CN114262081A - Steelmaking cooling water dross removal mechanism - Google Patents
Steelmaking cooling water dross removal mechanism Download PDFInfo
- Publication number
- CN114262081A CN114262081A CN202210049129.6A CN202210049129A CN114262081A CN 114262081 A CN114262081 A CN 114262081A CN 202210049129 A CN202210049129 A CN 202210049129A CN 114262081 A CN114262081 A CN 114262081A
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- Prior art keywords
- deslagging
- cooling water
- steelmaking
- device body
- conveying belt
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- 239000000498 cooling water Substances 0.000 title claims abstract description 65
- 238000009628 steelmaking Methods 0.000 title claims abstract description 25
- 230000007246 mechanism Effects 0.000 title description 10
- 239000002893 slag Substances 0.000 claims abstract description 57
- 238000000746 purification Methods 0.000 claims abstract description 19
- 238000003860 storage Methods 0.000 claims abstract description 16
- 230000007423 decrease Effects 0.000 claims abstract description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 16
- 239000002245 particle Substances 0.000 claims description 14
- 239000007787 solid Substances 0.000 claims description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 11
- 239000000919 ceramic Substances 0.000 claims description 10
- 239000012528 membrane Substances 0.000 claims description 10
- 239000002826 coolant Substances 0.000 claims 4
- 230000037431 insertion Effects 0.000 claims 1
- 238000003780 insertion Methods 0.000 claims 1
- 238000007789 sealing Methods 0.000 claims 1
- 230000007613 environmental effect Effects 0.000 abstract description 2
- 239000002351 wastewater Substances 0.000 description 26
- 229910000831 Steel Inorganic materials 0.000 description 11
- 239000010959 steel Substances 0.000 description 11
- 238000005096 rolling process Methods 0.000 description 8
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 7
- 238000001914 filtration Methods 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 4
- 229910052799 carbon Inorganic materials 0.000 description 4
- 238000005097 cold rolling Methods 0.000 description 4
- 238000005098 hot rolling Methods 0.000 description 4
- 239000003921 oil Substances 0.000 description 4
- 238000001816 cooling Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 239000000839 emulsion Substances 0.000 description 2
- 238000004134 energy conservation Methods 0.000 description 2
- 239000003344 environmental pollutant Substances 0.000 description 2
- 238000011010 flushing procedure Methods 0.000 description 2
- 239000004519 grease Substances 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 231100000719 pollutant Toxicity 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 208000005156 Dehydration Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000001112 coagulating effect Effects 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- NDLPOXTZKUMGOV-UHFFFAOYSA-N oxo(oxoferriooxy)iron hydrate Chemical compound O.O=[Fe]O[Fe]=O NDLPOXTZKUMGOV-UHFFFAOYSA-N 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 239000003403 water pollutant Substances 0.000 description 1
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- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The invention discloses a deslagging device for steelmaking cooling water, which comprises a deslagging device body, a deslagging unit and a deep purification unit; the top of the deslagging device body is provided with a cooling water inlet, the side wall of the bottom of the deslagging device body is provided with a cooling water outlet, and the cooling water outlet is provided with a deep purification unit; a plurality of groups of deslagging units are arranged in the deslagging device body, and the deslagging units are arranged layer by layer from top to bottom and are mutually parallel; the deslagging unit comprises a conveying belt with a filter screen and a conveying belt driving device; the conveying belt is obliquely arranged, and a slag storage groove is arranged at the top of the high side of the conveying belt; the aperture of the filter screen in each layer of slag removing unit decreases progressively from top to bottom. This device can carry out effectual slagging-off to the characteristic of steelmaking cooling water for the better satisfied emission requirement of steelmaking cooling water after handling, when realizing the environmental protection, can also improve the utilization ratio, realize the energy and recycle.
Description
Technical Field
The invention relates to the technical field of steelmaking cooling water treatment, in particular to a steelmaking cooling water deslagging device.
