Method for surface treatment of solid particles and apparatus th

Details Method for surface treatment of solid particles and apparatus th Method for surface treatment of solid particles and apparatus th

1994-09-07

1996-05-14

Pal, Asok

Coating processes

Solid particles or fibers applied

427185, 427201, 427213, B05D 112

Patent

active

055165508

ABSTRACT:
A continuous method for the surface treatment of solid particles comprises feeding a powder mixture which consists of solid particles of a given substance and solid particles of another substance into one of a plurality of impact chambers in communication with one another and equipped with a rotating disc having impact pins and also with an impingement ring, subjecting the mixture to an impact striking action, separating an air stream produced by that action from the powder mixture and discharging it continuously from the impact chamber, repeating the impact action while allowing the powder mixture to reside temporarily in the impact chamber, and then causing the mixture to move, in succession, to the next chamber and so forth. An apparatus for the surface treatment comprises a plurality of rotating discs each fitted with a plurality of impact pins, a shaft on which the discs are fixedly mounted in spaced relationship, an impingement ring surrounding the discs to form an impact space, and partition plates disposed between the rotating discs to define a plurality of impact chambers, each partition plate being formed with a passageway close to the shaft to establish communication between the two adjacent impact chambers that it partitions.

REFERENCES:
patent: 4915987 (1990-04-01), Nara et al.

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