D - Textiles – Paper – 21 – C
Patent
D - Textiles, Paper
21
C
9/36.8
D21C 11/04 (2006.01) D21C 11/00 (2006.01)
Patent
CA 1244605
Abstract of the Disclosure A method for causticizing green liquor in an alkaline pulping process, advantageously in a sulphate process The causticizing method comprises a primary causticizing process and a secondary causticizing process. In the primary causticizing process lime is added to the green liquor thereby forming white liquor and lime sludge. In the secondary causticizing process a substantial quantity of raw lime or lime otherwise of quality superior to that employed for the primary causticizing is added to the pre-causticized liquor, possibly after separation of the lime sludge, whereby after separation of lime sludge a white liquor of high causticity is obtained.
466177
Dahlberg Kjell
Jansson Goran
Leiritie Markku
Sundstrom Christer
Andritz-Ahlstrom Oy
Gowling Lafleur Henderson Llp
Viles Joseph M.
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