Artifical grate electrodes is made of high-quality low ash materials,like the petroleum coke,needle coke and coal pitch.After experiencing calcinations,burdening,kneading,forming,baking and pressure impregnation,it is gratized in a hign temperature of over 3000â, And then treated with kind of product is widely used for electric arc steel-making,yellow srus,indusreial silicon,other alloys and non-metallic materials of electric atc furnace. this product is characterized by low resistivity,good electrical conductivity,low ash,even and compact structure,good antioxidation and high mechanical strength
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Project | Nominal diameter /mm | |||||
300-400 | 450-500 | 550-650 | ||||
Resistivity / | μΩ·m | ⦠| Electrode | 6.2 | 6.3 | 6 |
Joint | 5.3 | 5.3 | 4.5 | |||
Flexural strength / | Mpa | ⧠| Electrode | 10.5 | 10.5 | 10 |
Joint | 20 | 20 | 22 | |||
Elastic modulus / | Gpa | ⦠| Electrode | 14 | 14 | 14 |
Joint | 20 | 20 | 22 | |||
Bulk density / | g/cm3 | ⧠| Electrode | 1.67 | 1.66 | 1.66 |
Joint | 1.74 | 1.75 | 1.78 | |||
Thermal expansion coeffi | 10-6/â | ⦠| Electrode | 1.5 | 1.5 | 1.5 |
cient / | Joint | 1.4 | 1.4 | 1.3 | ||
Ash / % | ã | ⦠| ã | 0.5 | 0.5 | 0.5 |
Size and permissble variation of Grate Electrode
Nominal | Actual diameter | Nominal length | Actual | ã | |||
diameter | length | ||||||
ã | Maxmum | Minmal | Black part is the | Allow | Short feet | ||
ã | smallest | deviation | |||||
Inches | mm | ||||||
10 | 250 | 256 | 251 | 248 |
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