CN109180029A - A kind of liquid slag comminution granulation - Google Patents
A kind of liquid slag comminution granulation Download PDFInfo
- Publication number
- CN109180029A CN109180029A CN201811066398.3A CN201811066398A CN109180029A CN 109180029 A CN109180029 A CN 109180029A CN 201811066398 A CN201811066398 A CN 201811066398A CN 109180029 A CN109180029 A CN 109180029A
- Authority
- CN
- China
- Prior art keywords
- slag
- liquid slag
- cylinder
- solid block
- clinker
- 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
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- 239000002893 slag Substances 0.000 title claims abstract description 120
- 239000007788 liquid Substances 0.000 title claims abstract description 75
- 230000003179 granulation Effects 0.000 title claims abstract description 28
- 238000005469 granulation Methods 0.000 title claims abstract description 28
- 239000007787 solid Substances 0.000 claims abstract description 69
- 239000002245 particle Substances 0.000 claims abstract description 27
- 238000001816 cooling Methods 0.000 claims abstract description 23
- 238000010521 absorption reaction Methods 0.000 claims abstract description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 9
- 238000012216 screening Methods 0.000 claims description 3
- 239000000463 material Substances 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 9
- 239000000428 dust Substances 0.000 abstract description 2
- 238000005265 energy consumption Methods 0.000 abstract description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 2
- 230000036760 body temperature Effects 0.000 description 2
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 2
- 239000000920 calcium hydroxide Substances 0.000 description 2
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 2
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 description 2
- 239000000292 calcium oxide Substances 0.000 description 2
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000004901 spalling Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- JHLNERQLKQQLRZ-UHFFFAOYSA-N calcium silicate Chemical group [Ca+2].[Ca+2].[O-][Si]([O-])([O-])[O-] JHLNERQLKQQLRZ-UHFFFAOYSA-N 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003818 cinder Substances 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000013467 fragmentation Methods 0.000 description 1
- 238000006062 fragmentation reaction Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 238000007885 magnetic separation Methods 0.000 description 1
- 230000035800 maturation Effects 0.000 description 1
- 235000013372 meat Nutrition 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000010025 steaming Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 230000032258 transport Effects 0.000 description 1
- 239000002918 waste heat Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B5/00—Treatment of metallurgical slag ; Artificial stone from molten metallurgical slag
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Furnace Details (AREA)
Abstract
The invention belongs to slag treatment technical fields, disclose a kind of liquid slag comminution granulation.The liquid slag comminution granulation is the following steps are included: the following steps are included: liquid slag and solid block through cooling and solidifying are poured into cylinder jointly, liquid slag can be filled in the gap of solid block, so that liquid slag cools down, and form clinker identical with the gap volume of solid block；It is passed through cold air heat absorption from bottom to up into cylinder, clinker is made gradually to be fragmented into particle slag.The present invention exchanges heat first with solid block and liquid slag, form clinker identical with the gap volume of solid block, then into cylinder from bottom to top be passed through cold air further with clinker heat convection, further decrease its temperature, formed internal stress so that clinker is fragmented into particle slag, above-mentioned comminution granulation technique, equipment are simple, and its granulation efficiency is high, the discharge of no dust and the steam containing nuisance is invested small, low energy consumption, and operating cost is low.
Description
Technical field
The present invention relates to slag treatment technical field more particularly to a kind of liquid slag comminution granulations.
Background technique
The liquid slag granulating technique of existing practical application has:
One, hot application method
Melting melt cinder is splashed onto slag-bed, and sprays suitable quantity of water to it, makes high temperature furnace slag rapid cooling fragmentation, then uses
Loading machine excavates entrucking, is transported to Dumping Sites or Slag treatment workshop, then is crushed, sieved and the process such as magnetic separation.This method work
Skill equipment is simple, technology maturation, but takes up a large area, seriously polluted, and treated, and steel slag stability is poor.
