CN105603136A - Water-slag isolator for water granulated slag of blast furnace and water-slag separation method - Google Patents
Water-slag isolator for water granulated slag of blast furnace and water-slag separation method Download PDFInfo
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- CN105603136A CN105603136A CN201510840720.3A CN201510840720A CN105603136A CN 105603136 A CN105603136 A CN 105603136A CN 201510840720 A CN201510840720 A CN 201510840720A CN 105603136 A CN105603136 A CN 105603136A
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Abstract
The invention specifically relates to a water-slag isolator for water granulated slag of a blast furnace, which belongs to the field of separation equipment for water granulated slag. The water-slag isolator for water granulated slag of the blast furnace is located in a water granulated slag tank and is characterized by comprising an isolation mesh and three isolation layers located below the isolation mesh and composed of solid filler. According to the water-slag isolator, the three isolation layers with the solid filler are arranged below the isolation mesh, and after action of each isolation layer, a water suction pipe located on the bottom of the water granulated slag tank and below the isolator continuously sucks water in the water granulated slag located on the isolation layers under the action of a water suction pump, so the purpose of rapid water-slag separation is realized; and the isolator is rapid in dehydration and good in dehydration effect, enables dehydrated water granulated slag to have water content of no more than 12%, can be directly transported by using an automobile and has the advantages of low operation cost, stable operation, good reliability and reusability.
Description
Technical field
The invention belongs to grain slag separation equipment field, be specifically related to a kind of blast furnace granulated slag pulp water isolator.
Background technology
In the processes such as ironmaking and copper metallurgy, nickel, lead, zinc, can produce the slag of a large amount of high temperature fused states, the processing method of these slags roughly has two kinds: a kind of is traditional grain slag water quenching and natural cooling; The 2nd, the broken and evaporation of Bao Er Water Company of Luxembourg grain slag water. These grain slags are former is a kind of discarded object producing in smelting, if but select water quenching processing, just can make the heat of grain slag be fully utilized, turn waste into wealth.
Adopt above-mentioned grain slag water quenching, after grain slag dehydration, because the moisture content of grain slag is higher, can not transport immediately, in order to avoid the sewage in grain slag spills to road surface in transport road, affect environmental sanitation, therefore, control water grain slag field need to be set, grain slag be placed in to grain slag field control water to the moisture content of grain slag and reach requirement and just can be transported to other place, in grain slag control water process, can not realize the online disposable dehydration that completes, reach the moisture requirement transport of directly setting out on a journey.
Mainly there is following defect in above-mentioned grain slag processing method:
1, control grain slag field floor space is large, and the control water time is long, meets wind and plays dust pollution environment;
2, dewatering system maintenance is large, and labor strength is large, and operating cost is high;
3, the thermal loss of flushing cinder water in dehydration, heat energy is not all recycled.
Conventional method is that grain slag is delivered to water slag groove at present, then delivers to the condensation of granulation tower, is expelled to granulating pit, then is delivered to grain slag field control water. Above-mentioned system and method, still can not solve the high problem of special grain slag field to grain slag control water that need of moisture in grain slag.
The people such as Wang Maohua deliver " Treating Methods for BF Slag " in total the 338th phase of the 2nd phase in 2006 " Anshan iron and steel plant technology ", in this article, disclose, adopt end filter method to process blast furnace slag, its technological process is: the water under high pressure that blast furnace slag is sprayed by porous nozzle in Punched box carries out after shrend, the Water Quenching Slag shot tank of flowing through enters detritus tank, grain slag in detritus tank is caught and is deposited in the continuation dehydration of dry slag field by grab bucket, water and suspension in detritus tank flow into isolation tank by the channel of distribution, in isolation tank, lay gravel separation layer, and establish shaped steel protection, flushing cinder water after isolation is sent into cooling tower and is reused after cooling by pump pressurization through collector pipe.
In above-mentioned method, the speed that grain slag separates is still slow, generally needs the time of 3-4 days. Therefore, need to improve for above-mentioned defect, design a kind of pulp water isolator that can realize fast blast furnace granulated slag separation.
Summary of the invention
In order to solve above-mentioned technical problem, the invention provides a kind of pulp water isolator that can realize the quick separation of blast furnace granulated slag.
Object of the present invention is exactly for the existing defect of existing processed technique, and provide a kind of blast furnace granulated slag pulp water isolator, do not changing existing iron-smelting process, do not affecting under the prerequisite of ironmaking production, coordinating the online negative pressure processed of blast-furnace slag technique, pulp water isolator device is being installed in granulating pit, realizing slag separates with the quick of water, moisture content≤12% after grain slag dehydration, directly Automobile Transportation, operating cost is low, stable, good reliability, reusable.
Blast furnace granulated slag pulp water isolator of the present invention is positioned at granulating pit, and this isolator comprises separation net and is positioned at three layers of separation layer that are made up of solid filler of separation net below.
