2012年（464）
分类： Delphi
2012-05-04 18:06:05
Artificial aggregate system Shatuo Hydropower Station Process characteristics
according to the lithological characteristics of the Shatuo Hydropower Station
gravel material sources, using semi-dry sand process system process design, the
system processes the following features: (1) Both ends of the open, intermediate
closed-circuit"artificial sand crushing process. According to the semi-dry sand
"to break instead of grinding technology characteristics, the use of artificial
sand open at both ends, the middle of closed-circuit crushing process, the
primary crushing plant and the ultra-crushing plant (high-speed vertical shaft
crusher) open circuit production, broken workshop and crushing workshop
closed-circuit production.
(2) Rough broken, broken in a crusher. Hydropower
leech Shatuo Bay Stockyard source material characteristics, the primary crushing
selected NP1313 crusher Metso Minerals, broken selected 2 NP1213 and NP1110-type
crusher.
(3) Vertical shaft crusher and high-speed vertical shaft crusher
sand making process. The system uses low-speed vertical shaft crusher and
high-speed vertical shaft crusher sand making process, the crushing workshop of
the vertical shaft to break the particle size of 3 ~ 40mm aggregate crushing,
the compound of 3 ~ 5mm aggregate high-speed broken into the ultra-crushing
workshop , ultra-crushing workshop uses open mode of production, a compound of
the material and the crushing workshop <3mm sand mixed, the finished mixed
sand is transported tape machine into the finished sand positions.
Geological
conditions of the source material is as follows: Mao port the group O1h thick
layer, thick layer of limestone, containing a small amount of chert nodules and
bands; the O1t formation in the thick dolomitic limestone, containing a small
amount of flint clumps; rock wet compressive strength for 90 ~ 110MPa; attitude
of rocks N50 ° E, the NW ∠ 7 ° ~ 30 ° W, NE ∠ 10 °;, including f1, f2 two faults
within the collected material; sandwich there J4, nodular marl mudstone thick
1.8m; fractured two groups, mainly calcite vein cement; dissolution depth of
about 8m, the depth of weak weathered quite strongly corroded the bottom.
The
aggregate crushing process: coarse broken workshop. Primary crushing plant
selected the NP1313 type crusher and three B13,-56-2V bar strip feeding machine,
the design of the crusher discharge opening opening is 150mm bars form the
feeder barsspacing b = 150mm, workshop design conditions handling capacity of
1500t / h; the stockyard blasting control the particle size D ≤ 800mm, design
conditions coarse crushing the material the maximum diameter of 250mm broken
than i1 = 3.2.
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