... , cement, chemical fertilizer, lime-ash, sand, pebble, coal powder etc. Spiral conveyer can’t convey easy metamorphous, high stickiness and easy ... .22.2~18.5≤20LS1251251254.0LS1601601608LS20020020011LS25025025022LS31531531534LS40040035564LS50050040095LS630630450150LS800800500210Screw conveyer operation and maintenance Spiral conveyer conveys powder, granules and small massive material as general ...