Solid material comminution or disintegration – Apparatus – Rotary striking member with circumferential or tangential flow
Reexamination Certificate
2005-10-18
2005-10-18
Banks, Derris H. (Department: 3725)
Solid material comminution or disintegration
Apparatus
Rotary striking member with circumferential or tangential flow
C241S154000, C241S186200, C241S186400
Reexamination Certificate
active
06955313
ABSTRACT:
The present invention concerns improvements in hammer mills, secondary and tertiary, reversing and not, that allow to resolve problems tied to the shattering of the inert hammers. Through the use of a special device circular of rotation, endowed with blades of interception in equal number to that of the hammers that launches the inert material against the front of the hammers, obtaining the shattering totally to impact, in place of the traditional shattering for crushing between hammers and armours. The surprising resulted obtained include an increase of production from about double to about triple, with an almost complete absence of recycle portions; good polyhedric nature and granulometry, with a drop of about 70% of dust in the obtained product; reduction of usury in the hammers and armour; possibility to produce thin sands, with non attainable speed with traditional mills; an almost complete absence of dust freed during the operation with consequent elimination of environmental impact and guardianship of the health of the employees to jobs.
REFERENCES:
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patent: 5402948 (1995-04-01), Kaczmarek
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Pahng Jason Y.
Wieczorek, Esq. Mark D.
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