HOSOKAWA MICRON - Teknol · MIKRO ACM Air ClAssifier Mill MIKRO ACM - MIKRO MAK - MIKRO PulveRIzeR - MIKROClAssIfIeR - MIKRO InjeCt A Division of HOSOKAWA ALPINE Aktiengesellschaft

MIKRO ACMA i r C l A s s i f i e r M i l l

MIKRO ACM - MIKRO MAK - MIKRO PulveRIzeR - MIKROClAssIfIeR - MIKRO InjeCt

A Division of HOSOKAWA ALPINE Aktiengesellschaft



Hosokawa Micron - A Division of Hosokawa Alpine AG is a member

of the Hosokawa Micron Group, responding to global needs through

emphasis on materials science and engineering. The Group is an

international provider of equipment and technology for powder

and particle processing, plastics processing and confectionery

products. The Group maintains facilities for research, engineering,

manufacturing and service in each of the world's major industrial

markets.

© Hosokawa Micron, Cologne 2006. Printed in Germany.

subject to change without notice.All information in this brochure is purely informative and non-binding. Our quotations are authoritative with reagard to orders.

AC

M e

1-06

/06-

1/4M

HOSOKAWA MICRON A Division of HOsOKAWA AlPiNe Aktiengesellschaft

Welserstr. 9/11

51149 Cologne - Germany

Mail to:

P.O.Box 92 02 62

51152 Cologne - Germany

Tel: +49 2203 308-0 - fax: +49 2203 308-125

email: [email protected]

vIsIt OuR websIte: www.hosokawamicron.de




PROCess teCHnOlOGIes fOR tOMORROwsM 2 / 3

it is suitable for the size reduction of a great

variety of products and is employed in all

branches of industry:

• Chemicals

• Powder coatings

• Minerals

• foodstuffs

• Pharmaceuticals

• Metals

The Mikro ACM is compact in design with

strategically placed elements. The combi-

nation of impact grinding with the inte-

grated dynamic classifier constitutes the

perfect solution in particular for the fine

and ultrafine comminution of soft to medi-

um-hard products.

PriNCiPle Of OPerATiON

The product is fed into the Mikro ACM

pneumatically. size reduction is a result of

the feed product impacting against the

rotating grinding elements and against the

stationary liner. At beater edge speeds of

up to 140 m/s, fineness values of d99 = <

10 µm are achieved. The product becomes

entrained in the cooling, conveying and

classifying air drawn through the mill by

the downstream fan and is then routed

along the edges of the shroud ring guide

vanes. Characteristic for the Mikro ACM

is the integrated dynamic classifier. The

product/air mixture is distributed uniformly

by the guide vanes to the rotating classifier.

Because of the two opposing forces and

the different masses of the particles, the

product is separated in the classifying zone

into a coarse fraction and a fine fraction. The

coarse material is rejected by the classifying

wheel and returned to the grinding zone for

final comminution. The fines pass through

the classifying wheel and exit the mill. The

cut point and thus the defined maximum

particle size of the product is a function of

the classifying wheel speed, which can be

steplessly adjusted even during operation.

DesiGN PHilOsOPHY

The Mikro ACM classifier mill is available in

four different design variants, meaning that

the right mill type is available for just about

every application. This extremely flexible

design concept makes the Mikro ACM clas-

sifier mill an unparalleled all-rounder. The

decades of further development and con-

tinuous improvement have made it possible

to optimise important performance features

for all the Mikro ACM mill types:

• The pneumatic product feed method

ensures maximum throughput rates and

facilitates a flexible configuration.

• Mikro ACM classifier mills are pressure-

shock-resistant to 11 bar overpressure,

thus achieving the highest possible degree

of explosion protection.

• All our products are certified in accord-

ance with ATeX to match your require-

ments in production.

• The tangential air inlet ensures optimum

flow conditions, reduces the pressure drop

of the mill and prevents product deposits

underneath the grinding disc.

• low-noise design brought about by noise

control measures ensures minimum noise

emission.

• .With the optional air-rinsed classifying

wheel gap, oversize particles are reli-

ably prevented, especially in the case of

ultrafine grinding. The extremely sharp top

cut results in an optimum product quality.

iMPOrTANT feATures

• Grinding and classifying

with one single machine

• Compact and space-saving design

• Cool and low-intensity grinding

• steep particle size distributions

• exact topsize limitation

• steplessly adjustable cut point

• simple to clean and maintain

• High availability

• low noise emission

• low specific energy requirements

• Pressure-shock-resistant and

wear-protected

• suitable for impact drying

GriNDiNG CHAMBer

The product-contact grinding chamber and

the fittings comprise:

- grinding disc

- shroud ring

- lining

- classifier

and are made of cast iron, mild steel

or stainless steel. The surfaces can be

treated and polished to match individual

requirements. The grinding chamber is also

available in pressure-shock-resistant design

to 11 bar overpressure.

