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sea shell

Protocol number:	M090032
Industry:	Chemistry
Feed Size:	<10mm
Desired Fineness:	d50 <0,3µm

Result 1

	Planetary Micro Mill PULVERISETTE 7 premium line speed: 700 rpm
Equipment:	45 ml Zirconium oxide (ZrO2) + 7x15 mm ZrO2-balls.
Feed quantity:	10 g*1
Feed Size:	<10 mm*1
Grinding time:	30 min*2
Final fineness:	<20 µm*3 d50 <1,4 µm
Comments:	1: after precrushing by hand to a size < 10mm. 2: After 8min the sample stick and we added 12ml of water for further wet grinding! *3:see result with our Laser-Particle-Sizer ANALYSETTE 22 -NanoTec on sep. page. After 30min we have change the 15mm balls with 70g x1mm ZrO2-balls (see nr.1b)
Download:	090032_shells_P7PL30min.pdf

Result 2

	Planetary Micro Mill PULVERISETTE 7 premium line speed: 1100 rpm
Equipment:	45 ml Zirconium oxide (ZrO2) + 70g x1 mm ZrO2-balls.
Feed quantity:	10 g
Feed Size:	<20 µm (see 1a)
Additive:	+ 5ml water (total 17ml)
Grinding time:	2 h
Final fineness:	d50 <0,33 µm*1 d90 < 0,71 µm
Comments:	*1: see result with our Laser-Particle-Sizer ANALYSETTE 22 -NanoTec on sep. page.
Download:	090032_Shells_P7_2h.pdf

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