CN103834753B - Molten slag is granulated and solidification equipment fast - Google Patents
Molten slag is granulated and solidification equipment fast Download PDFInfo
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- CN103834753B CN103834753B CN201310710782.3A CN201310710782A CN103834753B CN 103834753 B CN103834753 B CN 103834753B CN 201310710782 A CN201310710782 A CN 201310710782A CN 103834753 B CN103834753 B CN 103834753B
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Abstract
The invention discloses a kind of molten slag granulation and solidification equipment, relate to ferrous metallurgy field of furnace slag treatment, provide a kind of slag granulation effective, be beneficial to molten slag granulation and the solidification equipment of slag grain collection.Molten slag granulation and solidification equipment comprise melting furnace slag ladle, molten slag runner and high pressure air jet nozzles; Molten slag runner is obliquely installed, and higher one end is connected with molten slag pot bottom, and lower one end is slag outlet; High pressure air jet nozzles position is corresponding with slag outlet position; Molten slag granulation and solidification equipment also comprise the injector that shape is conical hollow; injector comprises injector skirt section and is positioned at the spout of end, injector skirt section; the coated slag outlet of injector skirt section and high pressure air jet nozzles, spout is arranged at the front portion in the jet direction of high pressure air jet nozzles.The present invention can be used for molten slag granulation and solidification, is beneficial to molten slag and is granulated and solidify to form cement raw material etc. and recovery slag sensible heat fast.
Description
Technical field
The present invention relates to ferrous metallurgy field of furnace slag treatment, particularly relate to a kind of molten slag and be granulated fast and solidification equipment.
Background technology
Can produce a large amount of slags in Iron and Steel Production, the utilization of slag mainly contains two aspects, and one is slag itself is cooled rapidly the raw material being used as to produce cement, and two is the heats utilizing cooling of furnace slag to discharge.
The traditional method that slag cools rapidly mainly water quenching, water quenching is that molten slag is placed in cold slag bath, and slag is met water and cooled rapidly and become granular, catches to be placed in stack on field after slag bath precipitation with crane.The shortcoming of water quenching has: 1, a large amount of consumption water waste water resource; 2, slag sensible heat is not reclaimed, serious waste residual heat resources; 3, the gaseous sulphides such as H2S are produced, polluted air; 4, system maintenance work amount is large; 5, during grinding, grain slag must be air-dry, wastes energy.
In order to the technique of dry type cooled slag has rapidly appearred in the shortcoming overcoming water quenching.Such as application number be 88211276 Chinese patent disclose a kind of slag (slag) wind driven granulation device.Principle of work is slowly toppled over by molten steel slag (slag), constantly blows the slag (slag) in toppling process with high-pressure air, and slag (slag) is blown out granule, and granule slag (slag) and air, the rapid heat exchange of water are solidified.Present method overcomes water quenching and wastes water, and during system maintenance work amount large and grinding, grain slag must be air-dry, the shortcoming that wastes energy and to have equipment simple, and the low and slag (slag) of cost is granulated the advantage reducing grinding workload.Such as, but slag (slag) wind driven granulation device still has shortcoming, wind slag (slag), granulation effect is unstable, and size of particles is uneven; Slag (slag) grain is scattered scope greatly, collects the shortcomings such as inconvenience.
Summary of the invention
The technical problem to be solved in the present invention is: provide a kind of slag granulation effective, and the molten slag being beneficial to the collection of slag grain is granulated and solidification equipment fast.
In order to solve the problem, the technical scheme adopted is: molten slag is granulated fast and solidification equipment comprises melting furnace slag ladle, molten slag runner and high pressure air jet nozzles; Molten slag runner tilts or vertically arranges, and higher one end is connected with molten slag pot bottom, and lower one end is slag outlet; High pressure air jet nozzles position is corresponding with slag outlet position; molten slag is granulated fast and solidification equipment also comprises the injector that shape is conical hollow; injector comprises injector skirt section and is positioned at the spout of end, injector skirt section; the coated slag outlet of injector skirt section and high pressure air jet nozzles, spout is arranged at the front portion in the jet direction of high pressure air jet nozzles.
