Electrical grade magnesium oxide
Type MTA
Characteristics
MTA is a medium-high temperature powder with light silicone treatment, mainly used in air heating elements of medium wattage loading, and it is suitable for copper tube and steel tube. It can stand 1050℃ annealing and requires immediate sealing.
Chemical analysis (%)
MgO CaO Al2O3 Fe2O3 SiO2
≥94.0 ≤1.5 ≤0.9 ≤0.5 ≤2.5
Particle distribution
Mesh +40 +60 +80 +140 +200 +325 -325
Dia(um) +425 +250 +180 +106 +75 +45 -45
Quantity(%) 0-0.1 24±6 26±6 26±6 12±3 11±3 5±3
Tap density
2.38±0.04g/cm3
Flow
Ford cup no.3 (φ2.165mm-2.185mm): 145±20 s/100g
Ford cup no.4 (φ3.97mm-4.01mm): 34±3 s/100g
Electrical property
Packing
25 kg in a plastic plaited bag; or 25 kg in a carton and 2 tons on a pallet. Special packing is available on requirement.
Security and storage
Electrical grade magnesium oxide is a non-toxic product, but with some dust. Masks and gloves are proposed to use during operation.
Electrical grade magnesium oxide should be stored in dry places, and are suggested to be used out within 12 months after delivery.
