CN102538438A - Cupola furnace casting dust treating method - Google Patents
Cupola furnace casting dust treating method Download PDFInfo
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- CN102538438A CN102538438A CN2010106029787A CN201010602978A CN102538438A CN 102538438 A CN102538438 A CN 102538438A CN 2010106029787 A CN2010106029787 A CN 2010106029787A CN 201010602978 A CN201010602978 A CN 201010602978A CN 102538438 A CN102538438 A CN 102538438A
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- dust
- furnace cupola
- casting
- slag
- furnace
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- 239000000428 dust Substances 0.000 title claims abstract description 137
- 238000005266 casting Methods 0.000 title claims abstract description 41
- 239000002893 slag Substances 0.000 claims abstract description 37
- 239000000571 coke Substances 0.000 claims abstract description 17
- 238000004519 manufacturing process Methods 0.000 claims abstract description 7
- 235000019738 Limestone Nutrition 0.000 claims abstract description 6
- 239000006028 limestone Substances 0.000 claims abstract description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 34
- 239000000843 powder Substances 0.000 claims description 33
- 238000003860 storage Methods 0.000 claims description 31
- 238000003672 processing method Methods 0.000 claims description 24
- 229910052742 iron Inorganic materials 0.000 claims description 17
- 239000007788 liquid Substances 0.000 claims description 12
- 230000015572 biosynthetic process Effects 0.000 claims description 5
- 238000006243 chemical reaction Methods 0.000 claims description 5
- 238000007599 discharging Methods 0.000 claims description 5
- 238000005755 formation reaction Methods 0.000 claims description 5
- 239000000203 mixture Substances 0.000 claims description 5
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 5
- 238000004642 transportation engineering Methods 0.000 claims description 5
- 230000005514 two-phase flow Effects 0.000 claims description 5
- 238000003723 Smelting Methods 0.000 abstract description 2
- 238000007664 blowing Methods 0.000 abstract 1
- 239000002994 raw material Substances 0.000 description 7
- 239000007789 gas Substances 0.000 description 6
- 238000002844 melting Methods 0.000 description 5
- 239000004576 sand Substances 0.000 description 5
- 229920000742 Cotton Polymers 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000004064 recycling Methods 0.000 description 3
- 239000007921 spray Substances 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- 239000004568 cement Substances 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 230000003009 desulfurizing Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000011490 mineral wool Substances 0.000 description 2
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- 235000015450 Tilia cordata Nutrition 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- UGFAIRIUMAVXCW-UHFFFAOYSA-N carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 239000012159 carrier gas Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000002817 coal dust Substances 0.000 description 1
- 230000000875 corresponding Effects 0.000 description 1
- 238000006477 desulfuration reaction Methods 0.000 description 1
- 238000010410 dusting Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000003500 flue dust Substances 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 238000007499 fusion processing Methods 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 238000010309 melting process Methods 0.000 description 1
- 239000003638 reducing agent Substances 0.000 description 1
- 238000010079 rubber tapping Methods 0.000 description 1
Abstract
A cupola furnace casting dust treating method comprises the following steps: (1) collecting casting dust, (1.1) collecting the casting dust in a dust catcher dust-storing tank, and (1.2) intensively sending collected dust into a dust-storing tank of a dust blowback device through negative pressure conveying; (2) blowing the dust into a cupola furnace coke bed according to set flow quantity, (2.1) sending the dust into a spiral conveyer, (2.2) adjusting motor rotating speed of the spiral conveyer to meet the set flow quantity, (2.3) sending the dust into an air supply pipeline of a cupola furnace, and (2.4) sending the dust into the cupola furnace coke bed through an air inlet; and (3) manufacturing furnace slag, (3.1) adjusting limestone quantity added into the cupola furnace to form molten slag with certain acidity, and (3.2) enabling the molten slag flowing out of the cupola furnace to form the furnace slag. The cupola furnace casting dust treating method is reliable in running, free of dust pollution, good in smelting quality, energy-saving, emission-reducing, consumption reducing, low in cost, high in return rate on investment, comprehensive in resource utilization and environment-protecting, and can be widely applied to the cupola furnace casting industry.
