Abstract
The invention relates to a procedure for adding a filler into a pulp based on cellulose fibres, in which the pulp is fluidized and the filler is added into it. Preferably the pulp is stirred in the fluidized state while the filler is being added. The pulp is preferably at a medium consistency when the filler is being added. Preferably the filler added into the pulp is calcium hydroxide and the calcium carbonate is precipitated with carbon dioxide.
| Original language | English |
|---|---|
| Patent number | EP0791685 |
| IPC | D21H 17/ 70 A N |
| Priority date | 20/02/1996 |
| Publication status | Published - 27 Aug 1997 |
| MoE publication type | H1 Granted patent |