FR2106752A6 - Crushing process - using multistage cryogenic cooling - Google Patents

Crushing process - using multistage cryogenic cooling

Info

Publication number
FR2106752A6
FR2106752A6 FR7034436A FR7034436A FR2106752A6 FR 2106752 A6 FR2106752 A6 FR 2106752A6 FR 7034436 A FR7034436 A FR 7034436A FR 7034436 A FR7034436 A FR 7034436A FR 2106752 A6 FR2106752 A6 FR 2106752A6
Authority
FR
France
Prior art keywords
crushing
liquid
crushing process
cryogenic cooling
stage
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
FR7034436A
Other languages
French (fr)
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.)
Air Liquide SA
Original Assignee
Air Liquide SA
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 FR7018788A external-priority patent/FR2087551A5/en
Application filed by Air Liquide SA filed Critical Air Liquide SA
Priority to FR7034436A priority Critical patent/FR2106752A6/en
Priority to AU33674/71A priority patent/AU454830B2/en
Priority to ES395231A priority patent/ES395231A1/en
Priority to DE19717135763 priority patent/DE7135763U/en
Priority to BE772918A priority patent/BE772918A/en
Application granted granted Critical
Publication of FR2106752A6 publication Critical patent/FR2106752A6/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2/00—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic
    • 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Separation By Low-Temperature Treatments (AREA)
  • Disintegrating Or Milling (AREA)

Abstract

Materials which are fragile at cryogenic temps, esp. rubber etc. are first cooled by vapor of inert cryogenic liquid then further cooled by liquid to a temp. at which material is friable, followed by crushing in presence of liquefied gas. Vapour used in first stage is that generated from liquid in second stage and crusher. Efficient use is made of vapour formed and crushing zone is maintained at low temp, aiding crushing.
FR7034436A 1970-05-22 1970-09-23 Crushing process - using multistage cryogenic cooling Expired FR2106752A6 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
FR7034436A FR2106752A6 (en) 1970-05-22 1970-09-23 Crushing process - using multistage cryogenic cooling
AU33674/71A AU454830B2 (en) 1971-09-20 A method of i crushing a substance brittle at cryogenic temperatures
ES395231A ES395231A1 (en) 1970-09-23 1971-09-20 Procedure for the milling of a fragile substance to cryogenic temperatures. (Machine-translation by Google Translate, not legally binding)
DE19717135763 DE7135763U (en) 1970-09-23 1971-09-21 DEVICE FOR CRUSHING A FRAGILE SUBSTANCE AT LOWEST TEMPERATURES
BE772918A BE772918A (en) 1970-09-23 1971-09-22 PROCESS FOR GRINDING A FRAGILE SUBSTANCE AT CRYOGENIC TEMPERATURES

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR7018788A FR2087551A5 (en) 1970-05-22 1970-05-22 Grinding eg rubbers - cooling with vapour from liquefied gas
FR7034436A FR2106752A6 (en) 1970-05-22 1970-09-23 Crushing process - using multistage cryogenic cooling

Publications (1)

Publication Number Publication Date
FR2106752A6 true FR2106752A6 (en) 1972-05-05

Family

ID=26215754

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7034436A Expired FR2106752A6 (en) 1970-05-22 1970-09-23 Crushing process - using multistage cryogenic cooling

Country Status (1)

Country Link
FR (1) FR2106752A6 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2550961A1 (en) * 1983-08-26 1985-03-01 Air Liquide Low-temperature comminuting machine and method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2550961A1 (en) * 1983-08-26 1985-03-01 Air Liquide Low-temperature comminuting machine and method

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