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Mikro ACM® Air Classifying Mill

Mikro ACM® Air Classifying Mill

The Mikro ACM® Air Classifying Mill is an air swept mechanical impact mill designed to grind a wide range of materials down to D97 < 20 µm. Its durability, reliability, and precision are what make it one of the most popular industrial workhorses on the market.

  • Grinds and Classifies down to D97 < 20 µm
  • Designed for Chemical, Food, Pharmaceutical and Mineral materials
  • Laboratory (1 HP) to Production (600 HP) models are available
  • Processing capacities range from 0.5 lb/hr to several tons per hour
  • Excellent top size control while producing a narrow particle size distributions
  • PSR Pressure shock resistant models available
  • Can operate with heated air for flash drying
  • Available in steel, stainless steel, specialty alloys with and titanium components
  • Wear protection options include AR steel, stellite, tungsten carbide, ceramics and wear protective coatings
The Mikro ACM® Air Classifying Mill was invented by the Pulverizing Machinery Company in 1962 and is considered one of the most versatile milling systems for fine size reduction in the world. These units while being capable of producing fine, medium and coarse grinds for a wide variety of materials for Food, Pharmaceutical, Chemical and Mineral industries. The basic design of these mills is the impact size reduction that is coupled with an internal dynamic classifier which controls the outlet (product) particle size via recirculating the coarse particles back into the grinding zone. There are seven main factors which determine particle size distribution for the Mikro ACM® Air Classifying Mill. When varied, the rotor type and speed combined with the liner and hammer count affects the production of fines. The separator type and speed affects the top size of the product. And lastly, the airflow governs the throughput as well as top size and fines generation. With the endless available options a machine can be configured to process just about any material that is below MOH’s hardness of 5.
The Mikro ACM® Air Classifying Mill is available in 15 different model sizes with many variations and options to enhance performance in a wide range of applications.
Mikro ACM Model
Rotor Power (HP) Classifier Power (HP) Max. Rotor Speed (RPM) Approx. Air Flow (ft3/min) Scale Up Factor
1 ACM
1 1 22,000 60 NA
2 ACM 3 1 10,500 200 0.3
10 ACM 10 1.5 7,000 1,060 1
20 ACM 20 2 7,000 1,060 2
30 ACM 30 4 4,600 1,500 3
40 ACM 40 7.5 4,600 2,000 4
75 ACM 75 10 3,000 3,750 7.5
100 ACM 100 15 3,000 5,000 10
ACM 125 125 20 2,100 6,360 12.5
ACM 150 150 30 2,100 7,500 15
200 ACM 200 25 2,000 10,000 20
250 ACM 250 40 2,000 12,500 25
300 ACM 300 50 2,000 15,000 30
400 ACM 400 100 1,500 20,000 40
600 ACM 600 150 1,500 30,000 60
Optional Designs & Configuration
Data provided in this chart is a guideline only and does not represent a performance guarantee.

The Mikro ACM® Air Classifying Mill is designed to produce finer materials with sharper particle size distributions than most other impact milling technologies. In certain applications, a median particle size as low as 5 microns can be achieved.

The Mikro ACM® Air Classifying Mill is the main component of the size reduction system however, additional ancillary components are required for a fully functional system.

  • A feeder is required to accurately dispense product into the milling system.
  • A product collector is required to separate the product from the gas stream and collect the material.
  • Airlocks are used for feeding the system, containing system pressure and product discharging.
  • A fan is required to generate the airflow to convey, mill and classify the product.
  • Adequately sized ducting is required to connect the system components and contain and convey the product.
  • Instrumentation and valves are required to sense and regulate the various operating parameters of the system.
  • A control system is required to operate, monitor and control the output of the system.
ONCE THROUGH SYSTEM
The Mikro ACM® - Air Classifying Mill Once Through System is a common configuration suitable for most size reduction applications. This economical configuration requires less ancillary components than more complex systems and is easy to operate and maintain.
CLOSED LOOP SYSTEM
The Mikro ACM® - Air Classifying Mill can also be configured in a Closed Loop System which is specifically designed to recycle inert gas or conditioned air and reduce overall system energy requirements.
MILLING SYSTEM WITH CYCLONE
A cyclone can be integrated into most Mikro ACM® - Air Classifying Mill systems for product collection to reduce downtime for cleaning the dust collector.
EXPLOSION RESISTANT SYSTEM WITH SECONDARY CLASSIFICATION
For potentially explosive powders, equipment and ducting are designed to withstand a maximum pressure up to 10 bar(g) and the system inlet & outlet are isolated for full pressure containment.
EXPLOSION RESISTANT SYSTEM WITH SECONDARY CLASSIFICATION
For potentially explosive powders, equipment and ducting are designed to withstand a maximum pressure up to 10 bar(g) and the system inlet & outlet are isolated for full pressure containment.

