CN115044716A - Anti-bonding slag dry-type granulation heat recovery system - Google Patents
Anti-bonding slag dry-type granulation heat recovery system Download PDFInfo
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- CN115044716A CN115044716A CN202210575644.8A CN202210575644A CN115044716A CN 115044716 A CN115044716 A CN 115044716A CN 202210575644 A CN202210575644 A CN 202210575644A CN 115044716 A CN115044716 A CN 115044716A
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- 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
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- 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
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- 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
- C21B2400/024—Methods of cooling or quenching molten slag with the direct use of steam or liquid coolants, e.g. water
-
- 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
- C21B2400/05—Apparatus features
- C21B2400/052—Apparatus features including rotating parts
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B2400/00—Treatment of slags originating from iron or steel processes
- C21B2400/08—Treatment of slags originating from iron or steel processes with energy recovery
Abstract
The invention discloses an anti-bonding slag dry-type granulating heat recovery system which comprises a mechanical flow divider, a granulating unit and a heat recovery unit, wherein the granulating unit is communicated with the mechanical flow divider, the granulating unit comprises a directional granulator and a double-effect cooling bin, the directional granulator is arranged below the mechanical flow divider, the top and the bottom of the double-effect cooling bin are respectively provided with a feeding hole and a discharging hole, the directional granulator is arranged at the feeding hole of the directional granulator, and the heat recovery unit is arranged at the outlet of the double-effect cooling bin. According to the anti-bonding slag dry-type granulation heat recovery system, high-temperature slag is poured onto the directional granulator through the mechanical diverter, the high-temperature slag is broken into fine slag droplets by using centrifugal force, the fine slag droplets fly to the double-effect cooling bin in the designated direction, the fine slag droplets are cooled by water cooling and air cooling at the same time, and finally the fine slag droplets enter the heat recovery unit for cooling again, so that the bonding of the fine slag particles is prevented.
Description
Technical Field
The invention relates to the technical field of high-temperature liquid slag dry granulation waste heat recovery systems, in particular to an anti-bonding slag dry granulation heat recovery system.
Background
Blast furnace slag is a high-temperature melting byproduct (>1450 ℃) formed in an iron-making process, and the main chemical components of the blast furnace slag are metal oxides such as CaO, SiO2, A12O3 and MgO. In 2021, the yield of crude steel in China is about 10.5 hundred million tons, and the yield of the formed blast furnace slag is about 3.1 to 3.6 hundred million tons (each ton of crude steel generates about 0.3 to 0.35 ton of blast furnace slag). The heat quantity of each ton of blast furnace slag is about 60kg of standard coal, and accordingly, the heat quantity of the blast furnace slag discharged in 2021 year can be estimated to be about 1800-2200 ten thousand tons of standard coal. The utilization of the blast furnace slag waste heat resource is beneficial to promoting the energy saving and carbon reduction of the steel industry and generating objective economic and environmental benefits.
The existing blast furnace slag treatment method mostly adopts a water quenching process, namely, high-temperature liquid blast furnace slag is quenched by water to form a vitreous body, and the molten slag is broken into fine particles under the action of thermal stress in the cooling process. The blast furnace slag particles with high vitreous body content formed by the water quenching process can be further used as a partial substitute of portland cement to produce ordinary portland cement. However, the water quenching process has the disadvantages of water consumption, pollutant discharge, heat energy waste and the like. Therefore, researchers propose a dry heat recovery process to treat high-temperature liquid blast furnace slag so as to take waste heat resources and resource utilization value of the blast furnace slag into consideration.
The centrifugal granulation heat recovery technology is considered to have the most commercial prospect after decades of development, but the technology has the problems of slag particle adhesion in the implementation process, insufficient particle cooling, slag discharge resistance and the like. The problem of high temperature slag particle adhesion is one of the key bottlenecks that restrict the commercial application of the centrifugal granulation heat recovery process.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides an anti-bonding slag dry-type granulating heat recovery system, which solves the problem that fine particles are easy to bond in the process of quenching high-temperature liquid blast furnace slag to form a vitreous body.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows:
an anti-sticking slag dry granulation heat recovery system comprising:
the granulating unit comprises a directional granulator and a double-effect cooling bin, the top and the bottom of the double-effect cooling bin are respectively provided with a feeding hole and a discharging hole, the directional granulator is arranged at the feeding hole of the directional granulator, and the directional granulator is used for directionally spraying high-temperature molten slag into the double-effect cooling bin; and
and the heat recovery unit is arranged at an outlet of the double-effect cooling bin and is used for recovering and treating the cooled solid particles.
