Please describe the principle of drum pulper.
A: There are axial partitions in drum to bring pulp up, and then let them drop
B: There is a stir in drum
C: produce strong shear and rub of fibers
D: produce mild shear and rub of fiber
A: There are axial partitions in drum to bring pulp up, and then let them drop
B: There is a stir in drum
C: produce strong shear and rub of fibers
D: produce mild shear and rub of fiber
举一反三
- What is the role of D-type discharger in drum? A: increase the rub of fiber in narrow channel B: increase shear of fiber in the narrow channel C: increase the impulsive force when fibers drop
- What is the advantage of drum pulper? A: efficiently scattered fibers B: dregs is also broken C: no break of dregs D: dregs are removed
- What is the role of Plate screen after drum pulper? A: remove fine dregs B: further defibering C: remove coarse dregs D: concentrating
- Drum brake is comprised of two brake shoes, a wheel cylinder, an adjuster, an emergency brake mechanism, a back plate, a lot of return springs, and a brake drum as shown in Fig.5-7．
- The steel drum was invented in Trinidad and Tobago in the 1 , and today it’s popular all over the world. It’s hard to believe, but this drum, with its sweet sound, is made from an 2 . On Trinidad and Tobago, you can hear steel drum music on the 3 , in the marketplaces, and especially during the islands’ 4 .