The Mikro ACM® - Air Classifying Mill system is available in a wide range of sizes, materials of construction, finishes, pressure & vacuum designs, system configurations and control schemes.

Due to the Mikro ACM® - Air Classifying Mill’s air to material ratio requirement, heat sensitive materials can be handled without product degradation. When milling hygroscopic materials, conditioned inlet air can be used to reduce moisture in the system. In high temperature drying applications, the bearing housing can be insulated and air purged to protect the bearings. The mill can also operate with chilled air for heat sensitive materials to prevent build up and for more efficient grinding.

If your application requires frequent product changeover with cleaning in between, you may want to consider our Mikro ACM-Easy Access Air Classifying Mill design. This mill incorporates several unique features that allow it to be quickly and easily disassembled and cleaned.

Material Feed Material Mill Material
FOOD INGREDIENTS
Cane Sugar
Nominal 20 Mesh
96% < 200 Mesh (10x)
Soya Flake
1/4"
98% < 80 Mesh
Milk Crumb
Nominal 20 Mesh
99% < 400 Mesh
Whole Kernel Corn
Nominal 3/8"
99% < 30 Mesh
Cocoa Press Cake
65% < 100 Mesh
99% < 200 Mesh
Xantham Gum
Nominal 1/8"
97% < 44 µm
Iron Based Food Additive
1/2"
90% < 355 µm
CHEMICAL MATERIALS
Barium Sulfate
Nominal 60 µm
97% < 14 µm
Carbon Black
900 PPM > 44 µm
10–25 PPM > 44 µm
Sodium Bicarbonate
200 µm
50% < 10 µm
Phenolic Resin
1/2"
97% < 200 Mesh
Zinc Sterate
1/8" Flakes
97% < 38 µm
Potassium Phosphate
240 µm
90% < 48 µm
Soda Ash
100 µm
50% < 15 µm
Powder Coatings
1/4" Chips
50% < 25 µm
Thermo Plastic Polymer
2–5 mm
90% < 1070 µm
MINERAL PRODUCTS
Hydrous Kaolin
Nominal 325 Mesh
6.5 Hegman
Talc
Nominal 80 Mesh
50% < 7 µm
Hydrated Lime
Nominal 80 Mesh
50% < 7 µm
Soft Limestone
1/4"
99% < 25 µm
Trona
200µm
50% < 10 µm
Diatomaceous Earth
1 mm
50% < 12 µm
Magnesium Oxide
Nominal 40 Mesh
99% < 325 Mesh
PET Coke
100 µm
50% < 10 µm
Enzymes (Cryogenic)
150 µm
90% < 110 µm
Lithium Carbonate
100 µm
50% < 4 µm
Food
Animal Feed
Ascorbic Acid
Baby Formula
Bakery Products
Barley
Berry Seeds
Calcium Phosphate
Carrageen
Cellulose Powder
Chocolate Crumb
Cocoa
Coffee Beans
Corn Starch
Dried Fruits
Fiber
Fish Meal
Flavorings
Food Seasonings
Gelatin
Herbs
Hulls
Lactose
Legumes
Malic Acid
Milk Powders
Mustard Seed
Oats
Pasta
Peas
Pectin
Pigments
Potato
Potato Starch
Powdered Curd
Protein Shifting
Rice & Rice Bran
Salt 
Seaweed
Sesame Seed
Sodium Acid Pyrophosphate
Soy Protein
Soya
Spices
Sugar
Sugar Substitutes
Tea Leaves
Thickening Agents
Tri-Calcium Citrate
Tri-Calcium
Phosphate
Wheat
Chemical
Acids
Activated Carbon
Agrochemicals
Aluminum Hydroxide
Carbon Black
Cellulose
Cellulose and Celluloid
Ceramic Pigments
Chemically Derived Fibers
Chemical Salts
Color Mixtures
Color Suspensions
Detergents
Dyestuff
E-PVC
Fertilizer
Flue Gas Desulfurization
Lithium Carbonate & Compounds
Magnesium Hydroxide
Natural Rubber
Phosphates
Pigments
Plastics
Polyurethane
Powder Coatings
PVC
Silica
Synthetic Resin
Wax
Mineral
Aluminum Silicate
Calcium Carbonate
Catalysts
Feldspar
Graphite
Ground Calcium
Carbonate/Limestone
Gypsum
Kaolin
Mineral Powders
Refractories
Talc Compaction
Talc Milling
Zinc Oxide
Pharmaceutical
Active Pharmaceutical Ingredients
Amoxicillin
Cellulose
Dental Compounds
Excipients
Hormones
Inhalants
Lactose
Nutraceutical
Proteins
Vitamins
OPERATION

