| 摘要 |
Improved extrusion apparatus is shown for the preparation of a rod-like body from a coal-containing particulate mixture. Control means are disclosed for manually or automatically infinitely adjusting the length, within a preselected range, of the consolidating coal-containing mixture in contact with the surface of the die in response to selected parameters. In the preferred embodiment the operative length of the die may be varied by the control means.
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