Method and apparatus for combined grinding of at least two materials of differing grindability
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United States of America Patent
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Oct 14, 1997
Grant Date -
N/A
app pub date -
Nov 13, 1995
filing date -
Dec 7, 1994
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The invention relates to a method as well as to apparatus for combined grinding of at least two materials of differing grindability, such as clinker and limestone, wherein the material which is more difficult to grind is pre-crushed to a Blaine fineness of grinding of at least 700 cm.sup.2 /g and there-after is further ground together with the other material to produce the finished material.
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