The Mikro ACM® - Air Classifying Mill requires air or gas for the conveying, size reduction and air classification of the product being processed. Air or gas is introduced to the Mikro ACM® - Air Classifying Mill via the main air inlet and the product inlet. As much as 30% of the total air volume can be introduced at the product inlet depending upon the application. Feed material is pneumatically conveyed under vacuum or mechanically conveyed by an auger, into the feed inlet of the mill along with the process air. Ideally, material is fed at a constant rate via a volumetric or gravimetric feeding device.

After passing through the feed inlet, material enters the grinding zone. At this point, material comes in contact with the face of the rotating hammers, where impact takes place and the material is fractured into smaller particles. Situated around the perimeter of the grinding chamber is a “multiple deflector liner”. This component assists in slowing the peripheral velocity of the product and deflecting it back into the hammer path for more efficient impact and size reduction.

The product is then conveyed upwards by the air stream through a shroud and baffle assembly that changes the direction of the product/air mixture while directing it to the classification zone. The shroud and baffle assembly also provides a separation of the mill internal area into two zones; a grinding zone and a classifying zone.

Once the product enters the classification zone, the particles are presented to the rotating classifier wheel, where based upon size and density, the particles either pass through the classifier or oversize particles are rejected and flow back to the grinding zone for additional size reduction. The processed product/air mixture then exits through the mill outlet.

There are two main parameters that are used to control and change particle cut point or maximum particle size; air volume through the mill and rotational speed of the classifier. The air flow through the mill generates a drag force to convey the particles to the classifier and the rotational speed of the classifier generates a centrifugal force that rejects the particles away from the classifier. When these two forces are equalized for a given particle mass, that particle has an equal probability of being accepted or rejected at the face of the classifier wheel. Based upon varying these opposing forces either through a change in air volume, or a change in classifier speed, the particle top size cut point can be controlled.

GRINDING CHAMBER

The grinding chamber of the ACM houses both the components of the classifying and grinding zones. They include the impact rotor and hammers, the liner assembly, the shroud and baffle assembly and the classifier wheel. The grinding chamber can be designed to operate to 10 bar(g) overpressure for explosive materials.

ROTOR & HAMMER OPTIONS

Rotors are normally supplied as single discs; however options include reduced diameter rotors for use with heavy duty liners, and rotor discs with replaceable wear plates for abrasive applications. Hammers are bolted to the rotor disc and can be easily removed and replaced. Options include:

  • Bar Hammers — for fine size reduction and maximum impact.
  • Pins — for producing coarse particle size distributions and to minimize the generation of fines.
  • J-Style Hammers — for size reduction of fibrous materials.
LINER

A liner is located at the grinding chamber wall. There are two basic types of liners; the multiple deflector (MD) liner is for fine size reduction and the smooth liner is for coarse size reduction and to minimize the generation of fines. The purpose of the liner is to provide for more efficient size reduction by slowing the peripheral speed of the particles and to deflect them back into the impact hammer path.

SHROUD & BAFFLE ASSEMBLY

The shroud and baffle assembly serves two purposes; one is to separate the internal parts of the mill into a grinding zone and a classification zone, the other is to act as a flow straightener and provide for the recirculation of the air/material mixture to the classifier and then back to the grinding zone.

DYNAMIC CLASSIFIER

The classifier is a device used to separate particles into fine and coarse fractions. The selection of the classifier wheel type is application dependent. Classifiers can be provided in short to long configurations with varying numbers of blades and blade type. Basic designs include radial or canted blade configurations.

WEAR PROTECTION

When grinding abrasive materials, pharmaceutical products or food ingredients, Hosokawa offers options to protect your mill from premature wear and to maintain the purity of product. Internal surfaces and contact parts, including the liner, grinding elements, classifier and chamber can be constructed of mild steel, stainless steel, and ceramic or coated with special alloys, like tungsten carbide.

CONTROLS

Most Mikro ACM® - Air Classifying Mill systems use an advanced PLC and an Operator Interface Terminal (OIT) to monitor and control the system operation. The PLC allows various operating parameters to be set by using PID loops. The PID Set Points can be entered on the OIT and changed while processing your material to optimize the milling process. An automatic start/stop sequence is programmed to insure consistent, repeatable results, free from operator error.

The control cabinets are completely wired and contain all necessary components to effectively keep your system making a quality product. Equipment upstream and downstream of the mill is usually integrated into the control system.

  • Speed Control — The Rotor and Classifier can each be controlled independently at specified speeds, insuring optimized milling and consistent particle size.
  • Air Flow Control — A constant air flow rate is essential for maintaining proper particle size; therefore, the air flow is controlled independently.
  • Feed Control — The speed of the feed metering device varies as a function of the rotor and/or classifier power so the system remains stable and operational at the maximum possible throughput.
  • Temperature Control —The mill, inlet or outlet temperature can be monitored and controlled to heat or cool the material as it is processed.
  • Description
  • The Mikro ACM® Air Classifying Mill was invented by the Pulverizing Machinery Company in 1962 and is considered one of the most versatile milling systems for fine size reduction in the world. These units while being capable of producing fine, medium and coarse grinds for a wide variety of materials for Food, Pharmaceutical, Chemical and Mineral industries. The basic design of these mills is the impact size reduction that is coupled with an internal dynamic classifier which controls the outlet (product) particle size via recirculating the coarse particles back into the grinding zone. There are seven main factors which determine particle size distribution for the Mikro ACM® Air Classifying Mill. When varied, the rotor type and speed combined with the liner and hammer count affects the production of fines. The separator type and speed affects the top size of the product. And lastly, the airflow governs the throughput as well as top size and fines generation. With the endless available options a machine can be configured to process just about any material that is below MOH’s hardness of 5.
  • Models
  • The Mikro ACM® Air Classifying Mill is available in 15 different model sizes with many variations and options to enhance performance in a wide range of applications.
    Mikro ACM Model Rotor Power (HP) Classifier Power (HP) Max. Rotor Speed (RPM) Approx. Air Flow (ft3/min) Scale Up Factor
    1 ACM 1 1 22,000 60 NA
    2 ACM 3 1 10,500 200 0.3
    10 ACM 10 1.5 7,000 1,060 1
    20 ACM 20 2 7,000 1,060 2
    30 ACM 30 4 4,600 1,500 3
    40 ACM 40 7.5 4,600 2,000 4
    75 ACM 75 10 3,000 3,750 7.5
    100 ACM 100 15 3,000 5,000 10
    ACM 125 125 20 2,100 6,360 12.5
    ACM 150 150 30 2,100 7,500 15
    200 ACM 200 25 2,000 10,000 20
    250 ACM 250 40 2,000 12,500 25
    300 ACM 300 50 2,000 15,000 30
    400 ACM 400 100 1,500 20,000 40
    600 ACM 600 150 1,500 30,000 60
    Optional Designs & Configuration
    Coaxial Drive
    Independent Drive
    Easy Access/ Easy Clean
    High Speed Rotor
    Pressure Shick Resistent
    E-ACM Carbon Black Mill
    Superfire Configuration
    High Temperature Operation
    Data provided in this chart is a guideline only and does not represent a performance guarantee.
  • Configuration
  • The Mikro ACM® Air Classifying Mill is designed to produce finer materials with sharper particle size distributions than most other impact milling technologies. In certain applications, a median particle size as low as 5 microns can be achieved.

    The Mikro ACM® Air Classifying Mill is the main component of the size reduction system however, additional ancillary components are required for a fully functional system.

    • A feeder is required to accurately dispense product into the milling system.
    • A product collector is required to separate the product from the gas stream and collect the material.
    • Airlocks are used for feeding the system, containing system pressure and product discharging.
    • A fan is required to generate the airflow to convey, mill and classify the product.
    • Adequately sized ducting is required to connect the system components and contain and convey the product.
    • Instrumentation and valves are required to sense and regulate the various operating parameters of the system.
    • A control system is required to operate, monitor and control the output of the system.
    ONCE THROUGH SYSTEM
    The Mikro ACM® - Air Classifying Mill Once Through System is a common configuration suitable for most size reduction applications. This economical configuration requires less ancillary components than more complex systems and is easy to operate and maintain.
    CLOSED LOOP SYSTEM
    The Mikro ACM® - Air Classifying Mill can also be configured in a Closed Loop System which is specifically designed to recycle inert gas or conditioned air and reduce overall system energy requirements.
    MILLING SYSTEM WITH CYCLONE
    A cyclone can be integrated into most Mikro ACM® - Air Classifying Mill systems for product collection to reduce downtime for cleaning the dust collector.
    EXPLOSION RESISTANT SYSTEM WITH SECONDARY CLASSIFICATION
    For potentially explosive powders, equipment and ducting are designed to withstand a maximum pressure up to 10 bar(g) and the system inlet & outlet are isolated for full pressure containment.
    EXPLOSION RESISTANT SYSTEM WITH SECONDARY CLASSIFICATION
    For potentially explosive powders, equipment and ducting are designed to withstand a maximum pressure up to 10 bar(g) and the system inlet & outlet are isolated for full pressure containment.
  • Materials
  • The Mikro ACM® - Air Classifying Mill system is available in a wide range of sizes, materials of construction, finishes, pressure & vacuum designs, system configurations and control schemes.

    Due to the Mikro ACM® - Air Classifying Mill’s air to material ratio requirement, heat sensitive materials can be handled without product degradation. When milling hygroscopic materials, conditioned inlet air can be used to reduce moisture in the system. In high temperature drying applications, the bearing housing can be insulated and air purged to protect the bearings. The mill can also operate with chilled air for heat sensitive materials to prevent build up and for more efficient grinding.

    If your application requires frequent product changeover with cleaning in between, you may want to consider our Mikro ACM-Easy Access Air Classifying Mill design. This mill incorporates several unique features that allow it to be quickly and easily disassembled and cleaned.

    Food
    Animal Feed
    Ascorbic Acid
    Baby Formula
    Bakery Products
    Barley
    Berry Seeds
    Calcium Phosphate
    Carrageen
    Cellulose Powder
    Chocolate Crumb
    Cocoa
    Coffee Beans
    Corn Starch
    Dried Fruits
    Fiber
    Fish Meal
    Flavorings
    Food Seasonings
    Gelatin
    Herbs
    Hulls
    Lactose
    Legumes
    Malic Acid
    Milk Powders
    Mustard Seed
    Oats
    Pasta
    Peas
    Pectin
    Pigments
    Potato
    Potato Starch
    Powdered Curd
    Protein Shifting
    Rice & Rice Bran
    Salt 
    Seaweed
    Sesame Seed 
    Sodium Acid Pyrophosphate 
    Soy Protein 
    Soya 
    Spices 
    Sugar 
    Sugar Substitutes 
    Tea Leaves 
    Thickening Agents 
    Tri-Calcium Citrate 
    Tri-Calcium
    Phosphate 
    Wheat
    Chemical
    Acids
    Activated Carbon
    Agrochemicals
    Aluminum Hydroxide
    Carbon Black 
    Cellulose 
    Cellulose and Celluloid 
    Ceramic Pigments 
    Chemically Derived Fibers 
    Chemical Salts 
    Color Mixtures 
    Color Suspensions
    Detergents 
    Dyestuff 
    E-PVC 
    Fertilizer 
    Flue Gas Desulfurization 
    Lithium Carbonate & Compounds
    Magnesium Hydroxide 
    Natural Rubber
    Phosphates 
    Pigments 
    Plastics 
    Polyurethane 
    Powder Coatings 
    PVC 
    Silica
    Synthetic Resin
    Wax
    Mineral
    Aluminum Silicate
    Calcium Carbonate
    Catalysts
    Feldspar
    Graphite
    Ground Calcium
    Carbonate /Limestone
    Gypsum
    Kaolin
    Mineral Powders
    Refractories
    Talc Compaction
    Talc Milling
    Zinc Oxide
    Pharmaceutical
    Active Pharmaceutical Ingredients
    Amoxicillin 
    Cellulose 
    Dental Compounds
    Excipients
    Hormones
    Inhalants
    Lactose
    Nutraceutical
    Proteins
    Vitamins
  • Operation & Design
  • OPERATION

    The Mikro ACM® - Air Classifying Mill requires air or gas for the conveying, size reduction and air classification of the product being processed. Air or gas is introduced to the Mikro ACM® - Air Classifying Mill via the main air inlet and the product inlet. As much as 30% of the total air volume can be introduced at the product inlet depending upon the application. Feed material is pneumatically conveyed under vacuum or mechanically conveyed by an auger, into the feed inlet of the mill along with the process air. Ideally, material is fed at a constant rate via a volumetric or gravimetric feeding device.

    After passing through the feed inlet, material enters the grinding zone. At this point, material comes in contact with the face of the rotating hammers, where impact takes place and the material is fractured into smaller particles. Situated around the perimeter of the grinding chamber is a “multiple deflector liner”. This component assists in slowing the peripheral velocity of the product and deflecting it back into the hammer path for more efficient impact and size reduction.

    The product is then conveyed upwards by the air stream through a shroud and baffle assembly that changes the direction of the product/air mixture while directing it to the classification zone. The shroud and baffle assembly also provides a separation of the mill internal area into two zones; a grinding zone and a classifying zone.

    Once the product enters the classification zone, the particles are presented to the rotating classifier wheel, where based upon size and density, the particles either pass through the classifier or oversize particles are rejected and flow back to the grinding zone for additional size reduction. The processed product/air mixture then exits through the mill outlet.

    There are two main parameters that are used to control and change particle cut point or maximum particle size; air volume through the mill and rotational speed of the classifier. The air flow through the mill generates a drag force to convey the particles to the classifier and the rotational speed of the classifier generates a centrifugal force that rejects the particles away from the classifier. When these two forces are equalized for a given particle mass, that particle has an equal probability of being accepted or rejected at the face of the classifier wheel. Based upon varying these opposing forces either through a change in air volume, or a change in classifier speed, the particle top size cut point can be controlled.

    GRINDING CHAMBER

    The grinding chamber of the ACM houses both the components of the classifying and grinding zones. They include the impact rotor and hammers, the liner assembly, the shroud and baffle assembly and the classifier wheel. The grinding chamber can be designed to operate to 10 bar(g) overpressure for explosive materials.

    ROTOR & HAMMER OPTIONS

    Rotors are normally supplied as single discs; however options include reduced diameter rotors for use with heavy duty liners, and rotor discs with replaceable wear plates for abrasive applications. Hammers are bolted to the rotor disc and can be easily removed and replaced. Options include:

    • Bar Hammers — for fine size reduction and maximum impact.
    • Pins — for producing coarse particle size distributions and to minimize the generation of fines.
    • J-Style Hammers — for size reduction of fibrous materials.
    LINER

    A liner is located at the grinding chamber wall. There are two basic types of liners; the multiple deflector (MD) liner is for fine size reduction and the smooth liner is for coarse size reduction and to minimize the generation of fines. The purpose of the liner is to provide for more efficient size reduction by slowing the peripheral speed of the particles and to deflect them back into the impact hammer path.

    SHROUD & BAFFLE ASSEMBLY

    The shroud and baffle assembly serves two purposes; one is to separate the internal parts of the mill into a grinding zone and a classification zone, the other is to act as a flow straightener and provide for the recirculation of the air/material mixture to the classifier and then back to the grinding zone.

    DYNAMIC CLASSIFIER

    The classifier is a device used to separate particles into fine and coarse fractions. The selection of the classifier wheel type is application dependent. Classifiers can be provided in short to long configurations with varying numbers of blades and blade type. Basic designs include radial or canted blade configurations.

    WEAR PROTECTION

    When grinding abrasive materials, pharmaceutical products or food ingredients, Hosokawa offers options to protect your mill from premature wear and to maintain the purity of product. Internal surfaces and contact parts, including the liner, grinding elements, classifier and chamber can be constructed of mild steel, stainless steel, and ceramic or coated with special alloys, like tungsten carbide.

    CONTROLS

    Most Mikro ACM® - Air Classifying Mill systems use an advanced PLC and an Operator Interface Terminal (OIT) to monitor and control the system operation. The PLC allows various operating parameters to be set by using PID loops. The PID Set Points can be entered on the OIT and changed while processing your material to optimize the milling process. An automatic start/stop sequence is programmed to insure consistent, repeatable results, free from operator error.

    The control cabinets are completely wired and contain all necessary components to effectively keep your system making a quality product. Equipment upstream and downstream of the mill is usually integrated into the control system.

    • Speed Control — The Rotor and Classifier can each be controlled independently at specified speeds, insuring optimized milling and consistent particle size.
    • Air Flow Control — A constant air flow rate is essential for maintaining proper particle size; therefore, the air flow is controlled independently.
    • Feed Control — The speed of the feed metering device varies as a function of the rotor and/or classifier power so the system remains stable and operational at the maximum possible throughput.
    • Temperature Control —The mill, inlet or outlet temperature can be monitored and controlled to heat or cool the material as it is processed.
Easy Access Air Classifying Mill
Milling Rice on the ACM
Cleaning Hosokawa's ACM
Mikro ACM Air Classifying Mill Demo
Webinar: Size Reduction with an Air Classifying Mill
Carbon Black Grit Reduction Mill

INTERESTED IN THE MIKRO ACM® AIR CLASSIFYING MILL?

Hosokawa’s applications engineers can answer all your size reduction questions.

Highly Specialized Air Classifying Mills

Easy Access ACM
The Easy Access ACM is designed for applications that require frequent cleaning or product changeovers. The mill performs the same as the original ACM, however the internal components can be quickly removed and cleaned.
E-ACM Carbon Black Mill
The E-ACM is specially designed for the grit reduction of carbon black down to < 1 PPM + 325 MESH with models up to 300 HP.
PSR Air Classifying Mill
Hosokawa’s Press Shock Resistant (PSR) air classifying mills can contain an over pressure of 10 bar (g) in the event of an explosion.
Super-fine ACM
Super-fine ACM’s can achieve extremely narrow particle size distributions on ultra-fine materials down to D97 < 10 µm in many applications.

Hosokawa Milling Technologies

Hosokawa Micron Powder Systems offers a wide range of equipment for coarse granulation to ultra-fine size reduction.

  • Coarse Granulation to Ultra-fine Grinding
  • Lab Scale to Large Production Models
  • Air Classification Mills
  • Jet Mills: Opposed Gun, Fluidized & Spiral
  • Hammer & Screen Mills
  • Pin & Universal Mills
  • Pre-Crushers & Granulators
  • Ball & Media Mills
  • Attrition Mills
  • Wet & Dry Grinding

Contact Us

For more information on The Mikro ACM® Air Classifying Mill, please complete the following form, or call (866) 584-0950.

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Thank you for contacting Hosokawa regarding the Mikro ACM® Air Classifying Mill.
If your request is urgent, you can also call Hosokawa at (908) 273-6360.
Hosokawa Micron Powder Systems
10 Chatham Road
Summit, New Jersey 07901 USA
P: (908) 273-6360
F: (908) 273-7432
help@hmps.hosokawa.com