0.000 claims abstract description 7
- 239000007789 gas Substances 0.000 claims description 27
- 238000000034 method Methods 0.000 claims description 22
- 230000008569 process Effects 0.000 claims description 19
- 230000007306 turnover Effects 0.000 claims description 19
- 239000011361 granulated particle Substances 0.000 claims description 14
- 238000011084 recovery Methods 0.000 claims description 13
- 239000002912 waste gas Substances 0.000 claims description 13
- 238000005469 granulation Methods 0.000 claims description 12
- 230000003179 granulation Effects 0.000 claims description 12
- 230000001105 regulatory effect Effects 0.000 claims description 12
- 101000623895 Bos taurus Mucin-15 Proteins 0.000 claims description 6
- 230000001502 supplementing effect Effects 0.000 claims description 6
- 230000000694 effects Effects 0.000 abstract description 6
- 238000004064 recycling Methods 0.000 abstract description 5
- 238000005516 engineering process Methods 0.000 abstract description 3
- 239000002245 particle Substances 0.000 description 19
- 239000007787 solid Substances 0.000 description 12
- 239000000498 cooling water Substances 0.000 description 5
- 230000009471 action Effects 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 239000012535 impurity Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000003912 environmental pollution Methods 0.000 description 2
- 238000004062 sedimentation Methods 0.000 description 2
- 238000009423 ventilation Methods 0.000 description 2
- FGRBYDKOBBBPOI-UHFFFAOYSA-N 10,10-dioxo-2-[4-(N-phenylanilino)phenyl]thioxanthen-9-one Chemical compound O=C1c2ccccc2S(=O)(=O)c2ccc(cc12)-c1ccc(cc1)N(c1ccccc1)c1ccccc1 FGRBYDKOBBBPOI-UHFFFAOYSA-N 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000010808 liquid waste Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000009628 steelmaking Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- 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
-
- 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
- C21B3/08—Cooling slag
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B2400/00—Treatment of slags originating from iron or steel processes
- C21B2400/02—Physical or chemical treatment of slags
- C21B2400/022—Methods of cooling or quenching molten slag
- C21B2400/026—Methods of cooling or quenching molten slag using air, inert gases or removable conductive bodies
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B2400/00—Treatment of slags originating from iron or steel processes
- C21B2400/04—Specific shape of slag after cooling
- C21B2400/044—Briquettes or moulded bodies other than sheets
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B2400/00—Treatment of slags originating from iron or steel processes
- C21B2400/05—Apparatus features
- C21B2400/062—Jet nozzles or pressurised fluids for cooling, fragmenting or atomising 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
-
- 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
A liquid steel slag wind quenching and granulating production line and a production process thereof, wherein the liquid steel slag wind quenching and granulating production line comprises an electric control chamber, a compressed air source, an air pipeline, a steel slag granulating mechanism, a steel slag processing chamber, an exhaust purification tower, an exhaust pipeline, a cooling circulation tank, a slag recycling mechanism, a slag extracting tank and an observation chamber; according to the invention, the compressed air source directly acts on the supersonic gas injector in the granulator through the air pipeline, so that the air flow can collect and quench the liquid steel slag, the processing technology is optimized, the optimal working position is found to realize the ideal granulating effect of the liquid steel slag by adding the adjustment of the granulator before the air quenching granulating, the spray water pipe washes the smoke dust to a certain extent, and then the smoke enters the exhaust purification tower for further filtration and purification.
Description
Technical Field
The invention belongs to the technical field of steel slag treatment, and particularly relates to a liquid steel slag air quenching granulating production line and a production process thereof.
