GB2331253A - Process for removing fine iron containing particles from liquids containing the same - Google Patents

Process for removing fine iron containing particles from liquids containing the same

Info

Publication number
GB2331253A
GB2331253A GB9902325A GB9902325A GB2331253A GB 2331253 A GB2331253 A GB 2331253A GB 9902325 A GB9902325 A GB 9902325A GB 9902325 A GB9902325 A GB 9902325A GB 2331253 A GB2331253 A GB 2331253A
Authority
GB
United Kingdom
Prior art keywords
particles
cooling
intermediate liquor
liquor
scale
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Withdrawn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
GB9902325A
Other versions
GB9902325D0 (en
Inventor
David Jefferson Mawer
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.)
Kvaerner Technology and Research Ltd
Original Assignee
Kvaerner Technology and Research Ltd
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 Kvaerner Technology and Research Ltd filed Critical Kvaerner Technology and Research Ltd
Publication of GB9902325D0 publication Critical patent/GB9902325D0/en
Publication of GB2331253A publication Critical patent/GB2331253A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D21/00—Separation of suspended solid particles from liquids by sedimentation
    • B01D21/0009—Settling tanks making use of electricity or magnetism
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C1/00—Magnetic separation
    • B03C1/02—Magnetic separation acting directly on the substance being separated
    • B03C1/28—Magnetic plugs and dipsticks
    • B03C1/288—Magnetic plugs and dipsticks disposed at the outer circumference of a recipient
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B45/02—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for lubricating, cooling, or cleaning
    • B21B45/0269—Cleaning
    • B21B45/029—Liquid recovering devices
    • B21B45/0293—Recovering coolants
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/12—Accessories for subsequent treating or working cast stock in situ
    • B22D11/124—Accessories for subsequent treating or working cast stock in situ for cooling
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/48—Treatment of water, waste water, or sewage with magnetic or electric fields
    • C02F1/488—Treatment of water, waste water, or sewage with magnetic or electric fields for separation of magnetic materials, e.g. magnetic flocculation
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/56—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering characterised by the quenching agents
    • C21D1/60—Aqueous agents
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B27/00—Rolls, roll alloys or roll fabrication; Lubricating, cooling or heating rolls while in use
    • B21B27/06—Lubricating, cooling or heating rolls
    • B21B27/10—Lubricating, cooling or heating rolls externally
    • B21B2027/103—Lubricating, cooling or heating rolls externally cooling externally
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working

Abstract

A method of treating a coolant liquid used for cooling rolls of a rolling mill or for cooling a continuous caster and contaminated with particles of scale is described. This comprises passing the contaminated coolant liquid through a primary settling zone (11), retaining the cooling liquid in the primary settling zone (11) for a period sufficient to permit substantially all particles of scale having a particle size greater than about 200 Ám to settle out under gravity from suspension, recovering from the primary settling zone (11) an intermediate liquor which is substantially free from particles of scale having a particle size greater than about 200 Ám, passing the intermediate liquor along a flow path which includes a portion (13) wherein the intermediate liquor is flowing under substantially streamline flow conditions, said portion (13) comprising a length of conduit (16) made of non-magnetic material adjacent to which is or are positioned one or more magnets (23, 24) arranged to produce a substantially constant magnetic field within said length of conduit (16), subjecting the intermediate liquor in passage through said portion (13) to said substantially constant magnetic field thereby to coagulate iron-containing particles in the intermediate liquor and enhance sedimentation of resulting coagulated particles in the intermediate liquor, and collecting resulting treated liquor now containing less than about 50 ppm solids by weight for reuse for cooling the oils (2, 3) of a rolling mill or for cooling a continuous caster.
GB9902325A 1996-09-12 1997-09-05 Process for removing fine iron containing particles from liquids containing the same Withdrawn GB2331253A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB9619076A GB2317126A (en) 1996-09-12 1996-09-12 Removing iron particles from coolant liquids
PCT/GB1997/002390 WO1998011183A1 (en) 1996-09-12 1997-09-05 Process for removing fine iron containing particles from liquids containing the same

Publications (2)

Publication Number Publication Date
GB9902325D0 GB9902325D0 (en) 1999-03-24
GB2331253A true GB2331253A (en) 1999-05-19

Family

ID=10799835

Family Applications (2)

Application Number Title Priority Date Filing Date
GB9619076A Withdrawn GB2317126A (en) 1996-09-12 1996-09-12 Removing iron particles from coolant liquids
GB9902325A Withdrawn GB2331253A (en) 1996-09-12 1997-09-05 Process for removing fine iron containing particles from liquids containing the same

