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Electrical grade magnesium oxide

Specified value: 40~325 mesh mixed particles -325 mesh: ≤15.00%
Measured value: 45~325 mesh mixed particles -325 mesh: 13.60%
Availability:
Quantity:
  • 2519909100

Product Description

1、Chemical composition (composition of fused magnesia)

Ingredient

SiO2

Al2O3

Fe2O3

CaO

MgO

Specified value

≤2.0

≤0.5

≤0.5

≤1.2

≥97.0

Measured value(%)

1.30

0.37

0.43

0.90

97.0

2、Physical index1. Particle size distribution:Specified value: 40~325 mesh mixed particles -325 mesh: ≤15.00%

Measured value: 45~325 mesh mixed particles -325 mesh: 13.00%

2. Vibration density:

Specified value: ≥2.30g/cm3

Measured value: 2.38g/cm3

3. Flow rate: (natural flow value of 100g material in 4# Ford Cup)

Specified value: ≤45s

Found value: 45s

3、Electrical performance (straight tube SUS304 φ8 L heating = 450mm surface load 7W/cm2 dry burning until the leakage current value is stable)


Status

Normal

Tidal statu

Hot statu

Project

Insulation resistance  (ΜΩ)

Withstand voltage

(V/0.5mA▪s)

Insulation resistance

(ΜΩ)

Withstand voltage

(V/0.5mA▪s)

Leakage current

(μA)

Insulation resistance

(ΜΩ)

Specified value

≥1000

2000 passed

≥1000

2000  passed

≤200

≥2

Measured value

2500 passed

Return to ∞ after soaking in the nozzle for 12 hours

2500 passed

180

2.8

2500 passed

Return to ∞ after soaking in the nozzle for 12 hours

2500 passed

175

3.0


4、Tube surface temperature

Specified value: ≥650℃

Found value: 710℃










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