| 摘要 |
The machine comprises a tank (1) with, towards its bottom (7), a rotary horizontal plate (11) equipped with perforations and raised means in the form of grooves, preferably with a rectangular or square cross-section, preferably in the shape of concentric circular arcs, with radial grooves per section. The lateral edge of the tank is coated with plates (12) which also have grooved reliefs (21). <IMAGE>
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