FR990941A - Improvements to processes and devices for sifting materials - Google Patents

Improvements to processes and devices for sifting materials

Info

Publication number
FR990941A
FR990941A FR990941DA FR990941A FR 990941 A FR990941 A FR 990941A FR 990941D A FR990941D A FR 990941DA FR 990941 A FR990941 A FR 990941A
Authority
FR
France
Prior art keywords
processes
devices
sifting
materials
sifting materials
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
Other languages
French (fr)
Inventor
Gerrit Frederik Van Den Bergh
Hendrikus Pieter Wiegel
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 filed Critical
Application granted granted Critical
Publication of FR990941A publication Critical patent/FR990941A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04C—APPARATUS USING FREE VORTEX FLOW, e.g. CYCLONES
    • B04C3/00—Apparatus in which the axial direction of the vortex flow following a screw-thread type line remains unchanged ; Devices in which one of the two discharge ducts returns centrally through the vortex chamber, a reverse-flow vortex being prevented by bulkheads in the central discharge duct
FR990941D 1948-07-20 1949-07-18 Improvements to processes and devices for sifting materials Expired FR990941A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL276940X 1948-07-20

Publications (1)

Publication Number Publication Date
FR990941A true FR990941A (en) 1951-09-27

Family

ID=19782156

Family Applications (1)

Application Number Title Priority Date Filing Date
FR990941D Expired FR990941A (en) 1948-07-20 1949-07-18 Improvements to processes and devices for sifting materials

Country Status (4)

Country Link
BE (1) BE489757A (en)
CH (1) CH276940A (en)
DE (1) DE821456C (en)
FR (1) FR990941A (en)

Also Published As

Publication number Publication date
DE821456C (en) 1951-11-19
CH276940A (en) 1951-08-15
BE489757A (en)

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