Briquetting press

Details Briquetting press Briquetting press

1979-05-10

1981-02-10

Czaja, Donald E.

Plastic article or earthenware shaping or treating: apparatus

Sets of press couples comprising registering female mold...

Mounted on rolls

425367, A21C 300

Patent

active

042498783

ABSTRACT:
Briquetting press rolls are provided for rotation in tangential relationship with respect to each other with unequal peripheral velocities at the point of tangency to impose a shear stress on the briquettes of particulate material being formed in cooperating cavities spaced about the peripheral surfaces of the rolls. In one embodiment, the unequal peripheral velocities are provided by rotating rolls of unequal diameter at the same angular velocity. In an alternative embodiment, rolls of constant diameter are rotated by roll driving means at different angular velocities. In both embodiments, the pitch of the cavity spacings is such to ensure registration and cooperation. The shear stress imposed on the briquettes during formation provides briquettes with greater density and strength.

REFERENCES:
patent: 2687699 (1954-08-01), Oakes
patent: 3255285 (1966-06-01), Chilson
patent: 3969062 (1976-07-01), Komarek
Gregory, H. R., "The Compaction of Powders", Transactions of Inst. of Chem. Engrs., vol. 20, 1962.

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