Two, (tank) comminution granulation is cheated in slag stewing
Liquid slag is poured into slag stewing hole (tank), sprinkle water cooling on slag surface and shuts lid, the steam formed by cooling water
Stewing steaming is carried out to slag, and generates calcium hydroxide, calcium hydroxide volume expansion, thus will with free calcium oxide reaction a small amount of in slag
Slag is split up and rises broken.The process flow of this method is long, investment is big, processing cost is high, especially steam with it is free in high temperature sludge
While calcium oxide reacts, meeting pyrolytic is at hydrogen and oxygen, and there are the hidden danger of hydrogen explosion.
It would therefore be highly desirable to need to provide a kind of novel melting slag comminution granulation to solve the above problems.
Summary of the invention
The purpose of the present invention is to provide a kind of liquid slag comminution granulations, there is granulation effect to solve existing liquid slag comminution granulation
The low problem of rate.
To achieve this purpose, the present invention adopts the following technical scheme:
A kind of liquid slag comminution granulation, comprising the following steps:
Liquid slag and the solid block through cooling and solidifying are poured into cylinder jointly, liquid slag can be filled in solid block
In gap, so that liquid slag cools down, and clinker identical with the gap volume of solid block is formed；
It is passed through cold air heat absorption from bottom to up into cylinder, clinker is made gradually to be fragmented into particle slag.
Preferably, further including to cylinder water cooling, to liquid slag indirect water-cooling.
Preferably, cylinder includes internal jacket and external jacket, liquid slag can be accommodated by being formed between internal jacket and external jacket
With the cavity of solid block, liquid slag and solid block are poured into cavity, and by water be passed through in internal jacket and external jacket in, with
To the liquid slag indirect water-cooling in cavity.
Preferably, further including being put into cylinder admittedly before pouring into liquid slag and solid block in cylinder jointly
Body clinker, to prevent liquid slag from flowing directly into cylinder body bottom, and extend liquid slag respectively with solid block, cold air, inner clip
Heat-exchange time between set and external jacket.
Preferably, being continuously agitated to the intracorporal liquid slag of cylinder and solid block, after liquid slag becomes clinker again
All become particle slag.
Preferably, by the particle slag for falling into cylinder body bottom and consolidating when the temperature of cylinder body bottom is reduced to preset temperature
Body block removes cylinder, at the same continuously add into cylinder with the liquid slag of the particle slag and solid block equivalent that remove cylinder and
Solid block.
Preferably, the particle slag and solid block that are moved out of cylinder are after screening, partial size is isolated greater than predetermined size
Particle slag and solid block, and the particle slag and solid block isolated are continued to pour into cylinder, to realize continuous granulation.
Beneficial effects of the present invention:
The present invention exchanges heat first with solid block and liquid slag, forms clinker identical with the gap volume of solid block,
Then into cylinder from bottom to top be passed through cold air further with clinker heat convection, further decrease its temperature, formed
For internal stress so that clinker is fragmented into particle slag, above-mentioned comminution granulation technique, equipment are simple, and its granulation efficiency is high, no dust and contain
The discharge of nuisance steam, investment is small, and low energy consumption, and operating cost is low.
Detailed description of the invention
Fig. 1 is the flow diagram of liquid slag comminution granulation provided by the invention.
Specific embodiment
To further illustrate the technical scheme of the present invention below with reference to the accompanying drawings and specific embodiments.
As shown in Figure 1, it is a kind of flow diagram of liquid slag comminution granulation provided by the invention.The liquid slag comminution granulation
The following steps are included:
S1, liquid slag and solid block through cooling and solidifying are poured into cylinder jointly, the liquid slag can be filled in institute
It states in the gap of solid block, so that the liquid slag cools down, and forms slag identical with the gap volume of the solid block
Block:
Cylinder can be the cylinder of the waste-heat recovery device of this field routine, be also possible to be generally used for holding liquid slag
Barrel type apparatus, preferably perpendicular barrel type apparatus.There are gap between solid block, liquid slag can be infiltrated through in the gap, and with it is solid
Body block is conducted heat rapidly, and while solid block heats up, liquid slag cooling is formed and solid block gap volume phase until solidification
Same or similar clinker.
