(19)
(11) EP 0 782 545 A1

(12)

(43) Date of publication:
09.07.1997 Bulletin 1997/28

(21) Application number: 95930550.0

(22) Date of filing: 18.09.1995
(51) International Patent Classification (IPC): 
C01B 17/ 74( . )
 C01F 11/ 18( . )
(86) International application number:
PCT/FI1995/000505
(87) International publication number:
WO 1996/009248 (28.03.1996 Gazette 1996/14)
(84) Designated Contracting States:
DE FR GB IT SE

(30) Priority: 22.09.1994 FI 19940004381

(71) Applicant: SUPER PAPER OY
57130 Savonlinna (FI)

(72) Inventor:
  • PUUMALAINEN, Pertti
    FIN-57130 Savonlinna (FI)

(74) Representative: Helke, Kimmo Kalervo 
Kespat Oy, P.O. Box 601
40101 Jyväskylä
40101 Jyväskylä (FI)

   


(54) A METHOD TO PREPARE CALCIUM CARBONATE