Mikro Pulverizer® Hammer & Screen Mill

The Mikro Pulverizer® Hammer & Screen Mill is a high speed mechanical impact mill designed for continuous size reduction of a wide range of materials down to D90 < 45 μm. Due to its reliability and durability, this device has become the industrial mill of choice with thousands in service across the world.

Design & Options:

  • Laboratory (1 HP) to production (350 HP) available
  • Process 250 gram batches up to 15 tons/hour
  • Economical milling to D90 < 45 µm
  • Easy to operate and maintain
  • Available in mild steel, stainless steel and with wear protection
  • Pressure Shock Resistant (PSR) models available
  • Various configurations available to produce a wide range of products and results
  • Very durable & reliable designs for years of production
  • Compact and easy to clean design
  • Suitable for Chemical, Pharmaceutical, Food, Mineral and Cosmetic applications
  • Cryogenic grinding possible

Interested in the Mikro Pulverizer® Hammer & Screen Mill

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

The Mikro Pulverizer® is comprised of a high speed rotor assembly fitted with hammers. The grinding chamber has a cover containing a multiple deflector liner and a retaining screen at the discharge point of the mill.

Commonly, a screw mechanism introduces feed material into the grinding chamber. The grinding process generally has three variables:

  1. Type of hammers
  2. Rotor speed
  3. Size/shape of screen opening

We use two types of hammers: the “stirrup,” which results in fine particle size; and the “bar,” which yields a coarser grind with minimal fines. Both types are tipped at the wearing edge with various abrasion resistant alloys. Low rotor speeds result in a coarse grind, and high speeds produce a fine grind. In general, a finer screen opening will result in a finer grind, and a larger screen produces courser grinds. The retaining screen does not function as a sifting screen, except in coarse granulations.

Controlled Particle Size

Optimum particle size reduction can greatly affect chemical reaction speeds, solubility, weight, color, volume, appearance and strength of ground products. Mikro-Pulverizers® provide accuracy in particle size control because the grinding action is entirely mechanical. Once a mill is set to deliver a certain product, it will continue to produce exactly the same result without adjustment.

Photo GAllery

See our hammer mill gallery showing different models, sizes, configurations and components.

REsources

Commonly Processed Materials

Designed for Chemical, Food, Pharmaceutical, Mineral, Cosmetic & Plastic applications

Silica
Toner
Ceramic pigments
Dyestuff
Phosphates
Bakery Products
Cellulose Powder
Corn
Gelatin
Mustard Seed
Peas
Rice & Rice Bran
Spices
Tri-Calcium Phosphate
Lactose
Cellulose
Calcium carbonate
Gypsum
Ground Calcium Carbonate / Limestone

Plastics
Wax
Chemical Salts
Explosives
Pigments
Barley
Chocolate Crumb
Corn Starch
Herbs
Oats
Pectin
Salt
Sugar
Wheat
Vitamins
Metallic Compounds
Catalysts
Kaolin

Powder Coatings
Carbon Black
Color Mixtures
Fertilizer
Agrochemicals
Berry Seeds
Cocoa
Flavorings
Hulls
Oyster Shells
Pigments
Sesame Seed
Sugar substitutes
Flour Milling
Hormones
Aluminum silicate
Feldspar
Zinc oxide

Synthetic Resin
Cellulose and celluloid
Detergents
Magnesium Hydroxide
Animal feed
Bran Milling & Mixing
Coffee Beans
Food Seasonings
Legumes
Pasta
Potato
Soya
Thickening agents
Nutraceutical
Proteins
Bentonite
Graphite
Talc Compaction

This is a short list of materials the Mikro Pulverizer® Hammer & Screen Mill can process. Hosokawa has conducted thousands of successful material tests on this mill.

Mikro Pulverizer® Hammer & Screen Mill Models

Samplemill
Bantam
MP 1
MP 2
MP 3
MP 4
MP 44
MP 66
Motor (HP)
0.75
1
5
20
50
100
200
300
Max. Rotor Speed (RPM)
14,000
14,000
9,600
6,900
4,650
3,450
3,450
2,300
Approx. Air Flow (ft3/min)
60-80
150-200
450-600
600-800
1,000-1,500
2,000-3,000
Scale Up Factor
N/A
0.2
1.0
4.0
10
20
40
60

System Configuration

INTERESTED IN OTHER SIZE REDUCTION SYSTEMS OR POWDER PROCESSING SOLUTIONS?

Hosokawa offers • Air Classifying, Jet, Ball, Pin and Knife Mills • Classifiers & Separators • Mixers, Blenders & Drying Equipment • Granulation & Compaction Technology • Lab & Analytical Testing Equipment

CONTACT US

Please complete our contact form or call Hosokawa at (908) 273-6360.

made-in-the-usa

The Mikro Pulverizer® Hammer & Screen Mill was designed by the Pulverizing Machinery Company in 1923. The company name was later changed to Hosokawa Micron Powder Systems in 1985. This legendary device has thousands of installations worldwide and carries a reputation for reliability, consistency and durability. The Mikro Pulverizer® Hammer & Screen Mill is designed, manufactured and assembled in the USA and comes with our pledge to performance and guaranteed dependability. Many units built over a half century ago are still in active service today.

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