Rock crusher having crushing-enhancing inserts, method for its production, and method for its use
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United States of America Patent
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Oct 19, 1999
Issued Date -
N/A
app pub date -
Oct 30, 1997
filing date -
Mar 18, 1996
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A rock crusher such as a cone or jaw crusher incorporates hardened tapered inserts in the manganese or other wear liner of at least one of its crushing elements. The inserts extend outwardly from the crushing surface of the crushing element towards the facing crushing surface so as, in use, to act as pick axes that shatter rock primarily by impact rather than pulverizing the rock by compression. The inserts are fixed in a heat treated manganese wear liner either by bonding or by press-fitting. The inserts substantially improve the life of the wear liner and, unexpectedly, 1) produce product of a highly uniform gradation in the desired ranges, 2) consistently produce product with a very high cubicity, 3) dramatically reduce the crusher's power requirements, and 4) significantly increase the crusher's capacity.
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