CN104962671A - Molten furnace slag cooling system and method - Google Patents
Molten furnace slag cooling system and method Download PDFInfo
- Publication number
- CN104962671A CN104962671A CN201510422561.5A CN201510422561A CN104962671A CN 104962671 A CN104962671 A CN 104962671A CN 201510422561 A CN201510422561 A CN 201510422561A CN 104962671 A CN104962671 A CN 104962671A
- Authority
- CN
- China
- Prior art keywords
- cooling
- granulation device
- cooling granulation
- waste gas
- grate cooler
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention relates to a molten furnace slag cooling system and method. In the cooling system, molten furnace slag and a lump material are connected with a cooling granulator feed end; a discharge end of the cooling granulator is connected with a grate-type cooling machine; an air supply pipeline of an air supply system is connected with the grate-type cooling machine and cooling granulator; a hot waste gas pipeline of a waste heat recovery system is connected with the grate-type cooling machine and cooling granulator; and the grate-type cooling machine is provided with a cooled slag discharge port. The method comprises the following steps: the molten furnace slag and lump material in a mass ratio of 1-2 enter the cooling granulator; the mixture prepared by the first step is cooled in the cooling granulator to become a solid substance, and the solid substance enters the grate-type cooling machine for continuous cooling; the air supply system enters the grate-type cooling machine and cooling granulator, and hot waste gas discharged by the grate-type cooling machine and cooling granulator enters the waste heat recovery system; and the cooled slag is discharged by the grate-type cooling machine. The system and method have the advantage of dry-type granulation, and can collect excess heat waste gas with higher quality to generate power or hot steam.
Description
Technical field
The present invention relates to a kind of method of cooling of molten slag, belong to solid waste Treatment and recovery and utilize field.
Background technology
At present, the blast furnace slag treatment process mainly water quenching granulating technique applied aborning of China.Water quenching granulating technique, is placed in water its crystallization of cooling limitation rapidly exactly, makes it be granulated under thermal stresses effect by the blast furnace slag of molten state.Obtain the grain slag of grains of sand shape after shrend, the overwhelming majority is non-crystalline state.The following shortcoming of water quenching granulating technique ubiquity: consume large water gaging; Melting slag waste heat does not reclaim; System maintenance work amount is large; The gaseous sulphide that flushing cinder produces brings atmospheric pollution; During grinding, grain slag must be dried, and still will consume the energy.
For the shortcoming of grain slag treatment process, the method for the external dry granulation blast furnace slag that just begun one's study of 20 century 70s.There are the record of researching high-temperature slag (comprising blast furnace slag, slag etc.) dry granulation technology in the states such as USSR (Union of Soviet Socialist Republics), Britain, Sweden, Germany, Japan, Australia; some methods have also carried out commerical test, but there is no one at present really realizes industrialization.Dry granulation technique is in not consumption of new water situation, utilizes blast furnace slag and heat-transfer medium directly or indirectly to contact the technique of carrying out blast furnace slag granulation and Exposure degree, does not almost have obnoxious flavour to discharge, and is a kind of eco-friendly new-type treatment process.
Dry granulation advantage compared with water quenching technology is as follows: save a large amount of water, decreases the possibility of blast simultaneously; Heat-recoverable, improves system thermal efficiency, avoids the waste of high-quality residual heat resources; Due to without the need to carrying out drying to blast furnace slag, environmental pollution can be reduced, save energy; Eliminate huge slag flushing water circulation system, maintenance workload reduces; The blast furnace slag quality of dry type granulating is good, intensity is high, is the high quality raw material producing cement.But dry granulation technology will realize industrialization also to be needed to solve following problem: granulation effect is bad, be unfavorable for continuing to utilize; Recuperated gas quality is not high, the utilization not yet in effect of high-quality thermal source; Heat recovery efficiency is on the low side; Vitrifying degree is not high, and added value is lower; Equipment running cost is high, and investment is large.In a word, though dry granulation technology reaches far away the degree of industrial application, meet the development trend of industry energy conservation environmental protection, especially have important practical significance concerning domestic water resource and energy starved situation, should development research be stepped up.
