Canadian Metallurgical Quarterly,
Journal Year:
2024,
Volume and Issue:
unknown, P. 1 - 12
Published: Aug. 28, 2024
In
this
paper,
COMSOL
Multiphysics
software
is
used
to
carry
out
simulations
visualise
the
distribution
of
acoustic
field
and
sound
pressure
in
reaction
cavity
for
different
ultrasonic
frequencies,
powers,
shapes,
horn
diameters
action
depths.
The
results
indicate
frequency
affects
uniformity
distribution,
power
magnitude
sonic
pressure.
Taking
into
account
that
not
less
than
cavitation
threshold,
evenly
distributed,
it
energy-saving
environment-friendly.
optimal
simulation
conditions
are
obtained.
a
500
mL
cylindrical
chamber,
25
kHz
130
W,
respectively.
diameter
34
mm,
depth
30
mm.
Under
these
conditions,
maximum
reaches
1.08
×
106
Pa.
Green Chemistry,
Journal Year:
2023,
Volume and Issue:
25(17), P. 6652 - 6665
Published: Jan. 1, 2023
A
breakthrough
method
is
proposed
for
stepwise
recovering
valuable
metals
from
spent
entire
lithium-ion
batteries.
In-situ
thermal
reduction
combined
with
ultrasonic-assisted
water
leaching
can
be
used
to
efficiently
and
selectively
recover
lithium.
Ultrasonics Sonochemistry,
Journal Year:
2024,
Volume and Issue:
102, P. 106758 - 106758
Published: Jan. 1, 2024
Clean
and
efficient
extraction
separation
of
precious
metals
from
discarded
Pb-Sn
alloy
is
critical
to
the
sustainable
utilization
solid
waste
resources.
Dense
oxide
layer
compact
texture
in
pose
challenges
effective
leaching
process.
Ultrasonic
waves
are
demonstrated
improve
efficiency
via
favorable
physical
chemical
effects
solution
system.
In
this
study,
ultrasound-assisted
technology
attempted
rapidly
selectively
extract
Pb
alloy,
gives
emphasis
on
ultrasonic
electrochemical
behaviors.
The
Eh-pH
diagrams
Sn-H2O
Pb-H2O
systems
were
firstly
analyzed
lay
selective
dissolution
foundation.
It's
indicated
that
oxidizing
HNO3
lixiviant
suitable
realize
Pb.
Both
Sn
can
be
dissolved
ionic
Sn2+
Pb2+
solution.
However,
oxidizes
Sn4+
further
hydrolyzes
insoluble
SnO2,
which
will
agglomerate
unreacted
materials
limit
internal
metal
conventional
Due
vibratory
stripping
by
effect
ultrasound,
acid
time
for
halved
with
ultrasound
assistance.
About
99.12
%
only
0.1
under
following
optimal
parameters:
0.5
mol/L
HNO3,
temperature
80
°C,
30
min,
liquid-to-solid
ratio
20
mL/g,
intensity
0.52
W/cm2.
Leaching
kinetics
Pb,
phase
transition,
microstructure
evolution,
galvanic
corrosion
polarization
curve
studied
determine
enhanced
mechanism.
Notably,
form
a
microcorrosion
cell
acts
as
cathode
protected
while
undergoes
intensifying
anode
giving
rise
higher
efficiency.
Eventually,
it's
suggested
extracted
separated
during
process
effects,
especially
sonochemistry
aspect
intensified
spot
corrosion.
proposed
work
applicable
valuable
various
alloys
through
method.
