CN104805239A - Secondary pelletizing, cooling and waste heat recovering system for steel slag/calcium carbide - Google Patents
Secondary pelletizing, cooling and waste heat recovering system for steel slag/calcium carbide Download PDFInfo
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- CN104805239A CN104805239A CN201510230992.1A CN201510230992A CN104805239A CN 104805239 A CN104805239 A CN 104805239A CN 201510230992 A CN201510230992 A CN 201510230992A CN 104805239 A CN104805239 A CN 104805239A
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- calcium carbide
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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
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
- Y02P20/129—Energy recovery, e.g. by cogeneration, H2recovery or pressure recovery turbines
Abstract
The invention relates to a secondary pelletizing, cooling and waste heat recovering system for steel slag/calcium carbide. The system comprises secondary cooling and pelletizing equipment (1), unloading equipment (2) and secondary heat recovering and conveying equipment (4); the secondary cooling and pelletizing equipment (1) comprises a cooling kettle (02); a rotary disk (04) is arranged at the axis position in the cooling kettle (02); a transmitting shaft (12) is arranged under the rotary disk (04); a cooling air pipe (06) is arranged under the rotary disk (04); a secondary recovering hopper (13) is arranged at the axis position under the cooling air pipe (06); a secondary rotary disk (14) is arranged under the secondary recovering hopper (13); a transmitting shaft (15) is arranged under the secondary rotary disk (14); and the cooling air pipe (06) is connected with an air inlet pipe (07).
Description
Technical field
The present invention relates to a kind of slag/calcium carbide secondary granulation cooling and residual neat recovering system.
Background technology
The main disposal options of current slag has hot application, shrend etc., and the treatment process of above-mentioned various slag all needs to consume a large amount of water, causes slag processing cost higher; And the heat inconvenience that slag carries is reclaimed, this part heat is wasted; The water vapour simultaneously produced in slag processing process contains a large amount of alkaline dust, and the structures such as meeting corrosion workshop roof, roof beam structure, also have high risks to the person, pollute simultaneously to air; Moreover owing to adopting water-cooled, during later use further to slag, also need to carry out drying and processing to slag, still need lot of energy.
In addition, also need after overcooling broken again in calcium carbide production process.The type of cooling main is at present through crusher in crushing after water wall cooling, and the heat that above-mentioned technique calcium carbide carries especially sensible heat inconvenience reclaims, and this part heat is wasted; And process for cooling is complicated, efficiency is low.
Summary of the invention
The object of this invention is to provide a kind of slag/calcium carbide secondary granulation cooling and residual neat recovering system; it does not need to consume water just can make slag/calcium carbide cooling, granulation; significantly can reduce slag/calcium carbide processing cost; and do not produce water vapour in slag/calcium carbide treating processes; be conducive to extending workshop roof, crossbeam isostructural work-ing life; can avoid damaging human body simultaneously; cooled slag/calcium carbide also directly can carry out next step and utilize; do not need to carry out drying and processing to slag/calcium carbide, be conducive to save energy.
The present invention for achieving the above object, is achieved through the following technical solutions:
A kind of slag/calcium carbide secondary granulation cooling and residual neat recovering system, described system comprises cooling twice granulation apparatus 1, delivery device 2 and secondary heat recuperation and handling equipment 4, wherein said cooling twice granulation apparatus 1 comprises cooling reactor 02, described cooling reactor 02 internal axis position configuration rotating disk 04, described rotating disk 04 installs transmission shaft 12 below, shaft core position configuration secondary recovery hopper 13 below cooling duct 06 described in cooling duct 06 is provided with below described rotating disk 04, described secondary recovery hopper 13 is configuration time rotating disk 14 below, described time rotating disk 14 installs transmission shaft 15 below, described cooling duct 06 is connected with blast pipe 07.
Preferably; described cooling twice granulation apparatus 1 bottom connects delivery device 2; material blanking tube 3 is installed in described delivery device 2 bottom, and secondary heat recuperation and handling equipment 4 are installed in described material blanking tube 3 bottom, and heat recuperation pipeline 5 is installed on described secondary heat recuperation and handling equipment 4 top.
