[go: up one dir, main page]

EP0515011A2 - Procédé pour la séparation des huiles ou émulsions huileuses des boues de rectification - Google Patents

Procédé pour la séparation des huiles ou émulsions huileuses des boues de rectification Download PDF

Info

Publication number
EP0515011A2
EP0515011A2 EP92250125A EP92250125A EP0515011A2 EP 0515011 A2 EP0515011 A2 EP 0515011A2 EP 92250125 A EP92250125 A EP 92250125A EP 92250125 A EP92250125 A EP 92250125A EP 0515011 A2 EP0515011 A2 EP 0515011A2
Authority
EP
European Patent Office
Prior art keywords
sludge
oil
cleaning
cleaning liquid
rinsing water
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.)
Withdrawn
Application number
EP92250125A
Other languages
German (de)
English (en)
Other versions
EP0515011A3 (en
Inventor
Dieter Böttger
Elmar Frese
Jörg Oberdiek
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Vodafone GmbH
Original Assignee
Mannesmann AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Mannesmann AG filed Critical Mannesmann AG
Publication of EP0515011A2 publication Critical patent/EP0515011A2/fr
Publication of EP0515011A3 publication Critical patent/EP0515011A3/de
Withdrawn legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B55/00—Safety devices for grinding or polishing machines; Accessories fitted to grinding or polishing machines for keeping tools or parts of the machine in good working condition
    • B24B55/02—Equipment for cooling the grinding surfaces, e.g. devices for feeding coolant
    • B24B55/03—Equipment for cooling the grinding surfaces, e.g. devices for feeding coolant designed as a complete equipment for feeding or clarifying coolant

Definitions

  • the invention relates to a method for cleaning metallic grinding slurries from oil or oil-containing emulsions.
  • chips When metal is machined, chips are created, which in many cases are contaminated by oil or oil / water emulsions. It is known to reduce the residual oil content of the chips to less than 3 to 4 percent by weight by centrifuging, but this is inadequate for further use or landfilling. Especially when the chips produced when processing the metals are very fine, as is the case with grinding processes, all previously known methods fail. In particular, such fine chips with a thickness of 1 to 25 ⁇ m and a length of 1 ⁇ m to 1 mm should not be cleaned of the oil or the emulsion by centrifuging, because they are carried away with the liquid. Since the chip shape is arch-like in almost all cases, the chips get caught in one another, enclose other solids, such as corundum from the grinding wheels, and had a large amount of liquid in them.
  • the residual oil content of the sludge must be less than 1 percent by weight in accordance with the applicable regulations. If this value is reached, it is also possible to feed the cleaned grinding sludge to the smelting again, with small amounts of corundum not interfering.
  • the cleaning liquid is kept at a temperature> 50 ° C.
  • the washing process is preferably carried out discontinuously in at least three batches, the cleaning liquid being drained off between the batches and exchanged for new cleaning liquid.
  • the sludge cake is then discharged and dewatered and fed to a rinsing process in which fresh water at about 40 ° C. is fed to the sludge.
  • Rinsing is also carried out in at least three batches, with the rinsing water being drained between the batches and exchanged for fresh water.
  • the exchanged rinsing water Since the exchanged rinsing water has a proportion of fine metal chips due to the higher surface tension than in the washing water, it is passed through a magnetic separator. The metal chips deposited there are fed to the rinsed sludge and, if necessary, dried and pressed together with it. The result is an almost dry, briquettable sludge that contains less than 1% by weight of residual oil.
  • Both the cleaning liquid and the rinsing water are prepared after chemical splitting and also separated from the residual oil.
  • the rinse water - enriched with cleaner concentrate - are fed to the washing process.
  • the carry-over losses and losses are supplemented by the concentrated and disposed of cleaner / waste oil mixture and wash-active cleaners are returned to the circuit.
  • the treated rinse water serves as the preparation water.
  • the cleaning liquid is preferably processed by chemical splitting, ultrafiltration, electroflotation or distillation.
  • the rinse water is processed by ultrafiltration, electroflotation or chemical cleavage.
  • the method according to the invention advantageously closes a gap in the known cleaning methods for chips and makes parts of these methods applicable for grinding sludge, so that their disposal is also possible.
  • a residual moisture of less than 40% by weight is obtained after rinsing the sludge, the residual oil content - based on the amount of dry chips - being less than 1% by weight.
  • 1 and 2 denote two separate containers, with grinding sludge from an oil / water emulsion being collected in container 1 and grinding lubricant containing only oil being collected in container 2.
  • the sludges are fed separately from one another to a press 3 via a discharge device, in which a large part of the emulsion residues are pressed out of the grinding sludge of the container 1 and a large part of the oil is pressed out of the grinding sludge of the container 2.
  • the pressed-off emulsion is fed to a chemical breakdown at 4, where the oil is drawn off at 5 and the remaining water is fed to a circulation tank 7, which is described later, via a subsequent fine cleaning 6, preferably ultrafiltration .
  • the sludge leaving the press 3 as a cake is fed to a wash box 9 by a shredder 8.
  • This consists of a container with a cleaning liquid which is introduced from the preparation station 10.
  • the finest chips are whirled up in the wash box 9 via agitators and nozzles in order to make them accessible to the detergent liquid for the detergent liquid.
  • a temperature of approx. 60 ° C is set.
  • the washing process is preferably carried out in three batches, the cleaning liquid being drained off after each batch of about 15 minutes washing time and being returned to the washing box after preparation and, if necessary, chemical splitting and addition of further cleaning concentrate.
  • the grinding sludge washed in this way is fed via a discharge device from the wash box to a dewatering station 11, which can consist, for example, of a vibrating sieve belt or a discharge section.
  • the thus washed and dewatered sludge is passed into a rinsing box 12, where it is rinsed with fresh water at about 40 ° C.
  • a rinsing box 12 where it is rinsed with fresh water at about 40 ° C.
  • at least three rinsing processes are carried out, the rinsing water being renewed after each rinsing process. It has been shown that both washing and rinsing in three batches, each lasting about 15 minutes, is much more effective than continuous cleaning with pumped-in rinsing water or pumped-in cleaning liquid.
  • the rinsing water is fed to a treatment 14 via a circulation tank 13, where it is freed of residual oil, for example by ultrafiltration.
  • a magnetic separator 15 is provided within the circulation container 13 or parallel thereto, with the aid of which fine metal chips are removed from the rinsing water.
  • the chips separated in this way are fed to the repeatedly rinsed sludge leaving the rinsing box and briquetted or dried together with it in a press.
  • the briquettes discharged at 17 or the almost dry sludge contain less than 1 percent by weight of residual oil.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
  • Treatment Of Sludge (AREA)
  • Processing Of Solid Wastes (AREA)
EP19920250125 1991-05-23 1992-05-19 Process for the cleaning of metallic grinding slurries from oil or oily emulsions Withdrawn EP0515011A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4117060 1991-05-23
DE19914117060 DE4117060A1 (de) 1991-05-23 1991-05-23 Verfahren zum reinigen metallischer schleifschlaemme von oel oder oelhaltigen emulsionen