Background
In the steel-making production process, a large amount of waste water is generated, and the waste water mainly contains iron scales generated on the surfaces of a roller table of a spray cooling rolling mill and rolled steel, oily substances on mechanical equipment, solid impurities and other wastes, sludge and the like. If the waste water is directly discharged, the environment is polluted, and water resources are seriously wasted, so that each steel rolling mill takes certain measures to recycle water according to the condition of the steel rolling mill. Meanwhile, researchers are researching various new water treatment methods to improve the quality of treated water, reduce the treatment cost and open up new ideas for energy conservation and consumption reduction of steel rolling production. The steel rolling wastewater can be divided into hot rolling wastewater and cold rolling wastewater, main pollutants are a large amount of iron oxide scales and lubricating oils with different particle sizes, the treatment of oily wastewater in the hot rolling wastewater and the recovery technology of waste oil are representative in the steel rolling wastewater, and in addition, the concentration, dehydration treatment and the like of fine-particle oily iron oxide scales are also main treatment contents. The water temperature is 30-40 ℃, and about 30-40m3 of waste water is discharged when each 1 ton of steel plate is rolled. The waste water contains about 5000mg/L of iron scale, 100-1250mg/L of suspended matter, 800-1500mg/L of residue and 50-500mg/L of oil. After suspended substances and oil pollution are removed from the wastewater through coagulating sedimentation, the wastewater is cooled and reused for production. The cold rolling waste water has various types, and the contained pollutants are relatively complicated and have large differences. The cold rolling emulsion has high grease concentration and emulsion concentration, generally contains a surfactant, and is wastewater with high treatment difficulty in an oily wastewater system.
The steel mill wastewater is characterized in that 1. the ironmaking wastewater is derived from blast furnace gas washing water and slag flushing wastewater and is characterized in that: the temperature of the wastewater is high, and the concentration of suspended matters is high and can reach 1000-3000 mg/L. 2. The steelmaking wastewater is derived from indirect cooling water of equipment, direct cooling wastewater of the equipment and products, dedusting wastewater and slag flushing wastewater, and is characterized in that: direct cooling of equipment and products. Contains a large amount of ferric oxide and a small amount of lubricating grease, and can be recycled after treatment. 3. The steel rolling wastewater is from the processes of hot rolling and cold rolling products, needs a large amount of direct cooling water to wash steel and equipment, and is characterized in that: the hot rolling wastewater contains a large amount of iron oxide and oil, and has high water temperature and large water amount.
With the increasing national requirements on energy conservation and emission reduction, the emission standard of water pollutants in the steel industry is established, and higher and stricter requirements on the sewage emission generated in the steel making process are provided.
Disclosure of Invention
In order to solve exist not enough among the prior art, this application has proposed a steelmaking cooling water dross removal mechanism, to the characteristic of steelmaking cooling water, can carry out effectual slagging-off processing for the better satisfied emission requirement of steelmaking cooling water after the processing, when realizing the environmental protection, can also improve utilization rate, realize the energy and recycle.
The technical scheme adopted by the invention is as follows:
a deslagging device for cooling water in steelmaking comprises a deslagging device body, a deslagging unit and a deep purification unit;
the top of the deslagging device body is provided with a cooling water inlet, the side wall of the bottom of the deslagging device body is provided with a cooling water outlet, and the cooling water outlet is provided with a deep purification unit;
a plurality of groups of deslagging units are arranged in the deslagging device body, and the deslagging units are arranged layer by layer from top to bottom and are mutually parallel; the deslagging unit comprises a conveying belt with a filter screen and a conveying belt driving device; the conveying belt is obliquely arranged, and a slag storage groove is arranged at the top of the high side of the conveying belt; the aperture of the filter screen in each layer of slag removing unit decreases progressively from top to bottom.
Further, the cooling water inlet is disposed toward a low side of the conveyor belt.
Further, a baffle is provided at the cooling water inlet near the high side of the conveyor belt.
