Mine backfill
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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-
Aug 13, 2002
Grant Date -
N/A
app pub date -
Jun 19, 2000
filing date -
Jun 19, 2000
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Backfill for a mine contains a main component of conventional backfill material and a flow enhancing superfine material component mixed with the main component. The superfine material component may be a clay, for example, and has a particle size of less than 1 micron. The superfine component is present in an amount of about 0.5 to 1% by weight to best achieve improved flow without plugging in a pipeline.
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