(19)
(11) EP 0 469 360 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
18.03.1992 Bulletin 1992/12

(43) Date of publication A2:
05.02.1992 Bulletin 1992/06

(21) Application number: 91111589.7

(22) Date of filing: 12.07.1991
(51) International Patent Classification (IPC)5: B03B 5/28, B03B 5/62
(84) Designated Contracting States:
AT BE CH DE DK ES FR GB GR LI LU NL SE

(30) Priority: 02.08.1990 IT 1250190

(71) Applicant: OFFICINE MECCANICHE FERRERO S.p.A.
I-17047 Vado Ligure (Sv) (IT)

(72) Inventor:
  • Ferrero, Francesco
    I-17047 Vado Ligure (SV) (IT)

(74) Representative: Ferrarotti, Giovanni 
Studio Consulenza Tecnica Dr. Ing. Giovanni Ferrarotti Via Alla Porta Degli Archi 1/7
I-16121 Genova
I-16121 Genova (IT)


(56) References cited: : 
   
       


    (54) Method and apparatus for the wet separation of heterogeneous mixtures containing solids having different densities


    (57) This separator is consisting of two concentric, cylinder shaped chambers or tanks, one for discrimination (1) and the other for dispersion, with open truncated cone-shaped bottom, both lodged in a settling basin (21). The dispersion tank (2) is filled from above with the mixture to be discriminated, whereas the discrimination tank (1) is provided at the top with an overflow (4) with channel (5) for drainage of the light fractions and with an outlet opening (7) at its lower end through which the heavier fractions are discharged. A a spiral chamber (8) fitted with guide blades (9) is located near the lower outlet (7) of the discrimination tank (1) and a chinese hat shaped impeller (13) fitted with blading at its upper and lower end generate flows having a prefixed velocity and direction so as to facilitate separation of the mixture to be discriminated.






    Search report