CN1097469A - Granulating method and device - Google Patents
Granulating method and device Download PDFInfo
- Publication number
- CN1097469A CN1097469A CN94100184A CN94100184A CN1097469A CN 1097469 A CN1097469 A CN 1097469A CN 94100184 A CN94100184 A CN 94100184A CN 94100184 A CN94100184 A CN 94100184A CN 1097469 A CN1097469 A CN 1097469A
- Authority
- CN
- China
- Prior art keywords
- slag
- granulation
- water
- ash shoot
- stream
- 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.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 16
- 239000002893 slag Substances 0.000 claims abstract description 76
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 41
- 230000003179 granulation Effects 0.000 claims description 44
- 238000005469 granulation Methods 0.000 claims description 44
- 239000002245 particle Substances 0.000 claims description 31
- 238000001816 cooling Methods 0.000 claims description 29
- 230000035939 shock Effects 0.000 claims description 13
- 239000000203 mixture Substances 0.000 claims description 9
- 239000007921 spray Substances 0.000 claims description 6
- 230000015572 biosynthetic process Effects 0.000 claims description 5
- 230000001133 acceleration Effects 0.000 claims description 2
- 239000007788 liquid Substances 0.000 abstract description 5
- 238000004880 explosion Methods 0.000 description 3
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 229910000037 hydrogen sulfide Inorganic materials 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 241001570513 Potamogeton diversifolius Species 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 239000003818 cinder Substances 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 239000011819 refractory material Substances 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B3/00—General features in the manufacture of pig-iron
- C21B3/04—Recovery of by-products, e.g. slag
- C21B3/06—Treatment of liquid slag
- C21B3/08—Cooling slag
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B2400/00—Treatment of slags originating from iron or steel processes
- C21B2400/02—Physical or chemical treatment of slags
- C21B2400/022—Methods of cooling or quenching molten slag
- C21B2400/024—Methods of cooling or quenching molten slag with the direct use of steam or liquid coolants, e.g. water
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B2400/00—Treatment of slags originating from iron or steel processes
- C21B2400/05—Apparatus features
- C21B2400/062—Jet nozzles or pressurised fluids for cooling, fragmenting or atomising slag
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B2400/00—Treatment of slags originating from iron or steel processes
- C21B2400/05—Apparatus features
- C21B2400/066—Receptacle features where the slag is treated
- C21B2400/072—Tanks to collect the slag, e.g. water tank
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B2400/00—Treatment of slags originating from iron or steel processes
- C21B2400/05—Apparatus features
- C21B2400/066—Receptacle features where the slag is treated
- C21B2400/074—Tower structures for cooling, being confined but not sealed
Abstract
The present invention relates to the granulating method of slag, wherein liquid slag stream (22) drops on the pressurized water jet flow (50).Slag stream (22) is accelerated and expands into thin layer during through the extremity piece (46) of ash shoots (18), and this ash shoot (18) is widened and flattened, and has than the steeper obliquity of ash shoot (18).The invention still further relates to the device of realizing this method.
Description
The present invention relates to the granulating method of liquid slag, liquid slag stream is dropped on the pressurized water jet flow.
The invention still further relates to the device of realizing this method.
The method and apparatus of now existing several blast-furnace slag granulations, they are that one granulation water thread is sprayed in the slag fused stream.Usually, granulation water be through the granulation head in fact free-falling enter in the slag stream.In general, slag is directly taken out by the tap cinder groove, and an end position of ash shoot is higher than sprinkler head.The jet water stream that leaves the granulation head smashes the slag particle of slag stream and formation various size when it falls.So just formed slag particle, granulation water is gone into cooling pool by a concentrated flow.Slag particle is taken out by cooling pool, dries and store stand-by then.
Yet the use of this system shows the danger that exists blast, and this is because water has formed hydrogen when contacting with molten slag.Also formed hydrogen sulfide simultaneously, this becomes problem for work and near live in this class factory people.
The objective of the invention is to make slag granulation safer and more effective.
The objective of the invention is to rely on following slag granulation method to reach; the slag stream of supplying with in the ash shoot in this method drops on the pressurized water jet flow; it is characterized in that slag stream is dropped to an end to be widened; flatten and than on the steeper ash shoot of ash shoot obliquity, so that slag stream was quickened and expansion becomes thin layer before being poured on the jet water stream.
