Method for forming homogeneous blends of particulate materials

Details Method for forming homogeneous blends of particulate materials Method for forming homogeneous blends of particulate materials

1988-11-16

1990-04-17

Thurlow, Jeffery

Plastic and nonmetallic article shaping or treating: processes

Formation of solid particulate material directly from molten...

Utilizing centrifugal force or rotating forming zone

241 23, 241DIG37, 264 28, 264140, 2641761, 523309, 528481, B29B 902

Patent

active

049178342

ABSTRACT:
A mixture of unlike particulate solids is dispersed in liquid nitrogen to form a slurry. The slurry is then subjected to shear and impact forces of sufficient intensity and duration to break up agglomerates, to comminute at least the larger particles, and to obtain a randomly mixed homogeneous suspension. The suspension is thereafter stabilized by removal of liquid nitrogen to form a past or powder which may be further processed into shapes by extrusion or molding. One preferred embodiment utilizes a batch-to-continuous process for the compounding of rubber with carbon black and other additives.

REFERENCES:
patent: 2735624 (1956-02-01), Beck
patent: 2836368 (1958-05-01), McCoy
patent: 3172546 (1965-03-01), Schreiner
patent: 3692759 (1972-09-01), Ocone
patent: 3992350 (1976-11-01), Bensa et al.
patent: 4474905 (1984-10-01), Hadermann et al.
patent: 4493806 (1985-01-01), Hatzikelis et al.
Tekmar Company, "Select the Rotor-Stator Generator That's Right for Your Job", p. 23 (Mar. 1986).

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