According to the anti-bonding slag dry-type granulation heat recovery system, high-temperature slag is poured into the feeding hole of the double-effect cooling bin and falls onto the directional granulator, the high-temperature slag is crushed into fine slag droplets by the directional granulator through centrifugal force, the fine slag droplets fly to the double-effect cooling bin in a specified direction, and the fine slag droplets are subjected to double cooling of water cooling and air cooling at the same time, so that the cooled fine slag droplets are not bonded together to form fine particles; and then the fine slag particles flow into a heat recovery unit for sieving and further cooling to prevent the fine slag particles from being bonded, and finally, the fine slag particles are collected and processed uniformly.
Further, still include mechanical shunt, mechanical shunt is used for shunting high temperature slag, the pelletization unit is linked together with mechanical shunt, mechanical shunt sets up the top in economic benefits and social benefits cooling storehouse, and the feed inlet in economic benefits and social benefits cooling storehouse is aimed at to the liquid outlet of mechanical shunt for high temperature slag in the mechanical shunt falls on directional granulator after the liquid outlet flows out.
Furthermore, a heat insulation layer is arranged on the mechanical flow divider, a heating module is arranged at a liquid outlet of the mechanical flow divider, a temperature sensor is arranged on the upper portion of the mechanical flow divider and used for monitoring the liquid level temperature of molten slag, a controller is further arranged on the mechanical flow divider, and a weight sensor and an actuator are arranged at the bottom of the mechanical flow divider.
Furtherly, inside spraying district and the first district that blows that is equipped with of economic benefits and social benefits cooling storehouse, the spraying district sets up in the inside bulkhead face department of economic benefits and social benefits cooling storehouse, and the spraying district sets up with directional granulator relatively, and the first district that blows sets up in the below of spraying district, and the top of economic benefits and social benefits cooling storehouse is equipped with first air outlet.
Furthermore, the heat recovery unit comprises a mechanical grate and a gravity self-flow bed, wherein an inlet of the mechanical grate is in butt joint with a discharge hole of the double-effect cooling bin, and the gravity self-flow bed is arranged at an outlet of the mechanical grate.
Furthermore, the bottom of the mechanical grate is provided with a second air blowing area, gaseous cooling media are introduced into the second air blowing area, and the top of the mechanical grate is provided with a second air outlet, so that the gaseous cooling media can be blown out from the second air outlet.
Furthermore, the mechanical grate is of a vibrating screen structure and is obliquely arranged, and the height of the inlet of the mechanical grate is higher than that of the outlet of the mechanical grate.
Furthermore, a water cooling coil is arranged in the gravity free-flow bed, the water cooling coil is arranged in the gravity free-flow bed in an S-shaped bent mode, and cooling water flows through the water cooling coil.
The invention has the beneficial effects that: according to the anti-bonding slag dry-type granulation heat recovery system, high-temperature slag is crushed into fine slag droplets by using centrifugal force through the directional granulator, and the fine slag droplets fly to the double-effect cooling bin in a specified direction; the fine slag particles are formed by cooling and solidification under the double actions of cooling air and cooling water mist in the double-effect cooling bin; the vibration and further cooling of the fine slag particles by the mechanical grate and gravity free-flowing bed prevents binding between the fine slag particles.
Drawings
In order to more clearly illustrate the embodiments of the present invention, the drawings, which are required to be used in the embodiments, will be briefly described below. The elements or parts are not necessarily drawn to scale in all figures.
