CN103525958B - A kind of without granulation pump-type high temperature furnace slag water quenching technology and system - Google Patents
A kind of without granulation pump-type high temperature furnace slag water quenching technology and system Download PDFInfo
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- CN103525958B CN103525958B CN201310528940.3A CN201310528940A CN103525958B CN 103525958 B CN103525958 B CN 103525958B CN 201310528940 A CN201310528940 A CN 201310528940A CN 103525958 B CN103525958 B CN 103525958B
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 137
- 238000005469 granulation Methods 0.000 title claims abstract description 81
- 230000003179 granulation Effects 0.000 title claims abstract description 81
- 239000002893 slag Substances 0.000 title claims abstract description 52
- 238000010791 quenching Methods 0.000 title claims abstract description 20
- 230000000171 quenching effect Effects 0.000 title claims abstract description 20
- 238000005516 engineering process Methods 0.000 title claims abstract description 14
- 239000000498 cooling water Substances 0.000 claims abstract description 21
- 239000002002 slurry Substances 0.000 claims abstract description 19
- 238000000034 method Methods 0.000 claims abstract description 13
- 238000001816 cooling Methods 0.000 claims abstract description 11
- 238000002347 injection Methods 0.000 claims description 5
- 239000007924 injection Substances 0.000 claims description 5
- 239000007788 liquid Substances 0.000 claims description 5
- 239000007921 spray Substances 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 4
- 238000005265 energy consumption Methods 0.000 description 2
- 238000003723 Smelting Methods 0.000 description 1
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 239000003818 cinder Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
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Abstract
The invention discloses a kind of without granulation pump-type high temperature furnace slag water quenching technology and system. This technique includes: after being separated with separating device for water with dregs by the slag-water slurry formed by high temperature furnace slag shrend; take isolated water and input the pond directly connected with granulation box as cooling water circulation use, and also make the height of water between pond and granulation box be enough to make the cooling water pressure in granulation box more than the lower limit of granulation box normal operation. Preferably, described pond needs certain capacity, or and is provided with dividing wall type heat exchanger. This system includes granulation box, separating device for water with dregs, pond etc. Utilize the design of the present invention, it is not necessary to by means of forced draft cooling, can conveniently reach granulation water pressure desired value and cycle operation water temperature controls, reach the effects such as energy-conserving and environment-protective.
Description
Technical field
The invention discloses a kind of high temperature furnace slag water quenching technology, particularly to a kind of without granulation pump-type high temperature furnace slag water quenching technology and system, belong to technical field of metallurgy industry.
Background technology
At present, high temperature furnace slag water quenching technology is mainly made up of granulation box, granulation pond, separating device for water with dregs, cooling tower, water circulation system etc. High temperature furnace slag, from flowing to granulation box front end, is granulated case injection cooling water rapid cooling water and quenches into grain slag, form slag-water slurry, and grain slag is separated with water by slag-water slurry by separating device for water with dregs, and grain slag is transported to stockyard, and water then recycles after cooling.
But there is many defects in previous process, for instance:
(1) granulation water is provided power by centrifugal pump; and the changes in flow rate scope of slag is bigger in smelting process; system generally arranges separate unit and runs and two parallel running two ways, adds the diversity of performance of centrifugal pump parameter, and granulation box actual hydraulic pressure is more with desired value deviation. For guaranteeing that hydraulic pressure is not less than the lower limit of granulation box normal operation, it is generally required to strengthen the type selecting of granulation pump, cause that system energy consumption is higher, and bring the problems such as grain slag granularity little, pulp water inferior separating effect, increase system wear. Such as, technological requirement granulation water pressure > 0.2Mpa, and the pressure being granulated pump reaches 0.35Mpa.
(2) granulation supplies water and granulation backwater two-stage power, and system energy consumption is higher;
(3) water system cooling capacity is inadequate, and in cycle operation process, to raise trend obvious for water temperature, have even up to more than 90 DEG C, in slag, contained sulfide emission is not effectively controlled.