Preferably; wherein said cooling twice granulation apparatus 1 also comprises feed-pipe 01; escape pipe 03 and first, second motor 10; 19; wherein said feed-pipe 01 oblique cutting enters cooling reactor 02; described cooling reactor 02 top side wall sets out tracheae 03, and first, second motor 10,19 described is arranged on outside cooling reactor sidewall.
Preferably, the output shaft of wherein said first motor 10 installs driving pulley 08, described driving pulley 08 is connected by belt with the negative pulley wheel 09 below described rotating disk 04, the output shaft of described second motor 19 installs driving pulley 17, and described driving pulley 17 is connected by belt with the negative pulley wheel 18 below described rotating disk 14.
Preferably, wherein said rotating disk is connected with rotary disk basement 05,16 by swivel bearing with time rotating disk 04,14, and rotary disk basement 05,16 is fixed on cooling reactor 02 inwall by support.
Preferably, wherein said cooling duct 06 is horizontally disposed with in cooling reactor, and described cooling duct 06 is connected with described cooling reactor 02 inwall by support.
Preferably, the uniform air nozzle 11 in border, wherein said cooling duct 06 top.
Preferably, the diameter of wherein said cooling duct 06 is greater than the diameter of described rotating disk 04.
Preferably, described blast pipe 07 has controllable air quantity device, and described controllable air quantity device is made up of fender plate.
Preferably, described delivery device 2 adopts center unloading machine, and described center unloading machine comprises housing a1, scraper a2, material blanking tube a3, pinion(gear) a4, reducing motor a5, bull gear a6, level gage a7.
Preferably, described scraper a2 is helix shape, and apart from leaving appropriate height bottom described housing a1 to ensure that the slag/calcium carbide fallen can form the certain thickness bed of material and realize sealing and prevent escape of gas in the bottom of described housing a1.
Preferably, described level gage a7 monitors the rotating speed of reducing motor a5 described in bed depth feedback control that slag in described material blanking tube a3/calcium carbide pellet formed.
Preferably, described secondary heat recuperation and handling equipment 4 comprise seal casinghousing 001, the some venting ports 006 of described housing 001 top longitudinal arrangement, arrange some air outlets 002 respectively in described housing 001 both sides, and described some air outlets 002 are connected respectively some blower fans 007.
Preferably, bottom the described housing 001 of described secondary heat recuperation and handling equipment 4, the some compositions of longitudinal arrangement are to the connecting rod 04 arranged, and often organize on described connecting rod 04 and fix some charging rams 003, often organize described connecting rod 04 correspondence and arrange a hydro-cylinder 005.
The invention has the advantages that:
1, cool granulation apparatus and use centrifugal principle, successively producing centrifugal force by driven by motor rotating disk high speed rotating twice makes slag/calcium carbide splashing granulation fall into, the cooling of slag/calcium carbide, granulation effect can be made more obvious, slag particle volume after granulation is little and even, significantly can reduce slag/calcium carbide processing cost;
2, do not need to consume water and just can make slag/calcium carbide cooling, granulation, significantly can reduce slag/calcium carbide processing cost;
3, the high-temperature gas formed after slag/calcium carbide cooling air and slag/calcium carbide heat exchange is derived by pipeline, just can directly reclaim heat after dedusting, the recycling that the heat that slag/calcium carbide is carried is convenient, compared with existing slag/calcium carbide treatment process, eliminate a large amount of intermediate equipment and step, reduce slag/calcium carbide processing cost further;
4, do not produce water vapour in slag/calcium carbide treating processes, be conducive to extending workshop roof, crossbeam isostructural work-ing life, can avoid damaging human body simultaneously;
5, cooled slag/calcium carbide directly can carry out next step utilization, does not need to carry out drying and processing to slag/calcium carbide, is conducive to save energy;
6, slag/calcium carbide cooling efficiency is high, and service life of equipment is long;
7, slag/calcium carbide cooling air, through dedusting recoverable, does not discharge in air, can not pollute atmospheric environment.
8, in addition, slag provided by the invention/calcium carbide cooling and residual neat recovering system can not leak out in burner hearth, can not affect boiler combustion.