As a modification of the present invention, separation layer I, separation layer II and separation layer III that three layers of above-mentioned separation layer are set to arrange from top to bottom successively.
The thickness of separation layer I is 30-50cm, and the thickness of separation layer II is 40-60cm, and the thickness of separation layer III is 50-70cm.
Preferably, in separation layer I, be the solid filler of diameter 40-60mm; In separation layer II, it is the solid filler of diameter 60-80mm; In separation layer III, it is the solid filler of diameter 80-100mm.
Solid filler in above-mentioned separation layer I is any in steel ball, nylon ball, cobblestone;
Same, the solid filler in separation layer II is any in steel ball, nylon ball, cobblestone;
Solid filler in separation layer III is any in steel ball, nylon ball, cobblestone.
The material of separation net is DN50 steel pipe, and separation net is square frame-shaped fenestral fabric, and the specification of grid is 1m × 1m.
The method that blast furnace granulated slag pulp water isolator carries out grain slag separation, comprises following step:
Enter the slag-water slurry in granulating pit, act on layer by layer through separation layer I, separation layer II and the separation layer III of isolator, by pulsating pump and the suction hose that is arranged in granulating pit bottom, the water of above-mentioned three layers of separation layer is pumped out, realize grain slag and separate.
Beneficial effect of the present invention is, adopt isolator of the present invention, three layers of separation layer with solid filler are set below separation net, through isolation layer by layer, being positioned at suction hose below granulating pit bottom and the isolator water under separation layer being isolated under the effect of pulsating pump constantly extracts, reach and realize fast the object that pulp water separates, above-mentioned isolator dehydration rapidly, dehydrating effect is good, moisture content≤12% after grain slag dehydration, can directly pass through Automobile Transportation, and operating cost is low, stable, good reliability, reusable.
Brief description of the drawings:
Fig. 1 is a kind of blast furnace granulated slag pulp water isolator of the present invention and using method schematic diagram;
Fig. 2 is the structural representation of separation net in the present invention;
In figure, 1-granulating pit, 2-blast-furnace slag, 3 is separation net, 4-separation layer I, 5-suction hose, 6-separation layer II, 7-separation layer III.
Detailed description of the invention
Below in conjunction with specific embodiment, the present invention is further described, so that those skilled in the art more understands the present invention, but does not therefore limit the present invention.
Embodiment 1
In granulating pit 1, pulp water isolator is set, this isolator comprises separation net 3 and is positioned at three layers of separation layer of separation net 3 belows, three layers of separation layer are separation layer I 4, separation layer II 6 and the separation layer III 7 of arranging from top to bottom successively, and separation layer I 4, separation layer II 6 and separation layer III 7 are solid filler---cobblestone.
The thickness of separation layer I 4 is 40cm left and right, and the thickness of separation layer II 6 is 50cm left and right, and the thickness of separation layer III 7 is 60cm left and right.
It in separation layer I, is the solid filler of diameter 50mm left and right; It in separation layer II, is the solid filler of diameter 70mm left and right; It in separation layer III, is the solid filler of diameter 90mm left and right.
The material of separation net 3 is DN50 steel pipes, and separation net 3 is square frame-shaped fenestral fabric, and the specification of grid is 1m × 1m.
Below granulating pit 1 bottom, isolator, have suction hose 5, this suction hose 5 is connected with pulsating pump, and by pulsating pump effect, suction hose 5 pumps out the water in the separation layer of its top fast, realizes pulp water and separates.
Adopt above-mentioned pulp water isolator, can realize pulp water separates fast, the 72 hours original grain slag control water time is shortened to approximately 15 minutes by the present invention, process grain slag dewatering time short, do not need moisture content≤12%, directly Automobile Transportation after grain slag field, grain slag dehydration, in transport, grain slag does not drip, floor space is little, and operating cost is low, stable, good reliability, in dehydration, the heat of flushing cinder water can be recycled, and is a kind of energy-saving environment protecting waste processed technique.
Comparative example 1
If separation layer is set to from top to bottom: separation layer II, separation layer I, separation layer III; It in separation layer I, is the solid filler of diameter 50mm left and right; It in separation layer II, is the solid filler of diameter 70mm left and right; It in separation layer III, is the solid filler of diameter 90mm left and right.
Change the position of separation layer, in every layer of separation layer, the diameter of solid filler is constant;
Due to separation layer II is arranged on to the top, along with the carrying out of isolation, slag can be filled the space of the solid filler of separation layer II, slows down the isolation speed of pulp water; Result shows, in comparative example 1, isolation time can be than the long 30-40% of embodiment 1.
Comparative example 2
If separation layer is set to from top to bottom: separation layer III, separation layer II, separation layer I; It in separation layer I, is the solid filler of diameter 50mm left and right; It in separation layer II, is the solid filler of diameter 70mm left and right; It in separation layer III, is the solid filler of diameter 90mm left and right.
