| 摘要 |
<p>A process for firing a granular mineral material, especially limestone or dolomite, comprises using a shaft furnace (3) with two shaft sections (1,2) connected by an over flow channel (19). The material is supplied to the exhaust gas shaft (2) during firing, and the exhaust gases are drawn off so the pressure near the filling opening is reduced to atmospheric pressure, preventing flow of exhaust gas via the filling opening.</p> |
