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Particle size distribution (Granulometry)

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Description of key information

Nickel iron chromite black spinel: MMAD1=4.09µm, P1=0.2 ; MMAD2=40.84µm, P2=0.8; GSD1=1.91, GSD2=2.09
Nickel iron chromite black spinel: D50 = 2.9 µm

Additional information

Total Dustiness (airborne fraction): 41.43mg/g (experimental results, DMT Report).

Mass median aerodynamic diamater of airborne fraction: MMAD1=4.09µm, P1=0.2 ; MMAD2=40.84µm, P2=0.8; GSD1=1.91; GSD2=2.09

Fractional deposition in human respiratory tract (MPPD model, based on calculated MMAD):

Head (ET): 44.1%

Tracheobronchial (TB): 0.6%

Pulmonary (PU): 1.4%

Particle size analysis by laser diffraction

d50 = 2.9 µm

d90 = 10.0 µm

d10 = 1.2 µm

(All values were calculated assuming that the particles are spherical)