CN101871025B - Metallurgical molten slag dry-type processing device and processing method thereof - Google Patents
Metallurgical molten slag dry-type processing device and processing method thereof Download PDFInfo
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- CN101871025B CN101871025B CN2010102147036A CN201010214703A CN101871025B CN 101871025 B CN101871025 B CN 101871025B CN 2010102147036 A CN2010102147036 A CN 2010102147036A CN 201010214703 A CN201010214703 A CN 201010214703A CN 101871025 B CN101871025 B CN 101871025B
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- 239000002893 slag Substances 0.000 title claims abstract description 162
- 238000012545 processing Methods 0.000 title claims abstract description 42
- 238000003672 processing method Methods 0.000 title abstract 2
- 238000001816 cooling Methods 0.000 claims abstract description 82
- 239000002245 particle Substances 0.000 claims abstract description 17
- 238000012423 maintenance Methods 0.000 claims abstract description 7
- 230000001174 ascending effect Effects 0.000 claims abstract description 4
- 238000005469 granulation Methods 0.000 claims description 61
- 230000003179 granulation Effects 0.000 claims description 61
- 239000010802 sludge Substances 0.000 claims description 57
- 238000000034 method Methods 0.000 claims description 30
- 239000003818 cinder Substances 0.000 claims description 29
- 238000001035 drying Methods 0.000 claims description 25
- 230000008676 import Effects 0.000 claims description 11
- 230000001351 cycling effect Effects 0.000 claims description 7
- 230000004523 agglutinating effect Effects 0.000 claims description 6
- 238000005243 fluidization Methods 0.000 claims description 3
- 238000009413 insulation Methods 0.000 claims description 3
- 238000011144 upstream manufacturing Methods 0.000 claims description 3
- 238000003723 Smelting Methods 0.000 abstract description 5
- 238000007599 discharging Methods 0.000 abstract description 3
- 238000004064 recycling Methods 0.000 abstract description 3
- 238000009434 installation Methods 0.000 abstract 1
- 238000007789 sealing Methods 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 27
- 238000005516 engineering process Methods 0.000 description 13
- 238000010791 quenching Methods 0.000 description 6
- 238000011084 recovery Methods 0.000 description 6
- 239000002918 waste heat Substances 0.000 description 6
- 230000000171 quenching effect Effects 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 238000013461 design Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 239000004568 cement Substances 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
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- 238000009833 condensation Methods 0.000 description 1
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- 238000010586 diagram Methods 0.000 description 1
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- 238000011173 large scale experimental method Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 238000010310 metallurgical process Methods 0.000 description 1
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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
- C21B2400/026—Methods of cooling or quenching molten slag using air, inert gases or removable conductive bodies
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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
- C21B2400/05—Apparatus features
- C21B2400/062—Jet nozzles or pressurised fluids for cooling, fragmenting or atomising 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
- C21B2400/05—Apparatus features
- C21B2400/066—Receptacle features where the slag is treated
- C21B2400/072—Tanks to collect the slag, e.g. water tank
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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
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- 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
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- 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
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Abstract
The invention discloses a metallurgical molten slag dry-type processing device and a molten slag dry-type processing method. The processing device comprises a molten slag lead-in unit and a processing furnace, wherein the processing furnace comprises a granulating cooling nozzle, a multi-section fluidized bed device for secondarily cooling hot slag particles, a slag discharging pipe which is arranged nearby a multi-section fluidized bed top layer fluidized plate and is used for accidental maintenance and a rotary sealing valve which is arranged at a discharging outlet below the multi-section fluidized bed; in the processing furnace, the rapid granulating and cooling of the molten slag are completed inside a drum area on the upper part of the furnace body, the secondary cooling of the falling hot slag particles is completed through multi-section circular heat exchange with the ascending gas from the multi-section fluidized bed inside the multi-section fluidized bed, so the rapid granulating and the cooling of the molten slag as well as the secondary cooling of the hot slag particles can be continuously completed inside one processing furnace. The dry-type processing device reduces the heat loss of the system, improves the total recycling efficiency of the molten slag heat, and improves the installation feasibility near the main smelting device since the land occupation area is reduced.
