Importance

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Abstract

An enclosure for slag pelletizers, and a method of operating such an enclosure, that minimizes the escape into the ambient atmosphere of airborne fibres produced by the pelletization process, while permitting the necessary free passage of the steam and gases that are also produced. The enclosure roof consists of at least one layer of wire mesh and a system of overlapping baffles is provided beneath the roof at least above the pelletizer to intercept the particulate material, so that the pellets do not disrupt a blanket of the fibre which is allowed to accumulate on the wire mesh to facilitate removal of the remainder of the fibre from the air stream. The method allows the deposition of an effective blanket, while preventing the deposition of too much fibre, so that the gas stream is diverted and flows out of the open end of the enclosure. A first plurality of water-mist producing nozzles is disposed between the mesh roof and the baffles, while a second plurality is disposed above the mesh roof both delivering a fine mist of water to wet fine particulate, causing it to deposit. A plurality of water-jet producing nozzles are disposed above the roof and delivers jets of water to wash the deposited particulate from the roof and baffle system down into the enclosure interior as and when required.

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First Claim