MIKRO ACM - A IR ClAss If IeR MIllT H e A l l - r O u N D TA l e N T f O r f i N e A N D u lT r A f i N e G r i N D i N G

1 Grinding disc with pins or

other grinding elements

2 lining

3 shroud ring

4 Classifying wheel

5 Grinding zone

6 Classifying zone

7 Classifier rotor drive

8 Grinding disc drive

2 3 49

6

1

78

5

Air supply

Product-Air Mixture

Product supply

MAiNTeNANCe AND CleANiNG

The compact mill design ensures excellent

accessibility to the inside of the mill. The

fastening system of the grinding chamber

cover can be released without any trouble

and, dependent on the design, the cover

can be opened either manually or by means

of an electric drive. This makes the cleaning

and maintenance procedures necessary

when the product is changed or when

worn grinding elements are exchanged, etc.

extremely simple. The entire rotor bearing

can be removed quickly and easily after

releasing the bolts in the grinding chamber

housing. The availability of the Mikro ACM

is particularly high as a result of this ease of

cleaning and maintenance.

WeAr PrOTeCTiON

The Mikro ACM can be protected against

wear if used for grinding abrasive products.

The following components are available in

wear-protected design for just about every

machine size:

- Product inlet

- lining

- Grinding elements

- Classifying wheel

- Grinding chamber cover

- Product outlet

An individual wear-protection concept is

elaborated for every problem specification,

whereby a great variety of special materials

are available to choose from:

- spheroidal graphite cast iron

- HArDOX®

- Hardened stainless steel

- Tungsten carbide

- Cast basalt

- Zirconia

THe MiKrO ACM WAs lAuNCHeD ON THe MArKeT iN 1962 As THe firsT ClAssifier Mill AND HAs BeeN CONTiNuOuslY iMPrOveD siNCe THeN TO ACCOMMODATe CHANGiNG MArKeT NeeDs.

POwdeR And PARtICle PROCessInG

PROCess teCHnOlOGIes fOR tOMORROwsM

MIKRO ACM CX OuR stAndARd

DesiGN AND TeCHNOlOGY

The coaxial bearing unit allows both classifier

and grinding disc shafts to be driven from

underneath the mill, thus making a vertical

product discharge possible. Dependent on

the application and set-up, the elimination

of bends at the mill outlet is advantageous

because it enables the ACM to handle

products which might otherwise build up

and block the discharge.

The one-piece mill housing is equipped with

a cover that can be opened manually or

electrically and is installed together with the

two drive motors on a common base frame.

The power transmission to the drive shaft

is via v-belts. They are installed inside the

base frame and are easy to access, making

maintenance and exchange child‘s play. To

ensure reliable transmission of the high

drive power in the case of the ACM 500 and

600, an angular gear unit with oil circulation

lubrication system is used.

MIKRO ACM Cl wItH dIReCt ClAssIfIeR dRIve


The Mikro ACM Cl with separate bearings for classifier and

grinding disc is ideal for all those applications where the preferred

configuration is a product discharge duct that is horizontal with the

shortest possible connection to downstream system sections. This is

advantageous, for example if regular cleaning of the product-contact

system components is necessary and consequently a compact set-up

with short product discharge ducts is needed. The separate bearings

of the drive shafts and the associated improved heat dissipation

allows service lives to be achieved which permit continuous operation

even under rough conditions. The direct classifier drive via a motor

mounted on the mill cover makes drive elements such as v-belts and

belt pulleys superfluous. in the case of the grinding disc, however, the

established bearing with belt drive is employed.

4 / 5

rOTOr DesiGN

A special feature of the Mikro ACM classifier

mill is the coaxial arrangement of the

classifier and grinding disc drive shafts.

The shaft bearing is equipped with a proven

sealing system which prevents both product

ingress and the discharge of lubricant. This

guarantees a long service life and prevents

product contamination. Bearings equipped

with sealing air or cooling are available for

special applications.

The Mikro ACM CX with its coaxial bearing is the standard design in our ACM product line.

flOW siMulATiON Of AN ACM 10 CX

iMPOrTANT feATures

• separate bearings for classifying wheel and

grinding disc with directly driven classifying wheel

• Horizontal product discharge

• Compact combination with MikroClassifier or cyclone possible

• especially suitable for temperature-sensitive products

• Tangential air inlet

MiKrO ACM 40 Cl WiTH DireCT ClAssifier Drive

MiKrO ACM 40 Cl WiTH OPeN CHAMBer CHAMBer

MiKrO ACM 60 CX WiTH OPeN CHAMBer COver

iMPOrTANT feATures

• Compact design

• Classifier and grinding disc

drive equipped with coaxial bearing




MIKRO ACM eC und eC-Cl CleAnInG MAde eAsy


The Mikro ACM eC (easy Clean) was developed to meet the demands

for quick and easy cleaning. This is especially important for those

branches of industry where the product is changed frequently or

for batch production. The Mikro ACM eC is tailor-made for these

applications. The mill housing is designed as a two-chamber system.

Because the inside components are not welded or bolted to the

housing, they can be simply removed once the grinding chamber

cover has been hinged back. Dependent on the machine size, the

grinding chamber is made up of several segments, thus reducing

the weight of the individual elements to a maximum of 25 kg.

This makes cleaning and maintenance procedures especially user-

friendly, and the legal requirements regarding occupational safety

are fulfilled without exception.

lAbORAtORy And MInI bAtCH PROduCtIOn

6 / 7

With the newly developed easy-clean

concept, the Mikro ACM machine sizes 2 and

5 offer a high degree of user-friendliness.

reducing the cleaning effort of this mill type

to an absolute minimum when changing

products was one of the most important

development objectives. This philosophy has

also been realised with all other components

of this compact mill system.

APPliCATiONs

• Production of mini batches for sampling

and tests

• Determination of the setpoint and

optimisation parameters for other Mikro

ACM machine sizes.

MiKrO ACM 30 eC

iMPOrTANT feATures

• Tailored to the production of powder coatings,

pharmaceuticals and foodstuffs

• especially suitable for frequent product changes

• 50% time savings when cleaning

- high availability

- enormous cost savings

• Quiet in operation

• Also available in Cl design. The combination of the Mikro ACM

eC with the design features of the Cl model unites all the advan-

tages of these two mill types in one single machine.


• Air-cooled liner for temperature-sensitive products

e A s Y C l e A N D e s i G N f O r

M i N i M u M C l e A N i N G T i M e

DesiGN

The Mikro ACM 2/5 eC grinding system

is supplied either as a compact unit or

in a configuration to suit the customer‘s

individual requirements. With a space

requirement of only 15 m2, this mobile

system can be set up almost anywhere

where there is a mains power socket and

a compressed air connection. The system

comprises mill, cyclone or MikroClassifier,

residual dust filter, air intake system, side-

channel fan, feed metering and discharge

units. The components are available in both

explosion-pressure-shock-resistant design

(Psr 11) or non-Psr design.

iMPOrTANT feATures

• easy to clean

• easy to open

• extremely compact

• On wheels, and thus mobile

• Throughputs up to 80 kg/h and 150 kg/h

• Quiet in operation

• Classifying wheel gap rinsing

• operation via touch screen

s M A l l A N D C O M PA C T - O N lY 1 5 m 2 s PA C e r e Q u i r e M e N T

Mill seT uP iN 3D MiKrO ACM eC

MiKrO ACM eC MOuNTiNG PArTs

MiKrO ACM 2 eC COMPACT sYsTeM



APPlICAtIOn AReAs

Although also suitable for coarse comminution, Mikro ACM classifier

mills are especially ideal for the fine and ultrafine comminution of

products to a hardness of 4 on the Mohs‘ scale. The sophisticated

overall concept with high air throughput, favourable material flow

and optimised grinding chamber geometry permits the size reduc-

tion of even heat-sensitive products and those that tend to deposit

and build up.

8 / 9

Product fineness throughput kg/h 99%/μm ACM 10

Ammonium phosphate 71 110

Bisphenol A 63 370

Calcium stearate 71 375

Dextrose 20 9,3

e-PvC 40 200

fish meal 100 100

Ginger 500 250

Herbicide 80 240

iron oxide 5 60

Jellification agent 250 170

Kaolin 50 180

lead oxide 40 280

Melamin resin 100 290

Nickel hydroxide 40 246

Organic pigments 2,6 122

Powder Coating 103 240

Quinoline dyestuff 125 150

rice 75 66

silicagel 61 214

Talcum 20 100

urea formaldehyde resin 125 120

vinyl compound 105 100

Wheat kernel 100 270

Xanthan 90 27

Yohimbin 130 25

Zeolite 40 1.305

GriNDiNG DisC Drive AND ClAssifier Drive

Both the grinding disc drive and the classifier drive are available

with speed control. The speeds and thus the particle size distribution

of the end product can be adjusted steplessly during operation.

GriNDiNG eleMeNTs

for each and every application, the optimum type of grinding

elements is selected to suit the different size reduction specifications

as a function of the product properties. The type, shape and number

of grinding elements all have an influence on the grinding result.

The following equipment is available:

• Grinding pins

• Grinding blocks, smooth

• Grinding blocks, notched

ClAssifier

Classifying wheels in three different heights and with different

arrangements of the classifier blades are available for every Mikro

ACM machine size:

• Tangentially arranged classifier blades

• radially arranged classifier blades

• Optionally available with top ring

Classifiers with radially arranged classifier blades are used above all

for products that tend to cake. The number of classifier blades is

chosen to suit the respective Mikro ACM machine size.

rOTOr

The exchange of grinding and classifying elements is just one

more instance when the available rotor designs demonstrate their

superiority over other solutions. After releasing and removing just a

few fastening elements, the classifier, grinding disc and liner can be

exchanged quickly and easily.

PROCess COntROl And PROCess vIsuAlIsAtIOn

Prior to the planning stage, we investigate

the special demands of your production

sequence as well as the restrictions created

by the supply network, the environmental

conditions (e.g. system or control cabinet in

a potentially explosive atmosphere, i.e. gas

and/or dust), and then systematically convert

this knowledge into a viable concept.

CONTrOl CABiNeT

state of the art are PlC units operated via

touch panels which are either integrated into

the main cabinet or can be installed next to the

operator. The control cabinets are completely

wired and contain all the operating elements

necessary to control the system. external units

such as screening machines or packing systems

can also be factored into the configuration.

As a standard feature, every control cabinet is

equipped with three different operating modes:

automatic mode, which allows the system to

be started up and shut down automatically;

manual mode, which allows components to be

switched on and off individually; and cleaning

mode, during which for example, the flap

valves automatically open and the fan runs at

low power.

We offer control systems that improve the

stability of the production process and

make it even more independent of operator

intervention.

• rotor speed control

The rotor speed of the mill, the classifier

and the cyclone can each be controlled

independent of each other.

• Air flow rate control

A constant air flow rate that is independent

of the variation of other parameters makes

fast adjustment to a new particle size

distribution possible.

• Output control

The speed of the feed metering screw is

varied as a function of the rotor and/or

classifier current so that the system remains

stable and always operates at the maximum

possible throughput.

• Temperature control

it can be used either for heating or cooling.

Dependent on the mill inlet or outlet

temperature, either a valve in the cooling

circuit or the heater is addressed.

• ratio control

Two feed metering screws are operated

at a predefined ratio, e.g. 30:70, which

– dependent on the product – cuts the need

for an external mixing process.

COMMuNiCATiON iNTerfACes

There are a number of different options

available for communicating with higher-

order process visualisation systems, for

example ethernet, TCP/iP or digital and

analogue inputs and outputs.

An optional modem makes it possible

for us here at HOsOKAWA MiCrON to

set up a connection to your production

system as a point-to-point connection via

the telephone network (analogue or isDN).

This method ensures that the data security

or access security of your system remains

uncompromised: all you need to do to

effectively break any external connection

with your system is to pull the telephone

jack out of the socket.

C O M P e T e N C e f r O M A - Z

The control cabinet plays an important role in ensuring an efficient and reliable production sequence. All the safety, switching and operating elements must be coordinated to suit the production process and the environmental conditions at the site of production.

CONTrOl CABiNeT WiTH PlC uNiT AND TOuCH PANel

10 / 11


MIKRO ACM PROduCt lIne

eNGiNeeriNG serviCe

HOsOKAWA MiCrON offers a complete and

comprehensive engineering service. This

makes things a lot easier for you, because

not only do you not need to concern yourself

with such elaborate tasks as project planning

and design, but we also take care of the

complete order processing, scheduling and

deadline control. As a result of our extensive

experience, the individual components can

be assembled by HOsOKAWA MiCrON

to form a complete package reliably and

quickly. The first step is to discuss the process

sequence and clarify technical details as well

as establish the interfaces. The customer

thereby determines the scope of delivery

and services to be provided by HOsOKAWA

MiCrON. for us, system engineering means

the engineering, supply and performance

warranty of every stage that is relevant for

the grinding and classifying technology:

upstream, in between and downstream of

HOsOKAWA MiCrON‘s well-proven units.

