| 摘要 |
The invention provides a method of treatment of materials (2), particularly suited for treating filters, in which the material passes through a feeding stage to a melting stage, the melting stage forming a volume of molten material (58); the feeding stage extending from a location distant from the melt (58) to a location proximal to the melt, and wherein the percentage of solids per unit volume of the feed material is higher at the location proximal to the melt than at the location distal therefrom. It is particularly preferred that mechanical means (102) are used to increase the percentage solids level of the material as it approaches the melt (58). In this way, off-gassing is filtered by the filter material itself and carried back into the melt. |
