Pulp bleaching and alkaline extraction method

Details Pulp bleaching and alkaline extraction method Pulp bleaching and alkaline extraction method

D - Textiles, Paper

21

C

D21C 9/10 (2006.01) D21C 3/02 (2006.01) D21C 9/12 (2006.01) D21C 9/147 (2006.01) D21C 9/16 (2006.01)

Patent

CA 2737709

A method of treating lignocellulosic pulp in which an aqueous pulp mixture is treated with a bleaching agent and then subjected to an alkaline extraction at a reduced pH with a combination of alkaline agents comprising caustic soda and soda ash and using caustic soda for pH control.

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