Summary of the invention
Present invention is primarily targeted at for the deficiencies in the prior art, it is provided that a kind of without granulation pump-type high temperature furnace slag water quenching technology and system, its granulation water supply that can realize pressure stability controls with cycle operation water temperature, reaches the effects such as energy-conserving and environment-protective.
For achieving the above object, present invention employs following technical scheme:
A kind of without granulation pump-type high temperature furnace slag water quenching system, including:
Granulation box, in order to spray cooling water-cooled but high temperature furnace slag thus forming slag-water slurry,
Separating device for water with dregs, in order to slag-water slurry to be separated into grain slag and water, and,
Pond, in order to collect by water isolated in slag-water slurry;
Wherein, described pond directly connects with granulation box through pipeline valve group, and, the actual height of water controlled between liquid level and granulation box in described pond is enough to make the cooling water pressure in granulation box more than the lower limit of granulation box normal operation.
As comparatively one of preferred embodiment, described pond needs certain capacity, limit one duty cycle water system cycle-index so that granulation box water temperature is less than 60 DEG C; And/or, in described pond, dividing wall type heat exchanger is installed, so that granulation box water temperature is less than 60 DEG C.
Further, the described shot tank also including without granulation pump-type high temperature furnace slag water quenching system collecting slag-water slurry, described shot tank connects with separating device for water with dregs.
Further, described separating device for water with dregs is placed in above collecting-tank, and water is inputted pond through back water pump by described collecting-tank.
Further, without forced draught cooling arrangement in described water quenching system, granulation water-cooled is but realized by system no-load run, or and installs dividing wall type heat exchanger.
Further, described separating device for water with dregs includes dewatering drum.
A kind of without granulation pump-type high temperature furnace slag water quenching technology, including:
After the slag-water slurry formed by high temperature furnace slag shrend is separated with separating device for water with dregs; take isolated water and input the pond directly connected with granulation box as cooling water circulation use, and also make the actual height of water controlled between liquid level and granulation box in pond be enough to make the cooling water pressure in granulation box more than the lower limit of granulation box normal operation.
As comparatively one of preferred embodiment, described pond needs certain capacity, limit one duty cycle water system cycle-index so that granulation box water temperature is less than 60 DEG C;
And/or, by installing dividing wall type heat exchanger in described pond, to control granulation box water temperature less than 60 DEG C.
Further, this technique specifically includes:
Make high temperature furnace slag from flowing to the cooling water jet nozzle corresponding position with granulation box; and with granulation box injection cooling water-cooled but high temperature furnace slag; form slag-water slurry; with separating device for water with dregs, slag-water slurry is separated into grain slag and water again; thereafter grain slag is transported to stockyard; and isolated water is inputted pond, as cooling water circulation use.
Wherein, the cooling water flow of pond supply granulation box can be adjusted with the quantity of slag or water temperature change.
Further, this technique also includes: after isolated water flows into collecting-tank, then inputs pond with back water pump.
Hereinafter the operation principle of technical solution of the present invention is described in more detail:
1, according to residues processing technique; granulation box hydraulic demand is > 0.2Mpa, and this pressure is to be realized by granulation box height and pond actual control liquid level difference, say, that; by adding elevated basin; utilizing nature pressure reduction, cancelling granulation pump, thus realizing granulation box stable water pressure; do not affect with changes in flow rate; granulation water enters collecting-tank after pulp water separates, back water pump input pond, and granulation water forms circular flow.
2, ensure the reservoir storage that system is enough, control a heat operation granulation water cycle-index, it is prevented that water temperature accumulation rises too much. Granulation water-cooled is but utilize ironmaking production intermittence feature, and when stopping slagging tap, furnace slag granulating system is in no-load run, water temperature drop. Can also install dividing wall type heat exchanger makes recirculated water be cooled down.
