HGM series Three-ring & Medium-speed micro-powder mill is designed basing on our 20 years’ manufacturing experience, absorbing the Swedish advanced machine manufacturing techniques. It is a new type of mill for making super fine powder through more than 20 times of test and improvement. It is the latest type of products of micro-powder mills that leads the world tide. The lifetime of spare parts relies on the hardness of raw materials, and is lowered once the Moth’s hardness is up to 4-6 grades.

Application:
HGM series of Three-Ring & Medium-Speed Micro Powder Grinder is mainly used in processing non-inflammable, non-explosive, brittle material with hardness below six moths, such as calcite, chalk, limestone, dolomite, kaolin, bentonite, talc, mica, magnesite, pyrophillite, ceyssatite, barite, gypsum, alunite, granite, fluorite, phosphate rock, kalium ore, float stone, more than 200 kinds of materials.
Features:
1. Under the same condition of fineness of finished products and motor power, its capacity is larger than that of airflow mill and mixer mill by 40 percent.
2. Under the same condition of materials and fineness of finished products, the service life of its wearing parts is longer than that of impact pulverizer and turbine one. Generally, it can be more than one year.
3. In the grinding cavity, there is no rolling bearing and screw. So the following questions don’t exist: the bearing and its sealed parts are easy worn; the screw is easy to be loose to damage the machine.
4. The product fineness can be up to d97≤5µm without gradation.
Working Principle:
The motor drives the main shaft and every turnplate through the reducer. The reducer drives dozens of rollers to rotate against race way of ring through pin. Small materials crushed by hammer crusher are transported into hopper by elevator, and then vibrating feeder shall feed material to the central part of upper turnplate evenly. The material falls to circle under the centrifugal force and comes down to raceway of ring to be crushed into powder. After grinded in the first race way, the material goes to the second and third turnplate. The blower inhales the external air into the mill and carries the powder after third turnplate into powder-separator. Turbine in the separator makes the coarse powder drop down and regrind and the fine powder shall go into cyclone powder collector together with air current and go down through discharge valve as final product; at the same time, air current with a little dusts goes out through blower and muffler after purified by filter.
Technical Data :