S2, it is passed through cold air heat absorption from bottom to up into cylinder, clinker is made gradually to be fragmented into particle slag:
Cold air is preferably high speed cold air, and high speed cold air is passed through in cylinder, and high speed cold air can penetrate into solid
Its temperature further is further decreased with clinker heat convection in the crack of block, and makes clinker gradually spalling becomes
Grain slag.
Specifically, to guarantee that the different clinker of cylinder body temperature is (being formed by liquid slag with solid block gap body
Solid clinker product identical clinker and be put into cylinder in advance) it exchanges heat sufficiently, by using set on the intracorporal mixing plant of cylinder
To liquid slag, solid block, the clinker identical with the gap volume of solid block of formation and in advance it is put into solid in cylinder
Clinker is continuously agitated, until liquid slag all becomes particle slag after becoming clinker again.
Specifically, liquid slag comminution granulation further include to cylinder water cooling, promote liquid slag be quenched and solidified to be formed tool it is crannied
Clinker, cold air can enter in the crack of clinker.The cylinder includes internal jacket and external jacket, is formed between internal jacket and external jacket
The cavity that liquid slag and solid block can be accommodated, liquid slag and solid block are poured into cavity, and water is passed through internal jacket
It neutralizes in external jacket, it is a large amount of in cooling meat power and slag be quenched and solidified liquid slag to the liquid slag indirect water-cooling in cavity
The cooling crystal transfer volume expansion of dicalcium silicate forms internal stress, and cooling velocity is faster, and internal stress is bigger, and internal stress will solidify
Clinker spalling afterwards forms crack.
It specifically, further include that a certain amount of solid clinker through cooling and solidifying is put into cylinder before S1 step.Work as temperature
It spends higher liquid slag to pour into the cylinder for being contained with the clinker of the solid through cooling and solidifying, liquid slag may make to penetrate into solid slag
In gap between block, conduct heat with solid clinker rapidly, so that solid clinker heats up, liquid slag cooling.And it is put into cylinder in advance
Solid clinker in body also acts and can prevent liquid slag from flowing directly into cylinder body bottom, and extend liquid slag respectively with solid
The effect of heat-exchange time between block, cold air, internal jacket and external jacket.
To sum up, the present invention makes to melt by toppling over the solid block through cooling and solidifying into cylinder simultaneously with liquid slag
Slag heat exchange cooling for the first time；It into after cylinder, is contacted with the solid clinker being put into cylinder in advance, carries out second of heat exchange drop
Temperature；Then cooled down using the water in cylinder internal jacket and external jacket to liquid slag third time heat exchange；Cold sky is passed through into cylinder again
Gas drops its 4th time heat exchange so that air enters in the crack of clinker identical with solid block gap volume that is being formed
Temperature；Clinkers finally different to cylinder body temperature are kept stirring, and keep the intracorporal clinker heat exchange of cylinder more abundant, until cylinder is intracorporal
Liquid slag all becomes particle slag after becoming clinker again.
Specifically, it is equipped with temperature sensor in cylinder body bottom, when the temperature of temperature sensor monitoring cylinder body bottom is reduced to
When preset temperature (it is believed that the clinker of cylinder body bottom all becomes particle slag), by the particle slag for falling into cylinder body bottom and consolidate
Body block removes cylinder, and the solid granulates of cylinder body bottom are constantly removed, and the spare space at the top of cylinder will necessarily be gradually increased, and be
It realizes that continuously liquid slag is granulated, while continuously adding particle slag and solid block equivalent with removal cylinder into cylinder
Liquid slag and solid block.
