Hosokawa - Mikro-ACM

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The Mikro-ACM air-classifier mill is a high-speed impact mill that offers grinding and classifying in a single machine. The Mikro-ACM air-classifier mill combines the features of ultrafine grinding and internal classifying and is available in a range of sizes from 3 – 450 kW. Soft to medium hard products up to a hardness of 4 Mohs. Chemical industry applications include: powder coatings, resins, etc. Materials can be grinded to D97 = 10 µm and steep particle size distributions can be achieved. Induced airflow through the grinding chamber in conjunction with an internal dynamic classifier wheel provides superior particle size control. The closed circuit grinding principal with distinct grinding and classifying zones offers unsurpassed stability even under full load conditions. The co-axial arrangement of the classifier and rotor disc drive shafts produces a compact mill profile. The grinding chamber and the drive motors are mounted on a rigid steel baseframe while the pulleys and drive belts are concealed within the baseframe. The Mikro-ACM air-classifier mill is ideal for use with powder coatings, resins, food and pharmaceutical operations. The Mikro-ACM air-classifier mill incorporates explosion protection up to 11 bar, low noise and an outstanding accessibility. The Mikro-ACM air-classifier mill is suitable for a wide range of high performance milling operations where an ultrafine material with steep particle size distribution is required.

Design Features:

• Grinding and classifying in a single machine
• Cool and smooth grinding
• Steep particle size distribution
• Sharp classifier cut point that is instantly adjustable
• Easy cleaning and maintenance
• Low specific energy requirements
• Compact design
  

The Mikro-ACM air-classifier mill, pictured above, can achieve <75µm with a throughput of 4.5 t/h when grinding cacao. The Mikro-ACM® air-classifier mill is ideal for use in powder coating, chemical and food operations.

Random Capabilities For the Mikro-ACM Air Classifying Mill
Material	Feed Size	End Fineness	Rate(lbs/hr/hp)
Came sugar	Nominal 20 Mesh	96%<200 Mesh (10x)	110
Came sugar	Nominal 20 Mesh	98%<325 Mesh (fondant)	75
Hydrous Kaolin	Nominal 325 Mesh	6.5 hegman	40
Calcined Kaolin	Nominal 325 Mesh	6 hegman	28
Talc	Nominal 80 Mesh	99%<325 Mesh	45
Soya Flake	1/4" - 0	98%<80 Mesh	70
Hydrated Lime	Nominal 80 mesh	97%<25 Microns	25
Limestone (soft)	1/4" - 0	97%<20 Microns	15
Milk Crumb	Nominal 20 Mesh	99%<400 Mesh	25
Magnesium Oxide	Nominal 40 Mesh	99%<325 Mesh	50
Cocoa Press Cake(10-12% butter fat)	65%<100 Mesh	99%<200 Mesh	75
Phenmlic Resin	1/2" - 0	97%<200 Mesh	70
Zinc Sterate	1/8" Flakes	97%<38 Microns	15
Xanthan Gum	Nominal 1/8"	97%<44 Microns	17
Whole Kernal Corn	Nominal 3/8"	99%<30 Mesh	22.5
Barium Sulfate	Nominal 60 µ	97%<14 Microns	20
Carbon Black	900 PPM>44 µ	10-25PPM>44Microns	54
Note: The above results are to be used for reference purposes only. Testing is required on each specific process material to establish throughput at a given fineness

 

Mikro-ACM Air Classifying Mill Chart of Model Ranges
Mill size	Rotor Power (HP)	Classifier Power (HP)	Rotor Speed (Max)	Classifier Speed (RPM)	Mill Inlet Airflow (NM3/hr)	Mill Intel Airflow(ACFM)	Scale Up Factor
1L	1	1	22000	2000-10000	102	60	0
2	5	1	10600	1000-5400	325	190	0.2
5	7.5	1.5	9400	1200-4600	500	300	0.5
10	10	2	6200	700-4000	900	530	1
15	15	2	6200	700-4000	1350	800	1.35
20	20	3	5000	700-3250	1800	1060	1.8
25	25	3	5000	700-3250	2250	1325	2.25
30	30	7.5	4300	600-2900	2700	1590	2.7
40	40	7.5	4300	600-2900	3600	2120	3.6
50	50	7.5	3300	600-2900	4500	2650	4.5
60	60	10	2700	600-2650	5400	3180	5.4
75	75	15	2700	600-2650	6750	3975	6.75
100	100	15	2100	600-2400	9000	5300	9
125	125	20	2100	600-2400	10800	6360	10.8
150	150	25	2100	600-2400	13500	7950	13.5
200	200	40	1850	500-2200	18000	10600	18
300	300	50	1650	500-2200	27000	15900	27
400	400	100	1400	400-1850	36000	21200	36
500	500	125	1400	400-1850	45000	26500	45
600	600	150	1400	400-1850	54000	31800	54