Planetary Ball Mill 4x500 ml

The planetary ball mill is a small and easy-to-use laboratory ball mill for fine grinding, mixing, homogenisation, mechanical alloying, cell disruption, small sample preparation, new product development and small volume high-tech material production.

The planetary ball mill is characterised by its small volume, high efficiency, fast clamping and quiet operation. The system can be used to grind various materials down to 0.1 µm. It can also be used to grind and mix various products of different materials and particle sizes in dry or wet process.

The planetary ball mill is based on a system of several ball mills (placed on a rotating base as shown in the figure below) which are filled with balls. Two rotational motions move the ball mills. As in a planetary system, the mills rotate in an orbit around a centre. This rotational motion generates the automatic movement of the mills. The resulting centrifugal action and acceleration force achieves an efficient grinding action. There are forces acting according to the Coriolis acceleration force. The result is intensive grinding between the ball mill and the sample.

There are different rotation ratios. With a rotation ratio of 1:-2, the mill rotates twice during one revolution of the rotating base. The negative sign in this case indicates the opposite direction of rotation. Depending on the rotation speed, either the balls cross the vessel in the middle and hit the sample against the inner wall of the vessel weakening its resistance or, in a different speed pattern, the balls roll over the sample and weaken the ground material.

The selection of the ball vessel material and the correct filling level has a great impact on the grinding result. Depending on the application, the correct quantity (volume) and material of the mill and media must be selected. The filling consists of approximately 1/3 of the sample and 1/3 of the ball charge. The remaining third is a free volume, which is necessary for the movement of the media. The following table gives some recommendations.

FEATURES AND BENEFITS

• High milling efficiency for a product down to <0,1 µm
• Different speed ratios available
• Ball mills from 50 ml to 500 ml in different materials
• Suitable for long tests and continuous use
• Reversible automatic steering to avoid material buildup
• Programmable milling parameters

Planetary ball mill vessels are constructed from a single piece of the specified material. The advantages of the vessels are:

• Easy opening according to the aperture between the rim and the grinder
• Easy self-centering ball mill base
• Hermetic seal to avoid gas and dust contamination

• • SPECIFICATIONS
    

    Power and voltage	220 V AC – 50 Hz – 250 W
    Operating principle	Impact / Friction
    Operation mode	2 or 4 grinding stations simultaneously
    Vacuum grinding option	Yes
    Grinding ball size	⌀ 5, ⌀8, ⌀10, ⌀12, ⌀15 mm
    Max. capacity	2/3 of the container (including balls)
    Maximum particle size	Fragile materials <10 mm Rest < 4 mm
    Discharge particle size	Up to 0.1 µm
    Speed control	Yes
    Time control	Yes
    Reverse rotation	Yes
    Programmable method	Yes
    Max. noise	60 dB
    Dimensions, cm	77x47x57
    Weight, kg	93 kg without vessels

You can request the following technical documents at info@ipsilonlabs.com:

• User manual in English
• CE conformity marking