MiKrO ACM MACHiNe siZes

The Mikro ACM is available in 19 machine sizes with drive power

values of between 3 and 450 kW. The grinding chamber and

grinding elements as well as air flow rates, classifier and grinding

disc speeds are exactly matched and enable a direct comparison of

the entire product line. The grinding results of one mill size can thus

be scaled up (or down) to the other machine sizes.

Machine size 2 5 10 15 20 25 30 40 50 60 75 100 120 150 200 300 400 500 600

Motor rotor kW 3 5.5 7.5 11 15 18.5 22 30 37 45 55 75 90 110 160 250 315 375 450

Mmotor classifier kW 0.55 1.1 2.2 3 4 4 5.5 7.5 7.5 11 11 15 15 18.5 37 45 75 90 110

speed h 1/min 10660 9400 6215 6215 4970 4970 4320 4320 3295 2625 2625 2100 2100 2100 1850 1650 1400

Mill max. 1/min 11900 10400 8880 8880 6990 6990 5770 5770 4580 3750 3750 2950 2950 2950 2000 1850 1860

speed min. 1/min 1000 1200 700 700 700 700 600 600 600 600 600 800 800 800 600 600 400

Classifier max. 1/min 5400 4600 4000 4000 3250 3250 2920 2920 3250 2650 2650 2400 2400 2400 2200 2000 1860

Airi flow intake m3/h 330 510 900 1350 1800 2250 2700 3600 4500 5400 6750 9000 10800 13500 18000 27000 36000 45000 54000

Bypass m3/h 60 100 180 270 360 450 540 720 900 1080 1350 1800 2100 2700 3000 3000 4000 4000 4000

Capacity factor mm 0.2 0.5 1 1.35 1.8 2.25 2.7 3.6 4.5 5.4 6,75 9 10.8 13.5 18 27 36 45 54

Dimensions

length mm 1630 1450 1450 1450 1600 1600 1750 1750 1750 2450 2450 2850 2850 2850 3310 3740 4470

Width mm 1220 580 580 580 700 700 700 700 700 1060 1060 1200 1200 1200 1300 1500 1830

Height kg 1650 790 850 850 1000 1000 1300 1300 1300 1587 1587 1731 1731 1731 2180 3010 2010

Weight kW 500 520 600 620 750 770 900 1000 1800 2400 2500 2800 2800 3000 9500 12500 16800-19200

ACM Typ features 2 5 10 15 20 25 30 40 50 60 75 100 120 150 200 300 400 500 600

CX coaxial rotor- bearing

Cl direct classifier drive

eC easy Clean with coaxial rotor bearing

eC-Cl easy Clean with direct classifier drive

f l e X i B i l i T Y i s T H e P e r f e C T s O l u T i O N f O r e v e rY A P P l i C AT i O N

...we OffeR full seRvICe

AfTer-sAles serviCe

We supply complete turnkey systems to

include installation, commissioning and

personnel training. Our after-sales service

is your guarantee of optimum service and

technical support around the world, as well

as the supply of spare parts throughout the

entire lifetime of the system.

• installation

• Commissioning

• Maintenance

• upgrading

• Training

sPAre PArTs

Only the speedy supply of spare parts will

ensure smooth production operations. upon

request, we will stock the necessary parts

for you so that we can make an overnight

delivery when necessary.

APPliCATiON TesTiNG CeNTre

HOsOKAWA MiCrON operates an application

testing centre in Cologne which is also used

for customer trials. We test your products

with the aim of finding the optimum

operating parameters. When planning new

systems, these results are used to determine

the optimum system size and configuration.

Customer satisfaction is the goal towards which we orient our entire

business. We endeavour to achieve this goal on the one hand with

machines and systems of the highest technical quality, and on the

other hand by providing our customers with the best possible service.

Our strategy is to supply our customers with grinding and classifying

COPORAte PHIlOsOPHy

systems which deliver product quality to specifications. At the same

time we take great pains to ensure that our systems and components

are not only user-friendly, but also easy to clean and maintain. We

furthermore invest a great deal in the continual improvement of our

machines so that we can remain on the leading edge of technology.

MiKrO ACM TYPes

The Mikro ACM is available in 4

different designs for almost all the machine sizes.


Documents

HOSOKAWA MICRON - Teknol · MIKRO ACM Air ClAssifier Mill MIKRO ACM - MIKRO MAK - MIKRO PulveRIzeR - MIKROClAssIfIeR - MIKRO InjeCt A Division of HOSOKAWA ALPINE Aktiengesellschaft