Summary of the invention
The invention provides a kind of granulation for above problem effective, recuperated gas quality is high, and heat recovery efficiency is high, and vitrifying degree is high, the cooling system of a kind of molten slag that equipment running cost is low and method.
In order to overcome the above problems the cooling system that the invention provides a kind of molten slag, it is characterized in that: comprise molten slag, lumpy material, cooling granulation device, grate cooler, air feed system, residual neat recovering system; Molten slag is connected cooling granulation device feed end with lumpy material, the discharge end of cooling granulation device connects grate cooler; The air supply line of air feed system connects grate cooler and cooling granulation device, and the hot waste gas pipeline of residual neat recovering system connects grate cooler and cooling granulation device; Grate cooler is provided with cooling slag outlet.
As a modification of the present invention, the air supply line of described air feed system connects the feed end of cooling granulation device, and the hot waste gas pipeline of residual neat recovering system connects the discharge end of cooling granulation device; Or the air supply line of air feed system connects the discharge end of cooling granulation device, the hot waste gas pipeline of residual neat recovering system connects the feed end of cooling granulation device.
As a modification of the present invention, the air supply line of described air feed system only connects grate cooler, and the hot waste gas pipeline of residual neat recovering system only connects cooling granulation device.Between grate cooler and the feed end of cooling granulation device, be provided with hot waste gas pipeline, the hot waste gas pipeline of residual neat recovering system connects the discharge end of cooling granulation device; Or hot waste gas pipeline is provided with between grate cooler and the discharge end of cooling granulation device, the hot waste gas pipeline of residual neat recovering system connects the feed end of cooling granulation device.
A method of cooling for molten slag, is characterized in that: comprise the following steps:
The first step: molten slag and lumpy material enter cooling granulation device by the mass ratio of 1 ~ 2;
Second step: the mixture obtained by the first step becomes solids after cooling in cooling granulation device, then enter grate cooler continuation cooling;
3rd step: air feed system enters grate cooler and cooling granulation device, the hot waste gas that grate cooler and cooling granulation device are discharged enters residual neat recovering system;
4th step: cooling slag is discharged by grate cooler.
As a modification of the present invention, the air feed system described in the 3rd step is entered by feed end cooling granulation device air feed, and the hot waste gas of discharging from cooling granulation device enters residual neat recovering system from the discharge end of cooling granulation device; Or the 3rd air feed system described in step cooling granulation device air feed is entered by discharge end, the hot waste gas of discharging from cooling granulation device enters residual neat recovering system from the feed end of cooling granulation device.Be be conducive to breaing up and granulation of molten slag to the feed end air feed advantage of cooling granulation device, can improve the cooling efficiency of molten slag, shortcoming is that recovery waste heat waste gas quality is not high, and just in time contrary to the discharge end air feed situation of cooling granulation device.
Improve as another kind of the present invention, the 3rd described step: air feed system only enters grate cooler, the hot waste gas that only cooling granulation device is discharged enters residual neat recovering system.The hot waste gas that described grate cooler is discharged enters cooling granulation device from the feed end of cooling granulation device, and the hot waste gas that cooling granulation device is discharged enters residual neat recovering system from the discharge end of cooling granulation device; Or the hot waste gas that described grate cooler is discharged enters cooling granulation device from the discharge end of cooling granulation device, the hot waste gas that cooling granulation device is discharged enters residual neat recovering system from the feed end of cooling granulation device.This improvement is except the corresponding feature with above-mentioned improvement, and it also has following features: comparatively large to the wind supply quantity of grate cooler air feed needs separately, corresponding air supply line diameter is large, but piping arrangement is simple simultaneously, and applicable narrow and small place is arranged and used.
The cooling slag temperature about 65 DEG C+outdoor environment temperature that grate cooler is discharged.