Background
The steel slag is waste slag generated in the steelmaking process, the steel slag is formed at the temperature of 1500-1700 ℃, is in a liquid state at a high temperature, is cooled to be capable of being quenched into particles, and is provided with a forced cooling chamber through a search patent number CN110747302A, a steel slag air quenching device and a steel slag granulating method;
but suffer from the following disadvantages: 1) The upper side part of the device main body is provided with at least two nozzles facing the forced cooling chamber, so that more effective wind quenching treatment cannot be assisted, wind quenching is carried out by air flow with higher pressure in the wind quenching process, the arranged forced nozzles can influence the flight track of liquid steel slag, and the steel slag is not beneficial to being cooled in the flight process; 2) When the steel slag granulating method is used for construction production, the air outlet of the main air pipeline is a fixed air outlet, so that the regulation can not be effectively carried out according to the slag state, and the quality of some granulated finished products is poor.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provide a liquid steel slag wind quenching granulating production line and a production process thereof, wherein a compressed air source directly acts on a supersonic gas injector in a granulator through an air pipeline, so that air flow is enabled to perform wind quenching on liquid steel slag, thereby changing the track of a flight parabola of the liquid steel slag after the supersonic air flow is sprayed, further guaranteeing rapid granulating and cooling of steel slag particles in the air, optimizing the processing process, adjusting the granulator to adjust according to the slag state before wind quenching granulating, presetting the steel slag movement track, finding the optimal working position, realizing the ideal liquid steel slag granulating effect, washing smoke dust to a certain extent through a spray water pipe in a steel slag processing chamber, reducing particles contained in waste gas, further filtering the smoke gas through a purification filter layer arranged at the top of the steel slag processing chamber, enabling the smoke gas to enter a purification tower through an exhaust pipeline under the action of an exhaust fan, and further filtering and purifying to prevent environmental pollution.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows:
the utility model provides a liquid steel slag wind quenching granulation production line, includes automatically controlled room, compressed air source, air pipe, slag granulation mechanism, slag treatment room, exhaust purification tower, exhaust pipe, cooling circulation tank, slag recovery mechanism, carry slag bath, observation room, slag treatment room one side is equipped with slag granulation mechanism, slag treatment room one side is equipped with cooling circulation tank, slag treatment room opposite side is equipped with slag recovery mechanism, slag recovery mechanism one side is equipped with carries slag bath, carries slag bath one side and is equipped with cooling circulation tank, the air pipe sets up in slag granulation mechanism one side, the air pipe opposite side is equipped with the compressed air source, and compressed air source one side is equipped with the exhaust purification tower, exhaust purification tower one side is equipped with exhaust pipe, compressed air source opposite side is equipped with the observation room, and observation room one side is equipped with automatically controlled room, and the compressed air source passes through air pipe and is connected with slag granulation mechanism, and exhaust purification tower passes through exhaust pipe and is connected with slag treatment room;
the electric control room is used for providing electric power transmission for the whole equipment system, ensuring normal operation of the equipment, compressed air is transmitted to the steel slag granulating mechanism through an air pipeline by virtue of a compressed air source, liquid steel slag is granulated by virtue of a high-pressure air flow matched with the steel slag granulating mechanism, the liquid steel slag is processed into solid particles in the steel slag processing room, waste gas and fine dust generated in the process are transmitted to the exhaust purification tower through an exhaust pipeline to be purified and discharged, the solid particles generated in the steel slag processing room enter a slag extracting tank, the generated solid particles are cooled by a cooling circulation tank, the cooling circulation tank is used for recycling cooling water after the impurities contained in cooling water are graded and filtered by virtue of each grade of sedimentation tanks, the granulated particles are finally collected by virtue of a slag recycling mechanism, and the safety operation of the whole system is monitored in real time by virtue of an observation room.
Preferably, the steel slag granulating mechanism comprises a slag pot, a conveying turnover vehicle, a granulator, a tundish and a slag flowing groove, wherein the conveying turnover vehicle is arranged on one side of the slag pot, the tundish is arranged on one side of the conveying turnover vehicle, the slag flowing groove is arranged on one side of the tundish, the granulator is arranged on one side of the slag flowing groove, an air pipeline is communicated with the granulator, liquid steel slag in the slag pot is poured into the slag pot under the action of the conveying turnover vehicle, the liquid steel slag in the slag pot flows down along the slag flowing groove through the tundish, the granulator carries out wind quenching of high-pressure air flow on the liquid steel slag, and solid particles are formed in the steel slag processing chamber.
Preferably, the granulator comprises a height control mechanism, a distance control mechanism, an angle control mechanism and a supersonic gas injector, wherein the distance control mechanism is arranged on one side of the height control mechanism, the angle control mechanism is arranged on one side of the distance control mechanism, the supersonic gas injector is arranged on one side of the angle control mechanism, the optimal working position is found through the height control mechanism to achieve the ideal granulating effect of the liquid steel slag, the distance between the granulator and the flowing liquid steel slag can be adjusted through the distance control mechanism to effectively achieve the flying cooling distance of the steel slag granulating in the air, and then the angle control mechanism is used for changing the track of a flying parabola of the liquid steel slag after being sprayed by supersonic gas flow, so that multi-dimensional adjustment can be carried out according to different slag states.