Further: the unit time jet amount of high pressure air jet nozzles and whiff pressure adjustable.
Further: molten slag is granulated fast and solidification equipment comprises aditus laryngis portion and shape is the expansion segment of conical hollow; aditus laryngis portion, expansion segment and injector skirt section are coaxially arranged; aditus laryngis portion is connected with the close spout one end in injector skirt section, and expansion segment tip is connected with aditus laryngis portion.
Further: molten slag runner comprises slag vent pipe, slag door and slag transfer lime, slag vent pipe is connected with molten slag pot bottom, slag door is used for the mouth of pipe closing slag vent pipe, slag transfer lime tilts or vertically arranges, the higher one end of slag transfer lime is positioned at immediately below slag vent pipe, and the lower one end of slag transfer lime is slag outlet.
Further: slag transfer lime is obliquely installed, one section that slag transfer lime is higher is the semicircle receiving tube of opening upwards, and one section that slag transfer lime is lower is pipe.
Further: tank interior is provided with slag whipping appts.
Further: tank body top is provided with device for removing slag.
The invention has the beneficial effects as follows: molten slag forms vaporific and granular drop from spout ejection after the impact of high velocity air; vaporific and granular drop and the quick heat exchange of air-flow simultaneously; the temperature of drop is made to be reduced to below fusing point fast; realize its solidification; thus realize the quick granulation of melt substance and the object of solidification; make slag can be used as cement raw material etc., and be beneficial to recovery molten slag sensible heat.The slag grain size that the slag grain that the utility model produces produces compared with background technology wind crush method evenly; When the whiff pressure that high pressure air jet nozzles is same, molten slag is faster from spout spouting velocity, apart from farther, longer for duration of contact with air, is conducive to molten slag cooling; Molten slag sprays from spout to a direction, can not be scattered on a large scale, be beneficial to slag collection.
Accompanying drawing explanation
Fig. 1 is that molten slag is granulated and a kind of embodiment schematic diagram of solidification equipment structure fast;
Fig. 2 is that molten slag is granulated and the another kind of embodiment schematic diagram of solidification equipment structure fast;
Be labeled as in figure: melting furnace slag ladle 1, slag vent pipe 2, slag door 3, slag transfer lime 4, injector 5, guard shield 6, spout baffle plate 7, spout 8, injector skirt section 9, high pressure air jet nozzles 10, slag outlet 11, molten slag runner 12.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is further described.
Molten slag is granulated fast and solidification equipment comprises melting furnace slag ladle 1, molten slag runner 12 and high pressure air jet nozzles 10; Molten slag runner 12 tilts or vertically arranges, and higher one end is connected with bottom melting furnace slag ladle 1, and lower one end is slag outlet 11; High pressure air jet nozzles 10 position is corresponding with slag outlet 11 position; Molten slag is granulated fast and solidification equipment also comprises the injector 5 that shape is conical hollow; injector 5 comprises injector skirt section 9 and is positioned at the spout 8 of end, injector skirt section 9; injector skirt section 9 coated slag outlet 11 and high pressure air jet nozzles 10, spout 8 is arranged at the front portion in the jet direction of high pressure air jet nozzles 10.
This device is utilized to be granulated and the method for solidification of molten slag is: to be transferred to from slag ladle in melting furnace slag ladle 1 by molten slag; Molten slag flow to slag outlet 11 position along molten slag runner 12; Spray from spout 8 after the impact of high velocity air at slag outlet 11 position molten slag and form vaporific and granular drop; vaporific and granular drop and the quick heat exchange of air-flow simultaneously; the temperature of drop is made to be reduced to below fusing point fast; realize its solidification; thus realize the quick granulation of melt substance and the object of solidification; make slag can be used as cement raw material etc., and be beneficial to recovery molten slag sensible heat.The slag grain size that the slag grain that the utility model produces produces compared with background technology wind crush method evenly; When the whiff pressure that high pressure air jet nozzles is same, molten slag is faster from spout spouting velocity, apart from farther, longer for duration of contact with air, is conducive to molten slag cooling; Molten slag sprays from spout to a direction, can not be scattered on a large scale, be beneficial to slag collection.
