CN112342557A - Pickling system and blockage removing method thereof - Google Patents
Pickling system and blockage removing method thereof Download PDFInfo
- Publication number
- CN112342557A CN112342557A CN202011095465.1A CN202011095465A CN112342557A CN 112342557 A CN112342557 A CN 112342557A CN 202011095465 A CN202011095465 A CN 202011095465A CN 112342557 A CN112342557 A CN 112342557A
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- Prior art keywords
- acid
- switch valve
- communicating pipe
- valve
- acid tank
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- 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
Links
- 238000000034 method Methods 0.000 title claims abstract description 27
- 238000005554 pickling Methods 0.000 title claims abstract description 18
- 239000002253 acid Substances 0.000 claims abstract description 152
- 238000005507 spraying Methods 0.000 claims abstract description 15
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 33
- 238000011010 flushing procedure Methods 0.000 claims description 19
- 239000003795 chemical substances by application Substances 0.000 claims description 18
- 238000004891 communication Methods 0.000 claims description 12
- 238000005406 washing Methods 0.000 claims description 7
- 238000010438 heat treatment Methods 0.000 claims description 6
- 229910052710 silicon Inorganic materials 0.000 description 16
- 239000010703 silicon Substances 0.000 description 16
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 15
- 239000010802 sludge Substances 0.000 description 12
- 238000004140 cleaning Methods 0.000 description 10
- 238000004519 manufacturing process Methods 0.000 description 8
- 239000007921 spray Substances 0.000 description 8
- 239000007788 liquid Substances 0.000 description 5
- 238000005096 rolling process Methods 0.000 description 5
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 4
- 239000003513 alkali Substances 0.000 description 4
- 230000000903 blocking effect Effects 0.000 description 4
- 238000005097 cold rolling Methods 0.000 description 4
- 238000007599 discharging Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 239000000377 silicon dioxide Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 229910052748 manganese Inorganic materials 0.000 description 1
- 239000011572 manganese Substances 0.000 description 1
- 239000000047 product Substances 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
- C23G3/00—Apparatus for cleaning or pickling metallic material
- C23G3/02—Apparatus for cleaning or pickling metallic material for cleaning wires, strips, filaments continuously
- C23G3/023—Apparatus for cleaning or pickling metallic material for cleaning wires, strips, filaments continuously by spraying
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
- C23G3/00—Apparatus for cleaning or pickling metallic material
- C23G3/02—Apparatus for cleaning or pickling metallic material for cleaning wires, strips, filaments continuously
- C23G3/025—Details of the apparatus, e.g. linings or sealing means
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
Abstract
The invention discloses a pickling system and a blockage removing method thereof, wherein the system comprises a first acid tank; a second acid tank; the spraying port comprises an acid inlet and an acid outlet; circulation pipeline, circulation pipeline includes first communicating pipe, second communicating pipe, third communicating pipe and fourth communicating pipe, first sour mouth with third sour mouth passes through first communicating pipe is linked together, second sour mouth with fourth sour mouth passes through second communicating pipe intercommunication, go into sour mouth with first communicating pipe is linked together, go out sour mouth with fourth communicating pipe is linked together, install first ooff valve and second ooff valve on the first communicating pipe, install third ooff valve and fourth ooff valve on the second communicating pipe. The technical problems that equipment is damaged due to blockage of the acid tank and a system cannot work normally in the blockage clearing and maintaining process are solved.
Description
Technical Field
The invention belongs to the technical field of cold rolling and pickling, and particularly relates to a pickling system and a blockage removing method thereof.
Background
The pickling section in the cold rolling and acid rolling unit is a vital component, whether the operation of the pickling section is good or not is related to the smooth operation of acid rolling, the spraying opening and the acid tank are the core of the pickling section, the spraying opening and the acid tank are used for cleaning iron scales on the surface of a hot-rolled coil to facilitate rolling, and whether the pickling effect is good or not affects the quality grade of the whole cold-rolled product. With the rapid increase of the steel of high-silicon high-manganese products, silicon, calcium and other components in the cleaned acid liquor are combined to form silicon mud which is greatly increased and is bonded into blocks in pipelines, spray beams, measuring instruments, graphite heat exchangers and other places, and the acid liquor data measured by the instruments is inaccurate due to the influence of the silicon mud, so that the surface quality of the strip steel is greatly influenced. Along with the increase of the operation time of the unit, the frequency and the times of the silicon sludge causing the blockage of the spray opening and the acid tank due to the silicon sludge are obviously increased, and the frequency and the times of treating the silicon sludge greatly influence the normal production of acid rolling and the whole cold rolling. Therefore, how to realize the online blockage removal maintenance of the acid tank, avoid the equipment damage caused by the blockage of the acid tank, and ensure the normal work of the system in the blockage removal maintenance process becomes a problem to be solved by technical personnel in the field.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides an acid washing system and a blockage removing method thereof, which are used for at least partially solving the technical problems that equipment is damaged due to blockage of an acid tank and the system cannot work normally in the blockage removing and maintaining process.