Lumpy material comprises coal gangue, or clay, or other lumpy materials or wherein two or more mixture, and other lumpy materials refer to the cooling slag that grate cooler (4) is discharged.
The present invention not only has the advantage of dry granulation, and can collect the higher waste heat waste gas of quality and generate electricity or production hot steam.The more important thing is, present invention also offers the mode that a kind of efficient solid waste Treatment and recovery utilizes, not only saving a large amount of places of banking up, also reduce the pollution to soil, water and air, is a kind of solid waste processing mode of environmentally friendly and resource-conserving.
Accompanying drawing explanation
The cooling system of a kind of molten slag of Fig. 1 and method technical process Fig. 1.
The cooling system of a kind of molten slag of Fig. 2 and method technical process Fig. 2.
The cooling system of a kind of molten slag of Fig. 3 and method technical process Fig. 3.
The cooling system of a kind of molten slag of Fig. 4 and method technical process Fig. 4.
Dotted portion represents that wind (air-flow) flows to, and bold portion represents flow direction of material.
Embodiment
Below in conjunction with example, the present invention is described in further detail, but embodiments of the present invention are not limited thereto.
Embodiment 1
As shown in Figure 1, 2, the invention provides a kind of cooling system of molten slag, comprise molten slag 1, lumpy material 2, cooling granulation device 3, grate cooler 4, air feed system 5, residual neat recovering system 6; Molten slag 1 is connected cooling granulation device 3 feed end with lumpy material 2, and the discharge end of cooling granulation device 3 connects grate cooler 4; The air supply line of air feed system 5 connects grate cooler 4 and cooling granulation device 3, and the hot waste gas pipeline of residual neat recovering system 6 connects grate cooler 4 and cooling granulation device 3; Grate cooler 4 is provided with cooling slag outlet.The air supply line of air feed system 5 connects the feed end of cooling granulation device 3, and the hot waste gas pipeline of residual neat recovering system 6 connects the discharge end of cooling granulation device 3; Or the air supply line of air feed system 5 connects the discharge end of cooling granulation device 3, the hot waste gas pipeline of residual neat recovering system 6 connects the feed end of cooling granulation device 3.
As shown in Figure 1, the invention provides a kind of method of cooling of molten slag, comprise the following steps:
The first step: molten slag 1 and lumpy material 2 enter cooling granulation device 3 by the mass ratio of 1 ~ 2;
Second step: mixture becomes solids after cooling in cooling granulation device 3, then enter grate cooler 4 continuation cooling;
3rd step: air feed system 5 simultaneously to grate cooler 4 and cooling granulation device 3 air feed, and is entered by feed end cooling granulation device 3 air feed, the hot waste gas that grate cooler 4 and cooling granulation device 3 are discharged enters residual neat recovering system 6;
4th step: cooling slag is discharged by grate cooler 4.
As a modification of the present invention, as Fig. 2,5 pairs of cooling granulation device 3 air feeds of the air feed system described in the 3rd step can be entered by discharge end.By comparison, be conducive to breaing up and granulation of molten slag 1 to the feed end air feed advantage of cooling granulation device 3, can improve the cooling efficiency of molten slag 1, shortcoming is that recovery waste heat waste gas quality is not high, and just in time contrary to the discharge end air feed situation of cooling granulation device 3.
Embodiment 2
As shown in Figure 3,4, the invention provides a kind of cooling system of molten slag, comprise molten slag 1, lumpy material 2, cooling granulation device 3, grate cooler 4, air feed system 5, residual neat recovering system 6; Molten slag 1 is connected cooling granulation device 3 feed end with lumpy material 2, and the discharge end of cooling granulation device 3 connects grate cooler 4; The air supply line of air feed system 5 only connects grate cooler 4, and the hot waste gas pipeline of residual neat recovering system 6 only connects cooling granulation device 3.Between grate cooler 4 and the feed end of cooling granulation device 3, be provided with hot waste gas pipeline, the hot waste gas pipeline of residual neat recovering system 6 connects the discharge end of cooling granulation device 3; Or hot waste gas pipeline is provided with between grate cooler 4 and the discharge end of cooling granulation device 3, the hot waste gas pipeline of residual neat recovering system 6 connects the feed end of cooling granulation device 3.Grate cooler 4 is provided with cooling slag outlet.