In sum, advantage and the advance of slag provided by the invention/calcium carbide secondary granulation cooling and residual neat recovering system are that traditional form is incomparable, therefore have very big promotional value and market outlook.
Accompanying drawing explanation
Fig. 1 is the one-piece construction schematic diagram of slag of the present invention/calcium carbide cooling system;
Fig. 2 is the internal structure front view of cooling twice granulation apparatus of the present invention;
Fig. 3 is the inside top figure of center of the present invention unloading machine;
Fig. 4 is the front view of center of the present invention unloading machine;
Fig. 5 is the front view of secondary heat recuperation of the present invention and handling equipment;
Fig. 6 is the vertical view of secondary heat recuperation of the present invention and handling equipment.
Embodiment
A kind of slag of the present invention/calcium carbide secondary granulation cooling and residual neat recovering system; comprise cooling twice granulation apparatus 1; cooling twice granulation apparatus 1 bottom connects delivery device 2; material blanking tube 3 is installed in delivery device 2 bottom; material blanking tube 3 oblique cutting enters secondary heat recuperation and handling equipment 4, and heat recuperation pipeline 5 is installed on secondary heat recuperation and handling equipment 4 top.
Cooling twice granulation apparatus 1 comprises feed-pipe 01, and feed-pipe 01 oblique cutting enters cooling reactor 02 and is welded as a whole.Cooling reactor 02 internal axis position configuration rotating disk 04, rotating disk 04 is connected with rotary disk basement 05 by swivel bearing, and rotary disk basement 05 is fixed on cooling reactor 02 inwall by the mode that support welds; Rotating disk 04 installs transmission shaft 12 below, transmission shaft 12 end installs negative pulley wheel 09, in cooling reactor 02 below rotating disk 04, cooling duct 06 is installed, cooling duct 06 is connected with blast pipe 07, cooling duct 06 is horizontally disposed with in cooling reactor, preferably, the diameter of described cooling duct 06 is greater than the diameter of described rotating disk 04.Cooling duct 06 is connected with cooling reactor 02 inwall by support, the uniform air nozzle 11 in border, cooling duct 06 top, cooling reactor 02 top side wall sets out tracheae 03, motor 10 is arranged on outside cooling reactor sidewall, the output shaft of motor 10 installs driving pulley 08, and driving pulley 08 is connected by belt with the negative pulley wheel 09 below rotating disk 04; Shaft core position configuration secondary recovery hopper 13 below cooling duct 06, for reclaiming uncured slag/calcium carbide, secondary recovery hopper 13 gusset is welded on cooling reactor 02, secondary recovery hopper 13 is configuration time rotating disk 14 below, secondary rotating disk 14 is arranged on rotary disk basement 16 by swivel bearing, and rotary disk basement 16 is connected by support with cooling reactor 02 inwall; Secondary rotating disk 14 installs transmission shaft 15 below, transmission shaft 15 end installs negative pulley wheel 18, second motor 19 is arranged on outside cooling reactor sidewall, and the output shaft of the second motor 19 installs driving pulley 17, and driving pulley 17 is connected by belt with the negative pulley wheel 18 below time rotating disk 14.
Motor 10 drives rotating disk 04 to rotate by belt transmission, slag/the calcium carbide entered in cooling reactor 02 is splashed to rotating disk 04 surrounding under the action of the centrifugal, air nozzle 11 on cooling duct 06 makes cooling air form annular air curtain, slag/calcium carbide is granulation solidification under the acting in conjunction of centrifugal force and air curtain, simultaneously blowing force upwards can extend the landing time of slag particle, increases heat transfer effect; The part be not granulated is had freely to fall in secondary recovery hopper 13; collecting through secondary recovery hopper 13 falls on time rotating disk 14; under the drive of motor 19, secondary rotating disk 14 high speed rotating makes slag/calcium carbide again splash granulation, and the slag particle be granulated with the last time falls into delivery device 2 jointly.
The high-temperature gas formed after slag/calcium carbide cooling air and slag/calcium carbide heat exchange is derived by escape pipe 03, and the inlet mouth that directly can enter waste heat steam boiler (not shown) after fly-ash separator dedusting is outer for utilizing for the preparation of steam or generating etc.