The invention realizes the purpose through the following technical scheme:
an acid wash system comprising:
a first acid tank;
a second acid tank;
the spraying port comprises an acid inlet and an acid outlet;
circulation pipeline, circulation pipeline includes first communicating pipe, second communicating pipe, third communicating pipe and fourth communicating pipe, first sour jar with the second acid jar passes through respectively first communicating pipe and second communicating pipe intercommunication, go into sour mouthful through third communicating pipe with first communicating pipe is linked together, it passes through to go out sour mouthful fourth communicating pipe with second communicating pipe is linked together, install first ooff valve and second ooff valve on the first communicating pipe, second is installed third ooff valve and fourth ooff valve on communicating pipe.
Further, the communication position between the acid inlet and the first communication pipe is located between the first switch valve and the second switch valve.
Further, the communication position between the acid outlet and the second communication pipe is located between the third switch valve and the fourth switch valve.
Further, the first switch valve, the second switch valve, the third switch valve and the fourth switch valve are all manual valves.
The invention also provides a blockage removing method which is applied to the acid washing system and comprises the following steps:
closing the third switch valve, simultaneously opening the fourth switch valve, closing the first switch valve after the acid liquor in the first acid tank is pumped out, and simultaneously opening the second switch valve;
adding a flushing agent with preset concentration into the first acid tank, simultaneously opening the first switch valve and the third switch valve, heating and keeping the temperature at a preset constant temperature, so that the flushing agent is circularly flushed between the spraying port and the first tank body.
Further, the method also comprises the following steps:
closing the fourth switch valve, simultaneously opening the third switch valve, closing the second switch valve when the acid liquor in the first acid tank is completely pumped, and simultaneously opening the first switch valve;
and adding a flushing agent with preset concentration into the second acid tank, simultaneously opening the second switch valve and the fourth switch valve, heating and keeping the temperature at a preset constant temperature, so that the flushing agent is circularly flushed between the spraying port and the second tank body.
Further, the flushing agent with the preset concentration is a sodium hydroxide solution with the concentration of 3%.
Further, the preset constant temperature is 75 ℃.
The acid cleaning system provided by the invention adopts two groups of acid tanks which are arranged in parallel, when any acid tank is blocked by a pipeline, the acid in the acid tank is poured into the other standby acid tank, and the other acid tank is communicated with the spray opening by the opening and closing adjustment of the switch valve, so that the other standby acid tank is used for replacing the blocked acid tank to realize normal acid cleaning operation; and when the pipeline is blocked by the acid tank silicon sludge, the flushing agent is added into the acid tank and circulated at a certain temperature to clean the attached silicon sludge so as to realize blockage removal. Therefore, in the production process, due to the fact that the two groups of acid tanks are arranged, any acid tank which is blocked can be abandoned at any time, production is achieved by the aid of the standby acid tanks, influence caused by parking and speed reduction is reduced, and damage to other equipment caused by blocking is avoided. Thereby the technical problems that the equipment is damaged due to the blockage of the acid tank and the system can not work normally in the blockage clearing and maintaining process are solved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic structural diagram of an embodiment of the pickling system of the present invention.
Description of reference numerals:
1-a first acid tank 2-a second acid tank 3-a spray port 4-a first communicating pipe 5-a second communicating pipe
6-third communicating pipe 7-fourth communicating pipe 8-first switch valve 9-second switch valve
10-third on-off valve 11-fourth on-off valve
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, fig. 1 is a schematic structural diagram of an embodiment of an acid cleaning system according to the present invention.