As shown in Figure 3, the invention provides a kind of method of cooling of molten slag, comprise the following steps:
The first step: molten slag 1 and lumpy material 2 enter cooling granulation device 3 by the mass ratio of 1 ~ 2;
Second step: mixture becomes solids after cooling in cooling granulation device 3, then enter grate cooler 4 continuation cooling;
3rd step: air feed system 5 is separately to grate cooler 4 air feed, and the hot waste gas that grate cooler 4 is discharged enters cooled slag from the feed end of cooling granulation device 3, and the hot waste gas that cooling granulation device 3 is discharged enters residual neat recovering system 6;
4th step: cooling slag is discharged by grate cooler 4.
Improve as another kind of the present invention, as Fig. 4, the hot waste gas that the grate cooler described in the 3rd step is discharged can enter cooled slag from the discharge end of cooling granulation device, then is expelled to residual neat recovering system.By comparison, this improvement is except having the feature of embodiment 1, and it also has following features: comparatively large to the wind supply quantity of grate cooler air feed needs separately, corresponding air supply line diameter is comparatively large, but piping arrangement is simple simultaneously, and applicable narrow and small place is arranged and used.
Embodiments of the present invention are not by the restriction of above-mentioned example; those of ordinary skill in the art is to be understood that; other any does not deviate from spirit of the present invention with the amendment made under principle or be equal to the substitute mode that replacement all should be equivalence, is included within protection scope of the present invention.
Claims (10)
1. a cooling system for molten slag, is characterized in that: comprise molten slag (1), lumpy material (2), cooling granulation device (3), grate cooler (4), air feed system (5), residual neat recovering system (6);
Molten slag (1) is connected cooling granulation device (3) feed end with lumpy material (2), and the discharge end of cooling granulation device (3) connects grate cooler (4);
The air supply line of air feed system (5) connects grate cooler (4) and cooling granulation device (3), and the hot waste gas pipeline of residual neat recovering system (6) connects grate cooler (4) and cooling granulation device (3);
Grate cooler (4) is provided with cooling slag outlet.
2. the cooling system of a kind of molten slag according to claim 1, it is characterized in that: the air supply line of air feed system (5) connects the feed end of cooling granulation device (3), the hot waste gas pipeline of residual neat recovering system (6) connects the discharge end of cooling granulation device (3); Or the air supply line of air feed system (5) connects the discharge end of cooling granulation device (3), the hot waste gas pipeline of residual neat recovering system (6) connects the feed end of cooling granulation device (3).
3. the cooling system of a kind of molten slag according to claim 1, it is characterized in that: the air supply line of air feed system (5) only connects grate cooler (4), the hot waste gas pipeline of residual neat recovering system (6) only connects cooling granulation device (3).
4. the cooling system of a kind of molten slag according to claim 3, it is characterized in that: between grate cooler (4) and the feed end of cooling granulation device (3), be provided with hot waste gas pipeline, the hot waste gas pipeline of residual neat recovering system (6) connects the discharge end of cooling granulation device (3); Or hot waste gas pipeline is provided with between grate cooler (4) and the discharge end of cooling granulation device (3), the hot waste gas pipeline of residual neat recovering system (6) connects the feed end of cooling granulation device (3).
5. a method of cooling for molten slag, is characterized in that: comprise the following steps:
The first step: molten slag (1) and lumpy material (2) enter cooling granulation device (3) by the mass ratio of 1 ~ 2;
Second step: the mixture obtained by the first step becomes solids after cooling in cooling granulation device (3), then enter grate cooler (4) continuation cooling;
3rd step: air feed system (5) enters grate cooler (4) and cooling granulation device (3), the hot waste gas that grate cooler (4) and cooling granulation device (3) are discharged enters residual neat recovering system (6);
4th step: cooling slag is discharged by grate cooler (4).