Preferably, the height control mechanism comprises a screw adjusting component I and an X-shaped supporting frame, wherein one side of the screw adjusting component I is provided with the X-shaped supporting frame, the X-shaped supporting frame is controlled to stretch out and draw back through the screw adjusting component I so as to adjust the height, the distance control mechanism comprises a screw adjusting component II and a connecting seat body, the connecting seat body is arranged on one side of the screw adjusting component II, the displacement of the connecting seat body is controlled through the screw adjusting component II, and then the adjustment of the transverse movement distance is realized, the angle control mechanism comprises a gear rack component and a screw rod, one side of the gear rack component is provided with the screw rod, and the screw rod pulls a rack so that the rack drives a gear to rotate, and then the angle of the supersonic gas injector is adjusted.
Preferably, an air compressor is arranged on one side of the compressed air source, and the air compressor is a high-pressure air compressor, so that the pressure of the compressed air source is not lower than 0.6MPa.
Preferably, one side of the air pipeline is provided with a regulating valve, and the ventilation quantity entering the granulator through the air pipeline is controlled through the regulating valve, so that the granulator is ensured to carry out a good granulating working process on the liquid steel slag.
Preferably, the slag treatment chamber comprises a purification filter layer and spray water pipes, the purification filter layer is arranged in the slag treatment chamber, one side of the purification filter layer is provided with a plurality of spray water pipes, solidified particles are cooled through the spray water pipes, and meanwhile generated waste gas can be washed and filtered and purified through the purification filter layer.
Preferably, an exhaust fan is arranged on one side of the exhaust purification tower, and the exhaust fan is used for accelerating the exhaust speed of waste gas and dust in the steel slag treatment chamber.
Preferably, a water supplementing pump is arranged on one side of the cooling circulation tank, and the water quantity consumed in the cooling circulation tank can be supplemented by opening the water supplementing pump.
Preferably, the slag recovery mechanism comprises a lifting machine and a collecting hopper, wherein the collecting hopper is arranged on one side of the lifting machine, and solid particles cooled in the lifting pool are conveyed to the collecting hopper through the lifting machine.
Further, the air quenching and granulating production process of the liquid steel slag comprises the following steps:
step 1, gas introduction: opening the regulating valve to enable the high-pressure air in the compressed air source to flow into the supersonic air injector in the granulator;
step 2, pouring steel slag: hoisting a slag pot to a conveying turnover vehicle through an aerial crane, and conveying the turnover vehicle to a tundish working position according to a track to perform tilting slag pouring operation, wherein the temperature range of liquid steel slag is controlled to be 1400-1550 ℃, and the slag pouring speed is controlled to be 1-1.5 t/min;
step 3, granulator adjustment: according to different batches of liquid steel slag, the granulator is regulated, and the optimal granulating movement track is obtained in the working process of granulating the steel slag through a height control mechanism, a distance control mechanism and an angle control mechanism;
step 4, wind quenching and granulating: the liquid steel slag flows out through a slag flowing groove, a supersonic gas injector is opened, the air pressure is controlled to be 0.7-1.0 MPa, the liquid steel slag is rapidly cooled and granulated in the process of flying to the other side of the steel slag treatment chamber, and after falling into a slag extracting pool, the residual temperature of granulated particles is cooled through a spray water pipe;
step 5, smoke treatment: starting an exhaust fan to enable waste gas in the steel slag treatment chamber to enter an exhaust purification tower along an exhaust pipeline, and filtering and purifying smoke dust;
and step 6, cooling and collecting the granulated particles: cooling the granulated particles by a cooling circulation tank to make the temperature lower than 150 ℃, and conveying the granulated particles into a collecting hopper by a lifting machine.
Compared with the prior art, the invention has the beneficial effects that:
1) The compressed air source directly acts on the supersonic gas injector in the granulator through the air pipeline, so that the air flow can collect and quench the liquid steel slag, and rapid granulating and cooling of steel slag particles in the air can be better ensured.
2) The method comprises the steps of optimizing a processing technology, adding the adjustment of a granulator before air quenching granulation to adjust according to slag states, presetting a steel slag movement track, finding an optimal working position to achieve a more ideal liquid steel slag granulation effect through a height control mechanism in the granulator, adjusting the distance between the granulator and flowing liquid steel slag through a distance control mechanism to more effectively achieve the flying cooling distance of steel slag granulation in air, and changing the track of a flying parabola of the liquid steel slag after supersonic airflow spraying through an angle control mechanism to find the optimal working position to achieve the more ideal liquid steel slag granulation effect.