In a specific embodiment, the pickling system provided by the invention is used in a pickling section of a cold-rolling acid rolling mill, and when the pickling system is blocked, the pickling section cannot guarantee that the pickling task is effectively completed within a specified time, so that the whole mill is forced to reduce the speed and even stop producing. The acid washing system provided by the invention aims to give up blocking of the acid tank at any time, realize production by using the standby acid tank and reduce the influence caused by stopping and reducing speed.
As shown in fig. 1, the acid washing system comprises a first acid tank 1, a second acid tank 2, a spray port 3 and a circulation pipeline, wherein the spray port 3 comprises an acid inlet and an acid outlet; circulation pipeline includes first communicating pipe 4, second communicating pipe 5, third communicating pipe 6 and fourth communicating pipe 7, and first sour jar 1 and second sour jar 2 pass through first communicating pipe 4 is linked together to first sour jar 1, second sour jar 2 communicate through second communicating pipe 5, go into sour mouthful through third communicating pipe 6 with first communicating pipe 4 is linked together, it passes through to go out sour mouthful fourth communicating pipe 7 with second communicating pipe 5 is linked together, install first ooff valve 8 and second ooff valve 9 on the first communicating pipe 4, install third ooff valve 10 and fourth ooff valve 11 on the second communicating pipe 5. The first, second, third, and fourth switching valves 8, 9, 10, and 11 may all be manual valves.
In order to avoid the phenomenon of tube staggering of solution when the pipeline is cut off, the communication position between the acid inlet and the first communication pipe 4 is located between the first switch valve 8 and the second switch valve 9, and the communication position between the acid outlet and the second communication pipe 5 is located between the third switch valve 10 and the fourth switch valve 11. Thus, when the first acid tank 1 is blocked, the third switch valve 10 is closed, the fourth switch valve 11 is opened at the same time, when the acid liquor in the first acid tank 1 is basically pumped out, the first switch valve 8 is closed, the second switch valve 9 is opened at the same time, and the residual acid liquor is drained from the lower liquor drainage port. Then, 3% of sodium hydroxide is added into the first acid tank 1, the first switch valve 8 and the second switch valve 9 are opened simultaneously, alkali liquor is circulated between the spraying port 3 and the first acid tank 1 at 75 ℃, attached silica is cleaned, and finally the sodium hydroxide solution which is fully circulated is discharged from a liquid discharge port at the lower part of the first acid tank 1, so that the acid tank is switched and the blocked part is washed. When the second acid tank 2 is blocked, the fourth switch valve 11 is closed, the third switch valve 10 is opened at the same time, when the acid liquor in the second acid tank 2 is basically pumped out, the second switch valve 9 is closed, the first switch valve 8 is opened at the same time, and the residual acid liquor is drained from the lower liquid outlet; adding 3% of sodium hydroxide into the second acid tank 2, simultaneously opening the second switch valve 9 and the fourth switch valve 11, circulating alkali liquor between the spraying opening 3 and the second acid tank 2 at 75 ℃, and cleaning attached silicon sludge; and finally, discharging the circulating sufficient sodium hydroxide solution from a liquid outlet at the lower part of the second acid tank 2 so as to realize the switching of the acid tanks and the flushing of the blocked part.
In the above specific embodiment, the acid washing system provided by the present invention employs two sets of acid tanks arranged in parallel, when any one of the acid tanks is blocked by a pipeline, the acid in the acid tank is poured into the other standby acid tank, and the other acid tank is communicated with the spray opening 3 by opening and closing adjustment of the switch valve, so that the other standby acid tank is used to replace the blocked acid tank to realize normal acid washing operation; and when the pipeline is blocked by the acid tank silicon sludge, the flushing agent is added into the acid tank and circulated at a certain temperature to clean the attached silicon sludge so as to realize blockage removal. Therefore, in the production process, due to the fact that the two groups of acid tanks are arranged, any acid tank which is blocked can be abandoned at any time, production is achieved by the aid of the standby acid tanks, influence caused by parking and speed reduction is reduced, and damage to other equipment caused by blocking is avoided. Thereby the technical problems that the equipment is damaged due to the blockage of the acid tank and the system can not work normally in the blockage clearing and maintaining process are solved.