Compared with prior art, the present invention at least has the advantage that
(1) utilize water-head, make granulation box operating pressure controlled, do not affect with changes in flow rate, reduce grain slag fine grained, improve the effect of separating device for water with dregs, reduce system wear;
(2) eliminate granulation feed pump, reduce power consumption, simplify technique;
(2) eliminate forced draft cooling, reduce power consumption;
(3) the highest water temperature of system is less than 70 DEG C, and discharge of steam is controlled, and is conducive to environmental protection;
(4) recirculated cooling water in pond has the function of accident water concurrently, it is possible to cancellation accident water tank.
(5) heat energy that heat exchanger obtains can be comprehensively utilized.
Accompanying drawing explanation
Fig. 1 is that the one in a preferred embodiment of the present invention is without granulation pump-type high temperature furnace slag water quenching technology flow chart.
Detailed description of the invention
Below in conjunction with accompanying drawing and a preferred embodiment, technical scheme is further described.
One involved in a preferred embodiment of the present invention includes the assemblies such as granulation box, shot tank, separating device for water with dregs, back water pump (being also referred to as " granulation back water pump "), collecting-tank without granulation pump-type high temperature furnace slag water quenching system.
Consulting shown in Fig. 1, a kind of blast furnace residues processing technique that thereby system carries out includes following flow process:
High temperature furnace slag (being also referred to as " red the slag ") gravity flow that blast furnace produces drops to sluice, the granulation box injection cooling water rapid cooling water being installed in sluice end is quenched, red slag is granulated, form slag-water slurry and pour shot tank, collection conduit then through shot tank bottom enters separating device for water with dregs (such as, dewatering drum), slag-water slurry is fitted with the dewatering drum of sieve plate and rotates and upgrades filtration, when dewatering drum forwards high point to, grain slag falls into and is transported to grain slag stockyard (i.e. slag tip) on the belt conveyer in dewatering drum, then transported by automobile or train, the water that dewatering drum filters then is collected in collecting-tank (being also referred to as " hot water storgae "), water in hot water storgae is pumped into pond by being granulated back water pump (being called for short " back water pump "), water level in water pool needs to reach a certain height, rely on the drop of water level in water pool and granulation box, the red pulp water flowing into sluice is quenched by granulation box injection cooling water, and cooling water forms circular flow.
Wherein, pond needs to reach certain capacity, and once circulation just can meet a heat operation substantially, after tap cinder terminates, and slag disposal system no-load run, water temperature is lowered by granulation water cycle process. Recirculated water is made to be cooled down it is of course also possible to install dividing wall type heat exchanger.
It is to be noted; above-described embodiment is only for illustrating technology design and the feature of the present invention; its object is to allow person skilled in the art will appreciate that present disclosure and to implement according to this; can not limit the scope of the invention with this; all equivalences made according to spirit of the invention change or amendment, all should be encompassed within protection scope of the present invention.
Claims (7)
1. a nothing granulation pump-type high temperature furnace slag water quenching technology, it is characterized in that, including: after the slag-water slurry formed by high temperature furnace slag shrend is separated with separating device for water with dregs, take isolated water and input the pond directly connected with granulation box as cooling water circulation use, and also make the actual height of water controlled between liquid level and granulation box in pond be enough to make the cooling water pressure in granulation box more than the lower limit of granulation box normal operation;
Described pond needs certain capacity, limit one duty cycle water system cycle-index so that granulation box water temperature is less than 60 DEG C;
And/or, dividing wall type heat exchanger is installed in described pond, to control the water temperature cooling down water less than 60 DEG C.
2. according to claim 1 without granulation pump-type high temperature furnace slag water quenching technology, it is characterised in that this technique specifically includes:
Make high temperature furnace slag from flowing to the cooling water jet nozzle corresponding position with granulation box, and with granulation box injection cooling water-cooled but high temperature furnace slag, form slag-water slurry, with separating device for water with dregs, slag-water slurry is separated into grain slag and water again, thereafter grain slag is transported to stockyard, and isolated water is inputted pond, as cooling water circulation use;
Wherein, the cooling water flow of pond supply granulation box it is change with the quantity of slag or water temperature and adjust.
