Vertical shaft impact crusher and operating method therefor
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United States of America Patent
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Jun 17, 1997
Grant Date -
N/A
app pub date -
Apr 10, 1995
filing date -
Apr 12, 1994
priority date (Note) -
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Abstract
A combination of anvils in a vertical shaft-type impact crusher with deadstock spaces enables the extension of life of the tips mounted on a rotor. A combination of hard tips with softer tips overcomes the inconsistency in which the hard tips that are prone to wear by chipping but are erosive resistant to collision with stones of a large grain size accelerated by the rotor, while the softer tips are resistant to chipping-wear but are ordinarily prone to erode by collision with stones of a smaller grain size accelerated by the rotor. Crushers having anvils and dead stock spaces, have pairs of symmetrically arranged hard tips and softer tips mounted on a reversibly rotatable rotor. The pairs of tips are located in symmetry with respect to each of a number of angularly related centerlines extending radially from the rotational axis of the rotor.
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