HGM series micronizer is for super-fine grinding materials with
hardness less than 6 in Moh‘s scale and humidity less than 6
percent such as kaolin, limestone, basalt, calcite, marble, talcum,
barite, gypsum, dolomite, bentonite mud, mica, pyrophyllite,
sepiolite, carbon black, diatomite, graphite, alunite, fluorite,
potassium feldspar, phosphorite, pigment, up to 200 kinds. The
granularity (or final size) of the finished products can be freely
adjusted between 325-3000meshes (0.045-0.0057mm), and the capacity
(ton/hour) ranges from 0.4T/H to 12T/H depending on the final size
and the grinding materials.
Working principle of HGM series micronizer:
HGM series micronizer mainly consist of main unit, classifier,
powder collector, dust cleaner, blower, muffler, sound-proof room,
crusher, bucket elevator, storage hopper, and vibrating feeder.
After crushed by hammer crusher, the large materials become small
ones and are sent to storage hopper by elevator, and then evenly
sent to the upper distribution plate of the turnplate by vibrating
feeder and sloping feeding pipe.
When the micronizer is at work, all the grinding rollers are
rolling in the ring, and the materials are driven to the edge of
the turnplate by the centrifugal force and fall down into the
grinding chambers where the materials are repeatedly pressed,
crushed and grinded by the rollers.
The high-pressure air blower constantly inhales air within the
micronizer and, in turn, the airflow with crushed materials are
brought to the classifier whose high-speed impeller will screen the
airflow: the unqualified particle size will fall and return to the
mill for being reground while the qualified particle size mixed
with air will go into the cyclone powder collector. Most of the
qualified powders will fall and exit from the discharging valve at
the bottom; a small proportion of the fine powders, with airflow,
moves to the dust cleaner, and clings to the surface of the filter
bags. At the same time, the fine powders clinging to the surface
fall down by the sudden vibration of the filter bags, which is
caused by the instantly ejected high-pressure gas controlled by the
pulse valve. The materials from the above two lots are sent by the
conveyor at the bottom to get finished powders packed. In addition,
filtered clean air will be emitted from the air outlet of muffler
in the end.