FIG. 1 is a schematic flow diagram of the anti-sticking dry granulation heat recovery system of the present invention;
FIG. 2 is a schematic structural diagram of an anti-sticking dry granulation waste heat recovery system of the present invention;
FIG. 3 is a schematic diagram of the transmission of the electronic components in the mechanical diverter;
FIG. 4 is a schematic view of the operation of the directional granulator of the present invention;
reference numerals:
10-a mechanical flow divider, 20-a granulating unit, 30-a heat recovery unit, 21-a directional granulator, 211-a driving motor, 212-a rotating disc, 213-a protective cover, 22-a double-effect cooling bin, 221-a feeding hole, 222-a discharging hole, 223-a spraying area, 224-a first blowing area, 225-a first air outlet, 31-a mechanical grate, 32-a gravity free-flow bed, 33-a second blowing area, 34-a second air outlet and 35-a water-cooling coil pipe.
Detailed Description
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby.
In the description of the present invention, it is to be understood that the terms "center", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate and imply that the positions or elements referred to must have particular orientations, be constructed and operated in particular ways, and thus, are not to be construed as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
Referring to fig. 1 to 4, a thick solid line in fig. 1 represents slag, a thick dotted line represents cooling water mist, and a thin dotted line represents cooling wind.
Referring to fig. 1 and 2, the anti-adhesion slag dry granulation heat recovery system provided by the present invention includes a mechanical diverter 10, a granulation unit 20 and a heat recovery unit 30, wherein the mechanical diverter 10 is used for diverting blast furnace slag, the granulation unit 20 is communicated with the mechanical diverter 10, the mechanical diverter 10 is disposed above the granulation unit 20, such that high temperature slag at the diversion position of the mechanical diverter 10 is dumped into the granulation unit 20, and the heat recovery unit 30 is disposed at an outlet of the dual-purpose cooling bin 22 and is used for performing recovery processing on cooled solid particles. When the device is used, the high-temperature slag is poured into the granulating unit 20 through the mechanical flow divider 10, the high-temperature slag is crushed into separated fine slag droplets through the granulating unit 20, and the fine slag droplets are subjected to double cooling of water cooling and air cooling simultaneously, so that the cooled fine slag droplets are not adhered together to form fine particles; then the fine slag particles flow into the heat recovery unit 30 for sifting and further cooling to prevent the fine slag particles from adhering, and finally collected and processed uniformly.
Referring to fig. 3, an insulating layer is disposed on the mechanical diverter 10, and a heating module is disposed at a liquid outlet of the mechanical diverter 10, so that slag at the liquid outlet of the mechanical diverter 10 is heated by the heating module, thereby preventing the slag from being cooled and adhered to the liquid outlet of the mechanical diverter 10, and preventing the liquid outlet from being blocked to cause unsmooth flow of slag liquid. The upper part of the mechanical diverter 10 is provided with a temperature sensor for monitoring the molten slag liquid level temperature, the mechanical diverter 10 is also provided with a controller, and the bottom of the mechanical diverter 10 is provided with a weight sensor and an actuator.
When the high-temperature slag is discharged onto the mechanical diverter 10, the temperature sensor transmits the acquired temperature signal to the controller for analysis and processing, meanwhile, the weight sensor transmits the weight signal in the mechanical diverter 10 to the controller for analysis and processing in real time, and then the controller sends an instruction to the actuator after analyzing the signal, so that the actuator adjusts the inclination angle of the mechanical diverter 10 according to the instruction, thereby obtaining stable slag flow and preventing the high-temperature slag from dumping too much high-temperature slag into the granulating unit 20.
Referring to fig. 4, the granulation unit 20 includes a directional granulator 21 and a dual-effect cooling bin 22, the directional granulator 21 is disposed below the mechanical splitter 10, the top and the bottom of the dual-effect cooling bin 22 are respectively provided with a feeding port 221 and a discharging port 222, the directional granulator 21 is disposed at the feeding port 221 of the directional granulator 21, and the directional granulator 21 is used for directionally spraying the high-temperature molten slag into the dual-effect cooling bin 22.