6. the method for cooling of a kind of molten slag according to claim 5, it is characterized in that: the air feed system (5) described in the 3rd step is entered by feed end cooling granulation device (3) air feed, the hot waste gas of discharging from cooling granulation device (3) enters residual neat recovering system (6) from the discharge end of cooling granulation device (3); Or the 3rd air feed system (5) described in step cooling granulation device (3) air feed is entered by discharge end, the hot waste gas of discharging from cooling granulation device (3) enters residual neat recovering system (6) from the feed end of cooling granulation device (3).
7. the method for cooling of a kind of molten slag according to claim 5, it is characterized in that: the 3rd described step: air feed system (5) only enters grate cooler (4), the hot waste gas that only cooling granulation device (3) is discharged enters residual neat recovering system (6).
8. the method for cooling of a kind of molten slag according to claim 7, it is characterized in that: the hot waste gas that described grate cooler (4) is discharged enters cooling granulation device (3) from the feed end of cooling granulation device (3), and the hot waste gas that cooling granulation device (3) is discharged enters residual neat recovering system (6) from the discharge end of cooling granulation device (3); Or the hot waste gas that described grate cooler (4) is discharged enters cooling granulation device (3) from the discharge end of cooling granulation device (3), the hot waste gas that cooling granulation device (3) is discharged enters residual neat recovering system (6) from the feed end of cooling granulation device (3).
9. a kind of method of cooling of molten slag according to claim 5 to 8 any one, is characterized in that: the cooling slag temperature about 65 DEG C+outdoor environment temperature that grate cooler (4) is discharged.
10. a kind of method of cooling of molten slag according to claim 5 to 8 any one, it is characterized in that: lumpy material (2) comprises coal gangue, or clay, or other lumpy materials or wherein two or more mixture, other lumpy materials refer to the cooling slag that grate cooler (4) is discharged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510422561.5A CN104962671A (en) | 2015-07-17 | 2015-07-17 | Molten furnace slag cooling system and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510422561.5A CN104962671A (en) | 2015-07-17 | 2015-07-17 | Molten furnace slag cooling system and method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104962671A true CN104962671A (en) | 2015-10-07 |
Family
ID=54216756
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510422561.5A Pending CN104962671A (en) | 2015-07-17 | 2015-07-17 | Molten furnace slag cooling system and method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104962671A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109402307A (en) * | 2018-11-08 | 2019-03-01 | 广东莞绿环保工程有限公司 | A kind of cold and hot steel slag mixed processing method |
| CN114993061A (en) * | 2022-05-31 | 2022-09-02 | 中航超能(苏州)科技有限公司 | Blast furnace slag forming and waste heat recovery equipment and recovery method thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4359434A (en) * | 1977-09-06 | 1982-11-16 | Svenskt Stal Aktiebolag | Process for granulating molten material |
| CN101619367A (en) * | 2009-07-28 | 2010-01-06 | 中钢集团鞍山热能研究院有限公司 | Melting iron and steel slag heat energy recovery method and device |
| CN202415574U (en) * | 2011-12-20 | 2012-09-05 | 南京凯盛开能环保能源有限公司 | Molten slag quenching and dry granulating and sensible heat recovery power generation system |
| CN103261443A (en) * | 2010-12-15 | 2013-08-21 | 保尔伍斯股份有限公司 | Granulation of metallurgical slag |
| CN104561405A (en) * | 2015-01-05 | 2015-04-29 | 攀枝花市金西能源环保科技有限公司 | Hot steel-making slag high-temperature solidification, pelletization and heat recovery method and equipment system thereof |
| CN204737972U (en) * | 2015-07-17 | 2015-11-04 | 南京凯盛国际工程有限公司 | Cooling system of melting furnace sediment |