3) A certain amount of smoke dust can be generated in the steel slag granulating process, the smoke dust is washed to a certain extent through a spray header in a steel slag processing chamber through an optimized processing method, particulate matters in waste gas are reduced, meanwhile, the smoke gas is further filtered through a purification filter layer arranged at the top of the steel slag processing chamber, and the smoke gas enters an exhaust purification tower through an exhaust pipeline under the action of an exhaust fan, so that the smoke gas is further filtered and purified, and environmental pollution is prevented.
Drawings
FIG. 1 is a schematic diagram showing the layout of a liquid steel slag air-quenching granulating production line and a liquid steel slag air-quenching granulating production line in the production process of the liquid steel slag air-quenching granulating production line;
FIG. 2 is a top view of FIG. 1;
FIG. 3 is a cross-sectional view of FIG. 1;
FIG. 4 is a schematic view of the granulator of FIG. 3;
FIG. 5 is a schematic diagram of a liquid steel slag air-quenching granulating process in a liquid steel slag air-quenching granulating production line and a liquid steel slag air-quenching granulating production process in the production process of the liquid steel slag air-quenching granulating production line;
in the figure: 1. an electric control chamber; 2. a compressed air source; 21. an air compressor; 22. an air duct; 23. a regulating valve; 3. a steel slag granulating mechanism; 31. a slag pot; 32. conveying the turnover vehicle; 33. a granulator; 331. a height control mechanism; 3311. a screw rod adjusting component I; 3312. an X-shaped supporting frame; 332. a distance control mechanism; 3321. a screw rod adjusting component II; 3322. a connecting seat body; 333. an angle control mechanism; 3331. a rack and pinion assembly; 3332. a screw; 334. a supersonic gas injector; 34. a tundish; 341. a slag runner; 4. a steel slag treatment chamber; 41. purifying and filtering layers; 42. a shower pipe; 6. an exhaust purification tower; 61. an exhaust fan; 62. an exhaust duct; 7. a cooling circulation tank; 71. a water supplementing pump; 8. a slag recovery mechanism; 81. a slag extracting pool; 82. a hoist; 83. a collection hopper; 9. an observation chamber.
Detailed Description
In order to facilitate understanding of those skilled in the art, the technical scheme of the present invention will be further specifically described below with reference to fig. 1 to 5.
The utility model provides a liquid steel slag wind quenching granulation production line and production technology thereof, including automatically controlled room 1, compressed air source 2, air pipe 22, slag granulating mechanism 3, slag processing chamber 4, exhaust purification tower 6, exhaust pipe 62, cooling circulation tank 7, slag recovery mechanism 8, carry slag tank 81, observation room 9, slag processing chamber 4 one side is equipped with slag granulating mechanism 3, slag processing chamber 4 one side is equipped with cooling circulation tank 7, slag processing chamber 4 opposite side is equipped with slag recovery mechanism 8, slag recovery mechanism 8 one side is equipped with carry slag tank 81, carry slag tank 81 one side is equipped with cooling circulation tank 7, air pipe 22 sets up in slag granulating mechanism 3 one side, air pipe 22 opposite side is equipped with compressed air source 2, compressed air source 2 one side is equipped with exhaust purification tower 6, exhaust purification tower 6 one side is equipped with exhaust pipe 62, compressed air source 2 opposite side is equipped with observation room 9, observation room 9 one side is equipped with automatically controlled room 1, compressed air source 2 is connected with slag granulating mechanism 3 through air pipe 22, purification tower 6 is connected with slag processing chamber 4 through exhaust pipe 62;
the electric control room 1 is used for providing electric power transmission for the whole equipment system, ensuring the normal operation of the equipment, compressed air is transmitted to the steel slag granulating mechanism 3 through the air pipeline 22 by the compressed air source 2, liquid steel slag is granulated by the high-pressure air flow matched with the steel slag granulating mechanism 3, the liquid steel slag is processed into solid particles in the steel slag processing room 4, waste gas and fine dust generated in the process are transmitted to the exhaust purification tower 6 through the exhaust pipeline 62 for purification and discharge, the solid particles generated in the steel slag processing room 4 enter the slag extracting tank 81, the cooling circulation tank 7 is used for cooling the generated solid particles, the cooling circulation tank 7 is used for recycling cooling water after the impurities contained in the cooling water are filtered in a grading manner by the various levels of sedimentation tanks, the granulated particles are finally collected by the slag recycling mechanism 8, and the safe operation of the whole system is monitored in real time by the observation room 9.
