ES413641A1 - A procedure for crushing plastic and elastomeral materials. (Machine-translation by Google Translate, not legally binding) - Google Patents

A procedure for crushing plastic and elastomeral materials. (Machine-translation by Google Translate, not legally binding)

Info

Publication number
ES413641A1
ES413641A1 ES413641A ES413641A ES413641A1 ES 413641 A1 ES413641 A1 ES 413641A1 ES 413641 A ES413641 A ES 413641A ES 413641 A ES413641 A ES 413641A ES 413641 A1 ES413641 A1 ES 413641A1
Authority
ES
Spain
Prior art keywords
refrigerant
mill
impact mill
translation
legally binding
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
ES413641A
Other languages
Spanish (es)
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.)
Union Carbide Corp
Original Assignee
Union Carbide 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 Union Carbide Corp filed Critical Union Carbide Corp
Publication of ES413641A1 publication Critical patent/ES413641A1/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B13/00—Conditioning or physical treatment of the material to be shaped
    • B29B13/10—Conditioning or physical treatment of the material to be shaped by grinding, e.g. by triturating; by sieving; by filtering

Abstract

A process for shredding plastics and elastomers to a particle size such as to pass through the 297 micron mesh screen, which comprises the steps of: (1) cooling the material to be ground by countercurrent heat exchange with a cryogen refrigerant; (2) feeding the chilled material to a rotary impact mill through valvular means immediately upstream of said impact mill, substantially preventing said valvular means from passing refrigerant vapor and atmospheric air therethrough; (3) introducing a cryogenic refrigerant into said impact mill in sufficient quantities to keep said cooled material in a weakened state; (4) spraying said cooled material into said impact mill while continuously discharging particles of milled and vaporized cryogenic refrigerant from said mill through sieve means located in the discharge port of said mill; and (5) separating said particles of ground material from said vaporized refrigerant and collecting the separated particles. (Machine-translation by Google Translate, not legally binding)
ES413641A 1972-04-13 1973-04-12 A procedure for crushing plastic and elastomeral materials. (Machine-translation by Google Translate, not legally binding) Expired ES413641A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US24365972A 1972-04-13 1972-04-13

Publications (1)

Publication Number Publication Date
ES413641A1 true ES413641A1 (en) 1976-06-16

Family

ID=22919607

Family Applications (1)

Application Number Title Priority Date Filing Date
ES413641A Expired ES413641A1 (en) 1972-04-13 1973-04-12 A procedure for crushing plastic and elastomeral materials. (Machine-translation by Google Translate, not legally binding)

Country Status (5)

Country Link
BE (1) BE798161A (en)
BR (1) BR7302632D0 (en)
DE (1) DE2318549A1 (en)
ES (1) ES413641A1 (en)
FR (1) FR2180031A1 (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB8806915D0 (en) * 1988-03-23 1988-04-27 Blatchford & Sons Ltd Moulding compound & method of manufacturing compound
DE3833830A1 (en) * 1988-10-05 1990-04-12 Messer Griesheim Gmbh METHOD AND DEVICE FOR COLD GRINDING
DE4033599C3 (en) * 1990-10-23 1998-09-17 Ubd Patent Lizenzverwaltung Plant for shredding soft material, especially waste rubber
DE19533078A1 (en) * 1995-09-07 1997-03-13 Messer Griesheim Gmbh Method and device for grinding and classifying regrind
DE10059442A1 (en) 2000-11-30 2002-06-13 Messer Griesheim Gmbh Device and method for producing fine material from chemically active regrind
DE10115475A1 (en) * 2001-03-29 2002-10-10 Stettinger Heinz Low temperature size reduction of tires for recycling and recovery of cord materials, cools, size-reduces and grinds mixed tire and rubber feedstock
DE102021005338A1 (en) * 2021-10-27 2023-04-27 Messer Austria Gmbh Device for the production of cooled fresh concrete

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1607462B1 (en) * 1967-12-27 1970-12-03 Beike Dipl Ing Hans Process for the fine comminution of solid substances made by immersion in liquefied gas

Also Published As

Publication number Publication date
FR2180031A1 (en) 1973-11-23
FR2180031B1 (en) 1976-05-07
BR7302632D0 (en) 1974-07-18
DE2318549A1 (en) 1973-11-08
BE798161A (en) 1973-10-12

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