In addition to the above acid cleaning system, the present invention also provides a blockage removal method applied to the acid cleaning system, which in one embodiment comprises the following steps when the first acid tank 1 is blocked:
closing the third switch valve 10, simultaneously opening the fourth switch valve 11, after the acid liquor in the first acid tank 1 is pumped out, closing the first switch valve 8, and simultaneously opening the second switch valve 9;
adding a flushing agent with a preset concentration into the first acid tank 1, simultaneously opening the first switch valve 8 and the third switch valve 10, heating and keeping the temperature at a preset constant temperature, so that the flushing agent is circularly flushed between the spraying port 3 and the first tank body.
Further, when the second acid tank 2 is clogged, the method further includes the steps of:
closing the fourth switch valve 11, simultaneously opening the third switch valve 10, and closing the second switch valve 9 and simultaneously opening the first switch valve 8 when the acid liquor in the first acid tank 1 is completely pumped;
and adding a flushing agent with preset concentration into the second acid tank 2, simultaneously opening the second switch valve 9 and the fourth switch valve 11, heating and keeping the temperature at a preset constant temperature, so that the flushing agent is circularly flushed between the spraying port 3 and the second tank body.
Specifically, the flushing agent with the preset concentration is a sodium hydroxide solution with the concentration of 3%, and the preset constant temperature is 75 ℃.
In the practical use process, the acid tank blockage removing method provided by the invention comprises a treatment method when the first acid tank 1 is blocked by silicon mud and a treatment method after the second acid tank 2 is blocked.
Specifically, when the acid blockage situation of the first acid tank 1 system pipeline occurs, the method comprises the following steps:
1. closing the third switch valve 10, simultaneously opening the fourth switch valve 11, closing the first switch valve 8 when the acid liquor in the first acid tank 1 is basically pumped out, simultaneously opening the second switch valve 9, and completely discharging the residual acid liquor from a lower liquor outlet;
2. adding 3% sodium hydroxide into the first acid tank 1, simultaneously opening the first switch valve 8 and the third switch valve 10, circulating the alkali liquor between the spraying port 3 and the first acid tank 1 at 75 ℃, and cleaning the attached silica sludge;
3. the circulating sodium hydroxide solution was discharged from the lower liquid outlet of the first acid tank 1.
When the acid blockage situation of the pipeline of the first acid tank 1 occurs, the method comprises the following steps:
1. closing the fourth switch valve 11, simultaneously opening the third switch valve 10, closing the second switch valve 9 when the acid liquor in the first acid tank 1 is basically pumped out, simultaneously opening the first switch valve 8, and completely discharging the residual acid liquor from a lower liquor outlet;
2. adding 3% of sodium hydroxide into the second acid tank 2, simultaneously opening the second switch valve 9 and the fourth switch valve 11, circulating alkali liquor between the spraying opening 3 and the second acid tank 2 at 75 ℃, and cleaning attached silicon sludge;
3. the sodium hydroxide solution circulated sufficiently was discharged from the lower liquid outlet of the second acid tank 2.
In the above specific embodiment, the blockage clearing method provided by the invention adopts two groups of acid tanks arranged in parallel, when any one acid tank is blocked by a pipeline, acid in the acid tank is poured into the other standby acid tank, and the other acid tank is communicated with the spray opening 3 through the opening and closing adjustment of the switch valve, so that the other standby acid tank is used for replacing the blocked acid tank to realize normal acid cleaning operation; and when the pipeline is blocked by the acid tank silicon sludge, the flushing agent is added into the acid tank and circulated at a certain temperature to clean the attached silicon sludge so as to realize blockage removal. Therefore, in the production process, due to the fact that the two groups of acid tanks are arranged, any acid tank which is blocked can be abandoned at any time, production is achieved by the aid of the standby acid tanks, influence caused by parking and speed reduction is reduced, and damage to other equipment caused by blocking is avoided. Thereby the technical problems that the equipment is damaged due to the blockage of the acid tank and the system can not work normally in the blockage clearing and maintaining process are solved.
The above-mentioned embodiments are only for convenience of description of the invention, and are not intended to limit the invention in any way, and those skilled in the art will recognize that the invention can be practiced without departing from the spirit and scope of the invention.
Claims (8)
1. An acid wash system, comprising:
a first acid tank (1);
a second acid tank (2);
the spraying port (3) comprises an acid inlet and an acid outlet;
circulation pipeline, circulation pipeline includes first communicating pipe (4), second communicating pipe (5), third communicating pipe (6) and fourth communicating pipe (7), first sour jar (1) with second sour jar (2) pass through respectively first communicating pipe (4) and second communicating pipe (5) intercommunication, go into sour mouthful through third communicating pipe (6) with first communicating pipe (4) are linked together, go out sour mouthful to pass through fourth communicating pipe (7) with second communicating pipe (5) are linked together, install first ooff valve (8) and second ooff valve (9) on first communicating pipe (4), install third ooff valve (10) and fourth ooff valve (11) on second communicating pipe (5).