The present invention is in order to ensure the sealing of system, and delivery device 2 adopts center unloading machine, particularly, with reference to accompanying drawing 3 and Fig. 4, wherein said center unloading machine mainly comprises housing a1, scraper a2, material blanking tube a3, pinion(gear) a4, reducing motor a5, bull gear a6, and level gage a7.Preferably, scraper a2 adopts helix shape, and leaves appropriate height bottom scraper a2 distance housing a1 to ensure that the slag/calcium carbide fallen can form the certain thickness bed of material and realize sealing and prevent escape of gas in the bottom of housing a1.During work, reducing motor a5 drive pinion a4 rotates, pinion(gear) a4 coordinates with bull gear a6 and drives scraper a2 to rotate at housing a1 to fall into material blanking tube a3 with slag/calcium carbide pellet after making heat exchange, utilize level gage a7 to monitor the bed depth that in material blanking tube a3, slag/calcium carbide pellet is formed simultaneously, when bed depth is lower than the value preset, level gage a7 feeds back to reducing motor a5 mono-control signal, reducing motor a5 rotating speed is increased and then makes slag/calcium carbide fall into speed to improve; Otherwise then make reducing motor a5 rotating speed reduce and then make slag/calcium carbide fall into speed to slow down, thus the bed of material controlling to possess in the unloading machine material blanking tube a3 of guarantee center certain altitude realize sealing prevents escape of gas.
The structure of secondary heat recuperation of the present invention and handling equipment 4, particularly, with reference to accompanying drawing 5 and Fig. 6, preferably, secondary heat recuperation of the present invention and handling equipment 4 mainly comprise three compositions to the connecting rod 004 arranged, often pair of connecting rod is fixed four charging rams 003, under the drive of three hydro-cylinders 005 of corresponding setting respectively, connecting rod 004 drives charging ram 003 to move back and forth and carries and disturbance slag/calcium carbide.Three Fans 007 carry natural wind respectively by three air outlets 002 in housing 001, high-temperature steel slag/the calcium carbide of natural wind and state of disturbance carries out sufficient thermal exchange, the high-temperature gas completing thermal exchange is transferred out by three venting ports 006 of case top, after dedusting, carry out heat recovery and utilization.
Consider that slag/calcium carbide temperature in the process of conveying cooling progressively reduces, three Fans 007 and three hydro-cylinders 005 preferably control respectively, and the operating frequency of the air quantity namely carried and hydro-cylinder 005 reduces gradually.Temperature according to slag/calcium carbide regulates, and during slag/calcium carbide temperature height, the operating frequency of hydro-cylinder 005 improves, and the reciprocating frequency of connecting rod 004 improves to increase slag/calcium carbide perturbation, and the air quantity of blower fan 007 strengthens, to be more conducive to heat exchange simultaneously; When slag/calcium carbide temperature is low, the operating frequency of hydro-cylinder 005 lowers, and the air quantity of blower fan 007 reduces, to reduce energy consumption simultaneously.
In addition, three venting ports 006 of housing 001 top longitudinal arrangement can be distributed in high, medium and low temperature section, finally the gas recovery completing thermal exchange can be focused on unified in heat recuperation pipeline 5 utilization, also can according to the difference of temperature, in heat recuperation pipeline 5, correspondence arranges pipeline to be used respectively.
