Planetary Ball Mill (Net weight – 290 kg)

The Planetary Ball Mill (Net weight – 290 kg) is a robust floor model with 4 grinding stations and accepts grinding jars with a nominal volume from 12 ml to 500 ml. It processes up to 8 samples simultaneously which results in a high sample throughput.

The extremely high centrifugal forces of Planetary Ball Mills result in very high pulverization energy and therefore short grinding times.

The mill is ideally suited for tasks in research like mechanochemistry (co-crystal screening, mechano-synthesis, mechanical alloying and mechanocatalysis), or ultrafine colloidal grinding on a nanometer scale, as well as for routine tasks such as mixing and homogenizing soft, hard, brittle or fibrous materials.

THE HIGH-VOLUME BALL MILL FOR HIGH THROUGHPUT APPLICATIONS

• Max. speed 400 rpm, large sun wheel

• Up to 10 mm feed size and 0.1 °m final fineness

• 4 grinding stations for jars from 12 ml up to 500 ml, jars of 12 – 80 ml can be stacked (two jars each)

• GrindControl to measure temperature and pressure inside the jar.

• Aeriation lids to control the atmosphere inside the jar

• Floor model, storable SOPs and cycle programs, 5 different jar materials for dry and wet grinding

FUNCTIONAL PRINCIPLE

The grinding jars are arranged eccentrically on the sun wheel of the planetary ball mill. The direction of movement of the sun wheel is opposite to that of the grinding jars in the ratio 1:-2 (or 1:-2.5 or 1:-3).

The grinding balls in the grinding jars are subjected to superimposed rotational movements, the so-called Coriolis forces. The difference in speeds between the balls and grinding jars produces an interaction between frictional and impact forces, which releases high dynamic energies.

The interplay between these forces produces the high and very effective degree of size reduction of the planetary ball mill.

Applications :

• pulverizing, mixing, homogenizing, colloidal milling, mechanical alloying, mechanosynthesis, nano grinding, co-crystal screening

Field of application :

• agriculture, biology, chemistry, construction materials, engineering / electronics, environment / recycling, geology / metallurgy, glass / ceramics, medicine / pharmaceuticals

Feed material :

• soft, hard, brittle, fibrous - dry or wet

Size reduction principle :

• impact, friction

Material feed size :

• < 10 mm

Final fineness :

• < 1 °m, for colloidal grinding < 0.1 °m

Batch size / feed quantity :

• max. 4 x 220 ml, max. 8 x 20ml with stacked grinding jars

No. of grinding stations :

• 4 / 2

Speed ratio :

• 1:-2 / 1:-2.5 / 1:-3

Sun wheel speed :

• 30 - 400 min-1

Effective sun wheel diameter :

• 300 mm

G-force :

• 26.8 g

Type of grinding jars :

• EasyFit, optional areation covers, safety closure devices

Material of grinding tools :

• hardened steel, stainless steel, tungsten carbide, agate, sintered aluminum oxide, silicon nitride, zirconium oxide

Grinding jar sizes :

• 12 ml / 25 ml / 50 ml / 80 ml / 125 ml / 250 ml / 500 ml

Stackable grinding jars :

• 12 ml / 25 ml / 50 ml / 80 ml

Adapter for single-use glas vials :

• 24 x 1.5 ml / 7 x 20 ml

Setting of grinding time :

• digital, 00:00:01 to 99:59:59

Interval operation :

• yes, with direction reversal

Interval time :

• 00:00:01 to 99:59:59

Pause time :

• 00:00:01 to 99:59:59

Storable SOPs :

• 10

Measurement of input energy possible :

• yes

Interface :

• RS 232 / RS 485

Drive :

• 3-phase asynchronous motor with frequency converter

Drive power :

• 1.5 kW

Electrical supply data :

• different voltages

Power connection :

• 1-phase

Protection code :

• IP 30

Power consumption :

• ~ 2200 W (VA)

W x H x D closed :

• 836 x 1220 (1900) x 780 mm

Net weight :

• ~ 290 kg

Standards :

• CE