Description
Technical field
The present invention relates to a kind of metallurgical cinder dry process device, it is used for metallurgical cinder is carried out the granulation processing under cooling to reach the purpose of recycling the slag sensible heat.In addition, the invention still further relates to a kind of metallurgical cinder dry treatment method.
Background technology
A large amount of slags that existing metallurgical process produces adopt water quenching technology to handle usually, and except that a large amount of precious water resource of needs consumption, the sensible heat major part in the slag is scattered and disappeared along with evaporation of water, so the sensible heat in the slag does not obtain recycling basically.In order to recycle the sensible heat in the high-temperature slag, and avoided the waste of water resources, people's various dry process technologies of slag that begin one's study since the eighties.Since the thermal conductivity of metallurgical cinder very low (＜1W/mk); For improving the sensible heat organic efficiency and guaranteeing that the vitrifying rate of processing back slag satisfies the requirement as cement raw material; At first must slag be broken into fine droplet and realize rapid condensation to increase heat transfer surface area, the waste heat of slag drop or solid granulates is recovered utilization through thermal radiation or heat conducting mode.According to the difference of granulating method, dry process can be divided into wind quench shotting, rotary drum shotting and centrifugal granulation method.
The wind shotting of quenching
The eighties in 20th century; The wind method blast furnace slag sensible heat recovery technology of quenching has been developed in Japan six big steel companies (Nippon Steel, NKK, Kawasaki Steel, Sumitomo Metal, Kobe Steel, Ltd, day new system iron) joint study, has successively carried out the test of infrastest and large scale experiment factory.Its technical process is: the granulation zone that 1400～1600 ℃ blast furnace slags is imported a horizontal wind-tunnel through slag runner; When slag flows out from slag runner is terminal; High-speed air flow by the gas blower ejection from the bottom dispels, granulation; The major part of slag particle with wind-tunnel inwall or the water-cooled breaker plate bump that in wind-tunnel, is provided with after, fall into the wind-tunnel bottom with about 1050 ℃ temperature.In the process that falls; The air that slag is blown into from the wind-tunnel bottom further cools off, and is discharged from outside the wind-tunnel with about 800 ℃ temperature afterwards, utilizes hot sieve apparatus that the big particle diameter separate particles in slag particle is removed; To sieve down slag particle sends into hot aggregate bin and collects; In secondary heat exchange device multiple stage fluidized-bed, slag particle is cooled to about 150 ℃ then, in wind-tunnel and secondary heat exchange device, the sensible heat that cooling air and slag heat exchange obtain can be used as and produces steam or generating.Above technology is finally failed industriallization, and the one, because total heat recovery efficiency only has an appointment 62%.Owing between horizontal wind-tunnel and secondary heat exchange device, also have hot sieve apparatus and mechanical transport system, add that wind-tunnel part inwall and breaker plate all adopt water-cooling pattern, the thermosteresis of system own is big; The 2nd, because granulation cooling wind-tunnel adopts horizontal type structure, so equipment is huge, arranges that at a lot of blast furnaces scene the feasibility of installing is low.
The rotary drum shotting
Rotary drum dry type shotting is also proposed last century 70, the eighties by the Japanese, is divided into two kinds of forms of single-drum and twin drum.The technology of single-drum granulation or single-wheel shotting is: slag falls to the swing roller surface and is thrown out of also granulation, sends into abundant heat exchange of solid dielectric fluidized-bed and air and medium and cooling, and the air after the heat exchange is sent to waste heat boiler and reclaims heat.The technology of twin drum or rotary drum shotting is: melt cinder is cooled to the slag film through drum surface, becomes steam after the medium heat absorption in the drum, after heat exchanger cooling, recycles, and reclaims heat and is used for steam turbine generation.Above technology does not have industriallization yet; Concerning the single-drum granulation; The one, because the speed of cooling after single-drum slag granulation is too slow, so the vitrifying rate does not reach the requirement (＞95%) as the cement Additive, the finished product slag can only be used as the very low aggregate of added value.Though the twin drum granulation has solved the problem of vitrifying rate, owing to the waste heat of warm sludge grain fails fully to reclaim, so the total yield of dross sensible heat is less than 40%; The 2nd, the runner that this technology is used work under the high temperature rugged environment for a long time, even if the medium cooling protection is arranged, its maintenance and running cost are all very high; The 3rd, heat recovery efficiency low (the single-drum granulation is about 60%, and the twin drum granulation is 40%), as considering the investment of waste heat boiler and generating set, the time of investment repayment is oversize.
