Method of and a grinder for discharging groundwood stock when gr

Details Method of and a grinder for discharging groundwood stock when gr Method of and a grinder for discharging groundwood stock when gr

1979-01-24

1981-06-02

Lazarus, Richard B.

Solid material comminution or disintegration

Processes

With application of fluid or lubricant material

241 28, 241281, 241DIG14, B02C 2324

Patent

active

042707030

ABSTRACT:
A method of discharging groundwood stock when grinding wood under pressurized conditions in a grinding chamber, according to which the groundwood is suspended into stock and collected in a tank provided with an outflow for groundwood stock to atmospheric pressure. The surface of the stock in said tank is maintained at such a level above said outflow, that the stock in said tank forms a pressure lock in the communication between the grinding chamber and said outflow. In this way the discharging of the groundwood stock out from said grinding chamber is carried out as a sluicing step, whereby a continuous pressure can be maintained in the grinding chamber in spite of discharging of groundwood stock.

REFERENCES:
patent: 1099557 (1914-06-01), Lorenz et al.
patent: 1713510 (1929-05-01), Briner
patent: 3808090 (1974-04-01), Logan et al.
patent: 3948449 (1976-04-01), Logan et al.

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