| 摘要 |
A process for treating ore or ore concentrate includes introducing particulate ore or ore concentrate and a carrier gas at a low elevation into a substantially vertically extending treatment zone such that the ore or ore concentrate particles are entrained in the carrier gas, thereby carrying the particles upwards through the treatment zone to a high elevation where they are removed from the treatment zone together with the carrier gas. The particles are roasted or treated at elevated temperature while they are moving upwards through the treatment zone. |