The centrifugal granulation method
The eighties in last century; Japanese and the British notion that proposes centrifugal pan and Centrifuge Cup granulation respectively, its technology is slag to be flow into through slag chute carry out the drop that granulation forms flight in rotating disk or the revolving cup, drop is through cool off and solidify fast; The warm sludge grain of collecting further cools off through two-step fluidized bed the time; Be installed in boi1er tube on the fluidized-bed through heat exchange, collect the waste heat in the slag, produce warm air or steam.Recently; Under the subsidy of the worker of section of Australian Union tissue (CISRO) and iron and steel enterprise; The pilot plant that the centrifugal pan pelletizing technology has obtained further research and set up maximum slag treatment capacity is 5kg/min; Its technology is slag to be flowed into one adopt the dry type pelletizer granulation of centrifugal pan to generate tiny drop; Further cooling is to reclaim corresponding waste heat in being collected in heat exchanger through being quickly cooled to 900 ℃ of warm sludge grains that obtain, and final deslagging temperature is 25～50 ℃, and the exit hot air temperature it is said and can reach 600 ℃.The centrifugal granulation method fails so far to realize that industrialized reason is that centrifugal pan or the Centrifuge Cup that is adopted belongs to the mechanical moving element that rapid wear is prone to consumption; Work under the high temperature rugged environment for a long time; Even if use water-cooled; Its safety is difficult to reach and the requirement of maintenance synchronously of main body smelting equipment, and maintenance and running cost are all higher.Because the continuity that metallurgical works main body smelting equipment is produced, and the characteristics that the discharging amount of having of slag is big, the gap is short, the dry process device will have the basis that just possesses industrial applications with the same safety of main body smelting equipment at least.
Summary of the invention
The objective of the invention is to the wind studied the shortcoming that heat recovery efficiency is low and occupation area of equipment is big that shotting dry process device exists of quenching at present; Through more rational dry process device and treatment process, the organic efficiency that improves dross sensible heat also reduces floor space.
One aspect of the present invention has proposed a kind of metallurgical cinder dry process device, comprising: the processing stove that is used to make high-temperature slag granulation, cooling and obtains high temperature air; Be used for high-temperature slag is imported to the slag importing unit of said processing stove; Wherein said processing stove comprises: body of heater; It comprises: adopt the shaft of vertical tank structure and will import the slag inlet that unitary high-temperature slag imports to said processing stove shaft middle part from said slag, the shaft of handling the slag inlet top of stove is the bulge shape; Granulation and cooling jet; Be positioned at the below of said slag inlet and center on said slag inlet; The high-speed air flow that blows out from this granulation and cooling jet will get into the slag of handling stove with slag curtain form and blow in the top shaft of handling stove to form the warm sludge fountain; Slag be granulated into the warm sludge grain fast and with the surface cool of warm sludge grain to the agglutinating temperature does not take place, thereby in this handles the top shaft of stove, accomplish the quick granulation and the process of cooling of slag; Multiple stage fluidized-bed device; It is positioned at the bottom of handling stove; The warm sludge grain that falls from the top of handling stove is with the multiple stage fluidized-bed ascending gas that comes out carries out counterflow heat exchange from the bottom; And in multiple stage fluidized-bed, accomplish the exchange of multistage cycling hot, thereby, this accomplishes the secondary cooling of warm sludge grain in handling stove.Wherein, the cooling of the secondary of the quick granulation of slag and cooling and warm sludge grain is accomplished in said same processing stove continuously.In a kind of embodiment, said processing stove is vertical structure.