2. The pickling system according to claim 1, wherein a communication position between the acid inlet and the first communication pipe (4) is between the first on-off valve (8) and the second on-off valve (9).
3. The pickling system according to claim 2, wherein a communication position between the acid outlet and the second communication pipe (5) is between the third on-off valve (10) and the fourth on-off valve (11).
4. The pickling system according to claim 3, wherein the first switch valve (8), the second switch valve (9), the third switch valve (10), and the fourth switch valve (11) are all manual valves.
5. A blockage removal method applied to the acid washing system according to any one of claims 1 to 4, wherein the method comprises the following steps:
closing the third switch valve, simultaneously opening the fourth switch valve, closing the first switch valve after the acid liquor in the first acid tank (1) is pumped out, and simultaneously opening the second switch valve;
adding a flushing agent with preset concentration into the first acid tank (1), simultaneously opening the first switch valve and the third switch valve, heating and keeping the temperature at a preset constant temperature, so that the flushing agent is circularly flushed between the spraying port (3) and the first tank body.
6. The method of clearing blockage according to claim 5, further comprising the steps of:
closing the fourth switch valve, simultaneously opening the third switch valve, closing the second switch valve when the acid liquor in the first acid tank (1) is completely pumped, and simultaneously opening the first switch valve;
and adding a flushing agent with preset concentration into the second acid tank (2), simultaneously opening the second switch valve and the fourth switch valve, heating and keeping the temperature at a preset constant temperature, so that the flushing agent is circularly flushed between the spraying port (3) and the second tank body.
7. The method for clearing blockage according to claim 6, wherein the flushing agent with the preset concentration is sodium hydroxide solution with the concentration of 3%.
8. A method of clearing plugs according to claim 6 wherein the preset constant temperature is 75 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011095465.1A CN112342557A (en) | 2020-10-14 | 2020-10-14 | Pickling system and blockage removing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011095465.1A CN112342557A (en) | 2020-10-14 | 2020-10-14 | Pickling system and blockage removing method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112342557A true CN112342557A (en) | 2021-02-09 |
Family
ID=74360770
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011095465.1A Pending CN112342557A (en) | 2020-10-14 | 2020-10-14 | Pickling system and blockage removing method thereof |
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| Country | Link |
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| CN (1) | CN112342557A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040069323A1 (en) * | 2002-10-15 | 2004-04-15 | Steve Komarek | System and method for cleaning occluded water pipes in structures |
| CN101096766A (en) * | 2006-06-30 | 2008-01-02 | 宝山钢铁股份有限公司 | Silicon steel sulfuric acid refining system cleaning process |
| CN201158712Y (en) * | 2008-02-20 | 2008-12-03 | 宝山钢铁股份有限公司 | Silicon steel pickling device with pre-heating rinsing part |
| CN101555602A (en) * | 2009-01-13 | 2009-10-14 | 江苏晨力实业有限公司 | Wire acid cleaning process operation line |
| DE102017123152A1 (en) * | 2017-10-05 | 2019-04-11 | Sms Group Gmbh | Pickling plant with circulation device |
-
2020
- 2020-10-14 CN CN202011095465.1A patent/CN112342557A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040069323A1 (en) * | 2002-10-15 | 2004-04-15 | Steve Komarek | System and method for cleaning occluded water pipes in structures |
| CN101096766A (en) * | 2006-06-30 | 2008-01-02 | 宝山钢铁股份有限公司 | Silicon steel sulfuric acid refining system cleaning process |
| CN201158712Y (en) * | 2008-02-20 | 2008-12-03 | 宝山钢铁股份有限公司 | Silicon steel pickling device with pre-heating rinsing part |
| CN101555602A (en) * | 2009-01-13 | 2009-10-14 | 江苏晨力实业有限公司 | Wire acid cleaning process operation line |
| DE102017123152A1 (en) * | 2017-10-05 | 2019-04-11 | Sms Group Gmbh | Pickling plant with circulation device |
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Application publication date: 20210209 |