Product grade | WO3 content (%)≥ | Calcination loss (%)< | The impurity content is not more than (%) < | ||||||||||||||
Sodium hydroxide insoluble matter | Chloride | Sulfate | Fe | Ca | Mo | Al | P | Bulk density (g/cm3) | Fisher particle size (Fsss.)u | Mesh (mesh) 100% | |||||||
FPWO-1 | 99.95 | 0.5 | 0.005 | 0.003 | 0,01 | 0.001 | 0.0015 | 0.002 | 0.0005 | 0.0007 | 2~2.8 | 7~16 | |||||
FPWO-2 | 99.5 | 0.5 | 0.005 | 0.003 | 0.01 | 0.04 | 0.010 | 0.03 | 0.0010 | 0.004 | 0.6~1.0 | 0.6~1.5 |