The steel slag granulating mechanism 3 comprises a slag pot 31, a conveying turnover vehicle 32, a granulator 33, a tundish 34 and a slag flowing groove 341, wherein the conveying turnover vehicle 32 is arranged on one side of the slag pot 31, the tundish 34 is arranged on one side of the conveying turnover vehicle 32, the slag flowing groove 341 is arranged on one side of the tundish 34, the granulator 33 is arranged on one side of the slag flowing groove 341, the air pipeline 22 is communicated with the granulator 33, liquid steel slag in the slag pot 31 flows down along the slag flowing groove 341 through the tundish 34 under the action of the conveying turnover vehicle 32, and the granulator 33 carries out wind quenching of high-pressure air flow on the liquid steel slag to form solid particles in the steel slag treatment chamber 4.
The granulator 33 comprises a height control mechanism 331, a distance control mechanism 332, an angle control mechanism 333 and a supersonic gas injector 334, wherein the distance control mechanism 332 is arranged on one side of the height control mechanism 331, the angle control mechanism 333 is arranged on one side of the distance control mechanism 332, the supersonic gas injector 334 is arranged on one side of the angle control mechanism 333, the optimal working position is found through the height control mechanism 331 to achieve the ideal granulating effect of the liquid steel slag, the distance between the liquid steel slag and the flowing liquid steel slag can be adjusted through the distance control mechanism 332 to effectively achieve the flying cooling distance of the steel slag in the air, and the trajectory of a flying parabola of the liquid steel slag after being sprayed by supersonic gas flow is changed through the angle control mechanism 333, so that multi-dimensional adjustment can be carried out according to different slag states.
The height control mechanism 331 includes screw adjustment subassembly I3311, X type support frame 3312, screw adjustment subassembly I3311 one side is equipped with X type support frame 3312, and flexible and then the realization of X type support frame 3312 is to the regulation of height through screw adjustment subassembly I3311 control, distance control mechanism 332 includes screw adjustment subassembly II 3321, connecting seat body 3322, screw adjustment subassembly II 3321 one side is equipped with connecting seat body 3322, through the displacement of screw adjustment subassembly II 3321 control connecting seat body 3322, and then realizes the regulation of lateral shifting distance, angle control mechanism 333 includes rack and pinion subassembly 3331, screw 3332, rack and pinion subassembly 3331 one side is equipped with screw 3332, pulls the rack through screw 3332, makes the rack drive the gear rotation, and then realizes the angle modulation of supersonic speed gas injector 334.
An air compressor 21 is arranged on one side of the compressed air source 2, and the air compressor 21 is a high-pressure air compressor, so that the pressure of the compressed air source is not lower than 0.6MPA.
One side of the air pipeline 22 is provided with a regulating valve 23, and the ventilation quantity entering the granulator 33 through the air pipeline is controlled through the regulating valve 23, so that the granulator 33 can carry out a good granulating working process on the liquid steel slag.
The steel slag treatment chamber 4 comprises a purification filter layer 41 and spray water pipes 42, the purification filter layer 41 is arranged in the steel slag treatment chamber 4, a plurality of spray water pipes 42 are arranged on one side of the purification filter layer 41, solidified particles are cooled through the spray water pipes 42, generated waste gas can be washed, and the waste gas is filtered and purified through the purification filter layer 41.
An exhaust fan 61 is arranged on one side of the exhaust purification tower 6, and the exhaust fan 61 is used for accelerating the exhaust speed of waste gas and tiny dust in the steel slag treatment chamber 4.
And a water supplementing pump 71 is arranged on one side of the cooling circulation tank 7, and the water quantity consumed in the cooling circulation tank 7 can be supplemented by opening the water supplementing pump 71.
The slag recovery mechanism 8 comprises a lifting machine 82 and a collecting hopper 83, wherein the collecting hopper 83 is arranged on one side of the lifting machine 82, and solid particles cooled in the slag lifting pool 81 are conveyed to the collecting hopper 83 through the lifting machine 82.
