EP1276569B1 - Procede permettant de separer de la matiere a separer au moyen d'un separateur a air centrifuge - Google Patents

Procede permettant de separer de la matiere a separer au moyen d'un separateur a air centrifuge Download PDF

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Publication number
EP1276569B1
EP1276569B1 EP01925184A EP01925184A EP1276569B1 EP 1276569 B1 EP1276569 B1 EP 1276569B1 EP 01925184 A EP01925184 A EP 01925184A EP 01925184 A EP01925184 A EP 01925184A EP 1276569 B1 EP1276569 B1 EP 1276569B1
Authority
EP
European Patent Office
Prior art keywords
separated
rotor
air separator
pressure
separator
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 - Lifetime
Application number
EP01925184A
Other languages
German (de)
English (en)
Other versions
EP1276569A1 (fr
Inventor
Horst Thaler
Jürgen Roth
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.)
PMT-Jetmill GmbH
Original Assignee
PMT-Jetmill GmbH
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 PMT-Jetmill GmbH filed Critical PMT-Jetmill GmbH
Priority to AT01925184T priority Critical patent/ATE249893T1/de
Publication of EP1276569A1 publication Critical patent/EP1276569A1/fr
Application granted granted Critical
Publication of EP1276569B1 publication Critical patent/EP1276569B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
    • B07B7/00—Selective separation of solid materials carried by, or dispersed in, gas currents
    • B07B7/08—Selective separation of solid materials carried by, or dispersed in, gas currents using centrifugal force
    • B07B7/083—Selective separation of solid materials carried by, or dispersed in, gas currents using centrifugal force generated by rotating vanes, discs, drums, or brushes

Definitions

  • the invention relates to a method for sifting Viewing material with a centrifugal air classifier, in which prepare for viewing material and a centrifugal air classifier, and coarse and Fine material to be discharged separately.
  • Centrifugal force classifiers are for example in the AT 404 681 B and US-A-4,257,880.
  • a centrifugal wind sifter is on the perimeter one or a common inlet for the visual and sight gas is provided, wherein the housing at the bottom of an outlet for the Grobgut and at the front a central or decentralized Exhaust is provided for the fines.
  • Inside the case is mounted by a rotary drive driven sizing rotor.
  • centrifugal force air classifier in which the axis of rotation of the rotor in is arranged substantially horizontally.
  • Such centrifugal air classifiers are usually operated so that the Fine material discharge a correspondingly dimensioned suction fan connected. By the suction of the sight gas from the Air classifier usually arises inside the classifier more or less negative pressure.
  • d T97 3.6 microns less than 1/10 of the fines were achieved than with a boundary grain d T97 of 6 microns.
  • the invention now aims to further reduce the marginal grain size at otherwise the same operating conditions and in particular without changing the rotor speed.
  • the inventive method the feature combination of claim 1.
  • the maximum achievable fineness could be significantly reduced at the same classifier speed, the same amount of gas and the same task material only by increasing the pressure above the atmospheric pressure , and for example for calcium carbonate d T97 could be reduced to 2 ⁇ m and below.
  • the separation grain size can be lowered, wherein in the context of the method according to the invention
  • the procedure is such that the classifying gas and the Goods to be viewed via a blower or a compressor or a compressor, in particular, a positive displacement blower are introduced.
  • a positive displacement blower can advantageously a side channel blower, Compressor or simply a high performance fan be used.
  • the method according to the invention is therefore carried out in such a way that that the overpressure relative to the atmospheric pressure greater than the determined pressure loss over the axial length of the rotor, being ensured in this way is that the desired pressure over the entire axial length of the rotor is available.
  • the procedure is such that the Operating pressure of the centrifugal air classifier at least in the area the sifter rotor is selected between 1.2 and 5 bar, in particularly advantageous as a visual gas air, steam and / or Industrial gases such as e.g. Combustion gases are used.

