JPS6368695A - Method for removing impurities from rolling fluid - Google Patents
Method for removing impurities from rolling fluidInfo
- Publication number
- JPS6368695A JPS6368695A JP21203386A JP21203386A JPS6368695A JP S6368695 A JPS6368695 A JP S6368695A JP 21203386 A JP21203386 A JP 21203386A JP 21203386 A JP21203386 A JP 21203386A JP S6368695 A JPS6368695 A JP S6368695A
- Authority
- JP
- Japan
- Prior art keywords
- rolling
- impurities
- fluid
- tank
- rolling fluid
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000005096 rolling process Methods 0.000 title claims abstract description 39
- 239000012530 fluid Substances 0.000 title claims abstract description 35
- 239000012535 impurity Substances 0.000 title claims abstract description 26
- 238000000034 method Methods 0.000 title claims description 9
- 238000000108 ultra-filtration Methods 0.000 claims abstract description 19
- 238000001914 filtration Methods 0.000 claims abstract description 17
- 238000011001 backwashing Methods 0.000 claims abstract description 4
- 239000012466 permeate Substances 0.000 claims description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract description 18
- 239000012528 membrane Substances 0.000 abstract description 17
- 239000004744 fabric Substances 0.000 abstract description 8
- 239000010721 machine oil Substances 0.000 abstract description 6
- 239000000047 product Substances 0.000 abstract description 2
- 239000000706 filtrate Substances 0.000 abstract 1
- 239000007788 liquid Substances 0.000 description 17
- 229910052742 iron Inorganic materials 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 241000238634 Libellulidae Species 0.000 description 3
- 239000003921 oil Substances 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 2
- 230000003749 cleanliness Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 240000008881 Oenanthe javanica Species 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000011038 discontinuous diafiltration by volume reduction Methods 0.000 description 1
- -1 etc. are removed Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002480 mineral oil Substances 0.000 description 1
- 235000010446 mineral oil Nutrition 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は水溶性鉱物油を使用している圧延液中の不純物
の除去方法に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method for removing impurities from a rolling fluid using water-soluble mineral oil.
圧延液を循環使用している設備において、従来循環中に
混入する機械油、鉄分等の不純物は、浮上するものにつ
いてはマグネット七ノぐレータ−１戸布巻取弐ｐ過器、
もしくはオイルスキマ一方式で除去した後、沈澱するも
のを除去するため静置分離してオーバーフローさせる方
法で除去してぃた。又、その他、ｐ布又は限外濾過膜に
よる処理方法も考えられる。In equipment that circulates rolling fluid, impurities such as machine oil and iron that are mixed in during circulation are conventionally removed using a magnet seven grator, one cloth winder, and two filters for those that float to the surface.
Alternatively, after removing with an oil skimmer, in order to remove the precipitate, it was removed by standing and separating and allowing it to overflow. In addition, treatment methods using p-cloth or ultrafiltration membranes may also be considered.
しかし、圧延液中に含まれる微粒径の不純物については
、従来のマグネット七ノぞレータ−１戸布巻取弐濾過器
、オイルスキマー等による方法では除去することが困難
であシ、圧延液への機械油、鉄粉等の混入によシ異物校
込、抑流など品質１作業トラブルが発生して問題となる
ため、経時的にその都度新液と交換する必要があった。However, it is difficult to remove fine particle-sized impurities contained in the rolling fluid using conventional methods such as magnetic sieve filters, oil skimmers, etc. Contamination with machine oil, iron powder, etc. caused quality work problems such as foreign matter intrusion and flow control, which caused problems, so it was necessary to replace the fluid with new fluid each time.
また、戸布による逆洗式濾過方法は、戸布の逆洗時に発
生するドレン液は圧延液を含んでいるＫもかかわらず、
不純物濃度が高いため全景廃棄しなければならないこと
、又限外テ過膜による処理方法は、大蓋の圧延液を処理
する場合には膜面積が大きくなるなど経済的に成り立た
ないこと等の理由で採用されなかった。In addition, in the backwash filtration method using a door cloth, although the drain liquid generated when backwashing the door cloth contains rolling fluid,
Due to the high impurity concentration, the entire surface must be discarded, and the treatment method using an ultra-tetrafiltration membrane is not economically viable when treating rolling fluid with a large lid because the membrane area becomes large. was not adopted.