Further, the air quenching and granulating production process of the liquid steel slag comprises the following steps:
step 1, gas introduction: opening the regulating valve to enable the high-pressure air in the compressed air source to flow into the supersonic air injector in the granulator;
step 2, pouring steel slag: hoisting a slag pot to a conveying turnover vehicle through an aerial crane, and conveying the turnover vehicle to a tundish working position according to a track to perform tilting slag pouring operation, wherein the temperature of liquid steel slag is controlled at 1500 ℃, and the slag pouring speed is controlled at 1.1t/min;
step 3, granulator adjustment: according to different batches of liquid steel slag, the granulator is regulated, and the optimal granulating movement track is obtained in the working process of granulating the steel slag through a height control mechanism, a distance control mechanism and an angle control mechanism;
step 4, wind quenching and granulating: the liquid steel slag flows out through a slag flowing groove, a supersonic gas injector is opened, the air pressure is controlled at 0.8MPa, the liquid steel slag is rapidly cooled and granulated in the process of flying to the other side of the steel slag treatment chamber, and after falling into a slag extracting pool, the residual temperature of granulated particles is cooled through a spray water pipe;
step 5, smoke treatment: starting an exhaust fan to enable waste gas in the steel slag treatment chamber to enter an exhaust purification tower along an exhaust pipeline, and filtering and purifying smoke dust;
and step 6, cooling and collecting the granulated particles: cooling the granulated particles by a cooling circulation tank to make the temperature lower than 150 ℃, and conveying the granulated particles into a collecting hopper by a lifting machine.
A liquid steel slag wind quenching granulating production line and a production process thereof, the working process is as follows:
the electric control chamber is used for providing electric power transmission for the whole equipment system, ensuring the normal operation of the equipment, compressed air is transmitted to a supersonic gas injector in a granulator through an air pipeline by a compressed air source, a slag pot is hoisted to a transport turnover vehicle by a navigation crane, the transport turnover vehicle is operated to a tundish working position for tilting slag pouring operation according to a track, the temperature of liquid steel slag is controlled at 1500 ℃, the slag pouring speed is controlled at 1.1t/min, the granulator is used for carrying out air quenching granulation on the liquid steel slag by a high-pressure air flow after the adjustment of the granulator is completed, the supersonic gas injector is opened, the air pressure is controlled at 0.8MPa, the liquid waste slag is cooled and granulated rapidly in the process of flying to the other side of the steel slag treatment chamber, after falling into a slag extracting tank, waste gas dust generated in the process is washed by a spray water pipe and then passes through a purification filter layer, finally, the solid particles generated in the process of the steel slag treatment chamber are transmitted to a purification tower through an exhaust pipeline for purification and discharge, the generated solid particles enter the slag extracting tank, the cooling tank is cooled to 150 ℃ by the cooling circulation tank, the cooling tank is cooled down by the cooling tank, the cooling water is monitored, the whole slag particles are recycled, and the impurities are recycled through the cooling system, and the cooling system is monitored in real time, and the whole system is safely recycled.
The above-mentioned supersonic gas injector, the screw adjusting assembly I and the screw assembly II each comprise a ball screw and a screw nut, and the rack and pinion assembly comprises a gear and a rack, which are components producible by the prior art and are commercially available or factory custom-made.
The foregoing is merely illustrative and explanatory of the invention, as it is well within the scope of the invention as claimed, as it relates to various modifications, additions and substitutions for those skilled in the art, without departing from the inventive concept and without departing from the scope of the invention as defined in the accompanying claims.