Publications (2)

Publication Number Publication Date
EP0515011A2 true EP0515011A2 (fr) 1992-11-25
EP0515011A3 EP0515011A3 (en) 1993-02-03

Family

ID=6432377

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19920250125 Withdrawn EP0515011A3 (en) 1991-05-23 1992-05-19 Process for the cleaning of metallic grinding slurries from oil or oily emulsions

Country Status (2)

Country Link
EP (1) EP0515011A3 (fr)
DE (1) DE4117060A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7223344B2 (en) 2001-05-29 2007-05-29 Memc Electronic Materials, Spa Method for treating an exhausted glycol-based slurry
WO2011061039A1 (fr) * 2009-11-20 2011-05-26 Erwin Junker Maschinenfabrik Gmbh Procédé pour séparer de l'huile de meulage de poussières de meulage; station de séparation pour la mise en œuvre du procédé et installation technologique
DE102012209818A1 (de) 2012-06-12 2013-12-12 Erwin Junker Grinding Technology A.S. Vorrichtung und Verfahren zum Abtrennen von Schleiföl aus Schleifschlämmen
CN113352673A (zh) * 2021-06-22 2021-09-07 喀什光华现代农业有限公司 一种高油脂含量种子的冷榨油机

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10007542A1 (de) * 2000-02-18 2001-08-23 Boehringer Daniel Schleifschlammpresse
UA76356C2 (en) * 2004-11-30 2006-07-17 Ind Minerals Ltd Liability Com Method of regeneration of abrasive

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2788126A (en) * 1953-09-15 1957-04-09 Indiana Commercial Filters Cor Clarifier
GB2017517B (en) * 1978-03-10 1982-06-23 Fiat Ricerche Recovery of the components of grinding sludge