More specifically, the particle slag and solid block for being moved out of cylinder after screening, isolate partial size and are greater than default grain
The particle slag and solid block of diameter, and the particle slag and solid block isolated are continued to pour into cylinder, it is continuously made with realizing
Grain；And partial size is less than the particle slag of predetermined size and solid block transports consumer market to for engineer application.
Obviously, the above embodiment of the present invention is just for the sake of clearly illustrating examples made by the present invention, and being not is pair
The restriction of embodiments of the present invention.For the ordinary skill user of fields, may be used also on the basis of the above description
To make other variations or changes in different ways.There is no necessity and possibility to exhaust all the enbodiments.It is all this
Made any modifications, equivalent replacements, and improvements etc., should be included in the claims in the present invention within the spirit and principle of invention
Protection scope within.
Claims (7)
1. a kind of liquid slag comminution granulation, which comprises the following steps:
Liquid slag and the solid block through cooling and solidifying are poured into cylinder jointly, the liquid slag can be filled in the solid block
In the gap of material, so that the liquid slag cools down, and clinker identical with the gap volume of the solid block is formed；
It is passed through cold air heat absorption from bottom to up into the cylinder, the clinker is made gradually to be fragmented into particle slag.
2. liquid slag comminution granulation according to claim 1, which is characterized in that further include to the cylinder water cooling, to institute
State liquid slag indirect water-cooling.
3. liquid slag comminution granulation according to claim 2, which is characterized in that the cylinder includes internal jacket and external jacket,
The cavity that can accommodate the liquid slag and the solid block is formed between the internal jacket and the external jacket, it will be described molten
Melt slag and the solid block is poured into the cavity, and water is passed through the internal jacket and is neutralized in the external jacket, to institute
State the liquid slag indirect water-cooling in cavity.
4. liquid slag comminution granulation according to claim 3, which is characterized in that described by liquid slag and the solid block
Further include that solid clinker is put into the cylinder before being poured into cylinder jointly, with prevent the liquid slag flow directly into
The cylinder body bottom, and extend the liquid slag respectively with the solid block, the cold air, the internal jacket and described outer
Heat-exchange time between collet.
5. liquid slag comminution granulation according to claim 4, which is characterized in that the liquid slag intracorporal to the cylinder, institute
Solid block, the clinker identical with the gap volume of the solid block formed and the solid clinker is stated to be continuously agitated,
Until the liquid slag all becomes particle slag after becoming clinker again.
6. liquid slag comminution granulation according to claim 5, which is characterized in that when the temperature of the cylinder body bottom be reduced to it is pre-
If when temperature, the particle slag and the solid block that will fall into the cylinder body bottom remove the cylinder, while to described
The liquid slag and solid block with the particle slag and the solid block equivalent that remove the cylinder are continuously added in cylinder.
