| 摘要 |
<p>Raw papermaking materials are suspended and contaminants are removed in this new pulping process for waste paper. A disintegrator breaks down the raw material (P) mechanically, mixing it with water (W) to a dry matter content no less than 8%. This is then diluted below 8% with additional water. The suspension (S) is then emptied into screening equipment (2). Here it is rotated, and contaminants (R) concentrate in the central region. Purified suspension is extracted through the screen (3). Originality rests in continuous concentrated contaminant (R1) extraction from the central region, supplying it to a straining unit (4). Extraction commences during the emptying stage.</p> |
