| 摘要 |
<p>Blast furnace shaft has a cooled, refractory lining of armour with a heat conductivity lower reaction temp. product is not 4000 k.cals/m.h. The lower reaction temp. is that at which the wear-and-tear speed of the refractory lining under chemical stress could be close to O. Pref. the heat conductivity of the lining is >=13, and, more specifically, >20 k.cal/m.h. degrees C and/or there is a lower reaction temp. is not 800 degrees C or 600 degrees C. Double-walled armour-plate may be used for the cooling elements, coolant flowing in between.</p> |