Claims (7)
1. The liquid steel slag air quenching granulating production line comprises an electric control chamber, a compressed air source, an air pipeline, a steel slag granulating mechanism, a steel slag processing chamber, an exhaust purification tower, an exhaust pipeline, a cooling circulation tank, a slag recovery mechanism, a slag extracting tank and an observation chamber, and is characterized in that one side of the steel slag processing chamber is provided with the steel slag granulating mechanism, one side of the steel slag processing chamber is provided with the cooling circulation tank, the other side of the steel slag processing chamber is provided with the slag recovery mechanism, one side of the slag recovery mechanism is provided with the slag extracting tank, one side of the slag extracting tank is provided with the cooling circulation tank, the air pipeline is arranged on one side of the steel slag granulating mechanism, the other side of the air pipeline is provided with the compressed air source, one side of the compressed air source is provided with the exhaust purification tower, one side of the exhaust purification tower is provided with the exhaust pipeline, the other side of the compressed air source is provided with the observation chamber, one side of the observation chamber is provided with the electric control chamber, the compressed air source is connected with the steel slag granulating mechanism through the air pipeline, and the exhaust purification tower is connected with the steel slag processing chamber through the exhaust pipeline;
the steel slag granulating mechanism comprises a slag pot, a conveying turnover vehicle, a granulator, a tundish and a slag flowing groove, wherein the conveying turnover vehicle is arranged on one side of the slag pot;
the granulator comprises a height control mechanism, a distance control mechanism, an angle control mechanism and a supersonic gas injector, wherein the distance control mechanism is arranged on one side of the height control mechanism, the angle control mechanism is arranged on one side of the distance control mechanism, the supersonic gas injector is arranged on one side of the angle control mechanism, the height control mechanism comprises a screw rod adjusting component I and an X-shaped supporting frame, the X-shaped supporting frame is arranged on one side of the screw rod adjusting component I, the distance control mechanism comprises a screw rod adjusting component II and a connecting seat body, the connecting seat body is arranged on one side of the screw rod adjusting component II, the angle control mechanism comprises a gear rack component and a screw rod, and the screw rod is arranged on one side of the gear rack component;
the steel slag treatment chamber comprises a purification filter layer and spray water pipes, wherein the purification filter layer is arranged in the steel slag treatment chamber, and a plurality of spray water pipes are arranged on one side of the purification filter layer.
2. The liquid steel slag wind quenching granulating production line according to claim 1, wherein an air compressor is arranged on one side of the compressed air source.
3. The liquid steel slag wind quenching granulating production line according to claim 1, wherein one side of the air pipeline is provided with a regulating valve.
4. The liquid steel slag wind quenching and granulating production line according to claim 1, wherein an exhaust fan is arranged on one side of the exhaust purification tower.
5. The liquid steel slag wind quenching granulating production line according to claim 1, wherein a water supplementing pump is arranged on one side of the cooling circulation tank.
6. The liquid steel slag wind quenching granulating production line according to claim 1, wherein the slag recovery mechanism comprises a lifter and a collecting hopper, and the collecting hopper is arranged on one side of the lifter.
7. The production line of the liquid steel slag wind quenching granulation production process as claimed in claim 1, which is characterized by comprising the following steps:
step 1, gas introduction: opening the regulating valve to enable the high-pressure air in the compressed air source to flow into the supersonic air injector in the granulator;
step 2, pouring steel slag: hoisting a slag pot to a conveying turnover vehicle through an aerial crane, and conveying the turnover vehicle to a tundish working position according to a track to perform tilting slag pouring operation, wherein the temperature range of liquid steel slag is controlled to be 1400-1550 ℃, and the slag pouring speed is controlled to be 1-1.5 t/min;
step 3, granulator adjustment: according to different batches of liquid steel slag, the granulator is regulated, and the optimal granulating movement track is obtained in the working process of granulating the steel slag through a height control mechanism, a distance control mechanism and an angle control mechanism;
step 4, wind quenching and granulating: the liquid steel slag flows out through a slag flowing groove, a supersonic gas injector is opened, the air pressure is controlled to be 0.7-1.0 MPa, the liquid steel slag is rapidly cooled and granulated in the process of flying to the other side of the steel slag treatment chamber, and after falling into a slag extracting pool, the residual temperature of granulated particles is cooled through a spray water pipe;
