Method of processing digesting chemicals for cellulose...

Details Method of processing digesting chemicals for cellulose... Method of processing digesting chemicals for cellulose...

D - Textiles, Paper

21

C

9/36

D21C 11/04 (2006.01) C01F 11/02 (2006.01) D21C 11/00 (2006.01)

Patent

CA 1184006

ABSTRACT OF THE DISCLOSURE A method of processing digesting chemicals for cellulose production. In this method unslaked lime from the lime kiln is slaked and the slaked lime thereafter mixed with green liquor (sodium carbonate) and causticized into white liquor. For the purpose of allowing bleeding-off and separation of non-desirable elememts such as e.g. Si, Al, Mg, Mn, Fe, and P obtained in the processes the unslaked lime is slaked in accordance with the teachings of the invention in a separate process step in an aqueous solution, whereupon the milk of lime (Ca(OH2) thus formed is separated from the aqueous solution and the causticizing thereafter effected. Fig. 2

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