7. liquid slag comminution granulation according to claim 6, which is characterized in that be moved out of the cylinder the particle slag and
The solid block after screening, isolates the particle slag of the partial size greater than predetermined size and the solid block, and will divide
The particle slag separated out and the solid block continue to pour into the cylinder, to realize continuous granulation.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811066398.3A CN109180029A (en) | 2018-09-13 | 2018-09-13 | A kind of liquid slag comminution granulation |
| PCT/CN2018/115146 WO2019174287A1 (en) | 2018-03-16 | 2018-11-13 | Slag residual heat utilization device and molten slag granulation method |
| JP2020554348A JP7179868B2 (en) | 2018-03-16 | 2018-11-13 | Slag residual heat utilization device and molten slag granulation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811066398.3A CN109180029A (en) | 2018-09-13 | 2018-09-13 | A kind of liquid slag comminution granulation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109180029A true CN109180029A (en) | 2019-01-11 |
Family
ID=64910482
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811066398.3A Pending CN109180029A (en) | 2018-03-16 | 2018-09-13 | A kind of liquid slag comminution granulation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109180029A (en) |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101402885A (en) * | 2008-11-14 | 2009-04-08 | 昆明理工大学 | Method for gasifying inflammable solid waste and producing liquid fuel with high-temperature metallurgy liquid slag |
| JP2009227495A (en) * | 2008-03-20 | 2009-10-08 | Jfe Steel Corp | Method for treating slag |
| 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 |
| CN105112577A (en) * | 2015-09-30 | 2015-12-02 | 东北大学 | Dry granulating blast furnace slag waste heat recovery device and blast furnace slag waste heat recovery method |
| CN105258515A (en) * | 2015-11-09 | 2016-01-20 | 郭瑛 | Apparatus and method for recovering steelmaking slag afterheat of electric arc furnace |
| CN206570358U (en) * | 2017-03-15 | 2017-10-20 | 湖南思为能源环保工程有限公司 | A kind of high temperature furnace slag wind quenching is granulated fluidized-bed combustion boiler waste-heat recovery device |
| CN107287370A (en) * | 2017-06-14 | 2017-10-24 | 东北大学 | Dry granulation reclaims " double to quench " apparatus and method of blast furnace slag waste heat |
| CN107806769A (en) * | 2017-09-05 | 2018-03-16 | 天津大学 | A kind of heat energy recycle method and device of fusion metallurgy slag |
| CN107816898A (en) * | 2017-11-21 | 2018-03-20 | 中山蓝冰节能环保科技有限公司 | Clinker heat-exchanger rig and the high temperature exhaust-heat recovery unit comprising the device |
| CN107990740A (en) * | 2017-11-28 | 2018-05-04 | 北京科技大学 | The equipment that blast furnace slag wind quenching granulated particles waste heat for supplying is utilized based on flash evaporation technology |
| CN207727098U (en) * | 2017-11-21 | 2018-08-14 | 中山蓝冰节能环保科技有限公司 | Clinker wind quenching granulating device |
-
2018
- 2018-09-13 CN CN201811066398.3A patent/CN109180029A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009227495A (en) * | 2008-03-20 | 2009-10-08 | Jfe Steel Corp | Method for treating slag |
| CN101402885A (en) * | 2008-11-14 | 2009-04-08 | 昆明理工大学 | Method for gasifying inflammable solid waste and producing liquid fuel with high-temperature metallurgy liquid slag |
| 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 |
| CN105112577A (en) * | 2015-09-30 | 2015-12-02 | 东北大学 | Dry granulating blast furnace slag waste heat recovery device and blast furnace slag waste heat recovery method |
| CN105258515A (en) * | 2015-11-09 | 2016-01-20 | 郭瑛 | Apparatus and method for recovering steelmaking slag afterheat of electric arc furnace |
| CN206570358U (en) * | 2017-03-15 | 2017-10-20 | 湖南思为能源环保工程有限公司 | A kind of high temperature furnace slag wind quenching is granulated fluidized-bed combustion boiler waste-heat recovery device |
| CN107287370A (en) * | 2017-06-14 | 2017-10-24 | 东北大学 | Dry granulation reclaims " double to quench " apparatus and method of blast furnace slag waste heat |
| CN107806769A (en) * | 2017-09-05 | 2018-03-16 | 天津大学 | A kind of heat energy recycle method and device of fusion metallurgy slag |
| CN107816898A (en) * | 2017-11-21 | 2018-03-20 | 中山蓝冰节能环保科技有限公司 | Clinker heat-exchanger rig and the high temperature exhaust-heat recovery unit comprising the device |
| CN207727098U (en) * | 2017-11-21 | 2018-08-14 | 中山蓝冰节能环保科技有限公司 | Clinker wind quenching granulating device |
| CN107990740A (en) * | 2017-11-28 | 2018-05-04 | 北京科技大学 | The equipment that blast furnace slag wind quenching granulated particles waste heat for supplying is utilized based on flash evaporation technology |
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| PB01 | Publication | ||
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Application publication date: 20190111 |