Description
Technical field the present invention relates to a kind of furnace cupola casting dust processing method, can be widely used in the furnace cupola casting industry.
The existing furnace cupola of background technology, work under bad environment produces a large amount of casting dust, comprises furnace cupola flue dust, clay-bonded sand processing dust, stirs up a cloud of dust the serious harm health.These dust are often thrown away as discarded object, and both contaminated environment failed again effectively to utilize.
Summary of the invention the object of the present invention is to provide that a kind of reliable, no dust pollution, melting quality are good, energy-saving and emission-reduction, consumption reduction, cost is low, rate of return on investment is high, a kind of furnace cupola casting dust processing method of comprehensive utilization of resources, environmental protection.
In order to achieve the above object, a kind of furnace cupola casting of the present invention dust processing method, undertaken by following step:
(1) collects the casting dust
(1.1) produce the position of a large amount of dust in foundry, nonaqueous dust cleaner be set, with dust collection in the deduster dust storage container,
(1.2) with the dust in each deduster dust storage container, through negative pressure transportation, concentrated sending in the storage powder jar of dust blowback device;
(2) by setting flow dust is blown in the furnace cupola bed coke
(2.1) dust in the storage powder jar of aforesaid dust blowback device, the passage that is connected with conveying worm through storage powder jar lower end gets into conveying worm,
(2.2) set up to drive the rotating speed of the frequency control motor of conveying worm, make the powder sending quantity of conveying worm reach the flow of setting: 25～75 kilograms of one ton of iron liquid of every fusing powder sending quantities,
(2.3) discharging opening of conveying worm is communicated with the ajutage of furnace cupola, and dust is admitted to the air supply duct of furnace cupola,
(2.4) dust of entering air supply duct is dispelled by the moving air in the pipeline, is suspended in the air-supply, is the two-phase flow state, gets in furnace cupola bed coke through each air port;
(3) slag manufacturing
(3.1) adjustment adds the lime stone amount of furnace cupola, with the silica mineral composition reaction in the dust, forms the slag of certain acidity,
(3.2) slag of outflow furnace cupola, through dregs-separating device and the shunting of iron liquid, but the slag of formation comprehensive utilization of resources.
A kind of furnace cupola of the present invention casting dust processing method, the position in that sand preparing machine system of foundry, furnace cupola are prone to produce a large amount of dust is provided with nonaqueous dust cleaner, with dust collection in the deduster dust storage container.
A kind of furnace cupola of the present invention casting dust processing method is set up the rotating speed of the frequency control motor that drives conveying worm, makes the powder sending quantity of conveying worm reach the flow of setting, can produce the effect that improves iron liquid tapping temperature, reduces burnt consumption.
A kind of furnace cupola casting of the present invention dust processing method, the lower end outlet of storage powder jar communicates with the spiral pressure fan, and the powder in the storage powder jar is sent into furnace cupola by the spiral pressure fan by setting flow, and air supply duct is suspended state, gets in the bed coke through the air port with the wind.
A kind of furnace cupola casting of the present invention dust processing method, the slag of outflow furnace cupola through dregs-separating device and the shunting of iron liquid, gets into slag resource, commercialization treatment process link, realizes energy-saving and emission-reduction, comprehensive utilization of resources.
A kind of furnace cupola casting of the present invention dust processing method adds the casting dust in the furnace cupola air-supply, combustible components such as the coke blacking in the dust, coal dust increase furnace heat, promote CO burning in the furnace gas, improve furnace temperature and melting quality, save coke; The casting dust becomes slag, and slag can be used as cement raw material, and slag aquation or system can be used as the heat insulating products raw material behind the cotton, realize the comprehensive utilization of resources of furnace cupola refuse, has avoided dust to throw aside the pollution to environment.
