METHODS FOR PREPARING PULPWOOD FOR DIGESTION

摘要

Methods for processing wood chips (54) for digestion utilize a chip destruct uring apparatus. The method includes an initial disc screen (42) for removing the gross overthick and oversized chips which are d iscarded or are processed through a rechipper (48). Afte r the initial disc screen, the entire stream of chips is processed to eliminate tr amp metal. The entire chip stream is screened (60) to re move fines. The stream of chips is fed to the chip destructuring apparatus from a surge bin (50) with a star feeder (52). The star feeder is a m etering device and is operated by a controller (58) which monitors the level of chip s in the surge bin. The controller uses the star feeder to feed a steady supply of chips to the chip destructuring apparatus which allows the destructuring apparatus to be configured for a maximum f eed rate.