本発明は、不純物を含んだ圧延液を濾過処理しながら循
環使用すると共に、濾過処理装置を逆洗して発生する逆
洗ドレン液を限外濾過処理し、透過液を回収再利用する
ことを特徴とする圧延液からの不純物除去方法である。The present invention involves circulating the rolling fluid containing impurities while being filtered, and ultrafiltrating the backwash drain fluid generated by backwashing the filtration equipment, and collecting and reusing the permeated fluid. This is a characteristic method for removing impurities from rolling fluid.
不純物を含んだ圧延液を全量濾過処理することによシ、
鉄粉等が除去されると共に機械油も鉄粉表面にコーティ
ングされた状態で除去される。By completely filtering the rolling fluid containing impurities,
Iron powder, etc. are removed, and machine oil is also removed while being coated on the surface of the iron powder.
一方、濾過処理装置を逆洗し、発生した逆洗ドレン液中
に含まれる機械油、鉄粉等の不純物を限外濾過処理で除
去し、透過液を循環使用している圧延液に戻すことによ
り循環液は清浄性が維持され、製品品質の確保及び連続
圧延操業の安定化が図られる。On the other hand, the filtration processing equipment is backwashed, impurities such as machine oil and iron powder contained in the generated backwash drain liquid are removed by ultrafiltration treatment, and the permeated liquid is returned to the rolling fluid used for circulation. This maintains the cleanliness of the circulating fluid, ensuring product quality and stabilizing continuous rolling operations.
以下、本発明の実施例を図面を用いて説明する。 Embodiments of the present invention will be described below with reference to the drawings.
第１図において圧延ミル３で圧延ロールの清浄に使用さ
れた不純物を含む圧延液ａはダーティタンク４において
浮上する不純物については一部オイルスキマー等で除去
した後、濾過処理装置１ヘフイーＰされる。In FIG. 1, the rolling liquid a containing impurities used to clean the rolling rolls in the rolling mill 3 is partially removed using an oil skimmer or the like to remove some of the impurities that float to the surface in the dirty tank 4, and then passed through the filtration treatment device 1 .
濾過処理装置１では、圧延液は戸布によって濾過処理さ
れる。処理された戸液すはクリーンタンク５へ送られ、
再び圧延ロールの清浄に循環使用される。In the filtration processing device 1, the rolling fluid is filtered using a door cloth. The treated door liquid is sent to the clean tank 5,
It is used again to clean the rolling rolls.
一方、戸布側に分離された機械油、鉄粉等の不純物は一
定時間毎に圧縮空気Ｃにより逆洗され、ここで発生する
逆洗Ｐレン液ｄはドレンタンク６ヘ一旦貯められる。ｒ
シンタンク６中の逆洗ドレン液はポンプ８によシ限外濾
過膜装置２へ連続的にフィードされる。On the other hand, impurities such as machine oil and iron powder separated on the door cloth side are backwashed by compressed air C at regular intervals, and the backwash P drain liquid d generated here is temporarily stored in the drain tank 6. r
The backwash drain liquid in the thin tank 6 is continuously fed to the ultrafiltration membrane device 2 by a pump 8.
限外−過膜装置２では限外濾過膜モジュールを用いて逆
洗Ｐレン液を循環透過処理し、不純物は１０倍以上に濃
縮される。In the ultrafiltration device 2, the backwash P-lens liquid is circulated and permeated using an ultrafiltration membrane module, and impurities are concentrated ten times or more.
限外濾過膜装置２を透過した透過液ｅは循環再利用する
ためにクリーンタンク５へ送られ、前処理装置１の戸液
と混合することによシ圧延液はよシ清浄化される。一方
、不純物を含んだ濃縮液ｆはドレンタンク６に戻し、濃
縮操作を行なうことによシ１０倍以上に減容濃縮され、
最終的にドレンタンク６の排出ノズル１０よシ系外へ排
出される。この排出量は減容濃縮の割合により決定され
る。The permeated liquid e that has passed through the ultrafiltration membrane device 2 is sent to a clean tank 5 for circulation and reuse, and is mixed with the liquid from the pretreatment device 1 to thoroughly clean the rolling liquid. On the other hand, the concentrated liquid f containing impurities is returned to the drain tank 6, and by performing a concentration operation, the volume is reduced and concentrated by more than 10 times,
Finally, it is discharged out of the system through the discharge nozzle 10 of the drain tank 6. This discharge amount is determined by the volume reduction concentration rate.