A kind of slag of the present invention/calcium carbide cooling and waste heat reclaiming process comprise the following steps:
Slag/calcium carbide cooling air enters air loop duct 06 through blast pipe 07, annularly the annular air-out groove 11 at airduct 06 top is blown into cooling reactor 02, annular air curtain is formed in cooling reactor 02, liquid steel slag/calcium carbide that cooling reactor 02 top hopper 01 falls drops down onto on rotating disk 04, rotate under the driving of motor 10, rotating speed is not less than 1500 revs/min, can speed control by frequency variation, liquid steel slag/calcium carbide throws away to surrounding by the centrifugation that rotating disk 04 produces, form thread or droplet-like slag/calcium carbide liquid, during the annular air curtain that thread or droplet-like slag/calcium carbide liquid is formed through cooling air, heat exchange rapid in cooling air, solidify out into solid steel slag/calcium carbide particle, if also have residue there is no the slag/calcium carbide solidified, can freely fall in secondary recovery hopper 13, collecting through secondary recovery hopper 13 falls on time rotating disk 14, under the drive of motor 19, secondary rotating disk 14 high speed rotating makes slag/calcium carbide again splash granulation, the slag particle be granulated with the last time falls into delivery device 2 jointly, after slag/calcium carbide cooling air and liquid steel slag/calcium carbide heat exchange, formation temperature is the high-temperature gas of 900 DEG C-1500 DEG C, and high-temperature gas enters after dust removal installation dedusting through escape pipe 03 and recycles.Slag/calcium carbide is collected equipment center and is entered secondary heat recuperation and handling equipment 4 by material blanking tube 3 by delivery device 2, in secondary heat recuperation and handling equipment 4, slag/calcium carbide and cooling air carry out heat exchange again, and warm air is recycled by heat recuperation pipeline 5.
The rotating speed of its turntable 04,14 can be chosen according to the temperature entering stove liquid steel slag/calcium carbide, and when the temperature entering stove liquid steel slag/calcium carbide is higher, slag/calcium carbide is more liquid, and rotating disk 04,14 should select lower rotating speed; When the temperature entering stove state slag/calcium carbide is lower, slag/calcium carbide mobility is poor, and rotating disk 04,14 should select higher rotating speed.
Above-mentioned processing step and slag of the present invention/calcium carbide secondary are granulated and cool and residual neat recovering system is combined; can realize not needing to consume the object that water just can make slag/calcium carbide cooling, granulation; and high efficiente callback can be carried out to the heat distributed in slag/calcium carbide process of cooling; supply outward for the preparation of steam; slag/calcium carbide cooling air can be recycled; do not discharge in air, can not pollute atmospheric environment.
What more than enumerate is only best specific embodiment of the present invention.Obviously, the invention is not restricted to above embodiment, many distortion can also be had.All distortion that those of ordinary skill in the art can directly derive from content disclosed by the invention or associate, all should think protection scope of the present invention.
Claims (14)
1. slag/calcium carbide secondary granulation cooling and residual neat recovering system, described system comprises cooling twice granulation apparatus (1), delivery device (2) and secondary heat recuperation and handling equipment (4), wherein said cooling twice granulation apparatus (1) comprises cooling reactor (02), described cooling reactor (02) internal axis position configuration rotating disk (04), described rotating disk (04) installs transmission shaft (12) below, described rotating disk (04) below is provided with cooling duct (06) described cooling duct (06) below shaft core position configuration secondary recovery hopper (13), described secondary recovery hopper (13) is configuration time rotating disk (14) below, described time rotating disk (14) installs transmission shaft (15) below, described cooling duct (06) is connected with blast pipe (07).
2. system according to claim 1; described cooling twice granulation apparatus (1) bottom connects delivery device (2); material blanking tube (3) is installed in described delivery device (2) bottom; secondary heat recuperation and handling equipment (4) are installed in described material blanking tube (3) bottom, and heat recuperation pipeline (5) is installed on described secondary heat recuperation and handling equipment (4) top.
3. system according to claim 1; wherein said cooling twice granulation apparatus (1) also comprises feed-pipe (01); escape pipe (03) and first, second motor (10; 19); wherein said feed-pipe (01) oblique cutting enters cooling reactor (02); described cooling reactor (02) top side wall sets out tracheae (03); first, second motor described (10,19) is arranged on outside cooling reactor sidewall.
4. system according to claim 3, the output shaft of wherein said first motor (10) installs driving pulley (08), described driving pulley (08) is connected by belt with the negative pulley wheel (09) below described rotating disk (04), the output shaft of described second motor (19) installs driving pulley (17), and described driving pulley (17) is connected by belt with the negative pulley wheel (18) below described rotating disk (14).
5. system according to claim 1, wherein said rotating disk is connected with rotary disk basement (05,16) by swivel bearing with time rotating disk (04,14), and rotary disk basement (05,16) is fixed on cooling reactor (02) inwall by support.
