Method of reducing the energy consumption at the refining of...

Details Method of reducing the energy consumption at the refining of... Method of reducing the energy consumption at the refining of...

D - Textiles, Paper

21

B

9/19

D21B 1/16 (2006.01) D21D 1/20 (2006.01)

Patent

CA 1281856

Abstract The invention relates to a method of reducing the energy consumption in the refining/beating of cellulose-containing material by the addition of alkali to the material for neutralizing acid groups bonded to the fibre wall. According to the invention, the pH-value in the pulp suspension is measured at the refiner outlet, the alkali is added in an amount depending on the measured pH value for neutral- ization without excess in the beating zone or immediately before the material enters the same, in an amount of 0.05-9 kg/ton, prererably 0.5-5 kg/ton, suitably 1-4 kg/ton, calculated as NaOH.

534937

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