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china clay (moistened)

Protocol number:	M0097331
Industry:	Geology / mineralogy
Feed Size:	3 cm
Desired Fineness:	< 8 mm
Quantity:	2 kg
Recommendation:	For a coarse comminution of higher amounts of clay, the Jaw Crusher PULVERISETTE 1 Model I is suitable. If the sample could be dried previously, much faster output could be achieved.

Result 1

	Jaw Crusher PULVERISETTE 1 classic line Model I gap position: 1,0 (smallest gap)
Equipment:	crushing jaws made of hardened tool steel
Material attributes:	moistened material
Feed quantity:	2 kg
Feed Size:	3 cm
Grinding time:	40 min
Final fineness:	< 8 mm
Comments:	Because of its high moisture content, the sample becomes kneaded during grinding and the output of small ground fragments use to be quite low. The moisture content also causes a sticking of sample at the lower end of the crushing jaws, for this, a couple of grams still remains inside of the grinding chamber after a total grinding time of 40 minutes. By using the Jaw Crusher PULVERISETTE 1 Model II with its wider grinding chamber, we are guessing that it might take about 25-30 minutes to grinding the complete sample of 2 kg. Several other kinds of clay samples have shown, that dry material is way faster to grind. We recommend a pre drying of sample before grinding with a jaw crusher.