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GB1451343A - Scrap preparation - Google Patents

Scrap preparation

Info

Publication number
GB1451343A
GB1451343A GB226473A GB226473A GB1451343A GB 1451343 A GB1451343 A GB 1451343A GB 226473 A GB226473 A GB 226473A GB 226473 A GB226473 A GB 226473A GB 1451343 A GB1451343 A GB 1451343A
Authority
GB
United Kingdom
Prior art keywords
scrap
cooled
coolant
circuit
chamber
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.)
Expired
Application number
GB226473A
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.)
British Steel Corp
Original Assignee
British Steel Corp
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 British Steel Corp filed Critical British Steel Corp
Priority to GB226473A priority Critical patent/GB1451343A/en
Publication of GB1451343A publication Critical patent/GB1451343A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C19/00—Other disintegrating devices or methods
    • B02C19/18—Use of auxiliary physical effects, e.g. ultrasonics, irradiation, for disintegrating
    • B02C19/186—Use of cold or heat for disintegrating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C19/00—Other disintegrating devices or methods
    • B02C19/0056—Other disintegrating devices or methods specially adapted for specific materials not otherwise provided for
    • B02C19/0062—Other disintegrating devices or methods specially adapted for specific materials not otherwise provided for specially adapted for shredding scrap metal, e.g. automobile bodies
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D29/00—Arrangement or mounting of control or safety devices
    • F25D29/001—Arrangement or mounting of control or safety devices for cryogenic fluid systems

Landscapes

  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Separation By Low-Temperature Treatments (AREA)

Abstract

1451343 Scrap preparation BRITISH STEEL CORP 16 Jan 1974 [16 Jan 1973] 2264/73 Addition to 1381726 Heading C7D In a process for the fragmentation of cooled scrap, the scrap is cooled in a chamber 14 in the secondary circuit 11 of a heat exchanger 13 by direct contact with cooled gaseous nitrogen or air. Further cooling, either in a continuous or batch operation, by a liquified but normally gaseous coolant is carried out in a secondary apparatus 42 which includes sprays 43 which direct liquid nitrogen on to the cooled scrap 44 prior to feeding to the fragmentation unit 25. The vaporized coolant collected below the cooled scrap 44 is fed to a high pressure blower 46 and receiver 48 and returned to the cooling circuit 11 to make up for leakage losses in the chamber 44. A flow control valve 41 in circuit 11, actuated by controller 53 controlled by gas flow transducers 28, 29 and 54. permits bleed off of coolant gas to maintain chamber 14 at substantially atmospheric pressure, and the bled coolant may be used to pre-cool the scrap. The primary circuit 10 of the heat exchanger 13 is fed with liquid methane gas from a liquification plant 12.
GB226473A 1973-01-16 1973-01-16 Scrap preparation Expired GB1451343A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB226473A GB1451343A (en) 1973-01-16 1973-01-16 Scrap preparation

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB226473A GB1451343A (en) 1973-01-16 1973-01-16 Scrap preparation

Publications (1)

Publication Number Publication Date
GB1451343A true GB1451343A (en) 1976-09-29

Family

ID=9736499

Family Applications (1)

Application Number Title Priority Date Filing Date
GB226473A Expired GB1451343A (en) 1973-01-16 1973-01-16 Scrap preparation

Country Status (1)

Country Link
GB (1) GB1451343A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1303731A4 (en) * 2000-06-28 2004-03-24 Michael D Cashin Freezer and plant gas system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1303731A4 (en) * 2000-06-28 2004-03-24 Michael D Cashin Freezer and plant gas system

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Legal Events

Date Code Title Description
414F Notice of opposition given (sect. 14/1949)
414B Case decided by the comptroller ** grants allowed (sect. 14/1949)
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee