Service Hotline
+86-536-7262862
Service Hotline
+86-536-7262862
DZ-3 （25kg/bag、Executive Standard: JB/T 8508-1996 "Electrical grade magnesium oxide"）
1、Chemical composition (composition of fused magnesia)
Ingredient | SiO2 | Al2O3 | Fe2O3 | CaO | MgO |
Specified value | ≤2.0 | ≤0.5 | ≤0.5 | ≤1.0 | ≥97.5 |
Measured value(%) | 1.20 | 0.32 | 0.30 | 0.58 | 97.60 |
2. Physical index
1. Particle size distribution:
Specified value: 40~325 mesh mixed particles -325 mesh: ≤15.00%
Measured value: 45~325 mesh mixed particles -325 mesh: 13.60%
2. Vibration density:
Specified value: ≥2.30g/cm3
Measured value: 2.37g/cm3
3. Flow rate: (natural flow value of 100g material in 4# Ford Cup)
Specified value: ≤45s
Found value: 43s
3、electrical performance (straight tube SUS304 φ8 L heating = 800mm surface load 6.2W/cm2 dry burning until the leakage current value is stable)
Status | Normal | Tidal state | Hot state | |||
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 | ≤350 | ≥2 |
Measured value | ∞ | 2500 passed | Return to ∞ after soaking in the nozzle for 12 hours | 2500 passed | Stable 110 | 3.5 |
∞ | 2500 passed | Recover to 12 hours after soaking in the nozzle | 2500 passed | Stable 115 | 3.0 | |
4、tube surface temperature
Specified value: ≥650℃
Found value: 730℃
Address: Block B, Chenshuo Building, Commercial Street, Hanting District, Weifang City, Shandong
+86-536-7262862
