Method of and a grinder for grinding wood under pressure

Details Method of and a grinder for grinding wood under pressure Method of and a grinder for grinding wood under pressure

D - Textiles, Paper

21

B

92/55

D21B 1/00 (2006.01) D21B 1/14 (2006.01) D21B 1/24 (2006.01)

Patent

CA 1097118

Abstract of the Disclosure A method of grinding wood under pressurized condit- ions in a grinder according to which wood is fed in batches into a pressurized gas-filled grinding chamber provided with a rotary grinding means. The wood batches are fed through a feeding chamber provided with means for sequentially opening and pressure-tightly closing said feeding chamber from two sides in and respectively out of communication with the atmosphere and said grind- ing chamber respectively. The groundwood stock is dis- charged from the grinding chamber through a pressure lock formed by the groundwood stock. In this way feeding of the wood batches into the grinding chamber and the and discharging of the groundwood stock out from said grinding chamber are carried out as sluicing steps, whereby a continuous pressure can be maintained in the grinding chamber in spite of feeding of new wood batches and discharging of groundwood stock.

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