Advanced Design And Easy Operation Ultrafine Grinding Mill For 2000
Ultrafine grinding mill can grind marble, calcite, gypsum, barite,
talc, pyrophyllite, kaolin, bentonite, illite, vermiculite,
sepiolite, potassium ore and other minerals. The fineness of
finished powder can reach 400 and 3000 mesh. This ultrafine
grinding mill is characterized by easy operation, higher output,
and longer working life of wear parts. Without the drying system,
it can grind all kinds of qualified non-metallic mineral powder
materials with moisture less than 8%.
Ultrafine grinding mill system contains the following parts: jaw
crusher, elevator, feeder, classifier, grinding mill, pulse-jet
collector, blower, motors and pipes. The whole ultrafine grinding
mill system can do crushing, grinding, classifying together, which
brings higher efficiency and higher output.
Under the negative pressure, the ultrafine grinding mill runs well
without powder out of the whole system.
The ultrafine grinding mill is a combination of grinding, impacting
and crushing for grinding ultrafine powder. This ultrafine grinding
mill has the following features: better fineness, higher output,
lower energy consumption, and lower investment. The powder from
ultrafine grinding mill has good fineness (D97=3-35um), which can
be adjusted according to customer’s requirement to improve the
The ultrafine grinding mill has perfect structure combing grinding
and classifying to one. The ultrafine grinding mill runs under
negative pressure so that the powder can’t go outside. It is easy
and convenient to install and do maintenance. And this ultrafine
grinding mill also need a small area to install.
How to Adjust Ultrafine Grinding Mill:
1. Increase the feeding rate, the belt conveyor motor and mill
motor current will also increase; and the blower motor current will
decrease. If the feeding rate is much higher, raw material will
accumulate in the mill; the powder size will not be the same; the
mill motor current and classifier motor will be also higher. Lower
feeding rate will cause the lower production capacity. How to judge
the suitable feeding rate for the mill?
there are two situations:
If the air force is enough (if possible, surplus air), the mill
should be adjusted according the mill motor rated current(max). at
the rated current, the production capacity can be highest.
B. if the air force is not enough, the mill should be adjusted
according to the mill state in which there appears block in the
mill, that is, when the feeding current increases continuously, the
mill motor current will increase gradually; the fan motor current
will decrease gradually and then the fan current will not decrease
and change, which means the blower block point. If the feeding rate
continues to increase, the blower motor current will decrease
obviously. At this blower block point, there will be a mill motor
current, which means the highest production capacity for the mill.
(2) Extra air pipe valve adjustment: when the valve is open too
much(more extra air is discharged), part of the air volume will be
wasted; when the valve is open too little(too less extra air is
discharged), some extra air will be discharged from the feeding
inlet, which will bring some powder out and pollute the workshop.
The right way to adjust this valve: make sure there is no air
discharged from the feeding inlet and just little air is sucked
into the mill.
(3) Classifier adjustment:
With the same feeding rate and air volume, the higher rotation
speed of the classifier, the lower the production capacity; the
lower rotation speed of the classifier, the higher the production
(4)Record all the related technical data and production capacity.
After the mill works well, take some powder from the discharging
valve and check the fineness. When the powder is coarser, please
increase the classifier rotation speed or reduce the air volume.
When the powder is much finer, please reduce the classifier
rotation speed or increase the air volume. At the same time, please
adjust the feeding rate according to the mill working condition to
ensure the qualified powder fineness.
Please record the production capacity with the related fineness to
ensure highest working efficiency of the mill.
Special Features of Micro Powder Grinding Mill:
1.Perfect contact between rollers and ring: The arc or curved
surface increases their effective working surface and improves the
crushing efficiency. The rollers and rings contact surface and
shapes should be consistent and tightly fit, which is good to the
production of fine powder.
2. Improved hardness of rollers and rings: this not only guarantees
longer working life, but also the powder is not easy to be
3. Rotation speed of central shaft can be adjusted according to
4. Pulse-jet Collector: 99.99% of the ultrafine powder can be
collected, which is also environment-friendly.
5. Constant temperature control system is adopted and the whole
design is also improved, so various additives can be put into the
mill to improved the application range of powder.
6. High quality casting technology to prolonger the working life of
roller and ring.
Technical Data of Micro Powder Grinding Mill:
|Mesh||21 Rollers||27 Roller|