6. system according to claim 1, wherein said cooling duct (06) is horizontally disposed with in cooling reactor, and described cooling duct (06) is connected with described cooling reactor (02) inwall by support.
7. system according to claim 1, the uniform air nozzle in wherein said cooling duct (06) border, top (11).
8. system according to claim 1, the diameter of wherein said cooling duct (06) is greater than the diameter of described rotating disk (04).
9. system according to claim 1, described blast pipe (07) has controllable air quantity device, and described controllable air quantity device is made up of fender plate.
10. system according to claim 1, described delivery device (2) adopts center unloading machine, described center unloading machine comprises housing (a1), scraper (a2), material blanking tube (a3), pinion(gear) (a4), reducing motor (a5), bull gear (a6), level gage (a7).
11. systems according to claim 10, described scraper (a2) is helix shape, and leaves appropriate height to ensure that the slag/calcium carbide fallen can form the certain thickness bed of material and realize sealing and prevent escape of gas in the bottom of described housing (a1) apart from described housing (a1) bottom.
12. systems according to claim 10, the rotating speed of reducing motor (a5) described in bed depth feedback control that the interior slag of described material blanking tube (a3)/calcium carbide pellet formed monitored by described level gage (a7).
13. systems according to claim 1, described secondary heat recuperation and handling equipment (4) comprise seal casinghousing (001), the some venting ports of described housing (001) top longitudinal arrangement (006), arrange some air outlets (002) respectively in described housing (001) both sides, described some air outlets (002) are connected respectively some blower fans (007).
14. systems according to claim 13, the some compositions of described housing (001) bottom longitudinal arrangement of described secondary heat recuperation and handling equipment (4) are to the connecting rod (04) arranged, often organize upper fixing some the charging rams (003) of described connecting rod (04), often organize described connecting rod (04) correspondence and one hydro-cylinder (005) is set.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510230992.1A CN104805239A (en) | 2015-05-08 | 2015-05-08 | Secondary pelletizing, cooling and waste heat recovering system for steel slag/calcium carbide |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510230992.1A CN104805239A (en) | 2015-05-08 | 2015-05-08 | Secondary pelletizing, cooling and waste heat recovering system for steel slag/calcium carbide |
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| CN104805239A true CN104805239A (en) | 2015-07-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510230992.1A Pending CN104805239A (en) | 2015-05-08 | 2015-05-08 | Secondary pelletizing, cooling and waste heat recovering system for steel slag/calcium carbide |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101135455A (en) * | 2007-09-21 | 2008-03-05 | 北京国电富通科技发展有限责任公司 | Conveyor having cooling down function and cooling down slag method |
| CN102690915A (en) * | 2012-05-31 | 2012-09-26 | 四川川润股份有限公司 | Modular dry granulating and cooling device for blast furnace slag |
| CN202717387U (en) * | 2012-06-29 | 2013-02-06 | 青岛德施普机械工业有限公司 | Center discharge machine |
| CN102965457A (en) * | 2012-12-11 | 2013-03-13 | 济钢集团国际工程技术有限公司 | Slag rotating dry-method granulation and waste heat recovery system |
| CN103540698A (en) * | 2013-11-02 | 2014-01-29 | 许征鹏 | Steel slag granulating and afterheat recycling device |
-
2015
- 2015-05-08 CN CN201510230992.1A patent/CN104805239A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101135455A (en) * | 2007-09-21 | 2008-03-05 | 北京国电富通科技发展有限责任公司 | Conveyor having cooling down function and cooling down slag method |
| CN102690915A (en) * | 2012-05-31 | 2012-09-26 | 四川川润股份有限公司 | Modular dry granulating and cooling device for blast furnace slag |
| CN202717387U (en) * | 2012-06-29 | 2013-02-06 | 青岛德施普机械工业有限公司 | Center discharge machine |
| CN102965457A (en) * | 2012-12-11 | 2013-03-13 | 济钢集团国际工程技术有限公司 | Slag rotating dry-method granulation and waste heat recovery system |
| CN103540698A (en) * | 2013-11-02 | 2014-01-29 | 许征鹏 | Steel slag granulating and afterheat recycling device |
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Application publication date: 20150729 |