SUPER FINE


Elements Method Specifications Typical value
Total Zinc Calculation ≥ 98.5 % 99 %
Metalic Zinc Gas evolution ≥ 94.0 % 95-96 %
Pb AA (ISO3549) ≤ 0.1 % 0.03 %
Cd AA (ISO3549) ≤ 0.04 % 0.01 %
Fe AA (ISO3549) ≤ 0.005 % 0.001 %
Others AA (ISO3549) ≤ 0.001 % traces


    Specifications Typical value
Average particle size Fisher sub sieve sizer ASTM B330-07 3.7 - 4.5 4.2
Sauter Mean Diameter (*) Laser diffraction   3.2
Cut off diameter Laser diffraction   25
Sieve residue at 45 m Vacuum sieve ISO 3549 ≤ 0.01 % 0.005 %

(*) SMD or D(3,2) is the diameter of a particle having the same volume to surface area as the total volume to the total surface area of all particles.


      Indicative Values
Oil absorption Spatula rubout ASTM D281 6.5 %
BET N2 adsorption   0.4 m2/g
Bulk density Scott volumeter ASTM B329-06 2.3 g/cm3
Tamped density Engelsmann ISO R/787 4.0 g/cm3