3. according to claim 2 without granulation pump-type high temperature furnace slag water quenching technology, it is characterised in that this technique also includes: after being cooled down in isolated water input set pond, then inputs pond with back water pump.
4. without a granulation pump-type high temperature furnace slag water quenching system, including:
Granulation box, in order to spray cooling water-cooled but high temperature furnace slag thus forming slag-water slurry,
Separating device for water with dregs, in order to slag-water slurry to be separated into grain slag and water,
It is characterized in that, it also includes:
Pond, in order to collect by water isolated in slag-water slurry, described pond needs certain capacity, limits water system cycle-index, so that granulation box water temperature is less than 60 DEG C, is provided with dividing wall type heat exchanger in described pond;
Wherein, described pond is directly connected with granulation box by pipeline valve group, and, the actual height of water controlled between liquid level and granulation box in described pond is enough to make the cooling water pressure in granulation box more than the lower limit of granulation box normal operation.
5. according to claim 4 without granulation pump-type high temperature furnace slag water quenching system, it is characterised in that it also includes the shot tank collecting slag-water slurry, and described shot tank connects with separating device for water with dregs.
6. according to claim 4 without granulation pump-type high temperature furnace slag water quenching system, it is characterised in that described separating device for water with dregs is placed in above collecting-tank, and water is inputted pond through back water pump by described collecting-tank.
7. the nothing granulation pump-type high temperature furnace slag water quenching system according to any one of claim 4-6, it is characterised in that described separating device for water with dregs includes dewatering drum.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310528940.3A CN103525958B (en) | 2013-10-30 | 2013-10-30 | A kind of without granulation pump-type high temperature furnace slag water quenching technology and system |
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| CN201310528940.3A CN103525958B (en) | 2013-10-30 | 2013-10-30 | A kind of without granulation pump-type high temperature furnace slag water quenching technology and system |
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| CN103525958A CN103525958A (en) | 2014-01-22 |
| CN103525958B true CN103525958B (en) | 2016-06-15 |
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| CN105671307A (en) * | 2016-04-20 | 2016-06-15 | 阳谷祥光铜业有限公司 | Metal matte granulating system and operation method thereof |
| CN115925284B (en) * | 2022-12-20 | 2024-07-05 | 攀钢集团攀枝花钢铁研究院有限公司 | System and method for high-temperature water quenching of waste molten salt |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2846423Y (en) * | 2005-08-12 | 2006-12-13 | 中冶南方工程技术有限公司 | Environment protection type slag treating device by filtering method |
| CN1986836A (en) * | 2006-12-28 | 2007-06-27 | 中冶南方工程技术有限公司 | Environment friendly blast furnace slag treating process and system |
| CN102230037A (en) * | 2011-06-13 | 2011-11-02 | 武汉钢铁(集团)公司 | Method for controlling sand content of water body of blast furnace INBA circulating system and flow-limiting device thereof |
| CN203530347U (en) * | 2013-10-30 | 2014-04-09 | 江苏沙钢集团有限公司 | Granulation-pump-free high temperature slag water quenching system |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2846423Y (en) * | 2005-08-12 | 2006-12-13 | 中冶南方工程技术有限公司 | Environment protection type slag treating device by filtering method |
| CN1986836A (en) * | 2006-12-28 | 2007-06-27 | 中冶南方工程技术有限公司 | Environment friendly blast furnace slag treating process and system |
| CN102230037A (en) * | 2011-06-13 | 2011-11-02 | 武汉钢铁(集团)公司 | Method for controlling sand content of water body of blast furnace INBA circulating system and flow-limiting device thereof |
| CN203530347U (en) * | 2013-10-30 | 2014-04-09 | 江苏沙钢集团有限公司 | Granulation-pump-free high temperature slag water quenching system |
Non-Patent Citations (1)
| Title |
|---|
| 马钢2500m3高炉水渣处理技术研究及应用;周昌银等;《钢铁研究》;20050430(第2期);第2节、4.1节、4.2.4节、图2 * |
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