| 摘要 |
<p>In the method for precipitating calcium carbonate in the cellulose-based fibre material, the calcium compound is first directed to the fibre material, after which carbon dioxide is directed to this fibre material and the material is mixed in order to precipitate the calcium carbonate in the fibres. The carbon dioxide is directed to the fibre material, which is in a consistency of 3 to 5%, after which the fibre material is supplied in this consistency area through a mixing zone (Z) and brought on the mixing zone in question under hydraulic cutting forces in a defibrator (C; C1, C2), wherein the blade distance on said zone (Z) is in the area of 0.5 to 1.5 mm.</p> |