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB9619076A Withdrawn GB2317126A (en) 1996-09-12 1996-09-12 Removing iron particles from coolant liquids

Country Status (4)

Country Link
AU (1) AU717232B2 (en)
BR (1) BR9711770A (en)
GB (2) GB2317126A (en)
WO (1) WO1998011183A1 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2896171B1 (en) 2006-01-19 2010-12-17 Omya Development Ag PROCESS FOR MANUFACTURING PARTICLES BASED ON NATURAL CALCIUM CARBONATE AND SALTS OF ETHYLENE ACRYLIC ACID, SUSPENSIONS AND DRY PIGMENTS OBTAINED, AND USES THEREOF
NL2017443B1 (en) * 2016-09-09 2018-03-15 Mhd Tech B V Device and method for magnetic separation
EP3528916A1 (en) 2016-10-18 2019-08-28 Ecolab USA Inc. Device to separate water and solids of spray water in a continuous caster, and method to monitor and control corrosion background
DE102020213077A1 (en) * 2020-10-16 2022-04-21 Sms Group Gmbh Process for the treatment of cooling circuit water contaminated with organic substances and inorganic particles
DE102020213078A1 (en) * 2020-10-16 2022-04-21 Sms Group Gmbh Process for eliminating legionella from cooling circuit water contaminated with organic substances and inorganic particles
CN113117685B (en) * 2021-04-21 2023-06-09 湖北润驰环保科技有限公司 Waste lubricating oil iron removing agent and preparation method thereof

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2607492A (en) * 1949-01-27 1952-08-19 Standard Oil Dev Co Apparatus for removing iron impurities from fluid streams
US3351203A (en) * 1965-08-17 1967-11-07 Gen Electric Separation apparatus and method for its operation
US3536198A (en) * 1968-10-07 1970-10-27 Eriez Mfg Co Apparatus for magnetic flocculation of agglomerates
US3549527A (en) * 1969-11-14 1970-12-22 Nalco Chemical Co Method of clarifying aqueous suspensions
US3697420A (en) * 1968-03-19 1972-10-10 Donald Stapf Blaisdell Method and apparatus for treatment of aqueous liquor
US3714037A (en) * 1971-01-27 1973-01-30 Crucible Inc Flocculating apparatus and method
US4148731A (en) * 1977-12-27 1979-04-10 Brigante Miguel F Multi-stage apparatus for the separation of finely divided solids from liquids
FR2697760A1 (en) * 1992-11-10 1994-05-13 Dipan France Sedimentation bowl for fluid flow - has inner vertical partition dividing chamber into intake and outlet compartments, with magnetic trap and filter element.

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5524155A (en) * 1995-01-06 1996-06-04 Texas Instruments Incorporated Demultiplexer for wavelength-multiplexed optical signal

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2607492A (en) * 1949-01-27 1952-08-19 Standard Oil Dev Co Apparatus for removing iron impurities from fluid streams
US3351203A (en) * 1965-08-17 1967-11-07 Gen Electric Separation apparatus and method for its operation
US3697420A (en) * 1968-03-19 1972-10-10 Donald Stapf Blaisdell Method and apparatus for treatment of aqueous liquor
US3536198A (en) * 1968-10-07 1970-10-27 Eriez Mfg Co Apparatus for magnetic flocculation of agglomerates
US3549527A (en) * 1969-11-14 1970-12-22 Nalco Chemical Co Method of clarifying aqueous suspensions
US3714037A (en) * 1971-01-27 1973-01-30 Crucible Inc Flocculating apparatus and method
US4148731A (en) * 1977-12-27 1979-04-10 Brigante Miguel F Multi-stage apparatus for the separation of finely divided solids from liquids
FR2697760A1 (en) * 1992-11-10 1994-05-13 Dipan France Sedimentation bowl for fluid flow - has inner vertical partition dividing chamber into intake and outlet compartments, with magnetic trap and filter element.

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
Chemical Abstracts 86: 21445q & Yosui To Haisui, 1976, Vol 18(5) pages 597-600 *

Also Published As

Publication number Publication date
AU4127197A (en) 1998-04-02
BR9711770A (en) 1999-08-24
GB9902325D0 (en) 1999-03-24
GB2317126A (en) 1998-03-18
WO1998011183A1 (en) 1998-03-19
AU717232B2 (en) 2000-03-23
GB9619076D0 (en) 1996-10-23

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Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)