Landscapes

  • Combined Means For Separation Of Solids (AREA)
  • Centrifugal Separators (AREA)

Claims (5)

  1. Procédé pour séparer une matière à séparer au moyen d'un séparateur centrifuge à air, dans lequel la matière à séparer et le gaz de séparation sont introduits dans le séparateur à air, et la matière grossière et la matière fine sont extraites séparément, et dans lequel le gaz de séparation est introduit dans le séparateur centrifuge à air le cas échéant avec la matière à séparer, sous une pression supérieure à la pression atmosphérique, le séparateur à air étant maintenu à une pression supérieure à la pression atmosphérique au moins dans la zone du rotor du séparateur, caractérisé en ce que la surpression par rapport à la pression atmosphérique est choisie supérieure à la perte de charge déterminée sur la longueur axiale du rotor.
  2. Procédé selon la revendication 1, caractérisé en ce que le gaz de séparation et la matière à séparer sont introduits au moyen d'une soufflante ou d'un compresseur, en particulier une soufflante à piston rotatif.
  3. Procédé selon la revendication 1 ou 2, caractérisé en ce que la pression de service du séparateur centrifuge à air est choisie entre 1,2 et 5 bars au moins dans la zone du rotor du séparateur
  4. Procédé selon lune des revendications 1 à 3, caractérisé en ce qu'on utilise comme gaz de séparation, de lair, de la vapeur et/ou des gaz industriels, tels que par exemple des gaz de combustion.
  5. Procédé selon l'une des revendications 1 à 4, caractérisé en ce que la surpression de la soufflante est régulée en fonction de la grosseur limite déterminée des grains.
EP01925184A 2000-04-26 2001-04-26 Procede permettant de separer de la matiere a separer au moyen d'un separateur a air centrifuge Expired - Lifetime EP1276569B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT01925184T ATE249893T1 (de) 2000-04-26 2001-04-26 Verfahren zum sichten von sichtgut mit einem zentrifugal-windsichter

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
AT7302000 2000-04-26
AT0073000A AT408850B (de) 2000-04-26 2000-04-26 Verfahren zum sichten von sichtgut mit einem zentrifugal-windsichter
PCT/AT2001/000125 WO2001081016A1 (fr) 2000-04-26 2001-04-26 Procede permettant de separer de la matiere a separer au moyen d'un separateur a air centrifuge

Publications (2)

Publication Number Publication Date
EP1276569A1 EP1276569A1 (fr) 2003-01-22
EP1276569B1 true EP1276569B1 (fr) 2003-09-17

Family

ID=3680077

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01925184A Expired - Lifetime EP1276569B1 (fr) 2000-04-26 2001-04-26 Procede permettant de separer de la matiere a separer au moyen d'un separateur a air centrifuge

Country Status (7)

Country Link
US (1) US20030111393A1 (fr)
EP (1) EP1276569B1 (fr)
JP (1) JP2003531003A (fr)
AT (1) AT408850B (fr)
CA (1) CA2405990A1 (fr)
DE (1) DE50100659D1 (fr)
WO (1) WO2001081016A1 (fr)

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4936041B1 (fr) * 1966-06-18 1974-09-27
US4257880A (en) * 1979-06-28 1981-03-24 Jones Donald W Centrifugal air classifying apparatus
SE8401142D0 (sv) * 1984-03-01 1984-03-01 Alfa Laval Separation Ab Utloppsanordning for en centrifugalseparator
DE4014342C2 (de) * 1990-05-04 1994-06-23 Heinz Jaeger Windsichter
US5301812A (en) * 1993-04-02 1994-04-12 Ecc International Inc. Air classifying apparatus with wear reducing deflector
US5366095A (en) * 1993-11-15 1994-11-22 Christopher Martin Air classification system
US6036871A (en) * 1996-04-25 2000-03-14 Fan Separator Gmbh Method and device for separating heavier from lighter parts of aqueous slurries by means of centrifugal force effects
US6193075B1 (en) * 1996-09-30 2001-02-27 Colgate-Palmolive Company Air classification of animal by-products

Also Published As

Publication number Publication date
EP1276569A1 (fr) 2003-01-22
ATA7302000A (de) 2001-08-15
US20030111393A1 (en) 2003-06-19
AT408850B (de) 2002-03-25
DE50100659D1 (de) 2003-10-23
CA2405990A1 (fr) 2002-10-15
JP2003531003A (ja) 2003-10-21
WO2001081016A1 (fr) 2001-11-01

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