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Na-Montmorillonite

Protocol number:	M080271
Industry:	Geology / mineralogy
Feed Size:	<30µm
Desired Fineness:	d50<0,5µm
Quantity:	5g
Recommendation:	We recommend using a Planetary Mill like Planetary Mono Mill PULVERISETTE 6 classic line. For a better endfineness, also Planetary Micro Mill PULVERISETTE 7 premium line can be used for grinding.

Result 1

	Planetary Mono Mill PULVERISETTE 6 classic line main disk speed: 650 rpm
Equipment:	80 ml grinding bowl made of zirconium oxide (ZrO2) +110g of 1 mm Ø ZrO2 grinding balls
Feed quantity:	5 g
Feed Size:	<30 µm
Additive:	+ 30ml water
Grinding time:	120 min
Final fineness:	d50<0,5 µm
Comments:	To avoid overpressure, we ground the sample in steps of 5 minutes, followed by a programmed pausing time of 10 minutes. After several cycles, the outside temperature of the bowl should be checked (remain below 80°C); grinding time or programmed pausing time might be readjusted afterwards. Fineness has been checked with our Laser Particle Sizer ANALYSETTE 22 NanoTec. Result after 30min: d50<1,3µm ; d90<2,9µm Result after 60min: d50<0,75µm ; d90<2,1µm Result after 120min: d50 < 0,5µm; d90 < 1,5µm Desired endfineness has been reached after a total grinding time of 120 minutes. A better endfineness can be achieved by grinding the sample with the Planetary Micro Mill PULVERISETTE 7 premium line (with up to 1100 rpm).