Further, the transmission band is driven by a driving unit, and the driving unit is driven by a motor arranged outside the slag removing device body. The conveying belt adopts a chain type conveying belt; and a filter screen is arranged on the chain.
Furthermore, a plurality of shifting pieces are arranged on the transmission belt, and adjacent shifting pieces are distributed at equal intervals.
Further, a plurality of spiral stirrers are arranged at the bottom of the slag storage tank, a slag removal outlet is arranged on the slag removal device body, and solid slag particles in the slag storage tank are discharged out of the slag removal device body through the spiral stirrers.
Further, set up ceramic membrane, activated carbon layer in the deep purification unit in proper order, set up ceramic membrane, activated carbon layer into the inserted sheet formula, compress tightly ceramic membrane, activated carbon layer in dross removal mechanism body cooling water outlet department through sealed lid, carry out deep purification to the cooling water after filtering.
Further, a stirrer is arranged at the bottom of the deslagging device body.
The invention has the beneficial effects that:
according to the slag removing device designed by the application, the plurality of groups of slag removing units are arranged in the slag removing device body, and the aperture of the filter screen in each layer of slag removing unit decreases progressively from top to bottom; therefore, the solid slag particles in the cooling water can be separated layer by layer.
The cooling water after filtration can carry out deep purification to the cooling water after filtration under the effect on ceramic membrane, active carbon layer through the deep purification unit, can guarantee that this device handles the back cooling water and can accord with the emission requirement.
Drawings
FIG. 1 is a sectional view of a slag removing device for cooling water in steelmaking according to the present invention;
in the figure, 1, a deslagging device body, 2, a cooling water inlet pipe, 3, a baffle, 4, a first deslagging unit, 4-1, a first driving unit, 4-2, a first shifting sheet, 4-3, a first transmission belt, 4-4, a first slag storage tank, 5, a second deslagging unit, 5-1, a second driving unit, 5-2, a second shifting sheet, 5-3, a second transmission belt, 5-4, a second slag storage tank, 6, a stirrer, 7, a deep purification unit, 8 and a cooling water outlet pipe.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
To the not enough among the prior art, this application has designed like the cooling water dross removal mechanism shown in figure 1 in order to realize effectively slagging-off the cooling water that produces among the steelmaking process, and in order to realize an integration dross removal mechanism. The device mainly comprises a deslagging device body 1, a first deslagging unit 4, a second deslagging unit 5 and a deep purification unit 7.
The inside cavity structure that is of dross removal mechanism body 1, the top of dross removal mechanism body 1 is equipped with the cooling water entry, and the cooling water entry passes through cooling water inlet pipe 2 and connects steelmaking cooling water collection unit, and the cooling water input dross removal mechanism body 1 inside will treat the slagging-off by cooling water inlet pipe 2. A first deslagging unit 4 and a second deslagging unit 5 are sequentially arranged inside the deslagging device body 1 from top to bottom; the cooling water outlet at the bottom of the deslagging device body 1 is provided with a deep purification unit 7, and the deep purification unit 7 is connected with a cooling water outlet pipe 8 to discharge purified cooling water.
The first deslagging unit 4 comprises a first driving unit 4-1, a first shifting piece 4-2, a first conveying belt 4-3 and a first slag storage tank 4-4. The first conveyor belt 4-3 is obliquely arranged inside the deslagging device body 1, and a cooling water inlet at the top of the deslagging device body 1 is arranged towards the low side of the first conveyor belt 4-3; in order to control the cooling water injected from the cooling water inlet not to impact the high side of the first conveyor belt 4-3, a baffle plate 3 is arranged at the cooling water inlet close to the high side of the first conveyor belt 4-3; thereby ensuring that the cooling water injected from the cooling water inlet falls within the range of the low side portion of the first transfer belt 4-3. The first conveyor belt 4-3 is driven by a first drive unit 4-1, and the first drive unit 4-1 is driven by a motor arranged outside the slag removing device body 1. The first conveying belt 4-3 in the application adopts a chain type conveying belt because the cooling water can cause the conveying belt to skid; a filter screen is arranged on the chain; the aperture of the filter screen is selected according to the size of solid slag particles in the cooling water. And part of solid slag particles in the cooling water cannot pass through the filter screen due to overlarge volume, and are screened and separated for the first time. The first slag storage groove 4-4 is arranged below the high side of the first conveying belt 4-3 and is fixedly connected with the slag removing device body 1, and filtered solid slag particles are conveyed to a high position by the first conveying belt 4-3 and then fall into the first slag storage groove 4-4.
