IE34768B1 - Low temperature grinding - Google Patents

Low temperature grinding

Info

Publication number
IE34768B1
IE34768B1 IE152670A IE152670A IE34768B1 IE 34768 B1 IE34768 B1 IE 34768B1 IE 152670 A IE152670 A IE 152670A IE 152670 A IE152670 A IE 152670A IE 34768 B1 IE34768 B1 IE 34768B1
Authority
IE
Ireland
Prior art keywords
heat exchanger
grinder
ducting
expansion chamber
closed circuit
Prior art date
Application number
IE152670A
Other versions
IE34768L (en
Original Assignee
Inventa 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
Priority claimed from CH1788569A external-priority patent/CH491675A/en
Application filed by Inventa Ag filed Critical Inventa Ag
Publication of IE34768L publication Critical patent/IE34768L/en
Publication of IE34768B1 publication Critical patent/IE34768B1/en

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
    • 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
    • B29B13/02—Conditioning or physical treatment of the material to be shaped by heating
    • B29B13/021—Heat treatment of powders
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Food Science & Technology (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crushing And Grinding (AREA)
  • Crushing And Pulverization Processes (AREA)
  • Disintegrating Or Milling (AREA)

Abstract

1,267,019. Comminuting plastics. INVENTA A.G. FUR FORSCHUNG UND PATENTVERWERTUNG. 30 Nov., 1970 [1 Dec., 1969], No. 56804/70. Heading B2A. Apparatus for grinding materials and particularly plastics at low temperatures, comprises a grinder 12, a supply vessel 10 to supply material to the grinder, means including a pipe 32 to remove ground material from it and a closed circuit of ducting including a heat exchanger 2 for supply of a cold gas into the grinder and recirculation of the gas through the heat exchanger. Part of the ducting of a second closed circuit passes through the heat exchanger 2, ducting of the second closed circuit leading from the heat exchanger 2 to a second heat exchanger 3, from the second heat exchanger 3 to a compressor 4, from the compressor again to the second heat exchanger, from the second heat exchanger to an expansion chamber in the circuit and from the expansion chamber to the first heat exchanger. The expansion chamber is in the form of a turbine 1. [GB1267019A]
IE152670A 1969-12-01 1970-11-30 Low temperature grinding IE34768B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH1788569A CH491675A (en) 1969-12-01 1969-12-01 METHOD OF GRINDING GRAINY MATERIALS AT LOW TEMPERATURES

Publications (2)

Publication Number Publication Date
IE34768L IE34768L (en) 1971-06-01
IE34768B1 true IE34768B1 (en) 1975-08-06

Family

ID=4428828

Family Applications (1)

Application Number Title Priority Date Filing Date
IE152670A IE34768B1 (en) 1969-12-01 1970-11-30 Low temperature grinding

Country Status (8)

Country Link
AT (1) AT310435B (en)
BR (1) BR7024256D0 (en)
CA (1) CA931548A (en)
ES (1) ES386018A1 (en)
FR (1) FR2072651A5 (en)
GB (1) GB1267019A (en)
IE (1) IE34768B1 (en)
NL (1) NL146421B (en)

Also Published As

Publication number Publication date
NL7017482A (en) 1971-06-03
BR7024256D0 (en) 1973-03-08
FR2072651A5 (en) 1971-09-24
AT310435B (en) 1973-09-25
NL146421B (en) 1975-07-15
DE2058247A1 (en) 1971-06-16
ES386018A1 (en) 1973-03-16
GB1267019A (en) 1972-03-15
IE34768L (en) 1971-06-01
CA931548A (en) 1973-08-07

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