-
2015
- 2015-07-17 CN CN201510422561.5A patent/CN104962671A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4359434A (en) * | 1977-09-06 | 1982-11-16 | Svenskt Stal Aktiebolag | Process for granulating molten material |
| CN101619367A (en) * | 2009-07-28 | 2010-01-06 | 中钢集团鞍山热能研究院有限公司 | Melting iron and steel slag heat energy recovery method and device |
| CN103261443A (en) * | 2010-12-15 | 2013-08-21 | 保尔伍斯股份有限公司 | Granulation of metallurgical slag |
| CN202415574U (en) * | 2011-12-20 | 2012-09-05 | 南京凯盛开能环保能源有限公司 | Molten slag quenching and dry granulating and sensible heat recovery power generation system |
| CN104561405A (en) * | 2015-01-05 | 2015-04-29 | 攀枝花市金西能源环保科技有限公司 | Hot steel-making slag high-temperature solidification, pelletization and heat recovery method and equipment system thereof |
| CN204737972U (en) * | 2015-07-17 | 2015-11-04 | 南京凯盛国际工程有限公司 | Cooling system of melting furnace sediment |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109402307A (en) * | 2018-11-08 | 2019-03-01 | 广东莞绿环保工程有限公司 | A kind of cold and hot steel slag mixed processing method |
| CN114993061A (en) * | 2022-05-31 | 2022-09-02 | 中航超能(苏州)科技有限公司 | Blast furnace slag forming and waste heat recovery equipment and recovery method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203128593U (en) | Efficient blast furnace slag-washing water waste heat recycling system adopting INBA process | |
| CN103060494B (en) | A kind of vapor recovery type blast furnace slag flushing water system | |
| CN103981306B (en) | The waste heat recycle method of blast furnace slag water quenching granulation and device | |
| CN202543226U (en) | Sensible heat recovery and afterheat utilization system for blast furnace slag | |
| CN105567889A (en) | Cascade utilization system for blast furnace slag waste heat | |
| CN101870560A (en) | Method for recovering waste heat of electrically fused magnesium fused weight | |
| CN103866058B (en) | Blast furnace rotary drum method using exhaust heat of slag flushing water utilizes combined supply system | |
| CN109595947B (en) | Industrial slag sensible heat recovery system and recovery method thereof | |
| CN204737972U (en) | Cooling system of melting furnace sediment | |
| CN111721135A (en) | Device and method for recovering waste heat generated by cooling and granulating high-temperature molten yellow phosphorus slag | |
| CN104962671A (en) | Molten furnace slag cooling system and method | |
| CN201637286U (en) | Sintering waste heat cascade utilization device | |
| WO2022022161A1 (en) | Integrated drying process and device for dry granulated slag and sludge | |
| CN104457299A (en) | Screw expander dragged sintering wast heat power generation system and method | |
| CN204625665U (en) | Blast furnace slag quenching water waste heat recycling heating installation | |
| CN212299974U (en) | Waste heat recovery system of lime kiln conduction oil | |
| CN203128596U (en) | Efficient blast furnace slag-washing water waste heat recycling system adopting bottom-filtration process | |
| CN103834754B (en) | Blast furnace Ming Tefa using exhaust heat of slag flushing water utilizes combined supply system | |
| CN203128597U (en) | Efficient blast furnace slag-washing water waste heat recycling system adopting mintel process | |
| CN203768383U (en) | Minter-process slag flushing water waste heat utilized triple supplying system for blast furnace | |
| CN209495571U (en) | A kind of industrial slags cement sensible heat recovery system | |
| CN103089358A (en) | Method and device for generating electricity by low-temperature residual heat of plastic production technology waste gas | |
| CN203820804U (en) | System for preheating boiler water by washing blast furnace slag water | |
| CN205156642U (en) | System for realize step recycle to carbide product sensible heat | |
| CN203768382U (en) | Combined cooling, heating and power system for blast furnace rotary drum process slag flushing water waste heat utilization |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20151007 |