The second deslagging unit 5 comprises a second driving unit 5-1, a second shifting sheet 5-2, a second conveying belt 5-3 and a second slag storage tank 5-4. The second deslagging unit 5 is arranged below the first deslagging unit 4, the structure is similar to that of the first deslagging unit 4, but the aperture of a filter screen on the second deslagging unit 5 is smaller than that of a filter screen on the first deslagging unit 4; therefore, the solid slag particles which pass through the first slag removing unit 4 and are not successfully separated are sieved again, and then are conveyed to the top of the second conveying belt 5-3 and fall into the second slag storage tank 5-4; thereby realizing secondary filtration.
In this application, not confine two-layer slagging-off unit to, can set up the multilayer according to actual need, progressively decrease according to the successive layer of filter screen aperture, realize successive layer and remove the gred to the cooling water.
In addition, in the present application, in order to prevent the solid slag particles from moving relative to the conveyor belt during the transportation of the conveyor belt, the solid slag particles roll downward during the transportation of the conveyor belt, so that the present application arranges the shifting plates on the conveyor belt at a certain distance, such as the first shifting plate 4-2 on the first conveyor belt 4-3 and the second shifting plate 5-2 on the second conveyor belt 5-3. The arc-shaped shifting piece can prevent solid slag particles from rolling downwards in the upward movement process of the conveying belt, and the slag removing effect of each layer of slag removing units is ensured.
More preferably, a plurality of spiral stirrers can be arranged at the bottom of the slag storage tank, a slag removal outlet is arranged on the slag removal device body 1, and solid slag particles in the slag storage tank are discharged out of the slag removal device body 1 through the spiral stirrers.
Preferably, because solid slag particles with a certain size cannot be filtered out by the slag removal unit, the bottom of the slag removal device body 1 is provided with the deep purification unit 7; set gradually ceramic membrane, active carbon layer in this deep purification unit 7, can set up ceramic membrane, active carbon layer into the inserted sheet formula, compress tightly ceramic membrane, active carbon layer in the 1 cooling water exit of dross removal mechanism body through sealed lid, carry out deep purification to the cooling water after filtering.
Preferably, in order to prevent part of solid slag particles in the cooling water filtered by the slag removing unit from depositing at the bottom of the slag removing device body 1, a stirrer 6 is arranged at the bottom of the slag removing device body 1.
The above embodiments are only used for illustrating the design idea and features of the present invention, and the purpose of the present invention is to enable those skilled in the art to understand the content of the present invention and implement the present invention accordingly, and the protection scope of the present invention is not limited to the above embodiments. Therefore, all equivalent changes and modifications made in accordance with the principles and concepts disclosed herein are intended to be included within the scope of the present invention.
Claims (8)
1. The deslagging device for the steelmaking cooling water is characterized by comprising a deslagging device body (1), a deslagging unit and a deep purification unit (7);
the top of the deslagging device body (1) is provided with a cooling water inlet, the side wall of the bottom of the deslagging device body (1) is provided with a cooling water outlet, and the cooling water outlet is provided with a deep purification unit (7);
a plurality of groups of deslagging units are arranged in the deslagging device body (1), and the deslagging units are arranged layer by layer from top to bottom and are mutually parallel; the deslagging unit comprises a conveying belt with a filter screen and a conveying belt driving device; the conveying belt is obliquely arranged, and a slag storage groove is arranged at the top of the high side of the conveying belt; the aperture of the filter screen in each layer of slag removing unit decreases progressively from top to bottom.