Preferably, said metallurgical cinder dry process device also comprises first gas blower, and being used to granulation and cooling jet provides pressurized air with quick granulation of slag and cooling.
Preferably, said metallurgical cinder dry process device also comprises second gas blower, is used for being provided for to multiple stage fluidized-bed bottom the pressurized air of warm sludge grain secondary cooling usefulness.
Preferably, said metallurgical cinder dry process device also comprises and is positioned near the scum pipe that break down maintenance is used the top layer fluidisation plate to be furnished with twice water-cooled slide valve at the vertical section of scum pipe.
Preferably, said metallurgical cinder dry process device also comprises the rotary seal valve that is positioned at multiple stage fluidized-bed below cooling slag particle outlet position, is used for cooled slag particle is discharged.
Preferably; Said metallurgical cinder dry process device also comprises the high-temperature gas flue; Be positioned at the furnace roof portion that handles, the high-temperature gas that the cooling of slag granulation obtains mixes the back with the high-temperature gas that the cooling of warm sludge grain secondary obtains on processing stove top and discharges through said high-temperature gas flue.
Preferably, said slag imports the unit and comprises: slag ladle is used to hold high-temperature slag; And the slag chute that is coated with the insulation cover plate, be positioned at the bottom of said slag ladle, and the guiding high-temperature slag flows and gets in the slag inlet at said processing stove shaft middle part with slag curtain form.
The present invention has proposed a kind of metallurgical cinder dry treatment method on the other hand, comprising: (a): the high-temperature slag guiding is got into handle in the stove; (b): the high-speed air flow that is blown out by the granulation cooling jet will get into the high-temperature slag of handling stove and blow to the top shaft of handling stove forming the warm sludge fountain, and slag is granulated into warm sludge grain and warm sludge grain fast and is cooled to the surface agglutinating temperature does not take place; (c): make warm sludge grain that above-mentioned steps (b) produces at dropping process with the multiple stage fluidized-bed upstream that comes out carries out counterflow heat exchange from the bottom, and multiple stage fluidized-bed in, accomplish the exchange of multistage cycling hot, cool off with the secondary of accomplishing the warm sludge grain.Wherein, the secondary cooling step (c) of the quick granulation of slag and cooling step (b) and warm sludge grain is accomplished in said same processing stove continuously.
Preferably, also comprise step (d): the high-temperature gas that produces respectively through above-mentioned steps (b) and step (c) handle that stove top is mixed and from the top flue discharge.
Compare with existing metallurgical cinder dry process device and treatment process, the device that the present invention proposes has following significant advantage and effect.
Slag cools off with quick with the abundant granulation of high-speed air flow that slag curtain form entering granulation district helps being blown out by the granulation cooling jet; And the heat exchanger time that airflow has not only prolonged slag to shaft top winding-up the warm sludge grain that produces and air-flow fully is cooled to surperficial inadherent temperature with assurance warm sludge grain; Can also utilize the space below the granulation district that the warm sludge grain that falls is carried out the secondary cooling with multiple stage fluidized-bed form; Thereby in same stove, realize the quick granulation cooling of slag and the secondary cooling of warm sludge grain; Avoided slag also needing independent secondary heat exchanger and corresponding warm sludge grain delivery system after granulation and the cooling fast; Reduced the thermosteresis of system to greatest extent, the heat recovery efficiency of expectation can reach 80%, is on close level with present sophisticated dry coke quenching auxiliary.
The present invention proposes slag is flowed to high-speed air the method for shaft top winding-up; Not only effectively the quick granulation of slag and cooling and secondary cooling process different zones in same stove are accomplished respectively on the technology; Particularly; The quick granulation speed cooling of slag occurs in the top shaft of the bulge shape of handling stove and secondary cooling process occurs in the bottom of handling stove, and has overcome industrial restriction of actual slag runner apart from floor level, makes the design more reasonable of dry processing device through utilizing space more than the slag runner line; Reduced the requirement of equipment, improved the feasibility that whole device is installed in industry spot floor space.