Specifically, the directional granulator 21 is a semi-closed centrifugal granulation device, and utilizes centrifugal force to break high-temperature slag falling on the directional granulator 21 to form liquid drops which fly out directionally, so as to fly into the double-effect cooling bin 22; a spray area 223 and a first air blowing area 224 are arranged inside the double-effect cooling bin 22, the spray area 223 is arranged on the bin wall surface inside the double-effect cooling bin 22, the spray area 223 and the directional granulator 21 are arranged oppositely, and the bin wall surface inside the double-effect cooling bin 22 can be a heat insulation wall surface or a water cooling wall surface, so that fine slag liquid drops are prevented from being adhered to the bin wall surface after impacting the bin wall surface; the first air blowing area 224 is arranged below the spraying area 223, and a first air outlet 225 is formed in the top of the double-effect cooling bin 22. Spray zone 223 can spout cooling water smoke, and first district 224 that blows can blow out the cooling air, and the cooling air blows towards aerial tiny slag liquid drop, and the cooling air can be blown off from first air outlet 225 moreover to take away the inside heat in economic benefits and social benefits cooling bin 22, reached radiating purpose.
When the high-temperature slag falls onto the directional granulator 21 in a rotating state, the high-temperature slag is thrown away in a designated direction by the aid of the acting force of centrifugal force, after the high-temperature slag flies out of the directional granulator 21, the high-temperature slag is broken and separated into small slag droplets, cooling air is blown out from the first air blowing area 224 towards the small slag droplets flying in the air at the moment, primary cooling is carried out, the small slag droplets are prevented from being bonded together, then the small slag droplets impact the wall surface inside the double-effect cooling bin 22, cooling water mist sprayed from the spraying area 223 carries out secondary cooling on the small slag droplets, the small slag droplets are solidified to form small slag particles, and the small slag particles are rebounded by the aid of impact force, so that the bonding of the small slag particles is further prevented.
Preferably, the number of the directional granulators 21 is plural, the number of the directional granulators 21 can be increased according to the handling capacity of the high-melting slag, and the arrangement of the plural directional granulators 21 can accelerate the speed of the directional diversion of the high-temperature slag. The directional granulator 21 comprises a driving motor 211, a rotary disc 212 and a protective cover 213, the driving motor 211 is arranged in a feeding hole 221 of the double-effect cooling bin 22, an output shaft of the driving motor 211 is fixedly connected with the rotary disc 212 through a rotary rod, and the protective cover 213 is covered on one side of the rotary disc 212 far away from the wall surface of the middle bin of the double-effect cooling bin 22. When the device is used, the driving motor 211 is started to drive the turntable 212 to rotate, and when the high-temperature slag falls on the top surface of the turntable 212, the centrifugal force generated by the rotation of the turntable 212 is utilized to enable the high-temperature slag to fly out in the designated direction.
As shown in fig. 1 and 2, the heat recovery unit 30 comprises a mechanical grate 31 and a gravity free-flow bed 32, wherein an inlet of the mechanical grate 31 is butted with a discharge port 222 of the double-effect cooling bin 22, and the gravity free-flow bed 32 is arranged at an outlet of the mechanical grate 31. Specifically, the bottom of the mechanical grate 31 is provided with a second blowing area 33, a gaseous cooling medium is introduced into the second blowing area 33, the gaseous cooling medium can be air, flue gas or other gaseous substances with a cooling effect, and the top of the mechanical grate 31 is provided with a second air outlet 34, so that the gaseous cooling medium can be blown out from the second air outlet 34, convection can be formed with the second blowing area 33, heat of the mechanical grate 31 is taken away, and a rapid cooling effect is achieved. The mechanical grate 31 is of a vibrating screen structure and vibrates with fine slag particles falling to the mechanical grate 31 to avoid the accumulation of the fine slag particles; the vibrating screen structure is provided with screen holes, so that the gaseous cooling medium can pass through the vibrating screen structure conveniently.
When the fine slag particles are discharged to the mechanical grate 31 from the discharge port 222 of the double-effect cooling bin 22, the fine slag particles flowing to the mechanical grate 31 are always in vertical motion by utilizing the vibration of the mechanical grate 31, so that the fine slag particles are separated from each other and have gaps, and meanwhile, the cooling air is blown out from the second air blowing area 33, so that the cooling air is blown into the space between the fine slag particles, the fine slag particles are further cooled, and the bonding is prevented.