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7223344B2 (en) 2001-05-29 2007-05-29 Memc Electronic Materials, Spa Method for treating an exhausted glycol-based slurry
WO2011061039A1 (fr) * 2009-11-20 2011-05-26 Erwin Junker Maschinenfabrik Gmbh Procédé pour séparer de l'huile de meulage de poussières de meulage; station de séparation pour la mise en œuvre du procédé et installation technologique
CN102712077A (zh) * 2009-11-20 2012-10-03 埃尓温·容克尓机械制造有限公司 用于从磨削油泥中分离研磨油的方法、用于实施该方法的分离站以及工艺流程设备
DE102012209818A1 (de) 2012-06-12 2013-12-12 Erwin Junker Grinding Technology A.S. Vorrichtung und Verfahren zum Abtrennen von Schleiföl aus Schleifschlämmen
WO2013186199A1 (fr) 2012-06-12 2013-12-19 Erwin Junker Grinding Technology A.S. Dispositif et procédé de séparation de l'huile de meulage contenue dans de la boue de meulage
JP2015525138A (ja) * 2012-06-12 2015-09-03 エルヴィン ユンカー グラインディング テクノロジー アー．エス． 研削スラッジから研削油を分離するための装置と方法
CN113352673A (zh) * 2021-06-22 2021-09-07 喀什光华现代农业有限公司 一种高油脂含量种子的冷榨油机

Also Published As

Publication number Publication date
EP0515011A3 (en) 1993-02-03
DE4117060A1 (de) 1992-11-26

Similar Documents

Publication Publication Date Title
DE2609705B2 (de) Verfahren zum Entschleimen von Triglyceridölen
DE3208704C2 (de) Verfahren zur chemischen Entfernung der Asche aus Kohle sowie Vorrichtungen zur Durchführung dieses Verfahrens
DE1517699A1 (de) Verfahren zum Entoelen von industriellen Abwaessern
DE3223011A1 (de) Verfahren und anlage zur reinigung von mit fettigen substanzen, insbesondere oel, verschmutztem walzzunder und zur gewinnung von erdoel aus oelhaltigen mineralien
DE2641143A1 (de) Verfahren und vorrichtung zum gewinnen von oelen aus oelhaltigen rohstoffen
EP0515011A2 (fr) Procédé pour la séparation des huiles ou émulsions huileuses des boues de rectification
DE2637553A1 (de) Oelemulsionsbearbeitung
DE10024771B4 (de) Anlage und Verfahren zum Separieren von Grauguss- und Aluminiummischspänen
DE2719507C3 (de) Verfahren zur Reinigung eines fett- und erdhaltigen Abwassers mit einem Lösungsmittel
DE3043220C2 (de) Verfahren und Anlage zur Reduzierung des Ölgehaltes von ölverschmutztem Walzsinter u.dgl.
DE2911272C2 (de) Verfahren und Vorrichtung zum Aufbereiten eines in einem Kernkraftwerk anfallenden radioaktiven Abwassers
DE69515436T2 (de) Verfahren für die Behandlung von Wasser bei der Reinigung von Zuckerrüben
DE3146809C1 (de) Verfahren und Anlage zur Reduzierung des Ölgehaltes von ölverschmutztem Walzsinter
DE4137445C2 (fr)
DE1617012C3 (de) Verfahren zur Gewinnung von Lanolin aus Abwassern der Wollwäsche
DE4105368C1 (en) Handling photographic paper having plastic coating - includes dissolving cellular material from plastic using strong base
DE3120463C1 (de) Verfahren und Anlage zur Reduzierung des Ölgehaltes von ölverschmutztem Walzsinter u.dgl.
EP1330413B1 (fr) Procede d'evacuation de dechets produits dans une usine d'anodisation d'aluminium
DE2440386C3 (fr)
DE3212120A1 (de) Verfahren zum aufbereiten oelhaltiger schlaemme
DE2435862A1 (de) Verfahren zum waschen und entfetten von tierischen fasern, insbesondere wollfasern
EP1216735B1 (fr) Elimination de l'huile dans de l'eau usée
DE3821760A1 (de) Verfahren zur rueckgewinnung von pigmenten und bindemitteln aus lack-koagulaten
WO1999011745A1 (fr) Procede de nettoyage et de traitement des eaux
DE4329719A1 (de) Trennverfahren

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): DE FR GB IT

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): DE FR GB IT

17P Request for examination filed

Effective date: 19930317

17Q First examination report despatched

Effective date: 19940427

18W Application withdrawn

Withdrawal date: 19950303

R18W Application withdrawn (corrected)

Effective date: 19950303