February 2014
Intermediate to advanced
417 pages
14h 51m
English
book
Industrial Air Quality and Ventilation
by Ivan Nikolayevich Logachev, Konstantin Ivanovich Logachev
Content preview from Industrial Air Quality and Ventilation
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239Engineering Solutions for Dust Release Containment and Air Dedusting
© 2010 Taylor & Francis Group, LLC
hS
lS
cH
cH00
2
==
**
,,
/ctg ctg
ϕϕ
(5.85)
where
ϕ
H
is the angle at which the material hits the moving conveyor belt, accepted
as 75% of the angle of rest [125]. For friable rocks
ϕ
H
=
30
0
, the geometry of the
initial layer may be calculated using formulas:
hS lh
c
00
0
32
3
==
*
/,
. (5.86)
The integral relation (Equation 5.84) would yield
δ =+ −
RhR
(/
)12 1
0
(5.87)
or, at
hR
0
05/,<<
δ =−hhR
00
105(,/).
(5.88)
In view of the calculation for velocities (Equation 5.83), cosines of departure angles
relate as
cos
cos
/,
′
′′
=+
α
α
δ1 R (5.89)
that is,
′
<
′′
α α
.
The cross-section ...
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