Within the scope of the invention, shown already that slag stream can launch effectively, and occupied the whole width of ash shoot end that because there is viewpoint to think, the product with molten slag viscosity can not occupy the whole width of ash shoot end in so short distance.
One of major advantage of the present invention is that slag stream had formed thin layer before being smashed by jet water stream.Therefore jet water stream has more easily just smashed slag stream.The slag stream cooling and almost instantaneous more promptly that forms at least in its surface solidification.
So, hydrogen and hydrogen sulfide generate lessly, generate when contacting with liquid slag because these two kinds of products mainly are water.
Because the slag layer that is crashed to pieces is very thin, the strength of granulation jet water stream can than common unit use more weak.Granulation water transfer pump and pipeline all can adopt reduced size, thereby also save.
According to first most preferred embodiment, the slag particle mixture of granulation water and formation directly sprays in the cooling pool.As can be seen, it is not seen in conventional system, and slag is poured into an ash shoot of getting slag, enters cooling pool at the end of its stroke.Slag particle cooling subsequently is rapider, because directly drop in the cold water of large volume.
According to another most preferred embodiment, the obliquity of jet water stream can be regulated with respect to horizontal axis.So just might be chosen in the shock point of interior slag particle of cooling pool and granulation water mixture.Observe, within the scope of the invention, if shock point is removed, that is to say if the obliquity of jet water stream almost is level, then the size-grade distribution of product is thinner near the situation of the granulation head obliquity of jet flow (be almost vertically downward) than shock point.
The present invention also comprises the device of realizing present method.
Ash shoot according to the inventive system comprises the supply molten slag is positioned at the granulation head under the ash shoot horizontal plane, and it is connected on the granulation water source, and the end that it is characterized in that ash shoot is widened and flattened, and it is steeper than the obliquity of ash shoot.
According to first most preferred embodiment, the pitch angle is between 5 ° and 30 °, and preferably the pitch angle is between 10 ° and 25 °, and optimum incline angle is between 12 ° and 18 °.
According to another most preferred embodiment, the granulation head is fixing in the horizontal axis mode of tilting.Therefore the obliquity of granulation head can be used as the function that desired particle size distributes, because the size-grade distribution of product can be regulated with changing granulation head and water and the distance of slag particle mixture between the cooling pool shock point.
In fact can be observed within the scope of the invention,, that is to say that if a granulation horizontal positioned, then the size-grade distribution of slag particle is thin if shock point leaves the granulation head.If the shock point of slip (being the mixture of slag particle and granulation water) is near by the granulation head, if promptly the granulation head is downward-sloping more suddenly, then the size-grade distribution of products therefrom is thicker.
Therefore, might utilize the method that changes granulation head tilt angle to influence the size-grade distribution of the product that obtains.
Cooling pool preferably has flat, an outfall and an overflow port.Water is to spray at a high speed in the cooling pool near the below horizontal and granulated slag shock point.The turbulent flow that water spray produces has quickened cooling and has prevented more or less intensive grain heap below the shock point by means of slag particle is remained on suspended state, thereby an explosion hazard that produces is avoided because the grain heap that slag particle forms when still hot absorbs water.
Flat the going up that is preferably in cooling pool is provided with hyoplastron or raised line with fixed spacing.Like this, slag particle piles one deck that thickness approximates the hyoplastron height greatly, has prevented the bottom of cooling pool owing to be in the abrasion of suspended state slag particle.
Obviously, the present invention also can be used for the granulation of other melts such as matte and waste residue etc.
Other characteristics and feature can be by the detailed descriptions of the most preferred embodiment of a following unrestricted example and in conjunction with understanding with reference to the accompanying drawings, in the accompanying drawing:
Fig. 1 illustrates total figure of granulating device;
Fig. 2 illustrates the longitudinal view that slag is guided to the ash shoot in the granulating device;
Fig. 3 illustrates along the drawing in side sectional elevation of Fig. 2 plane A-A;
Fig. 4 illustrates along the drawing in side sectional elevation of Fig. 2 plane B-B;
Fig. 5 illustrates the vertical view of ash shoot.
