Granulation method

Details Granulation method Granulation method

1997-11-10

2000-01-11

Silbaugh, Jan H.

Plastic and nonmetallic article shaping or treating: processes

Recycling of reclaimed or purified process material

Of excess solid particulate

264113, 264117, 264122, 23313P, B29B 908

Patent

active

060132094

ABSTRACT:
An apparatus and method for uniform granulation is disclosed. The method involves the use of an initial feedstock having particle size of -150 mesh and 90% or greater particle size of 200 mesh. The feedstock may be contacted in a pan granulator which includes a minor amount of nucleating material of about -35 mesh. Binder is introduced into the pan granulator to progressively layer the feedstock material onto the nucleating to form a final product having a size distribution -8 mesh to +4 mesh. The method is designed to be interruptible and is particularly useful for forming granules having a plurality of layers of differing material. The method has marked improvement over the prior art methods since a particularly fine granule can be formed in a relatively expedient process to result in a granule having high commercial value and high break strength. These factors are achievable in addition to 100% product usage with no waste.

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