| 摘要 |
<p>A method and an apparatus for increasing the recovery of drill mud from a mixture of solid drill cuttings and liquid drill mud in a recovery plant. The plant comprises a screw press (2) including a filter (6), and a reduced pressure is applied to the outer side of the filter (6); so that the mixture is subjected to an increased differential pressure over said filter (6) causing superfluous amounts of drilling mud to be forced out of the mixture. The apparatus comprises a screw press (2) having at least one input (3) and at least one output port (5, 17); which screw press (2) includes at least one helical feeding screw flight (4) arranged within a filter (6). The screw flight(s) (4) may be provided with at least one mechanical device (28, 30) adapted to disturb an even, helical movement of the transported mixture.</p> |
