| 摘要 |
<p>An apparatus and method for producing a lightweight building aggregate from waste fly ash material has inputs 11, 12 for respectively receiving dry and conditioned fly ash according to the supply and demand of the material. The fly ash is then mixed in a pelletiser 23 with water from a heater 24, which aids the production of satisfactory pellets. The output of the pelletiser 23 is initially diverted away from further processing by a conveyor 29, so that unsatisfactory pellets produced at start-up are collected and recycled. Finally, a rotary drum 36 serves to prevent oversized pellets from reaching the sinter strand 31, where they may explode or cause unsatisfactory sintering.</p> |
