Solid material comminution or disintegration – Processes – With application of fluid or lubricant material
Patent
1979-01-24
1981-06-23
Lazarus, Richard B.
Solid material comminution or disintegration
Processes
With application of fluid or lubricant material
241 28, 241281, 241DIG14, B02C 2324
Patent
active
042746000
ABSTRACT:
A method of grinding wood under pressurized conditions 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 grinding chamber respectively. The groundwood stock is discharged 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 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.
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.
Lazarus Richard B.
Oy. Tampella AB
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