Electrical grade magnesium oxide

Type  HC-1

Characteristics

HC-1 is a C-level product of high temperature MgO powder, mainly used in air heating elements of medium or low wattage loading . It can stand 1050℃ annealing and requires immediate sealing.

Chemical analysis (%)

MgO              CaO               Al2O3             Fe2O3             SiO2

≥94.0           ≤2.5             ≤0.9             ≤0.70           ≤2.5

Particle distribution (%)

Mesh                  +40         +60         +80         +140       +200       +325       -325

Dia(μm)          +425       +250       +180       +106       +75         +45         -45

Quantity(%)       0     24±6   26±6   26±6   12±3  11±3    5±3

Tap density

2.32.34±0.04g/cm3 

Flow

Ford cup no.3 (φ2.165mm-2.185mm):              180±20 s/100g

Ford cup no.4 (φ3.97mm-4.01mm):   34±3 s/100g

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.