High pressure air jet nozzles 10 is can the nozzle of inject high pressure air, and obvious high pressure air jet nozzles 10 needs to connect air compressor, connecting pipeline needs arrange air valve to control gas path on-off.Melting furnace slag ladle 1, it is that steel inside arranges refractory layer that molten slag runner 12 and these component touching molten slag of injector 5 need with heat-stable material making or outside.In order to regulate molten slag to form the size of particle, speed of cooling and jet length, control valve can be set or control air compressor make the unit time of high pressure air jet nozzles 10 jet amount and whiff pressure adjustable.
In order to limit the eject position of molten slag further; after molten slag is sprayed, more concentrated being beneficial to is collected; and improve molten slag granulation, solidification effect; molten slag is granulated and solidification equipment fast: comprise the expansion segment 6 that aditus laryngis portion 7 and shape are conical hollow; aditus laryngis portion 7, expansion segment 6 and injector skirt section 9 are coaxially arranged; aditus laryngis portion 7 is connected with close spout 8 one end in injector skirt section 9, and expansion segment 6 tip is connected with aditus laryngis portion 7.Taperedly in the middle of two that injector 5 and guard shield 6 are connected to form is thick to be pipeline-likely similar to " Venturi tube ", outsourcing existing " Venturi tube " trouble manufactured voluntarily can be saved.
The concrete set-up mode of molten slag runner 12 is: molten slag runner 12 comprises slag vent pipe 2, slag door 3 and slag transfer lime 4, slag vent pipe 2 is connected with bottom melting furnace slag ladle 1, slag door 3 is for the mouth of pipe of closed slag vent pipe 2, slag transfer lime 4 tilts or vertically arranges, the higher one end of slag transfer lime 4 is positioned at immediately below slag vent pipe 2, and the lower one end of slag transfer lime 4 is slag outlet 11.Opening and closing slag door 3 can control molten slag and whether discharge.Slag transfer lime 4 can size is identical up and down also can be up big and down small.Fig. 1 is that slag transfer lime 4 vertically arranges up big and down small situation.Fig. 2 is that slag transfer lime 4 is obliquely installed upper and lower situation of the same size.When slag transfer lime 4 is obliquely installed, cleaning slag transfer lime 4 can be convenient to for the semicircular pipe of opening upwards for higher one section and prevents slag transfer lime 4 from blocking.
Reduce mobility decline to prevent the slag door 3 turn-off time longer molten slag caused temperature in slag vent pipe 2 to be difficult to flow out, slag vent pipe 2 inside is provided with slag whipping appts.Slag whipping appts can comprise rotating shaft, and rotating shaft arranges stirrer gear; Slag whipping appts also can be helix transporting device, can stir propelling movement effect in addition, molten slag can be transferred out slag vent pipe 2.
The molten slag surface of tank body 1 inner top can contact with air, and after Long contact time, molten slag can solidify.In order to avoid the slag that solidifies of tank body 1 inner top blocks slag vent pipe 2, tank body 1 top is provided with device for removing slag, and device for removing slag is that the slag solidified is transferred out slag pot 1, to prevent blocking slag vent pipe 2.Device for removing slag can be identical with the device for removing slag of prior art slag removal machine.