2. The steelmaking coolant slag removal system of claim 1 in which the coolant water inlet is located toward the low side of the conveyor belt.
3. A steelmaking coolant water deslagging apparatus as set forth in claim 2 wherein a baffle is provided adjacent the coolant water inlet on the high side of the conveyor.
4. A deslagging apparatus for cooling water used in steelmaking according to claim 2, characterised in that the conveyor belt is driven by a drive unit driven by an electric motor provided outside the deslagging apparatus body (1). The conveying belt adopts a chain type conveying belt; and a filter screen is arranged on the chain.
5. The deslagging device of steelmaking cooling water as claimed in claim 4 wherein a plurality of paddles are provided on the conveyor belt, adjacent paddles being spaced equidistantly from one another.
6. A deslagging device for cooling water in steelmaking according to any one of claims 1 to 5, wherein a plurality of screw stirrers are provided at the bottom of the slag storage tank, and a deslagging outlet is provided in the deslagging device body (1), and solid slag particles in the slag storage tank are discharged out of the deslagging device body (1) through the screw stirrers.
7. The deslagging device for cooling water in steelmaking as claimed in claim 6, wherein the deep purification unit (7) is internally provided with a ceramic membrane and an activated carbon layer in sequence, the ceramic membrane and the activated carbon layer are arranged in an insertion type, and the ceramic membrane and the activated carbon layer are tightly pressed at the cooling water outlet of the deslagging device body (1) through sealing covers, so as to carry out deep purification on the filtered cooling water.
8. A deslagging apparatus for cooling water used in steelmaking according to claim 6 characterised in that an agitator (6) is provided at the bottom of the deslagging apparatus body 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210049129.6A CN114262081A (en) | 2022-01-17 | 2022-01-17 | Steelmaking cooling water dross removal mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210049129.6A CN114262081A (en) | 2022-01-17 | 2022-01-17 | Steelmaking cooling water dross removal mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114262081A true CN114262081A (en) | 2022-04-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210049129.6A Pending CN114262081A (en) | 2022-01-17 | 2022-01-17 | Steelmaking cooling water dross removal mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114262081A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR200323529Y1 (en) * | 2003-05-15 | 2003-08-21 | 하사곤 | Do dregs separation processing plant |
| CN208553339U (en) * | 2018-05-31 | 2019-03-01 | 上海绿塘净化设备有限公司 | A kind of close sieved filter transmission equipment |
| CN210150836U (en) * | 2019-06-03 | 2020-03-17 | 陕西万宝隆科技实业发展有限公司 | Deslagging device of oil-containing waste water decomposition system |
| CN210595721U (en) * | 2019-09-28 | 2020-05-22 | 云南曲靖钢铁集团凤凰钢铁有限公司 | Sewage treatment system of steel smelting plant |
| CN214654093U (en) * | 2020-12-14 | 2021-11-09 | 江油三丰汽轮机材料有限公司 | Steelmaking cooling water treatment system |
-
2022
- 2022-01-17 CN CN202210049129.6A patent/CN114262081A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR200323529Y1 (en) * | 2003-05-15 | 2003-08-21 | 하사곤 | Do dregs separation processing plant |
| CN208553339U (en) * | 2018-05-31 | 2019-03-01 | 上海绿塘净化设备有限公司 | A kind of close sieved filter transmission equipment |
| CN210150836U (en) * | 2019-06-03 | 2020-03-17 | 陕西万宝隆科技实业发展有限公司 | Deslagging device of oil-containing waste water decomposition system |
| CN210595721U (en) * | 2019-09-28 | 2020-05-22 | 云南曲靖钢铁集团凤凰钢铁有限公司 | Sewage treatment system of steel smelting plant |
| CN214654093U (en) * | 2020-12-14 | 2021-11-09 | 江油三丰汽轮机材料有限公司 | Steelmaking cooling water treatment system |
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Application publication date: 20220401 |