GB1211106A - Improvements in method and apparatus for classifying finely-divided solids carried in a gas stream - Google Patents

Improvements in method and apparatus for classifying finely-divided solids carried in a gas stream

Info

Publication number
GB1211106A
GB1211106A GB06186/68A GB1618668A GB1211106A GB 1211106 A GB1211106 A GB 1211106A GB 06186/68 A GB06186/68 A GB 06186/68A GB 1618668 A GB1618668 A GB 1618668A GB 1211106 A GB1211106 A GB 1211106A
Authority
GB
United Kingdom
Prior art keywords
particles
chamber
duct
stream
air
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
GB06186/68A
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.)
Kennedy Van Saun Corp
Original Assignee
Kennedy Van Saun Corp
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 Kennedy Van Saun Corp filed Critical Kennedy Van Saun Corp
Publication of GB1211106A publication Critical patent/GB1211106A/en
Expired 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
    • B07B4/00—Separating solids from solids by subjecting their mixture to gas currents
    • B07B4/02—Separating solids from solids by subjecting their mixture to gas currents while the mixtures fall
    • B07B4/04—Separating solids from solids by subjecting their mixture to gas currents while the mixtures fall in cascades
    • 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
    • B07B7/01—Selective separation of solid materials carried by, or dispersed in, gas currents using gravity

Landscapes

  • Cyclones (AREA)
  • Combined Means For Separation Of Solids (AREA)

Abstract

1,211,106. Pneumatic separation of solids. KENNEDY VAN SAUN CORP. 4 April, 1968 [18 April, 1967], No. 16186/68. Heading B2H. Finely-divided solid particles carried in a stream of gaseous carrier medium are classified according to size by conducting a main stream of gaseous medium and particles in continuous flow into one side of an expansion chamber 26 of a classifier, causing the stream of particles to flow downwardly and inwardly towards an outlet 20 for relatively coarse particles, passing a number of separate streams of stripping gaseous medium transversely through the downwardly flowing stream of solid particles to remove relatively fine particles therefrom and suspend them in the chamber 26 and removing the suspended fine particles from the top of the chamber in a stream of the gaseous medium. As shown, particles and air are fed via a duct 42 and an inlet 18 into a preliminary separation chamber 24 from which part of the air and fine particles are drawn off through a duct 44 provided with a pivotable control gate 46 to a fine particle outlet duct 22 which may be connected to a fan through cyclone separators. The bulk of the air and particles flow through the chamber 24 into the expansion chamber 26 via a passageway 48 which is controlled by a pivotable gate 62. Secondary air with some fine particles is drawn off from the chamber 24 through ducts 56, 58, 60 controlled by pivotable gates 50, 52, 54 and is discharged through successively lower outlets 61, 59, 57 transversely through the stream of particles flowing downwardly from the passageway 48, thereby to separate the fine particles which are removed with the air through the outlet duct 22 while the coarse particles continue downward and are removed through the outlet 20. The effective volume of the expansion chamber 26 is adjustable by means of a swinging gate 30 fixed to a pivoted shaft 32 operable by a lever on the outside of the classifier by means of a hydraulic piston and cylinder unit. The gate 30 has a rigid section 34 and a swingable section 36 positioned by chains 38. When the gate 30 is moved to the right, the effective size of the chamber 26 is decreased and hence the velocity of the air and the size of the solid particles moving upwardly through the duct 22 are increased. The size of the solid particles through the duct 22 may also be increased by closing off the duct 44.
GB06186/68A 1967-04-18 1968-04-04 Improvements in method and apparatus for classifying finely-divided solids carried in a gas stream Expired GB1211106A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US63183367A 1967-04-18 1967-04-18

Publications (1)

Publication Number Publication Date
GB1211106A true GB1211106A (en) 1970-11-04

Family

ID=24532952

Family Applications (1)

Application Number Title Priority Date Filing Date
GB06186/68A Expired GB1211106A (en) 1967-04-18 1968-04-04 Improvements in method and apparatus for classifying finely-divided solids carried in a gas stream

Country Status (3)

Country Link
US (1) US3426893A (en)
BE (1) BE713730A (en)
GB (1) GB1211106A (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3972808A (en) * 1974-03-25 1976-08-03 Manley Bros. Of Indiana, Inc. Pneumatic classifier with particle removal system
US5348163A (en) * 1993-01-19 1994-09-20 Cabot Corporation Method and apparatus for separating fine particles
US5366093A (en) * 1993-09-10 1994-11-22 Reynolds Metals Company Apparatus for separating particulate materials
US6889843B1 (en) * 2000-10-03 2005-05-10 Polysius Corp. Apparatus and methods for controlling the separation of particulate material
DE10142162A1 (en) * 2001-08-29 2003-03-20 Kloeckner Humboldt Wedag Sifter for sifting granular material
DE102005045591A1 (en) * 2005-09-23 2007-03-29 Polysius Ag Raw material e.g. granular material, separating device for use in grinding plant, has static separator with aeration base through which gas flows, where base is arranged in vertical direction and has specific ratio of breadth to height

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2214434A (en) * 1938-04-21 1940-09-10 Joseph C Nelms Apparatus for cleaning loose materials
GB560450A (en) * 1942-03-18 1944-04-05 Hardinge Co Improvements in or relating to classifying system for pulverized materials
US2777576A (en) * 1954-03-05 1957-01-15 Stevenson Calvin Separating apparatus
US2850162A (en) * 1954-08-11 1958-09-02 Buehler Ag Geb Separators for pneumatically conveyed aggregate goods
US3240335A (en) * 1961-12-11 1966-03-15 Buell Engineering Company Inc Classifier with gas flow distributor

Also Published As

Publication number Publication date
BE713730A (en) 1968-09-16
US3426893A (en) 1969-02-11

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
435 Patent endorsed 'licences of right' on the date specified (sect. 35/1949)
PCNP Patent ceased through non-payment of renewal fee