Description of drawings
Fig. 1 is a kind of synoptic diagram of embodiment of structure and the working method of explanation metallurgical cinder dry process device of the present invention.
Fig. 2 is the schema that shows a kind of embodiment of metallurgical cinder dry treatment method of the present invention.
Embodiment
In conjunction with accompanying drawing and with reference to the preferred embodiments of the present invention; Those skilled in the art can understand the application's further open, purpose, advantage and aspect better; These given accompanying drawings and embodiment are for illustrative purposes, rather than the protection domain of invention is limited.
Specify exemplary embodiment of the present invention below in conjunction with accompanying drawing.Identical Reference numeral is represented identical parts in the accompanying drawing.As shown in Figure 1, the present invention proposes a kind of metallurgical cinder dry process device, comprising: the processing stove 1 that is used to make high-temperature slag granulation, cooling and obtains high temperature air; And be used for high-temperature slag is imported to the slag importing unit 2,3 of handling stove 1.Wherein said processing stove 1 comprises: body of heater 9, and it comprises: adopt the shaft of vertical tank structure and will import the slag inlet that unitary high-temperature slag imports to the shaft middle part of handling stove from slag, the shaft of handling the slag inlet top of stove is the bulge shape; Granulation and cooling jet 4; Be positioned at the below of slag inlet and center on the slag inlet; The high-speed air flow that blows out from this granulation and cooling jet will get into the slag of handling stove with slag curtain form and blow in the top shaft of handling stove to form the warm sludge fountain; Slag is granulated into warm sludge grain and warm sludge grain fast and is cooled to the surface agglutinating temperature does not take place, thereby in this handles the top shaft of stove 1, accomplishes the quick granulation and the process of cooling of slag; Multiple stage fluidized-bed device 6; Be positioned at the bottom of handling stove; The warm sludge grain that falls from the top shaft of handling stove is with the multiple stage fluidized-bed ascending gas that comes out carries out counterflow heat exchange from the bottom; And in multiple stage fluidized-bed, accomplish the exchange of multistage cycling hot, thereby, this accomplishes the secondary cooling of warm sludge grain in handling stove 1.According to metallurgical cinder dry process device of the present invention, the cooling of the secondary of the quick granulation of slag and cooling and warm sludge grain is accomplished in same processing stove continuously.
As shown in Figure 1, slag imports the unit and comprises: slag ladle 2 is used to hold high-temperature slag; And slag chute 3, be positioned at the bottom of slag ladle, and guide in the mobile slag inlet of high-temperature slag with slag curtain form entering processing stove.In the above-described embodiments, this device has adopted a slag ladle, but the present invention is not limited only to this.For example to handling stove 1 slag is provided continuously and stably, can adopts one to be equipped with two slag ladles of a usefulness for guaranteeing.In a kind of preferred embodiment, slag chute 3 is coated with the insulation cover plate.
In the above-described embodiment; Referring to Fig. 1; Metallurgical cinder dry process device of the present invention also comprises first gas blower 5; Being used to granulation and cooling jet provides pressurized air with quick granulation of slag and cooling, and second gas blower 7, is used for being provided for to multiple stage fluidized-bed bottom the pressurized air of warm sludge grain secondary cooling usefulness.Preferably, this device also comprises and is positioned near the scum pipe 8 that break down maintenance is used the top layer fluidisation plate to be furnished with twice water-cooled slide valve at the vertical section of scum pipe.Referring to Fig. 1, this device also comprises the rotary seal valve 11 that is positioned at multiple stage fluidized-bed below cooling slag particle outlet position, is used for cooled slag particle is discharged.