Granulating device 10 shown in Fig. 1 comprises ash shoot 18, one granulations 26 and one cooling pool 30 of a flue 14, one supply slags 22.Cooling pool 30 comprises that the protection of a water spouting nozzle 34, one band rasters is used to discharge pond outlet 38 and one overflow port 42 of slag particle.
The slag 22 that is taken out by blast furnace enters granulating device 10 by ash shoot 18.At end portion 46, the mobile acceleration of slag 22 and expand into skim, free-falling is in cooling pool 30.When slag when landing stream, the intensive jet water stream 50 that slag layer 22 is left granulation 26 smashes.The slag particle that forms when the slag thin layer smashes directly falls in the cooling pool 30, rapidly cooling.There are one intensive current to spray in the cooling pool 30 by nozzle 34.The turbulent flow that slag particle is produced by current remains on suspended state for some time, takes out by bleed outlet 38 at last and delivers to dewatering unit.
At full speed water being sprayed into the effect that enters cooling pool under the horizontal plane, is to have prevented that slag particle from depositing below shock point, in order to avoid form more or less intensive grain heap.Because slag particle forms an explosion hazard that the heap suction produces thereby is avoided when still hot.
The turbulent flow that produces in cooling pool 30 has improved slag particle refrigerative speed and has helped the motion of slag particle to the bleed outlet 38 of collecting slag particle.
The water tank flat bottoms is provided with tongue bars 58 with fixed intervals, along the whole width extension of cooling pool.The slag particle layer that thickness approximates the tongue bars height is greatly formed on the bottom at cooling pool.This slag particle layer can prevent at the bottom of the cooling pool that the slag particle that passive movement not denudes.
Fig. 2 illustrates the longitudinal view of ash shoot 18.This figure clearly illustrates the obliquity that ash shoot end 46 is strengthened.
Fig. 3 illustrates the drawing in side sectional elevation of ash shoot 18 along the first part that Fig. 2 midplane A-A cuts.Ash shoot 18 has slag 22 mobile passages 62.The refractory materials 66 that passage 62 usefulness are suitable is made, and is positioned at high temperature steel housing 70.
Fig. 4 illustrates the drawing in side sectional elevation that the end 46 of ash shoot 18 cuts along Fig. 2 midplane B-B.As can be seen, ash shoot 62 is significantly widened, and slag layer 22 is much thinner than shown in Figure 3.The thin fact of slag blanket when the jet water stream 50 that is left granulation 26 smashes makes the security that might improve device.It is thin more to be actually slag blanket, and molten slag is more little to the danger of absorbed inside water.If water is absorbed in the liquid slag, then slag blanket can flash evaporation set off an explosion.
Fig. 5 illustrates the vertical view of ash shoot 18 and extremity piece 46, and the passage 62 in the extremity piece 46 is widened gradually as can be seen.
Claims (11)
1, a kind of slag granulation method; wherein the slag stream (22) of ash shoot (18) supply drops on the pressurized water jet flow (50); it is characterized in that slag stream (22) is dropped to an end (46) to be widened; flatten and than on the steeper ash shoot (18) of original ash shoot (18) obliquity; so that make slag stream (22) before being poured on the jet water stream (50), acceleration and expansion become thin layer.
2,, it is characterized in that the mixture of granulation water (50) and formation slag particle directly sprays in the cooling pool (30) according to the described granulating method of claim 1.
3,, it is characterized in that the obliquity of jet water stream can center on transverse axis (54) adjusting according to claim 1 or 2 described granulating methods.
4,, it is characterized in that near the shock point of water with the mixture of the slag particle that sprays at a high speed granulation water below interior the horizontal plane of cooling pool (30) and formation according to claim 2 and 3 described granulating methods.
5, realize pressing the device of the described method of claim 1; this device has the ash shoot (18) of supply molten slag; be positioned at the granulation head (26) that is connected with granulation water source of supply below ash shoot (18) sea line; the extremity piece (46) that it is characterized in that ash shoot (18) is widened and is flattened, and its obliquity is steeper than ash shoot (18).
6, according to the described device of claim 5, the angle of inclination of extremity piece (46) that it is characterized in that ash shoot (18) is between 5 ° and 30 °.
7, according to the described device of claim 6, the angle of inclination of extremity piece (46) that it is characterized in that ash shoot (18) is preferably between 12 ° and 18 ° between 10 ° and 25 °.
