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Particle size distribution (Granulometry)

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Reference
Endpoint:
particle size distribution (granulometry)
Type of information:
experimental study
Adequacy of study:
key study
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
test procedure in accordance with generally accepted scientific standards and described in sufficient detail
Qualifier:
according to
Guideline:
other: ASTM E323-09 standard specification for perforated plate sieves for testing purposes
GLP compliance:
not specified
Type of method:
sieving
Type of distribution:
volumetric distribution
Percentile:
D50
Mean:
23 µm
Remarks on result:
other: Standard deviation not specified
Percentile:
other: D80
Mean:
63 µm
Remarks on result:
other: Standard deviation not specified

Particle size distribution of sample (see also figure attached)

Size

 

Retained

 

mesh

 mm

g

%

20

0.841

0.01

0.01

30

0.595

0.02

0.03

40

0.42

0.01

0.01

50

0.297

0.05

0.07

100

0.149

1.62

2.31

140

0.105

2.44

3.48

200

0.075

5.60

7.98

325

0.045

11.29

16.09

 

0.02

16.32

23.26

 

-0.02

32.80

46.75

Sum

 

70.16

100.00

Conclusions:
test done according to standard protocol, useful to assess the characteristic of the substance
Executive summary:

The particle size of the substance was determined by sieving.

The D50 of the substance is 23 µm, the D80 is 63 µm.

Description of key information

The D50 of the substance is 23 µm, the D80 is 63 µm (Outotec, 2010).

Additional information

Various types of leach residues were analyzed. They display differences in phys-chem. properties depending on their chemical composition. The most representative leach residue was used.