不純物による経時的な膜の汚れは対しては１回／１時間
定期的に？−ル洗浄を行ない、透過液量は回復される。If the membrane gets dirty over time due to impurities, do you do it once/hourly? - The permeate volume is recovered by cleaning the permeate.
第２図に本実施例による処理効果の一例を示す。FIG. 2 shows an example of the processing effect according to this embodiment.
本実施例で連続処理している圧延液は、濾過処理装置１
の入口液では鉄分液の透明度を示す反射率（％）が６０
〜７０％であるが、濾過処理装置１出口液では７０〜８
０％に向上して゛いる。The rolling fluid that is continuously processed in this example is filtered by the filtration processing device 1.
The inlet liquid has a reflectance (%) of 60, which indicates the transparency of the iron liquid.
~70%, but for the filtration device 1 outlet liquid, it is 70~8%.
It has improved to 0%.
さらに、逆洗ドレンを処理する限外濾過膜装置２の入口
液の鉄分濃度は圧延障害発生領域（鉄分濃度１０ ｐｐ
ｍ以上）に近い濃度となっているが、限外濾過膜装置２
の出口液は鉄分濃度２ ｐｐｍ前後まで清浄化されてい
る。その結果、反射率の大きな向上もみられる。Furthermore, the iron concentration of the inlet liquid of the ultrafiltration membrane device 2 that processes backwash drain is in the rolling failure occurrence region (iron concentration 10 pp
m or more), but the ultrafiltration membrane device 2
The outlet liquid has been purified to an iron concentration of around 2 ppm. As a result, a significant improvement in reflectance can be seen.
限外濾過膜装置による圧延液の清浄効果の一例を表１に
示す。Table 1 shows an example of the cleaning effect of the rolling fluid by the ultrafiltration membrane device.
表１
なお、本実施例では、濾過処理装置１によって濾過処理
装置１に供給される圧延液の約９９．４Ｘは濾過処理さ
れて循環使用され、約０．６％は逆洗ドレンとして限外
濾過膜装置２に供給される。又限外濾過膜装置２によっ
て濾過処理装置１に供給される圧延液の約０．４５％（
限外濾過膜装置２に供給された量の約９０％）は透過処
理されて循環使用され、約０．０６％（限外濾過膜装置
２に供給された量の約１０％）は減容濃縮された不純物
と共に系外に排出される。従って、濾過処理装置１に供
給される圧延液の内約９９．９４％は回収され、循環使
用される。Table 1 In this example, about 99.4X of the rolling fluid supplied to the filtration device 1 is filtered and recycled, and about 0.6% is used as backwash drain. It is supplied to the filtration membrane device 2. Also, approximately 0.45% (
Approximately 90% of the amount supplied to the ultrafiltration membrane device 2) is permeated and recycled, and approximately 0.06% (approximately 10% of the amount supplied to the ultrafiltration membrane device 2) is reduced in volume. It is discharged from the system together with concentrated impurities. Therefore, approximately 99.94% of the rolling fluid supplied to the filtration treatment device 1 is recovered and recycled.
本発明による不純物除去方法にて約１年間操業を続けた
結果、濾過処理装置１及び限外濾過膜装置２の透過後の
圧延液性状は圧延安定条件を満足しておシ、圧延液に起
因する品質トラブルは全く発生しなかった。As a result of continuous operation for about one year using the method for removing impurities according to the present invention, the properties of the rolling fluid after passing through the filtration treatment device 1 and the ultrafiltration membrane device 2 satisfied the rolling stability conditions. No quality problems occurred at all.
