| 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 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> |