Change the position of separation layer, in every layer of separation layer, the diameter of solid filler is constant;
Result shows, in comparative example 2, isolation time can be than the long 50-60% of embodiment 1.
Comparative example 3
If separation layer is set to the thickness of 150mm, identical with embodiment 1 thickness, but in whole separation layer, only lay the solid filler that diameter is 50mm left and right; The same slag that dewaters, the time in comparative example 3 is about 1 hour; Time than embodiment 1 is long.
Comparative example 4
If separation layer is set to the thickness of 150cm, identical with embodiment 1 thickness, but in whole separation layer, only lay the solid filler that diameter is 70mm left and right; The same slag that dewaters, the time in comparative example 3 is about 2 hours; Processing time is longer than embodiment 1 far away. Analyzing, may be because solid filler diameter is larger, and slag is the easy space between solid filler of stopping up along with isolation in isolation processes, thereby slows down the speed of dehydration.
Comparative example 5
Different from comparative example 1, the thickness of separation layer I 4 is set to 25cm left and right, and the thickness of separation layer II 6 is 30cm left and right, the thickness of separation layer III 7 is 45cm left and right, the thickness of whole separation layer is 100cm, and the time of dehydration is 1.5 hours, also will be longer than the dewatering time in embodiment 1 far away.
From above contrast, can find out, the setting of separation layer of the present invention be dewatering speed the most fast. Change the diameter of solid filler or the thickness of separation layer, all can exert an influence for dewatering speed.
Claims (9)
1. blast furnace granulated slag pulp water isolator, described isolator is positioned at granulating pit, it is characterized in that, and described isolator comprises separation net and is positioned at three layers of separation layer that are made up of solid filler of separation net below.
2. blast furnace granulated slag pulp water isolator as claimed in claim 1, is characterized in that, three layers of described separation layer comprise separation layer I, separation layer II and the separation layer III of arranging from top to bottom successively.
3. blast furnace granulated slag pulp water isolator as claimed in claim 1, is characterized in that, the thickness of described separation layer I is 30-50cm, and the thickness of described separation layer II is 40-60cm, and the thickness of described separation layer III is 50-70cm.
4. blast furnace granulated slag pulp water isolator as claimed in claim 1, is characterized in that, in described separation layer I, is the solid filler of diameter 40-60mm; In described separation layer II, it is the solid filler of diameter 60-80mm; In described separation layer III, it is the solid filler of diameter 80-100mm.
5. blast furnace granulated slag pulp water isolator as claimed in claim 1, is characterized in that, the solid filler in described separation layer I is any in steel ball, nylon ball, cobblestone.
6. blast furnace granulated slag pulp water isolator as claimed in claim 1, is characterized in that, the solid filler in described separation layer II is any in steel ball, nylon ball, cobblestone.
7. blast furnace granulated slag pulp water isolator as claimed in claim 1, is characterized in that, the solid filler in described separation layer III is any in steel ball, nylon ball, cobblestone.
8. blast furnace granulated slag pulp water isolator as claimed in claim 1, is characterized in that, the material of described separation net is DN50 steel pipe, and described separation net is square frame-shaped fenestral fabric, and the specification of grid is 1m × 1m.
9. the method that adopts blast furnace granulated slag pulp water isolator as claimed in claim 1 to carry out grain slag separation, comprises following step:
Enter the slag-water slurry in granulating pit, separation layer I, separation layer II and separation layer III through isolator act on layer by layer, the water of above-mentioned three layers of separation layer being isolated by pulsating pump and the suction hose that is arranged in granulating pit bottom pumps out, and realizes grain slag and separates.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510840720.3A CN105603136A (en) | 2015-11-27 | 2015-11-27 | Water-slag isolator for water granulated slag of blast furnace and water-slag separation method |
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| CN201510840720.3A CN105603136A (en) | 2015-11-27 | 2015-11-27 | Water-slag isolator for water granulated slag of blast furnace and water-slag separation method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107285699A (en) * | 2017-07-05 | 2017-10-24 | 北京中冶设备研究设计总院有限公司 | A kind of method of preparation and use of permeable filter ball |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1824812A (en) * | 2005-07-27 | 2006-08-30 | 刘浩 | Technique and equipment for processing blast furnace smelting slag |
| CN102492796A (en) * | 2011-12-20 | 2012-06-13 | 青岛理工大学 | After heat heating system and method for filtering blast furnace slag flushing water by using bottom filter tank |
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2015
- 2015-11-27 CN CN201510840720.3A patent/CN105603136A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1824812A (en) * | 2005-07-27 | 2006-08-30 | 刘浩 | Technique and equipment for processing blast furnace smelting slag |
| CN102492796A (en) * | 2011-12-20 | 2012-06-13 | 青岛理工大学 | After heat heating system and method for filtering blast furnace slag flushing water by using bottom filter tank |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107285699A (en) * | 2017-07-05 | 2017-10-24 | 北京中冶设备研究设计总院有限公司 | A kind of method of preparation and use of permeable filter ball |
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