Drying Apparatus And Associated Drying Process

Abstract: The present invention provides a drying apparatus (1). The apparatus includes a first upper chamber (3) comprising a freezing section; and a second lower chamber (5) comprising a thawing section and a drying section. The first upper chamber (3) further includes an inlet (25) and first conveying means (7 71) arranged to convey material through and within the freezing section. The second lower chamber (5) includes second conveying means (9 9) arranged to convey material through and within the thawing section and third conveying means (15) arranged to convey material through and within the drying section. A first outlet is provided in the drying section through which dried material exits the apparatus. Generally the material provided to be dried by the drying apparatus is alum sludge.

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