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limestone (Kalkstein)

Protocol number:	M004047
Industry:	Construction materials, Chemistry, Geology / mineralogy
Feed Size:	<~8mm
Desired Fineness:	<150µm

Result 1

	Planetary Micro Mill PULVERISETTE 7 classic line 700 rpm
Equipment:	45 ml stainless steel 7x15 mm stainless steel
Feed quantity:	20 g
Feed Size:	<~8 mm
Grinding time:	3 min
Final fineness:	<150 µm
Comments:	*1: the sample starts sticking. A longer dry grinding is not possible.

Result 2

	Planetary Micro Mill PULVERISETTE 7 classic line 700 rpm
Equipment:	45 ml stainless steel 7x15 mm stainless steel
Feed quantity:	20 g
Feed Size:	<~8 mm
Additive:	+ water 15ml
Grinding time:	10 min*2
Final fineness:	d50 < 2,5 µm*3 d90 <10,1 µm
Comments:	*3: particle size analysis with our Laser-Particle-Sizer analysette 22-Compact.

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Leos Benes
FRITSCH GmbH - Milling and Sizing

Industriestrasse 8
55743 Idar-Oberstein

Phone +49 67 84 70 122

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