〔発明の効果〕
本発明は、圧延液中の不純物の除去方法として濾過処理
と限外濾過処理とを併用することによシ圧延液清浄性維
持をはかシ、圧延鋼板の品質向上に大きな効果を得るこ
とができる。[Effects of the Invention] The present invention maintains the cleanliness of the rolling fluid by using a combination of filtration and ultrafiltration as a method for removing impurities in the rolling fluid, which greatly improves the quality of rolled steel sheets. effect can be obtained.
又、限外濾過処理により圧延液が清浄化される〜 だけ
でなく、濾過処理から発生する逆洗ドレン液の９０％以
上が圧延液として回収されるため、操業コストの低減化
がはかられる。In addition, the ultrafiltration process not only cleans the rolling fluid, but also reduces operating costs because more than 90% of the backwash drain fluid generated from the filtration process is recovered as rolling fluid. .
第１図は本発明による圧延液からの不純物除去フローの
例を示す図、第２図は本発明による処理効果を示す図で
ある。
１−濾過処理装置、２・・・限外濾過膜装置、３−・・
圧延ミル、４−ダーティタンク、５−クリーンタンク、
６−Ｐレンタンク、７，８．９・・・ポンプ、１〇−排
出ノズル。
代理人 弁理士 秋 沢 政 光
他１名
芹２図
鉄弁 ＜７’７’ｖｔンFIG. 1 is a diagram showing an example of a flow for removing impurities from a rolling fluid according to the present invention, and FIG. 2 is a diagram showing the processing effect according to the present invention. 1-filtration processing device, 2... ultrafiltration membrane device, 3-...
Rolling mill, 4-dirty tank, 5-clean tank,
6-P Rentank, 7,8.9...Pump, 10-Discharge nozzle. Agent: Patent attorney Masamitsu Aki Sawa and 1 other person Seri 2 illustration iron valve <7'7'vtn
Claims (1)
用すると共に、濾過処理装置を逆洗して発生する逆洗ド
レン液を限外濾過処理し、透過液を回収再利用すること
を特徴とする圧延液からの不純物除去方法。(1) The rolling fluid containing impurities is filtered and recycled, and the backwash drain fluid generated by backwashing the filtration equipment is subjected to ultrafiltration, and the permeate is collected and reused. A method for removing impurities from rolling fluid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21203386A JPS6368695A (en) | 1986-09-09 | 1986-09-09 | Method for removing impurities from rolling fluid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21203386A JPS6368695A (en) | 1986-09-09 | 1986-09-09 | Method for removing impurities from rolling fluid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6368695A true JPS6368695A (en) | 1988-03-28 |
Family
ID=16615754
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP21203386A Pending JPS6368695A (en) | 1986-09-09 | 1986-09-09 | Method for removing impurities from rolling fluid |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6368695A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6126105A (en) * | 1998-03-10 | 2000-10-03 | Daiwa Seiko, Inc. | Antibacklash brake with centrifugal operator |
| EP2039893A2 (en) * | 2007-09-18 | 2009-03-25 | MAN Diesel SE | Device and method for cleaning lubricants and lubricant circuit |
| JP2013006132A (en) * | 2011-06-22 | 2013-01-10 | Daido Steel Co Ltd | Circulation supply equipment of rolling coolant |
| JP2015188831A (en) * | 2014-03-28 | 2015-11-02 | 株式会社日進製作所 | liquid purification system |
-
1986
- 1986-09-09 JP JP21203386A patent/JPS6368695A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6126105A (en) * | 1998-03-10 | 2000-10-03 | Daiwa Seiko, Inc. | Antibacklash brake with centrifugal operator |
| EP2039893A2 (en) * | 2007-09-18 | 2009-03-25 | MAN Diesel SE | Device and method for cleaning lubricants and lubricant circuit |
| EP2039893A3 (en) * | 2007-09-18 | 2011-01-05 | MAN Diesel SE | Device and method for cleaning lubricants and lubricant circuit |
| JP2013006132A (en) * | 2011-06-22 | 2013-01-10 | Daido Steel Co Ltd | Circulation supply equipment of rolling coolant |
| JP2015188831A (en) * | 2014-03-28 | 2015-11-02 | 株式会社日進製作所 | liquid purification system |
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