sludge

For pre grinding of the clots, all sample has been ground with our Jaw Crusher PULVERISETTE 1 Model I. After a total of 2 minutes, the complete amount of 270 g has been ground to < 8 mm (length)

A grinding of higher amounts is still possible.

For a proper sampling of 25 g of sludge (from 270 g of original sample), we recommend using a Rotary Cone Sample Divider LABORETTE 27 to minimize error rate in further analysis.

Usually 50 % of sample use to show a diameter, half of the trapezoidal openings of the used sieve ring (with 0,2 mm sieve ring: d50 < 0,1 mm is expected to be found).

The 25 g of sample have been ground within 1 minute. About 50 % of the openings of the sieve rings use to be closed with sample. Probably 30-35 g of sample can be ground, before the sieve ring needs to be cleaned.

Probably the grinding result can be improved, when sample will be (freeze) dried first.