These mills have a high speed vertical axis rotor on shich many vertical pins or hammers of suitable shape are fixed.
The grinding action is provided by impact against smooth or toothed lining and by friction between layers of the processed material.
The product is pneumatically discharged upwards, through an air classifier. The special desing with coaxial shafts of rotor and classifier mounted on suitable bearings provid a compact construction and an easy installation.
The dynamic microclassifier, with special shape and deflector, is suitable to obtain powders at a fineness up to 99% finer than 30 micron, with average diameter d50 adjustable in the range 2÷20 micron with granulometry distribution in a narrow range.
The adjustment of the fineness it is made by the variation of the speed of the classifier, the capacity of the suction blower and the speed on the rotor.
The oversize not passing through the micro-classifier falls down onto the pin disc where it is further pulverized.
The high flow of air (or other gaz) and the mill design reduce the heat transfer to the product, compared with other type of mills.
These mills can be fed with dry materials up to 8 mm and are suitable for contemporary grinding and drying of raw materials with moisture up to 10÷12% (chemical products, vegetables). In case of heat sensitive or flammable raw materials (cocoa, vegetables), it is possible to blow cold air or inert gax through the mill (nitrogen)
CONTRUCTION FEATURES •screw feeder or rotary valve feeder. For certain applications the raw material is fed pneumatically to the mill •pins/hammers made in special heat treated steel •smooth or toothed lining •coaxial shafts made in Cr.Ni. steel rotating on suitable bearings with forced oil lubrication, air purge system of dust tight labyrinth •the machine can be supplied in mild or stainless steel and with special wear resistant protection •fast opening of grinding chamber with an hydraulic system allow easy cleanability and spare parts changing
Diameter of the mill rotormm5007501000
Required power for millkW30÷4555÷7590÷110
Required power for classifierkW4÷7,57,5÷1115
Leider gibt es für diesen Aussteller kein deutsches Firmenprofil.
Cimma Ing. Morandotti SpA is operating since 1947 in the design and construction of machines and plants for processing of powders and bulk materials. The company has its offices and factory with 5000 sheltered sqm in Pavia.
Cimma Ing. Morandotti SpA manufactures a wide range of grinding mills and pulverizers designed by its own technical department.
The Engineering Service of Cimma provides the design of complete plants and the evolution of machines for new applications and new technologies. One test and research room with laboratory is available at Cimma´s factory, where new applications and technologies are tested and developed, including the criogenic grinding of heat sensitive materials.
The main application markets of Cimma´s machinery are:
Ceramic Industry for dry preparation of raw materials
the Processing of building materials (classified sand, lime, plaster, dry mortars)
Chemical Industry preparation of solid fuels (petroleum coke, coal, sawdust, grog)
Feed / food industry (spices, licorice, micronizing of cereals)
Recycling of industrial and civil waste.
The reliability of machines supplied by Cimma, the expert engineering service, the efficient technical assistance with spare parts stock have been appreciated along the time by outstanding clients and allow relevant export sales to many countries, directly and through important main contractors.
High focus is constantly given to ambient protection and safety of Cimma´s products.