step 5, smoke treatment: starting an exhaust fan to enable waste gas in the steel slag treatment chamber to enter an exhaust purification tower along an exhaust pipeline, and filtering and purifying smoke dust;
and step 6, cooling and collecting the granulated particles: cooling the granulated particles by a cooling circulation tank to make the temperature lower than 150 ℃, and conveying the granulated particles into a collecting hopper by a lifting machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010861108.5A CN111979366B (en) | 2020-08-25 | 2020-08-25 | Liquid steel slag air quenching granulating production line and production process thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010861108.5A CN111979366B (en) | 2020-08-25 | 2020-08-25 | Liquid steel slag air quenching granulating production line and production process thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111979366A CN111979366A (en) | 2020-11-24 |
| CN111979366B true CN111979366B (en) | 2024-02-13 |
Family
ID=73443729
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010861108.5A Active CN111979366B (en) | 2020-08-25 | 2020-08-25 | Liquid steel slag air quenching granulating production line and production process thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111979366B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115231316B (en) * | 2022-09-22 | 2022-12-20 | 山东大学 | Fluidized powder supply system and method based on waste gas and waste residue chilling steel slag |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101259991A (en) * | 2008-05-09 | 2008-09-10 | 马鞍山钢铁股份有限公司 | Wind-crushing water-cooling granulating method and device for high-temperature liquid-state steel slag, granulating steel slag and use thereof |
| CN201400690Y (en) * | 2009-04-09 | 2010-02-10 | 河北理工大学 | Supersonic gas nozzle for granulating liquid molten slags |
| CN102312024A (en) * | 2011-07-28 | 2012-01-11 | 郭荣芝 | Method and system for mechanical granulation of metallurgy slag and waste heat recovery |
| CN204608052U (en) * | 2015-05-19 | 2015-09-02 | 重庆赛迪热工环保工程技术有限公司 | A kind of tundish of slag adaptive-flow |
| CN212316150U (en) * | 2020-08-25 | 2021-01-08 | 山东盛阳工程机械有限公司 | Production line for air quenching and granulating liquid steel slag |
-
2020
- 2020-08-25 CN CN202010861108.5A patent/CN111979366B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101259991A (en) * | 2008-05-09 | 2008-09-10 | 马鞍山钢铁股份有限公司 | Wind-crushing water-cooling granulating method and device for high-temperature liquid-state steel slag, granulating steel slag and use thereof |
| CN201400690Y (en) * | 2009-04-09 | 2010-02-10 | 河北理工大学 | Supersonic gas nozzle for granulating liquid molten slags |
| CN102312024A (en) * | 2011-07-28 | 2012-01-11 | 郭荣芝 | Method and system for mechanical granulation of metallurgy slag and waste heat recovery |
| CN204608052U (en) * | 2015-05-19 | 2015-09-02 | 重庆赛迪热工环保工程技术有限公司 | A kind of tundish of slag adaptive-flow |
| CN212316150U (en) * | 2020-08-25 | 2021-01-08 | 山东盛阳工程机械有限公司 | Production line for air quenching and granulating liquid steel slag |
Non-Patent Citations (2)
| Title |
|---|
| 邵林波等.《汽车底盘构造与维修》.江西高校出版社,2013,(第1版),第188-189页. * |
| 马守谦等.《舞台机械》.机械工业出版社,1992,(第1版),第81-82页. * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111979366A (en) | 2020-11-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104357605B (en) | High-temperature slag waste heat reclaiming system and method | |
| CN108220511B (en) | Ferroalloy submerged arc furnace bottom filtering method slag treatment method | |
| CN107287368A (en) | A kind of converter slag processing unit and method | |
| CN111979366B (en) | Liquid steel slag air quenching granulating production line and production process thereof | |
| CN107354278A (en) | A kind of aerosol Quenching Production Line and its production technology for obtaining intensity adjustable automobile structure | |
| CN110694399A (en) | Method and system for treating steel slag flue gas | |
| CN112266992A (en) | Desulphurization slag treatment device and application thereof | |
| CN212316150U (en) | Production line for air quenching and granulating liquid steel slag | |
| CN111121470A (en) | Copper smelting furnace slag slow cooling system and slow cooling method thereof | |
| CN113684373A (en) | Copper smelting slag ladle heat preservation and cooling device | |
| CN217595897U (en) | Steel casting platform with movable dust removal system | |
| CN203530347U (en) | Granulation-pump-free high temperature slag water quenching system | |
| CN107858461B (en) | Method for online granulating and collecting molten titanium carbide slag | |
| CN2801791Y (en) | Treatment device for metallugical cinder | |
| CN215713211U (en) | Steel pipe sprays quenching system | |
| CN214937584U (en) | Blast furnace top pressure-equalizing gas purification and recovery device | |
| CN110195133B (en) | Converter slag treatment system and treatment method | |
| CN212974626U (en) | A smoke and dust processing apparatus for slag air quenching granulation | |
| CN210036225U (en) | Large-scale electric arc furnace dust pelletizing system | |
| CN111228937A (en) | Gas fog circulation sedimentation system for smoke and dust treatment | |
| CN208195641U (en) | A kind of molten iron casting fume extractor | |
| CN113046670A (en) | Rail-aligning type hot galvanizing production equipment | |
| CN103525958A (en) | Non-granulation-pump type high temperature slag water quenching technology and system | |
| CN217474306U (en) | Environment-friendly steelmaking ladle hot repair device | |
| CN217922165U (en) | Steel slag air quenching treatment system |
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 |