[go: up one dir, main page]

EP0245744A3 - Method and device for separating solid fine powders according to grain size - Google Patents

Method and device for separating solid fine powders according to grain size Download PDF

Info

Publication number
EP0245744A3
EP0245744A3 EP87106418A EP87106418A EP0245744A3 EP 0245744 A3 EP0245744 A3 EP 0245744A3 EP 87106418 A EP87106418 A EP 87106418A EP 87106418 A EP87106418 A EP 87106418A EP 0245744 A3 EP0245744 A3 EP 0245744A3
Authority
EP
European Patent Office
Prior art keywords
suspension
fine powder
grain size
separating solid
container
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Withdrawn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
EP87106418A
Other languages
German (de)
French (fr)
Other versions
EP0245744A2 (en
Inventor
Otto Volz
Enrique Mechau
Werner Lohfink
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.)
Alfred Hempel & Co KG GmbH
Original Assignee
Alfred Hempel & Co KG 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 Alfred Hempel & Co KG GmbH filed Critical Alfred Hempel & Co KG GmbH
Publication of EP0245744A2 publication Critical patent/EP0245744A2/en
Publication of EP0245744A3 publication Critical patent/EP0245744A3/en
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
    • B03D3/00—Differential sedimentation

Landscapes

  • Separation Of Solids By Using Liquids Or Pneumatic Power (AREA)

Abstract

Zum Trennen von Feststoff-Feinpulvern in Korngrößenfrak­ tionen wird das Feinpulver in einer Flüssigkeit suspen­ diert. Die Suspension wird in einem säulenförmigen Suspensionsbehälter(1) sedimentieren gelassen. Der Sus­ pensionsbehälter (1) hat in der Höhe gestaffelt von Schie­ bern (5,7) verschließbare Entnahmeöffnungen (4,6) für die jeweilige Suspensionsfraktion. Abhängig von der Art des zu klassierenden Feinpulvers wird nach einer jeweils vor­ her festgelegten Sedimentationszeit zunächst an der höch­ sten Entnahmeöffnung (4) eine Suspensionsfraktion entnom­ men, aus der dann das darin enthaltene Feinpulver gewon­ nen wird, dessen mittlere Korngröße erheblich kleiner ist als die des Ausgangspulvers. Anschließend wird nach Ab­ lauf einer weiteren, jeweils vorher festgelegten Sedimen­ tationszeit, über die in der Höhe weiter unten liegenden Auslässe nacheinander die entsprechenden Suspensionsfrak­ tionen entnommen und entsprechend gröbere Feinpulver gewonnen. For separating solid fine powders in particle size fractions the fine powder will be suspended in a liquid dated. The suspension is in a columnar shape Suspend the suspension container (1). The Sus Pension container (1) has staggered in height from Schie bern (5,7) closable removal openings (4,6) for the respective suspension fraction. Depending on the type of Fine powder to be classified is added after each sedimentation time specified at the highest most extraction opening (4) remove a suspension fraction from which the fine powder contained therein is then obtained NEN, whose average grain size is significantly smaller than that of the starting powder. Then after Ab run another sediment, each previously defined tation time, over those lower in height Outlets successively the corresponding suspension fracture removed and correspondingly coarser fine powder won.

EP87106418A 1986-05-14 1987-05-04 Method and device for separating solid fine powders according to grain size Withdrawn EP0245744A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19863616300 DE3616300A1 (en) 1986-05-14 1986-05-14 DEVICE FOR SEPARATING SOLID FINE POWDERS IN GRANE SIZE FRACTIONS
DE3616300 1986-05-14

Publications (2)

Publication Number Publication Date
EP0245744A2 EP0245744A2 (en) 1987-11-19
EP0245744A3 true EP0245744A3 (en) 1989-07-05

Family

ID=6300853

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87106418A Withdrawn EP0245744A3 (en) 1986-05-14 1987-05-04 Method and device for separating solid fine powders according to grain size

Country Status (2)

Country Link
EP (1) EP0245744A3 (en)
DE (1) DE3616300A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2645771B1 (en) * 1989-04-17 1991-06-14 Air Liquide METHOD FOR RESTRUCTURING AN ASSEMBLY OF FINE POWDERS

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3869903A (en) * 1972-07-19 1975-03-11 Permutit Co Settling rate tester
US4077874A (en) * 1975-06-19 1978-03-07 Conley Robert F Method removing radioactivity from kaolin
AT371375B (en) * 1980-01-04 1983-06-27 Ruthner Othmar METHOD AND DEVICE FOR PROCESSING MUELL

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3869903A (en) * 1972-07-19 1975-03-11 Permutit Co Settling rate tester
US4077874A (en) * 1975-06-19 1978-03-07 Conley Robert F Method removing radioactivity from kaolin
AT371375B (en) * 1980-01-04 1983-06-27 Ruthner Othmar METHOD AND DEVICE FOR PROCESSING MUELL

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN, Band 7, Nr. 232 (C-190)[1377], 14. Oktober 1983; & JP-A-58 124 505 (MITSUBISHI JUKOGYO K.K.) 25-07-1983 *

Also Published As

Publication number Publication date
DE3616300C2 (en) 1988-02-18
DE3616300A1 (en) 1987-11-19
EP0245744A2 (en) 1987-11-19

Similar Documents

Publication Publication Date Title
DE69009920T2 (en) Improvements to vibrating screening machines.
EP0245744A3 (en) Method and device for separating solid fine powders according to grain size
DE161995T1 (en) METHOD FOR TREATING FOUNDRY EMISSIONS TO RECOVER CHROMITE AND DEVICE THEREFOR.
EP0927579A3 (en) Method and device for removing solids from a solid-liquid mixture
EP0161613A3 (en) Method and apparatus for sampling bulk materials
EP0811428A3 (en) Device for separating composite materials suspended in a liquid
DE4027880C2 (en)
DE3203181A1 (en) DEVICE AND METHOD FOR CONTINUOUSLY CONTACTING A LIQUID PHASE WITH A SOLID PHASE IN COUNTERFLOW
EP1123747A3 (en) Powder coating installation
EP0247844A3 (en) An apparatus and a method for separating one solid component from another solid component in suspension in liquid
EP0247423A3 (en) Method and device for separating a heterogenous mixture of solid materials into fractions
EP0124880A3 (en) Method and apparatus for cleaning liquids
JP4092002B2 (en) Solid-liquid separator for waste
DE260957C (en)
EP0663455A1 (en) Filter unit and device for desludging salt baths
DE8711639U1 (en) Device for core removal from castings
DE1079595B (en) Device for thickening suspensions using a moving filter surface
DE1807137A1 (en) Method and device for extracting certain constituents from ores
DE929225C (en) Process and system for sifting powders
EP0388826A2 (en) Impact element for an impact mill rotor
DE3221570A1 (en) Double filtration system
DE897074C (en) Method for the treatment of clay suspensions
DE509481C (en) Formation of revolving drums with perforated drum wall, in which bulk goods are treated with the help of an air jet directed into the drum and carrying abrasive grains
DE584176C (en) Hot air wax melter
DE2651235A1 (en) Sepn. of non-ferrous metals from mixts. - by use of chemical, optical, and/or electrical sensors after classification into uniform size or shape for effective identification

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): DE FR GB IT

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): DE FR GB IT

17P Request for examination filed

Effective date: 19890926

17Q First examination report despatched

Effective date: 19901015

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19911026

RIN1 Information on inventor provided before grant (corrected)

Inventor name: MECHAU, ENRIQUE

Inventor name: VOLZ, OTTO

Inventor name: LOHFINK, WERNER