(19)
(11) EP 0 445 085 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
07.10.1992 Bulletin 1992/41

(43) Date of publication A2:
04.09.1991 Bulletin 1991/36

(21) Application number: 91830061.7

(22) Date of filing: 20.02.1991
(51) International Patent Classification (IPC)5: B28D 1/02, B24B 57/00, B24C 7/00, B24C 9/00
(84) Designated Contracting States:
DE ES FR

(30) Priority: 28.02.1990 IT 932690

(71) Applicant: GIORGINI MAGGI S.r.l.
Pietrasanta (Lucca) (IT)

(72) Inventor:
  • Dinelli, Giorgio
    Seravezza (Lucca) (IT)

(74) Representative: Bardini, Marco Luigi et al
Società Italiana Brevetti S.p.A. 25 Corso dei Tintori
50122 Firenze FI
50122 Firenze FI (IT)


(56) References cited: : 
   
       


    (54) Procedure for the washing and composition control of abrasive pulps used in the cutting of granite and similar stones and relative apparatus


    (57) The washing and composition control of an abrasive pulp, used in granite cutting and containing metallic grit with granulometry larger or finer than a predetermined value as well as granite dust, is conducted by means of a separation of said fractions in a tubular water-containing settler (4). A predetermined volume of pulp is weighed and then discharged into the settler (4). The collected grit of larger granulometry is weighed tracing back to its concentration in the pulp. The fine metallic grit can in turn be collected and weighed, and thereby recycled or disposed of along with the dust suspension and fine grit. A processor (23) provides for the numerical calculations and control of the processing procedure and of the restoration of fresh metallic grit.






    Search report