Magnesium oxide electrical grade

According to various electrical performance requirements, it can be divided into four levels of specifications and models. It is suitable for the production of different high-temperature air-firing electric heating elements. It can withstand the highest air-firing temperature of 800℃, but is not suitable for high-temperature heat treatment (such as annealing at 1050℃).

Suitable for: water heater tube, oven tube, mosquito coil tube and other medium power and high rate load medium heaters.

Chemical composition and physical index
Name/IndexMgO(%)≥CaO(%)≤Al2O3(%)≤Fe2O3(%)≤SiO2(%)≤IOL≤
DS-M99710.90.51.50.15
DS-M8961.50.90.520.15
DS-M79520.90.52.50.20
DS-M6942.50.90.53.50.25


Mesh distribution
mesh+40+60+80+140+200+325-325
Particle size(μm)+425+250+180+106+75+45-45
Content(%)≤0.526±625±625±612±311±35±3

Note: The content of + 425μm and -45μm will be strictly controlled within the specified range. In order to obtain the desired vibration and flow rate, the content of other mesh may exceed the above range. (Special requirements, can be produced according to customer needs)

Flow pattern and vibrational density
Tap density T.D.(g/cm³):2.30-2.45Velocity(F.T. s/100g):40±6 Flow rate(F.R. s/100g): 175±25