Refer again to Fig. 1, this device also comprises high-temperature gas flue 11, is positioned at the furnace roof portion that handles, and the high-temperature gas that the cooling of slag granulation obtains mixes the back with the high-temperature gas that the cooling of warm sludge grain secondary obtains on processing stove top and discharges through high-temperature gas flue 11.High-temperature gas flue 11 expellant gas are sent to follow-up dust-removal system 12 and are treated as available high quality thermal source.Dust-removal system can be carried out corresponding preferred design according to the purposes of high-temperature gas.For example, be used for producing steam with residual heat boiler for exchanging heat like high-temperature gas, the mode of employing cyclone dust removal can satisfy the requirement of this purposes.
The dry treatment method of the metallurgical cinder of said apparatus is used in 2 detailed descriptions with reference to the accompanying drawings.As shown in Figure 2, according to metallurgical cinder dry treatment method of the present invention, a kind of preferred embodiment comprise the steps: (a): the high-temperature slag guiding is got in the processing stove 1; (b): the high-speed air flow that is blown out by granulation cooling jet 4 will get into the high-temperature slag of handling stove 1 and blow to the top shaft of handling stove forming the warm sludge fountain, and slag is granulated into warm sludge grain and warm sludge grain fast and is cooled to the surface agglutinating temperature does not take place; (c): the multiple stage fluidized-bed upstream that comes out carries out counterflow heat exchange in dropping process and bottom to make warm sludge grain that above-mentioned steps (b) produces, and in multiple stage fluidized-bed, carries out the exchange of multistage cycling hot, cools off with the secondary of accomplishing the warm sludge grain.Wherein the cooling of the secondary of the quick granulation of slag and cooling and warm sludge grain is accomplished in same processing stove continuously.Preferably, this method also comprises step (d): the high-temperature gas that produces respectively through above-mentioned steps (b) and step (c) handle that stove top is mixed and from the top flue discharge.High-temperature gas flue 11 expellant gas are sent to follow-up dust-removal system 12 and are treated as available high quality thermal source.Dust-removal system can be carried out corresponding preferred design according to the purposes of high-temperature gas.For example, be used for producing steam with residual heat boiler for exchanging heat like high-temperature gas, the mode of employing cyclone dust removal can satisfy the requirement of this purposes.
Above-mentioned treatment process can adopt foregoing treatment unit to realize.For example, above-mentioned high temperature furnace slag importing step comprises that the slag chute 3 that the high-temperature slag process that is contained in the slag ladle 2 is positioned at the slag ladle bottom is with slag curtain form guiding entering processing stove 1.In addition, preferably, carry out before the multistage counter current heat exchange, also comprise through refractory vibrating screen to remove the step of macrobead slag with multiple stage fluidized-bed form.
Referring to Fig. 2,, provide pressurized air with quick granulation of slag and cooling to granulation and cooling jet through first gas blower 5.Through second gas blower 7, be provided for the pressurized air of warm sludge grain secondary cooling usefulness to multiple stage fluidized-bed bottom.Through being positioned at the rotary seal valve 10 of multiple stage fluidized-bed below cooling slag particle outlet position, cooled slag particle is discharged.
Because the quick granulation of slag is accomplished with cooling bulge district in handling stove; The secondary cooling of the warm sludge grain that falls is through carrying out counterflow heat exchange with the multiple stage fluidized-bed air-flow that comes out to rise and in multiple stage fluidized-bed, carrying out the exchange of multistage cycling hot and accomplish; Thereby realize the quick granulation cooling of slag and all completion continuously in same processing stove of secondary refrigerative step of warm sludge grain; Need the warm sludge grain be transported to another this middle-chain of independent secondary heat exchanger; Reduce the thermosteresis of system to greatest extent, improved the overall recovery efficiency of dross sensible heat.In addition, handle stove and adopt vertical structure, also reduced floor space, improved the feasibility that the dry process device is installed near the main body smelting equipment.
Although exemplary embodiments of the present invention is illustrated, obviously those of ordinary skill is appreciated that under the situation that does not deviate from spirit of the present invention and principle and can changes, its scope claims with and equivalent in limit.