In this embodiment, the mechanical grate 31 is disposed in an inclined manner, and the height of the inlet of the mechanical grate 31 is higher than the height of the outlet of the mechanical grate 31, so that the mechanical grate 31 can move fine slag particles to the outlet of the mechanical grate 31 while vibrating the fine slag particles. The mechanical grate 31 adopts various movement forms, and the movement forms can be reciprocating forward pushing, reciprocating backward pushing, rolling, bidirectional backward moving and the like.
In this embodiment, a water-cooling coil 35 is disposed in the gravity free flow bed 32, the water-cooling coil 35 is disposed in the gravity free flow bed 32 in an S-shaped bent manner, a water inlet end of the water-cooling coil 35 is located at the bottom of the gravity free flow bed 32 and is used for flowing cooling water, a water outlet end of the water-cooling coil 35 is located at the top of the gravity free flow bed 32 and is used for flowing cooling water out, and the water-cooling coil 35 circulates cooling water. When the fine slag particles flow from the inlet of the gravity free-flow bed 32 to the outlet, the fine slag particles flow around the water-cooling coil 35, so that the water-cooling coil 35 and the fine slag particles generate heat exchange, the heat of the fine slag particles is taken away, and the fine slag particles are cooled down to form mutually separated particles.
The working principle of the invention is as follows:
(1) firstly, discharging high-temperature slag onto a mechanical diverter 10, monitoring by a weight sensor and a temperature sensor arranged on the mechanical diverter 10 to obtain the information of the quality and the temperature of the slag in the mechanical diverter 10, transmitting the signals to a controller for analysis, and when the outflow requirement is met, transmitting an instruction to an actuator by the controller to enable the actuator to start to act, and pouring the high-temperature slag into a directional granulator 21;
(2) after falling onto the surface of the directional granulator 21, the high-temperature molten slag is broken into fine molten slag droplets under the action of centrifugal force of the directional granulator 21, and the molten slag droplets fly to move to the double-effect cooling bin 22 in a specified direction;
(3) fine slag droplets are subjected to primary cooling by cooling air blown out from the first air blowing area 224 in the flying process of the fine slag droplets in the double-effect cooling bin 22, and then are subjected to secondary cooling by cooling water mist sprayed out from the spraying area 223 in the process of impacting the slag droplets on the wall surface area of the bin body, so that fine slag particles are formed after solidification;
(4) the fine slag particles are discharged from a discharge port 222 of the double-effect cooling bin 22, further pushed onto the mechanical grate 31, vibrated by the mechanical grate 31, simultaneously blown by the gaseous cooling medium from the second blowing area 33, further cooled, finally discharged after entering the gravity free-flow bed 32 to exchange heat with the water-cooling coil 35.
The invention has the beneficial effects that: the anti-bonding slag dry granulation heat recovery system utilizes centrifugal force to crush high-temperature slag into fine slag liquid drops through the directional granulator 21, and the fine slag liquid drops fly to the double-effect cooling bin 22 in a specified direction; the fine slag particles are formed by cooling and solidification under the double actions of cooling air and cooling water mist in the double-effect cooling bin 22; the vibration and further cooling of the fine slag particles by the mechanical grate 31 and gravity free-flowing bed 32 prevents binding between the fine slag particles.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention, and they should be construed as being included in the following claims and description.
Claims (9)
1. An anti-sticking slag dry granulation heat recovery system, comprising:
the granulating unit comprises a directional granulator and a double-effect cooling bin, the top and the bottom of the double-effect cooling bin are respectively provided with a feeding hole and a discharging hole, the directional granulator is arranged at the feeding hole of the directional granulator, and the directional granulator is used for directionally spraying high-temperature molten slag into the double-effect cooling bin; and
and the heat recovery unit is arranged at an outlet of the double-effect cooling bin and is used for recovering and treating the cooled solid particles.
2. The anti-sticking molten slag dry granulation heat recovery system according to claim 1, wherein: still include mechanical shunt, mechanical shunt is used for shunting high temperature slag, the pelletization unit is linked together with mechanical shunt, mechanical shunt sets up in the top in economic benefits and social benefits cooling storehouse, and the feed inlet in economic benefits and social benefits cooling storehouse is aimed at to the liquid outlet of mechanical shunt for high temperature slag in the mechanical shunt falls on directional granulator after the liquid outlet flows out.