8,, it is characterized in that granulation head (26) has a transverse axis (54) that makes granulation head (26) can center on its inclination according to any one described device of claim 5 to 7.
9,, it is characterized in that granulation water and slag particle mixture can directly be poured in the granulation pond (30) according to any one described device of claim 5 to 8.
10,, it is characterized in that flat cooling pool (30) has near the water spouting nozzle (34) that is positioned at the following and mixture shock point of horizontal plane according to the described device of claim 9.
11,, it is characterized in that knowing plate (58) or raised line with fixed intervals being provided with in the bottom of cooling pool (30) according to the described device of claim 10.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| LULU88380 | 1993-07-14 | ||
| LU88380A LU88380A1 (en) | 1993-07-14 | 1993-07-14 | Granulation process and device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1097469A true CN1097469A (en) | 1995-01-18 |
| CN1038602C CN1038602C (en) | 1998-06-03 |
Family
ID=19731426
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN94100184A Expired - Fee Related CN1038602C (en) | 1993-07-14 | 1994-01-05 | granulation method and device |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN1038602C (en) |
| LU (1) | LU88380A1 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102030489A (en) * | 2009-09-30 | 2011-04-27 | 保尔伍斯股份有限公司 | Granulating device for granular melt, in particular for matte or ion-making slag |
| CN101643326B (en) * | 2008-08-07 | 2011-12-14 | 大地亮环保服务有限公司 | Device and method for post treatment of slag mud |
| CN102864252A (en) * | 2012-09-13 | 2013-01-09 | 清华大学 | Slag granulation and sensible heat recovery method and system |
| CN103261443A (en) * | 2010-12-15 | 2013-08-21 | 保尔伍斯股份有限公司 | Granulation of metallurgical slag |
| CN108300823A (en) * | 2017-09-27 | 2018-07-20 | 中能立化科技有限公司 | A kind of slag stream conveying device and slag granulating take hot systems |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1312295C (en) * | 2005-06-23 | 2007-04-25 | 天津市隆安冶金机械厂 | Blast furnace slag flushing technology by pneumatic lifting runner and its flushing device |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN88211276U (en) * | 1988-05-06 | 1988-12-21 | 马鞍山钢铁公司 | Wind power granulating device for steel dross |
| GB9914150D0 (en) * | 1999-06-18 | 1999-08-18 | Rotech Holdings Limited | Improved pump |
-
1993
- 1993-07-14 LU LU88380A patent/LU88380A1/en unknown
-
1994
- 1994-01-05 CN CN94100184A patent/CN1038602C/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101643326B (en) * | 2008-08-07 | 2011-12-14 | 大地亮环保服务有限公司 | Device and method for post treatment of slag mud |
| CN102030489A (en) * | 2009-09-30 | 2011-04-27 | 保尔伍斯股份有限公司 | Granulating device for granular melt, in particular for matte or ion-making slag |
| CN102030489B (en) * | 2009-09-30 | 2014-10-01 | 保尔伍斯股份有限公司 | Granulating device for granular melt, in particular for matte or ion-making slag |
| CN103261443A (en) * | 2010-12-15 | 2013-08-21 | 保尔伍斯股份有限公司 | Granulation of metallurgical slag |
| US9371571B2 (en) | 2010-12-15 | 2016-06-21 | Paul Wurth S.A. | Granulation of metallurgical slag |
| CN103261443B (en) * | 2010-12-15 | 2016-06-22 | 保尔伍斯股份有限公司 | The granulation of metallurgical slag |
| CN102864252A (en) * | 2012-09-13 | 2013-01-09 | 清华大学 | Slag granulation and sensible heat recovery method and system |
| CN102864252B (en) * | 2012-09-13 | 2014-02-19 | 清华大学 | Slag granulation and sensible heat recovery method and system |
| CN108300823A (en) * | 2017-09-27 | 2018-07-20 | 中能立化科技有限公司 | A kind of slag stream conveying device and slag granulating take hot systems |
Also Published As
| Publication number | Publication date |
|---|---|
| LU88380A1 (en) | 1995-02-01 |
| CN1038602C (en) | 1998-06-03 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 19980603 Termination date: 20120105 |