EP0559747A1 - Moule permettant de comprimer des pellets - Google Patents

Moule permettant de comprimer des pellets

Info

Publication number
EP0559747A1
EP0559747A1 EP92900552A EP92900552A EP0559747A1 EP 0559747 A1 EP0559747 A1 EP 0559747A1 EP 92900552 A EP92900552 A EP 92900552A EP 92900552 A EP92900552 A EP 92900552A EP 0559747 A1 EP0559747 A1 EP 0559747A1
Authority
EP
European Patent Office
Prior art keywords
mould
holes
spraying
producing
cleaning
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Withdrawn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
EP92900552A
Other languages
German (de)
English (en)
Inventor
Huibert Konings
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.)
HARKO BV
Original Assignee
HARKO BV
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 HARKO BV filed Critical HARKO BV
Publication of EP0559747A1 publication Critical patent/EP0559747A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
    • B24C1/00—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods
    • B24C1/003—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods using material which dissolves or changes phase after the treatment, e.g. ice, CO2
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B11/00—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses
    • B30B11/20—Roller-and-ring machines, i.e. with roller disposed within a ring and co-operating with the inner surface of the ring
    • B30B11/201—Roller-and-ring machines, i.e. with roller disposed within a ring and co-operating with the inner surface of the ring for extruding material
    • B30B11/202—Ring constructions
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B32/00—Carbon; Compounds thereof
    • C01B32/50—Carbon dioxide
    • C01B32/55—Solidifying

Definitions

  • Mould to be used for compacting pellets.
  • the invention concerns an annular mould as used in so-called pelletisers where powder through radial holes in the annular mould is pressed by rollers. By breaking off the bars which are formed this way short pieces with the profile of the hole in the mould are formed.
  • the subject mould of the invention is a special means to compact carbon dioxide powder (solid CO 2 at a temperature below minus 56°) into tough bars with a triangle cross section. These bars are very suitable to be used for cleaning surfaces by spraying. It has been proved that the spraying material stays sharp even when some sublimation occurs by the spraying action.
  • the subject of the invention is a mould to produce small bars of heavy compressed carbon dioxide with a triangle cross section.
  • the mould has the form of a ring and is used in a machine where rollers on the inside of the ring press the powdered carbon dioxide into radial holes. These holes are narrowing and converge into a channel with a triangle cross section. The end of the channel carries means to break the bars.
  • Fig. 1 shows the mould and the rollers.
  • Fig. 2 shows a cross section of the mould at the position of the holes.
  • Fig. 3 shows the inside of the mould.
  • Fig. 4 shows the outside of the mould.
  • Fig. 5 shows the cross section of the space between two holes.
  • Fig. 6 shows the cross section of the partition between two triangular channels
  • Fig. 7 shows a pellet produced with the mould.
  • Fig. 8 shows an alternative pattern of hales.
  • Fig, 1 (1) is the annular mould and (2) the rollers which roll along the inside (3). Centerlines (4) indicate schematic the position of the holes (5).
  • Fig. 2 shows that the holes (5) have a converging part (6) that converts in a mainly triangle channel (7) with mainly parallel sides (8). At the end of the channel (7) is a widening outlet (9).
  • At (10) is indicated that two holes (5) are connected into one hole while the channels (7) are formed by a partition (11).
  • the partition (11) is chamfered (12) at the entry.
  • On the outlet the partition (11) can have a breaking edge (13) which breaks the bars of compressed carbon dioxide.
  • FIG. 5 is indicated how walls (14) between holes (5) and (10) are chamfered (15).
  • Fig. 7 is shown a spraying particle (19) produced with a annular mould (1) according to the invention.
  • Fig. 8 shows an alternative pattern of singular holes (5).

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Inorganic Chemistry (AREA)
  • Carbon And Carbon Compounds (AREA)
  • Glanulating (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Crushing And Grinding (AREA)

Abstract

Cette invention concerne un moule annulaire (1) utile pour produire des pellets se présentant sous forme de barres courtes ayant une section transversale triangulaire. Les pellets sont formés par la pression des cylindres (2) s'exerçant sur la partie intérieure (3) du moule (1), ladite pression forçant la neige carbonique réduite en poudre (dioxyde de carbone) à traverser les orifices radiaux. Lesdists orifices comprennent un orifice d'admission convergent, une rainure pourvue de côtés globalement parallèles et un orifice de sortie évasé. Ce système peut également comporter des séparations comprenant un dispositif permettant de couper la barre pour obtenir des pellets courts.
EP92900552A 1990-11-28 1991-11-28 Moule permettant de comprimer des pellets Withdrawn EP0559747A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL9002605 1990-11-28
NL9002605A NL9002605A (nl) 1990-11-28 1990-11-28 Matrijs voor het persen van pellets.

Publications (1)

Publication Number Publication Date
EP0559747A1 true EP0559747A1 (fr) 1993-09-15

Family

ID=19858049

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92900552A Withdrawn EP0559747A1 (fr) 1990-11-28 1991-11-28 Moule permettant de comprimer des pellets

Country Status (5)

Country Link
EP (1) EP0559747A1 (fr)
JP (1) JPH06502800A (fr)
AU (1) AU9048191A (fr)
NL (1) NL9002605A (fr)
WO (1) WO1992009525A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL9301237A (nl) * 1993-07-14 1995-02-01 Harko Bv Werkwijze voor het bewerken van oppervlakken met cryogene deeltjes.
NL194233C (nl) * 1994-08-17 2001-10-02 Huibert Konings Pelleteerinrichting, bestemd voor het persen van cryogene deeltjes.
NL1013692C2 (nl) * 1999-11-29 2001-05-30 Huibert Konings Werkwijze voor het vervaardigen van cryogene deeltjes uit vloeibaar koolzuur.
CN105584087A (zh) * 2015-12-23 2016-05-18 格薪源生物质燃料有限公司 立式环模生物质燃料压块成型机

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1388692A (fr) * 1963-02-15 1965-02-12 Richard Sizer Ltd Filière d'extrusion améliorée notamment pour matériaux moulables ou plastiques
FR2134874A5 (en) * 1971-04-23 1972-12-08 Novacel Sa Multi section extrusion die - for mfg irregular sodium sulphate crystals for seeding synthetic sponges
US3702519A (en) * 1971-07-12 1972-11-14 Chemotronics International Inc Method for the removal of unwanted portions of an article by spraying with high velocity dry ice particles
DE8803364U1 (de) * 1988-03-12 1988-05-05 Bloch, Klaus, 5205 St Augustin Strahlmittel aus thermoplastischem Kunststoff
FR2633706B1 (fr) * 1988-06-29 1992-02-14 Anhydride Carbonique Ind Produit a base de dioxyde de carbone solide, dispositif de conditionnement et procede de conditionnement du produit

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9209525A1 *

Also Published As

Publication number Publication date
NL9002605A (nl) 1992-06-16
AU9048191A (en) 1992-06-25
WO1992009525A1 (fr) 1992-06-11
JPH06502800A (ja) 1994-03-31

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