Claims (7)
1. metallurgical cinder dry process device comprises:
The processing stove (1) that is used to make high-temperature slag granulation, cooling and obtains high temperature air;
Be used for high-temperature slag is imported to the slag importing unit (2,3) of said processing stove (1), wherein said processing stove (1) comprising:
Body of heater (9), it comprises: adopt the shaft of vertical tank structure and will import unitary high-temperature slag from said slag to import to the slag inlet that is positioned at said processing stove shaft middle part, wherein, the shaft of the slag of said processing stove inlet top is the bulge shape;
Granulation and cooling jet (4); Be positioned at the below of said slag inlet and center on said slag inlet; The high-speed air flow that blows out from this granulation and cooling jet will get into the slag of handling stove with slag curtain form and blow in the top shaft of handling stove to form the warm sludge fountain; Slag is granulated into warm sludge grain and warm sludge grain fast and is cooled to the surface agglutinating temperature does not take place, thus in this handles the top shaft of stove (1) the quick granulation and the process of cooling of completion slag;
Multiple stage fluidized-bed device (6); Be positioned at the bottom of handling stove; The warm sludge grain that falls from the top shaft of handling stove with carry out counterflow heat exchange from the said multiple stage fluidized-bed ascending gas that comes out; And in multiple stage fluidized-bed, accomplish the exchange of multistage cycling hot, thereby, this accomplishes the secondary cooling of warm sludge grain in handling stove (1);
Wherein, the cooling of the secondary of the quick granulation of slag and cooling and warm sludge grain is accomplished in said same processing stove continuously, need the warm sludge grain be transported to another this middle-chain of independent secondary heat exchanger;
It is characterized in that said metallurgical cinder dry process device also comprises first gas blower (5), being used to granulation and cooling jet provides pressurized air with quick granulation of slag and cooling; Also comprise second gas blower (7), be used for being provided for the pressurized air of warm sludge grain secondary cooling usefulness to said multiple stage fluidized-bed bottom.
2. metallurgical cinder dry process device according to claim 1 is characterized in that, also comprises being positioned at the scum pipe (8) that near the break down maintenance of top layer fluidisation plate is used, and is furnished with twice water-cooled slide valve at the vertical section of scum pipe.
3. metallurgical cinder dry process device according to claim 1 is characterized in that, also comprises the rotary seal valve (10) that is positioned at multiple stage fluidized-bed below cooling slag particle outlet position, is used for cooled slag particle is discharged.
4. metallurgical cinder dry process device according to claim 1; It is characterized in that; Also comprise high-temperature gas flue (11); Be positioned at the furnace roof portion that handles, the high-temperature gas that the cooling of slag granulation obtains mixes the back with the high-temperature gas that the cooling of warm sludge grain secondary obtains on processing stove top and discharges through said high-temperature gas flue.
5. metallurgical cinder dry process device according to claim 1 is characterized in that, said slag imports the unit and comprises: slag ladle is used to hold high-temperature slag; And the slag chute that is coated with the insulation cover plate, be positioned at the bottom of said slag ladle, and the guiding high-temperature slag flows and gets in the slag inlet at said processing stove shaft middle part with slag curtain form.
6. metallurgical cinder dry treatment method may further comprise the steps:
(a): the high-temperature slag guiding is got in the processing stove (1); Said processing stove (1) comprises body of heater (9); Body of heater (9) comprising: adopt the shaft of vertical tank structure and will import unitary high-temperature slag from slag to import to the slag inlet that is positioned at processing stove shaft middle part; Wherein, the shaft of the slag inlet top of processing stove is the bulge shape;
(b): provide pressurized air with quick granulation of slag and refrigerative first gas blower (5) through being used to granulation and cooling jet; The high-speed air flow that is blown out by granulation cooling jet (4) will get into the high-temperature slag of handling stove (1) and blow to the top shaft of handling stove forming the warm sludge fountain, and slag is granulated into warm sludge grain and warm sludge grain fast and is cooled to the surface agglutinating temperature does not take place;
(c): through being used for being provided for compressed-air actuated second gas blower (7) of warm sludge grain secondary cooling usefulness to said multiple stage fluidized-bed bottom; Make warm sludge grain that above-mentioned steps (b) produces dropping process with carry out counterflow heat exchange from the multiple stage fluidized-bed upstream that comes out; And in multiple stage fluidized-bed, carry out multistage cycling hot exchange; To accomplish the secondary cooling of warm sludge grain; Wherein, the secondary cooling step (c) of the quick granulation of slag and cooling step (b) and warm sludge grain is accomplished in said same processing stove continuously, need the warm sludge grain be transported to another this middle-chain of independent secondary heat exchanger.