A kind of furnace cupola of the present invention casting dust processing method sprays into the casting dust in the furnace cupola air port, the furnace cupola fusion process is had significant invigoration effect and molten iron, flue gas desulfurization effect.The fuel powder that sprays into has promoted the looping combustion reaction of CO, improves the furnace gas ratio of combustion, thereby improves molten iron temperature and melting rate, reduces burnt consumption; Be suspended in that desulfurizing agent powder and furnace gas, molten iron in the furnace gas drips on a large scale, Long contact time, can give full play to its desulfidation, the intensified smelting process furnace gas and molten iron.
A kind of furnace cupola casting of the present invention dust processing method, coke powder that sprays into and the CO in the furnace gas burn at fusion zone with the air that is got into by the mouth that dusts and the carrier gas of coke powder, have improved the temperature at this place, and air velocity is improved, and have strengthened the heat exchange in the stove.Simultaneously, burnt consumption decline, the corresponding minimizing of amount of lime; Melting rate improves, and the radiation loss of fusing ton iron is reduced, and it is burnt to help joint, energy-saving and emission-reduction, and consumption reduction, cost is low.
A kind of furnace cupola casting of the present invention dust processing method; The discarded slag of making over obtains comprehensive utilization, and twice laid is turned waste into wealth; Simultaneously; The heat energy of the high temperature furnace slag of fusing also can obtain recycling, and promptly the high temperature furnace slag UTILIZATION OF VESIDUAL HEAT IN has realized the recycling treatment of discarded object and the recycling of commercialization.
A kind of furnace cupola casting of the present invention dust processing method, the high-temperature slag that utilizes the furnace cupola discharge adopts the directly cotton technology of system of coming out of the stove as the raw material of producing rock wool; Not separately to rock wool raw material heat fused; Make full use of waste residue and heat energy thereof that furnace cupola is discharged, saved raw material and melting process in the cotton technical process of original system, saved purchase slag and freight; Thereby the purpose that reached comprehensive utilization of waste materials, energy efficient, reduces cost, rate of return on investment is high.
A kind of furnace cupola casting of the present invention dust processing method, reliable, simple to operate, obsolete broken Jiao of furnace cupola capable of using, no dust pollution, the investment payback time is short, and rate of return on investment is high.
A kind of furnace cupola casting of the present invention dust processing method, the casting dust becomes slag, and slag can be used as cement raw material; Can be used as the heat insulating products raw material behind slag aquation or the system cotton; Realize comprehensive utilization of resources, avoided dust to throw aside the pollution to environment, reached the purpose of environmental protection.
A kind of furnace cupola casting of the present invention dust processing method, through facts have proved, it is reliable effectively, and technological process is short, reduced investment, the amount of dusting is controlled, saves reducing agent, and is free from environmental pollution, adapts to various production scales.
In sum, a kind of furnace cupola casting of the present invention dust processing method, reliable, no dust pollution, the melting quality is good, energy-saving and emission-reduction, consumption reduction, cost is low, and rate of return on investment is high, comprehensive utilization of resources, environmental protection.
The specific embodiment
Embodiment 1:
A kind of furnace cupola casting of the present invention dust processing method, undertaken by following step:
(1) collects the casting dust
(1.1) produce the position of a large amount of dust in foundry, nonaqueous dust cleaner be set, with dust collection in the deduster dust storage container,
(1.2) with the dust in each deduster dust storage container, through negative pressure transportation, concentrated sending in the storage powder jar of dust blowback device;
(2) by setting flow dust is blown in the furnace cupola bed coke
(2.1) dust in the storage powder jar of aforesaid dust blowback device, the passage that is connected with conveying worm through storage powder jar lower end gets into conveying worm,
(2.2) set up to drive the rotating speed of the frequency control motor of conveying worm, make the powder sending quantity of conveying worm reach the flow of setting: 25 kilograms of one ton of iron liquid of every fusing powder sending quantities,
(2.3) discharging opening of conveying worm is communicated with the ajutage of furnace cupola, and dust is admitted to the air supply duct of furnace cupola,
(2.4) dust of entering air supply duct is dispelled by the moving air in the pipeline, is suspended in the air-supply, is the two-phase flow state, gets in furnace cupola bed coke through each air port;
(3) slag manufacturing
(3.1) adjustment adds the lime stone amount of furnace cupola, with the silica mineral composition reaction in the dust, forms the slag of certain acidity,
(3.2) slag of outflow furnace cupola, through dregs-separating device and the shunting of iron liquid, but the slag of formation comprehensive utilization of resources.
