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Exhibitors & Products POWTECH 2019

CIMMA ING. MORANDOTTI & C. - COSTRUZIONE IMPIANTI E MACCHINE

Via Quaglino 14/16

27100 Pavia (PV)

Italy

Phone: +39.0382.422012

Fax: +39.0382.526951

www.cimma.it

Request contact / appointment

Hall 4 / 4-315

Products of CIMMA ING. MORANDOTTI & C. - COSTRUZIONE IMPIANTI E MACCHINE (5)

LOGO_AIR SWEPT MILL model “PPS” with air classifier

LOGO_HAMMER MILL type “ROTODUE 4C” with dynamic classifier

LOGO_Pin Mill Type “CONTRAROTOR” for Cryogenic Grinding

Exhibitor Profile

Products (5)

Floor Plan

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
Mining Industry
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.

AIR SWEPT MILL model “PPS” with air classifier

The mills type PPS are designed for the fine or finest grinding of many materials of medium hardness and abrasiveness, such as:

•powder coatings
•chemicals
•vegetable products, dried vegetables, coca, soia, etc
•pesticides

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

TECHNICAL FEATURES

TypePPS-500PPS-750PPS-1000
Diameter of the mill rotormm5007501000
Required power for millkW30÷4555÷7590÷110
Required power for classifierkW4÷7,57,5÷1115
Hourly capacitykg100÷1200200÷2000400÷3000
Mill’s speedrpm500÷3000500÷3000400÷2500
Necessary filterm220÷6040÷100100÷180

AIR SWEPT MILL model “SV MICRO”

The mills type SV are designed for the fine or finest grinding of many materials of medium hardness and abrasiveness, such as:

•Minerals (calcium carbonate, gypsum, limestone, anitmonium sulphate, etc.)
•Chemical products (calcium idroxide, calcium oxide, alluminium idroxide, petroleum coke, etc.)
•vegetable products (coals, dried vegetables, cocoa, etc.)
•micronizing of cereals

These mills have a high speed vertical axis rotor on which some rigid hammers of suitable shape are fixed.
The grinding action is provided by impact against a toothed lining and by friction between layers of the processed material.
The product is pneumatically discharged upwards, through an air classifier. The dynamic classifier is designed according to the grinding requirement and is fitted onto the top of the mill.

The cage-type dynamic microclassifier fitted onto the mill, is suitable to obtain powders at a fineness up to 99% finer than 20 micron, with a high percentage of particles finer than 5 micron.

The oversize not passing through the micro-classifier falls down to the mill where it is further gound. The drive of the microseparator is independent and usually is made with a variable speed motor. This allows a very fine adjustment of the working speed of the microseparator directly from the control board. As a consequence, the fineness of the product can be easily adjusted in a wide range.

The mills type SV must be fed with dry materials with size up to 12 mm.

In simpler cases the SV mill could be fitted with a static air classifier of special design, suitable to obtain powders at a fineness up to 95÷98% through the 40 micron sieve.

The fineness is adjustable within certain limits by varying the arrangement of the static air classifier and/or the air flow through the mill

The SV-MICRO mills are suitable for contemporary grinding and drying of raw materials with moisture up to 10-12% by blowing hot gases through the mill (calcium carbonate, vegetables, limestone).

In case of heat sensitive materials or flammable, it’s possible to blow cold air or inert gas through the mill (coals, vegetables, cocoa)

In case of very abrasive raw materials it is possible to supply special wear protection, alumina lining, etc.

CONTRUCTION FEATURES
•Screw feeder or rotary valve feeder.
•Hammers of special heat treated steel
•Toothed lining plates of wear resistant alloy
•Shafts of Cr.Ni. steel supported by roller bearings enclosed in a dust tight, grease sealed box
•It is possible to supply stainless steel machine
•For any special problem, please contact our technical department

TECHNICAL FEATURES

TYPESV 3 MICROSV 4 MICROSV 5 MICRO
Diameter of the mill rotormm80010001300
Required power for millkW22÷3730÷5575÷90
Required power for
microclassifierkW4÷7,57,5÷1115
Required power forsuction fankW7,5÷2211÷3022÷37
Hourly capacitykg100÷1200200÷2000400÷3000
Mill’s speedrpm1400÷22001500÷20001000÷1800
Microclassifier’s speedrpm500÷3000500÷3000400÷2500
Necessary filterm220÷6040÷100100÷180

HAMMER MILL type “ROTODUE 4C” with dynamic classifier

TYPICAL APPLICATIONS

The mill Rotodue 4C is suitable to produce air classified powders with granulometry in the range 0 to 100÷300 micron, with d50= in the range 10÷40 micron.
Product fineness is easily adjustable by varying the speed of the dynamic air classifier.

The discharge of the product is pneumatic in air stream and therefore the mill is specially suitable for the operation with hot gases.

This allows a partial drying of moist materials during the grinding operation and results in a tremendous reduction of investment, space and operation costs compared with plants where drying is made in separate equipment before grinding

SOME APPLICATIONS

Drying and grinding of petroleum coke and/or coal 97% minus 90 micron, for plants using solid fuel.

Fine grinding and drying of clays for single-fired ceramic tiles

Production of fine powders of medium hard minerals, such as talcum, gypsum, limestone, barite, lime, magnesium oxide.

CONTRUCTION FEATURES
Easy maintenance

Body of high thickness welded steel, fully protected inside by replaceable wear plates. Two large hinged covers with hydraulic system for quick opening give easy access to the grinding parts
External bearings, grease lubricated, enclosed in dust-tight supports
Toothed grinding plates wear resistant steel
Standard multi-disc rotor with swinging hammers
Heavy duty drum type rotor type “XP” with fixed hammers
Hammers of cast high chromium alloy

TECHNICAL FEATURES

Type                                             ROTODUE 4C/500        ROTODUE 4C/1000
Feed inlet                    mm          320 x 570                      320 x 1120
Maximum feed size     mm           20 ÷ 30                          20 ÷ 30
Speed                          rpm        1400 ÷ 1800                  1400 ÷ 1650
Required power         KW          2 x 45÷75                     2 x 90÷132
Capacity               (as ton/hour   2 ÷ 8                              4 ÷ 15
indication only)
Weight                          kg            5500                             10000