7. metallurgical cinder dry treatment method according to claim 6 is characterized in that, also comprises step:
(d): the high-temperature gas that produces respectively through above-mentioned steps (b) and step (c) handle that stove top is mixed and from the top flue discharge.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
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| CN2010102147036A CN101871025B (en) | 2010-06-24 | 2010-06-24 | Metallurgical molten slag dry-type processing device and processing method thereof |
| PCT/CN2011/075657 WO2011160551A1 (en) | 2010-06-24 | 2011-06-13 | Apparatus and method for dry treating metallurgical molten slag |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010102147036A CN101871025B (en) | 2010-06-24 | 2010-06-24 | Metallurgical molten slag dry-type processing device and processing method thereof |
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| CN101871025A CN101871025A (en) | 2010-10-27 |
| CN101871025B true CN101871025B (en) | 2012-12-26 |
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Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2011160551A1 (en) * | 2010-06-24 | 2011-12-29 | 北京神风创新热能技术有限公司 | Apparatus and method for dry treating metallurgical molten slag |
| CN101993964B (en) * | 2010-11-30 | 2012-07-18 | 武汉都市环保工程技术股份有限公司 | Metallurgical molten slag dry granulating and heat recovering system |
| CN102329901A (en) * | 2011-10-14 | 2012-01-25 | 无锡市东方环境工程设计研究所有限公司 | Liquid-state steel slag micronization recycling device |
| CN103361449B (en) * | 2012-03-30 | 2015-07-08 | 鞍钢股份有限公司 | High-efficiency blast furnace slag complementary energy recovery method and recovery device |
| CN102719579B (en) * | 2012-05-31 | 2013-12-18 | 四川川润股份有限公司 | Fluidized heat exchange device after slag of dry type granulating blast furnace |
| CN102719578A (en) * | 2012-06-28 | 2012-10-10 | 田鹏飞 | Method for cooling and utilizing high-temperature liquid industrial waste residues |
| CN103451330A (en) * | 2013-09-04 | 2013-12-18 | 北京神风创新热能技术有限公司 | Improved metallurgical molten slag dry quenching treatment device and treatment method |
| CN104109742B (en) * | 2014-07-31 | 2016-06-01 | 中冶南方工程技术有限公司 | A kind of injection solid impurity particle hits broken melting slag waste heat recovery system |
| CN106755649B (en) * | 2016-11-08 | 2018-09-25 | 游涛 | A kind of controllable turn over of output beats the grey formula slag granulating of the anti-ease of heat exchange and heat-energy recovering apparatus |
| CN106636502B (en) * | 2017-03-15 | 2019-04-30 | 湖南思为能源环保工程有限公司 | A kind of high temperature furnace slag wind quenching granulation fluidized-bed combustion boiler waste-heat recovery device |
| CN108103253A (en) * | 2018-01-24 | 2018-06-01 | 昆山宇顺环保科技有限公司 | A kind of grid agglomeration of blast furnace liquid slag and cement sensible heat recovery system and method |
| CN112048583A (en) * | 2020-09-19 | 2020-12-08 | 杭州鸿晶自动化科技有限公司 | Dry type slag treatment equipment |
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| JPS5521546A (en) * | 1978-08-02 | 1980-02-15 | Mitsubishi Heavy Ind Ltd | Molten slag processing device |
| CN201495230U (en) * | 2009-09-10 | 2010-06-02 | 河北理工大学 | Liquid steel slag gas quenching and granulating device |
| CN101691620B (en) * | 2009-09-10 | 2011-06-08 | 河北理工大学 | Process and device for processing liquid steel slag |
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