A kind of furnace cupola of the present invention casting dust processing method, the position in that sand preparing machine system of foundry, furnace cupola are prone to produce a large amount of dust is provided with nonaqueous dust cleaner, with dust collection in the deduster dust storage container.
Embodiment 2:
A kind of furnace cupola casting of the present invention dust processing method, undertaken by following step:
(1) collects the casting dust
(1.1) produce the position of a large amount of dust in foundry, nonaqueous dust cleaner be set, with dust collection in the deduster dust storage container,
(1.2) with the dust in each deduster dust storage container, through negative pressure transportation, concentrated sending in the storage powder jar of dust blowback device;
(2) by setting flow dust is blown in the furnace cupola bed coke
(2.1) dust in the storage powder jar of aforesaid dust blowback device, the passage that is connected with conveying worm through storage powder jar lower end gets into conveying worm,
(2.2) set up to drive the rotating speed of the frequency control motor of conveying worm, make the powder sending quantity of conveying worm reach the flow of setting: 75 kilograms of one ton of iron liquid of every fusing powder sending quantities,
(2.3) discharging opening of conveying worm is communicated with the ajutage of furnace cupola, and dust is admitted to the air supply duct of furnace cupola,
(2.4) dust of entering air supply duct is dispelled by the moving air in the pipeline, is suspended in the air-supply, is the two-phase flow state, gets in furnace cupola bed coke through each air port;
(3) slag manufacturing
(3.1) adjustment adds the lime stone amount of furnace cupola, with the silica mineral composition reaction in the dust, forms the slag of certain acidity,
(3.2) slag of outflow furnace cupola, through dregs-separating device and the shunting of iron liquid, but the slag of formation comprehensive utilization of resources.
A kind of furnace cupola of the present invention casting dust processing method, the position in that sand preparing machine system of foundry, furnace cupola are prone to produce a large amount of dust is provided with nonaqueous dust cleaner, with dust collection in the deduster dust storage container.
Embodiment 3:
A kind of furnace cupola casting of the present invention dust processing method, undertaken by following step:
(1) collects the casting dust
(1.1) produce the position of a large amount of dust in foundry, nonaqueous dust cleaner be set, with dust collection in the deduster dust storage container,
(1.2) with the dust in each deduster dust storage container, through negative pressure transportation, concentrated sending in the storage powder jar of dust blowback device;
(2) by setting flow dust is blown in the furnace cupola bed coke
(2.1) dust in the storage powder jar of aforesaid dust blowback device, the passage that is connected with conveying worm through storage powder jar lower end gets into conveying worm,
(2.2) set up to drive the rotating speed of the frequency control motor of conveying worm, make the powder sending quantity of conveying worm reach the flow of setting: 50 kilograms of one ton of iron liquid of every fusing powder sending quantities,
(2.3) discharging opening of conveying worm is communicated with the ajutage of furnace cupola, and dust is admitted to the air supply duct of furnace cupola,
(2.4) dust of entering air supply duct is dispelled by the moving air in the pipeline, is suspended in the air-supply, is the two-phase flow state, gets in furnace cupola bed coke through each air port;
(3) slag manufacturing
(3.1) adjustment adds the lime stone amount of furnace cupola, with the silica mineral composition reaction in the dust, forms the slag of certain acidity,
(3.2) slag of outflow furnace cupola, through dregs-separating device and the shunting of iron liquid, but the slag of formation comprehensive utilization of resources.
A kind of furnace cupola of the present invention casting dust processing method, the position in that sand preparing machine system of foundry, furnace cupola are prone to produce a large amount of dust is provided with nonaqueous dust cleaner, with dust collection in the deduster dust storage container.