Claims (7)
1. molten slag is granulated and solidification equipment fast, comprises melting furnace slag ladle (1), molten slag runner (12) and high pressure air jet nozzles (10); Molten slag runner (12) tilts or vertically arranges, and higher one end is connected with melting furnace slag ladle (1) bottom, and lower one end is slag outlet (11); High pressure air jet nozzles (10) position is corresponding with slag outlet (11) position; It is characterized in that: comprise the injector (5) that shape is conical hollow, injector (5) comprises injector skirt section (9) and is positioned at the spout (8) of injector skirt section (9) end, the outlet of injector skirt section (9) coated slag (11) and high pressure air jet nozzles (10), spout (8) is arranged at the front portion in high pressure air jet nozzles (10) jet direction.
2. molten slag according to claim 1 is granulated and solidification equipment fast, it is characterized in that: the unit time jet amount of high pressure air jet nozzles (10) and whiff pressure adjustable.
3. molten slag according to claim 2 is granulated and solidification equipment fast; it is characterized in that: comprise the expansion segment (6) that aditus laryngis portion (7) and shape are conical hollow; aditus laryngis portion (7), expansion segment (6) and injector skirt section (9) are coaxially arranged; aditus laryngis portion (7) is connected with close spout (8) one end of injector skirt section (9), and expansion segment (6) tip is connected with aditus laryngis portion (7).
4. molten slag according to claim 3 is granulated and solidification equipment fast; it is characterized in that: molten slag runner (12) comprises slag vent pipe (2), slag door (3) and slag transfer lime (4); slag vent pipe (2) is connected with melting furnace slag ladle (1) bottom; slag door (3) is for the mouth of pipe of closed slag vent pipe (2); slag transfer lime (4) tilts or vertically arranges; slag transfer lime (4) higher one end is positioned at immediately below slag vent pipe (2), and slag transfer lime (4) lower one end is slag outlet (11).
5. molten slag according to claim 4 is granulated and solidification equipment fast; it is characterized in that: slag transfer lime (4) is obliquely installed; one section that slag transfer lime (4) is higher is the semicircle receiving tube of opening upwards, and one section that slag transfer lime (4) is lower is pipe.
6. molten slag according to claim 5 is granulated and solidification equipment fast, it is characterized in that: tank body (1) inside is provided with slag whipping appts.
7. molten slag according to claim 6 is granulated and solidification equipment fast, it is characterized in that: tank body (1) top is provided with device for removing slag.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310710782.3A CN103834753B (en) | 2013-07-10 | 2013-12-20 | Molten slag is granulated and solidification equipment fast |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310288775 | 2013-07-10 | ||
| CN201310288775.9 | 2013-07-10 | ||
| CN201310710782.3A CN103834753B (en) | 2013-07-10 | 2013-12-20 | Molten slag is granulated and solidification equipment fast |
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| CN103834753A CN103834753A (en) | 2014-06-04 |
| CN103834753B true CN103834753B (en) | 2016-01-13 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106148608A (en) * | 2015-04-24 | 2016-11-23 | 田官钰 | Slag ball manufactures device |
| CN107586900B (en) * | 2017-08-22 | 2019-03-29 | 上海驰春节能科技有限公司 | A kind of method and device of spray-granulated molten blast furnace slag |
| CN107460266A (en) * | 2017-09-27 | 2017-12-12 | 北京立化科技有限公司 | A kind of slag dry granulation takes hot systems |
| CN107816898B (en) * | 2017-11-21 | 2024-04-26 | 中山蓝冰节能环保科技有限公司 | Slag heat exchange device and high-temperature waste heat recovery device comprising same |
| CN107723397A (en) * | 2017-11-21 | 2018-02-23 | 中山蓝冰节能环保科技有限公司 | Clinker wind quenching granulating device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN202380006U (en) * | 2011-12-13 | 2012-08-15 | 河南科技大学 | High-temperature molten steel slag granulating device |
| CN102732654B (en) * | 2012-07-11 | 2014-04-30 | 江苏东能环保能源科技有限公司 | Device and method for carrying out granulation treatment and residual heat utilization on liquid-state furnace slag |
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