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US 6,656,525 B2Granted
Bulk material liquid addition apparatus and method
OwnerTodd A. Raeinventor
Life of this patent
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Abstract
Apparatus and method for applying liquid coating to pellets in a flowing feed stream are provided. An incoming bulk material feed is conditioned to produce a ribbon-like agglomerated flow pattern, and the bulk material is passed through a first spray section which coats an exposed surface of the pellets flowing therethrough. The flow direction is reversed in a second spray station, which operates to expose an opposite surface of the pellets, such that the second spray section coats substantially the remainder of the outer surface of the pellets.
Claims13
A method for applying a liquid coating to a flowing bulk material feed stream, comprising:
- conditioning an incoming bulk material feed stream to produce a substantially ribbon-like aggregation flow pattern;
- introducing said conditioned bulk material feed stream traveling in a first direction into a first spray section having a first concave wall surface which reverses a flow direction to a second direction opposite said first direction;
- applying, in said first spray section, a liquid coating to an exposed surface of said bulk material feed stream;
- directing said bulk material feed stream from said first spray section into a second spray section having a second concave wall surface being concave in a direction opposite that of said first concave wall section,
- reversing, on said second wall surface, said flow direction to said first direction,
- applying, in said second spray section, a liquid coating to an exposed surface of said bulk material feed stream.
3 more elements
Dependencies are inferred from the claim text.