Claims (1)
1. a furnace cupola casting dust processing method is characterized in that, is undertaken by following step:
(1) collects the casting dust
(1.1) produce the position of a large amount of dust in foundry, nonaqueous dust cleaner be set, with dust collection in the deduster dust storage container,
(1.2) with the dust in each deduster dust storage container, through negative pressure transportation, concentrated sending in the storage powder jar of dust blowback device;
(2) by setting flow dust is blown in the furnace cupola bed coke
(2.1) dust in the storage powder jar of aforesaid dust blowback device, the passage that is connected with conveying worm through storage powder jar lower end gets into conveying worm,
(2.2) set up to drive the rotating speed of the frequency control motor of conveying worm, make the powder sending quantity of conveying worm reach the flow of setting: 25～75 kilograms of one ton of iron liquid of every fusing powder sending quantities,
(2.3) discharging opening of conveying worm is communicated with the ajutage of furnace cupola, and dust is admitted to the air supply duct of furnace cupola,
(2.4) dust of entering air supply duct is dispelled by the moving air in the pipeline, is suspended in the air-supply, is the two-phase flow state, gets in furnace cupola bed coke through each air port;
(3) slag manufacturing
(3.1) adjustment adds the lime stone amount of furnace cupola, with the silica mineral composition reaction in the dust, forms the slag of certain acidity,
(3.2) slag of outflow furnace cupola, through dregs-separating device and the shunting of iron liquid, but the slag of formation comprehensive utilization of resources.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010106029787A CN102538438A (en) | 2010-12-12 | 2010-12-12 | Cupola furnace casting dust treating method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010106029787A CN102538438A (en) | 2010-12-12 | 2010-12-12 | Cupola furnace casting dust treating method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102538438A true CN102538438A (en) | 2012-07-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010106029787A Pending CN102538438A (en) | 2010-12-12 | 2010-12-12 | Cupola furnace casting dust treating method |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4000885A (en) * | 1974-11-18 | 1977-01-04 | Whiting Corporation | Cupola furnace waste gas recuperative system and method for operating same |
| WO1997036012A1 (en) * | 1996-03-27 | 1997-10-02 | Georg Fischer Disa Engineering Ag | Process for recovering and disposing of residues produced in cupola furnaces |
| CN1091243C (en) * | 1999-05-31 | 2002-09-18 | 郭耀国 | Cupola with external hot air and flue dust elimination device |
| CN2852009Y (en) * | 2005-03-20 | 2006-12-27 | 于仁先 | External heating and blowing non-lining water-cooled cupola |
| CN100414235C (en) * | 2003-08-27 | 2008-08-27 | 天津渤海化工有限责任公司天津碱厂 | Treatment method of lime kiln smoke dust pollution |
| CN201183803Y (en) * | 2008-04-28 | 2009-01-21 | 中冶华天工程技术有限公司 | Smoke dust treating apparatus for blast furnace |
-
2010
- 2010-12-12 CN CN2010106029787A patent/CN102538438A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4000885A (en) * | 1974-11-18 | 1977-01-04 | Whiting Corporation | Cupola furnace waste gas recuperative system and method for operating same |
| WO1997036012A1 (en) * | 1996-03-27 | 1997-10-02 | Georg Fischer Disa Engineering Ag | Process for recovering and disposing of residues produced in cupola furnaces |
| CN1091243C (en) * | 1999-05-31 | 2002-09-18 | 郭耀国 | Cupola with external hot air and flue dust elimination device |
| CN100414235C (en) * | 2003-08-27 | 2008-08-27 | 天津渤海化工有限责任公司天津碱厂 | Treatment method of lime kiln smoke dust pollution |
| CN2852009Y (en) * | 2005-03-20 | 2006-12-27 | 于仁先 | External heating and blowing non-lining water-cooled cupola |
| CN201183803Y (en) * | 2008-04-28 | 2009-01-21 | 中冶华天工程技术有限公司 | Smoke dust treating apparatus for blast furnace |
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Application publication date: 20120704 |