Description
1.Introduction of spiral grader:
Spiral grader is widely used in the concentrator to shunt
mineral sand with the ball mill , forming dubbed closed circuit. In
the
gravity concentrator, it is used for grading sand and mud, and
in metal beneficiation process for the pulp particle
size
classification, and in ore washing operations for desliming,
dehydration and other operations. The machine has the advantages
of
simple structure, reliable work, convenient operation and
other characteristics.
2.Structure features:
Grader is mainly composed of a driving device, a spiral body,
tank, a lifting mechanism, a lower seat (Bush ) and discharging
valve. The base of the machine adopts a channel, the machine adopts
welded steel. The water inlet of spiral axle, axle is using cast
iron, wear-resistant durable and lifting device consists of two
kinds of electric and manual.
3.Working principle:
Spiral grader is utilizing the principle that different sizes,
different weight of solid grains , thus in the liquid the
different
settling velocity.Fine mineral particles floate in the water
and overflow ,while coarse particles, sink to the bottom, by the
screw
pushing discharged from the upper, which carry out the
mechanical grading. It can grade and filter the grinded
powder in the mill , and then the coarse material using on-chip
spiral vane is screwed into the mill feed inlet, fine material
filtered out discharged
from the overflow tube.
