GB715431A - Process and apparatus for the de-dusting and classification of granular materials - Google Patents

Process and apparatus for the de-dusting and classification of granular materials

Info

Publication number
GB715431A
GB715431A GB1939152A GB1939152A GB715431A GB 715431 A GB715431 A GB 715431A GB 1939152 A GB1939152 A GB 1939152A GB 1939152 A GB1939152 A GB 1939152A GB 715431 A GB715431 A GB 715431A
Authority
GB
United Kingdom
Prior art keywords
vessel
spreader
louvres
gas
pipe
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
GB1939152A
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.)
Ruhrchemie AG
Original Assignee
Ruhrchemie AG
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 DER6481A external-priority patent/DE893798C/en
Application filed by Ruhrchemie AG filed Critical Ruhrchemie AG
Publication of GB715431A publication Critical patent/GB715431A/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
    • B07B4/025—Separating solids from solids by subjecting their mixture to gas currents while the mixtures fall the material being slingered or fled out horizontally before falling, e.g. by dispersing elements
    • 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Drying Of Solid Materials (AREA)

Abstract

715,431. Pneumatic separating. RUHRCHEMIE AKT.-GES. July 31, 1952 [Aug. 4, 1951], No. 19391/52. Class 117 Granular material is freed from dust and like particles in a stream of air, inert gas &c. which may be dried and heated, flowing upwardly in a cylindrical vessel 16. The material is fed down pipe 18 on to a conical spreader 19, of appreciably smaller diameter than that of the vessel 16, and the gas is introduced through annular louvres 22 in an upwardly projecting extension of the feed pipe 20 which is closed by a conical cap 21. Further gas enters through louvres 25 in the side wall of the vessel 16 surrounded by an annular chamber 24 connected to pipe 20 through a branch 23. The gas and dust &c. pass out through pipe 26 and the cleaned material collects at the hopper-shaped bottom of the vessel 16 to be removed through opening 17. In another embodiment the louvres 25, chamber 24 and spreader 19 are omitted and the member 21 acts as the spreader, Fig. 2 (not shown). In a further arrangement, Fig. 1 (not shown), the only gas inlet is through annular louvres in the hoppershaped bottom of the vessel, the louvre surfaces being at an angle equal to or greater than the angle of repose of the material. The spreader is similar to spreader 19, and may be provided with spiral guide surfaces and rotated by a motor. In all the embodiments the diameter of the vessel may increase towards the top.
GB1939152A 1951-08-05 1952-07-31 Process and apparatus for the de-dusting and classification of granular materials Expired GB715431A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DER6481A DE893798C (en) 1951-08-05 1951-08-05 Method and device for dedusting and classifying granular substances, in particular mineral fertilizers

Publications (1)

Publication Number Publication Date
GB715431A true GB715431A (en) 1954-09-15

Family

ID=31196805

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1939152A Expired GB715431A (en) 1951-08-05 1952-07-31 Process and apparatus for the de-dusting and classification of granular materials

Country Status (1)

Country Link
GB (1) GB715431A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT201900000139A1 (en) * 2019-01-08 2020-07-08 Ima Spa DUST COLLECTION APPARATUS AND CLEANING METHOD OF DISCRETE ITEMS, AND PACKAGING MACHINE INCLUDING THIS APPARATUS.

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT201900000139A1 (en) * 2019-01-08 2020-07-08 Ima Spa DUST COLLECTION APPARATUS AND CLEANING METHOD OF DISCRETE ITEMS, AND PACKAGING MACHINE INCLUDING THIS APPARATUS.
WO2020144721A1 (en) * 2019-01-08 2020-07-16 I.M.A. Industria Macchine Automatiche S.P.A. De-dusting apparatus and method for cleaning discrete articles, and packaging machine comprising said apparatus

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