On basis of many times’ experiments and improvement, absorbing the latest mechanical technology of Germany and Japan, we successfully designed the high pressure micro-powder grinder which can be compared with the Jet Mill. It is suitable to grind more than 500 kinds of materials with the Mohs scale of hardness below 6, such as Kaolin, limestone, calcite, marble, barites, gypsum, ferric oxide, aluminum hydroxide, pigment, clay, coal, activated carbon, feldspar, talc, carbon black, figuline etc. The fineness of the product ranges from 500 mesh(0.025mm)to 2500 mesh(0.005mm), some can even reach 3500 mesh(3.55micrometres).
Working Mechanism
The whole structure of this machine consists of main engine, size analyzer, pipeline, air blower cyclone collector and bag-type dust filter; it can be equipped with crusher, elevator, electromagnetic vibrating feeder, electric cabinet, etc, if required. Materials should be crushed into the desired size by crusher first and then delivered to the hopper by bucket elevator. The vibrating feeder will feed the material evenly and continuously into the grinding chamber for powder-processing. The shovel scoops up the materials to the space between grinding roller and grinding ring. The grinding roller rotates itself as well as around the vertical axis, and then presses the grinding ring closely due to centrifugal force to accomplish the grinding. Fine powders will be carried to cyclone collector by the blower after analyzing, and then piped out as the finished products. Rough materials will be recycled into the grinding chamber by the air for regrinding. The grinded material may contain some moisture, and the pipeline joints are not airtight, therefore the external air is sucked in, all these will disturb the air circulation balance which can be achieved through adjusting air pipe between the air blower and the main engine. In this way, the superfluous air current will be channeled into the bag-type dust filter which will collect powder carried by the air and discharge the superfluous air after being purified.
Characteristics
----A wide selection range of materials with the Mohs scale of hardness below 6;
----Higher degree of fineness by the high pressure spring.
----Low in energy consumption compared with Jet Mill
----Less investment with accelerated cost recovery
----Independent system
----Less pollution; dust extraction fully conforms to national standard.
----Good sealing effect of grinding rollers.