3. The anti-sticking slag dry granulation heat recovery system according to claim 2, wherein: the mechanical shunt is provided with a heat insulation layer, a heating module is arranged at a liquid outlet of the mechanical shunt, a temperature sensor is arranged at the upper part of the mechanical shunt and used for monitoring the liquid level temperature of molten slag, a controller is further arranged on the mechanical shunt, and a weight sensor and an actuator are arranged at the bottom of the mechanical shunt.
4. The anti-sticking molten slag dry granulation heat recovery system according to claim 1 or 2, characterized in that: the spray zone and the first air blowing zone are arranged in the double-effect cooling bin, the spray zone is arranged on the bin wall surface in the double-effect cooling bin, the spray zone is arranged opposite to the directional granulator, the first air blowing zone is arranged below the spray zone, and a first air outlet is formed in the top of the double-effect cooling bin.
5. The anti-sticking molten slag dry granulation heat recovery system according to claim 4, wherein: the directional granulator is a semi-closed centrifugal granulation device, and the wall surface of the bin inside the double-effect cooling bin can be a heat insulation wall surface or a water cooling wall surface.
6. The anti-sticking molten slag dry granulation heat recovery system according to claim 1 or 2, characterized in that: the heat recovery unit comprises a mechanical grate and a gravity self-flow bed, wherein an inlet of the mechanical grate is in butt joint with a discharge hole of the double-effect cooling bin, and the gravity self-flow bed is arranged at an outlet of the mechanical grate.
7. The anti-sticking molten slag dry granulation heat recovery system according to claim 6, wherein: the bottom of the mechanical grate is provided with a second air blowing area, a gaseous cooling medium is introduced into the second air blowing area, and the top of the mechanical grate is provided with a second air outlet, so that the gaseous cooling medium can be blown out from the second air outlet.
8. The anti-sticking molten slag dry granulation heat recovery system according to claim 7, wherein: the mechanical grate is of a vibrating screen structure, the mechanical grate is arranged in an inclined mode, and the height of the inlet of the mechanical grate is higher than that of the outlet of the mechanical grate.
9. The anti-sticking molten slag dry granulation heat recovery system according to claim 6, wherein: the gravity self-flowing bed is internally provided with a water-cooling coil pipe, the water-cooling coil pipe is arranged in the gravity self-flowing bed in an S-shaped bent mode, and cooling water flows through the water-cooling coil pipe.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210575644.8A CN115044716A (en) | 2022-05-24 | 2022-05-24 | Anti-bonding slag dry-type granulation heat recovery system |
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| CN202210575644.8A CN115044716A (en) | 2022-05-24 | 2022-05-24 | Anti-bonding slag dry-type granulation heat recovery system |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007284263A (en) * | 2006-04-12 | 2007-11-01 | Nippon Steel Corp | Method and apparatus for treating molten blast furnace slag |
| CN101660014A (en) * | 2009-09-24 | 2010-03-03 | 中钢集团鞍山热能研究院有限公司 | Molten blast furnace slag sensible heat recovery method and device |
| CN106282447A (en) * | 2016-09-21 | 2017-01-04 | 重庆大学 | There is the slag dry granulation waste-heat recovery device of self-regulation and Anti-slagging function |
-
2022
- 2022-05-24 CN CN202210575644.8A patent/CN115044716A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007284263A (en) * | 2006-04-12 | 2007-11-01 | Nippon Steel Corp | Method and apparatus for treating molten blast furnace slag |
| CN101660014A (en) * | 2009-09-24 | 2010-03-03 | 中钢集团鞍山热能研究院有限公司 | Molten blast furnace slag sensible heat recovery method and device |
| CN106282447A (en) * | 2016-09-21 | 2017-01-04 | 重庆大学 | There is the slag dry granulation waste-heat recovery device of self-regulation and Anti-slagging function |
Non-Patent Citations (1)
| Title |
|---|
| 吕义文等: "高温液态熔渣离心粒化余热回收技术", 中国基础科学, vol. 22, no. 02, pages 28 - 35 * |
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