Materials science forum,
Год журнала:
2024,
Номер
1139, С. 3 - 9
Опубликована: Дек. 18, 2024
This
article
presents
the
optimal
method
of
melting
35XGCL
(analog
is
JIS
G
5111)
low
alloy
steel
in
DSP-2.0
2000
kg
electric
arc
furnace.
All
main
stages
an
furnace
are
considered.
In
addition,
analytical
data
on
study
slag
mode
during
fluidization
presented.
The
results
evaluation
oxygen
activity
metal
depending
chemical
composition
oxidation
and
reduction
cycles
Graphs
total
amount
iron,
silicon,
manganese
oxides
Moreover,
effect
constant
additional
deoxidizing
aluminum
content
impact
strength
improved
when
range
0.05-0.07%.
E3S Web of Conferences,
Год журнала:
2024,
Номер
537, С. 08004 - 08004
Опубликована: Янв. 1, 2024
This
study
offers
a
thorough
comparative
analysis
of
the
life
cycle
assessment
three
significant
energy
storage
technologies—Lithium
Ion
Batteries,
Flow
and
Pumped
Hydro—evaluating
their
environmental,
economic,
social
aspects
in
complete
manner.
When
considering
environmental
effect,
it
is
evident
that
Lithium-Ion
Batteries
surpass
Hydro
terms
carbon
footprint,
water
use,
land
utilization.
exhibit
decreases,
ranging
from
40%
to
60%,
showcasing
potential
as
ecologically
sound
alternatives
with
heightened
sustainability
advantages.
From
an
economic
standpoint,
can
be
confidently
said
both
capital
operational
expenses,
resulting
decreased
Levelized
Cost
Storage
(LCOS).
The
examination
percentage
change
showcases
20%
50%,
underscoring
competitiveness
Hydro.
Regarding
societal
consequences,
propensity
for
job
production,
augmented
community
acceptability,
enhanced
health
safety
records
contrast
Batteries.
assessments
further
underscore
benefits
Hydro,
demonstrating
substantial
increase
100%
creation,
notable
rise
6.25%
12.5%
decrease
50%
75%
problems.
These
results
jointly
emphasize
comprehensive
indicating
sustainable,
cost-effective,
socially
responsible
options.
Given
ongoing
evolution
landscape,
findings
obtained
this
research
greatly
enhance
ability
stakeholders
policymakers
make
well-informed
decisions
efforts
design
more
environmentally
friendly
robust
future.
emphasizes
significance
taking
into
account
not
only
technological
efficacy,
but
also
wider
circumstances
when
implementing
technology.
iPolytech Journal,
Год журнала:
2024,
Номер
28(3), С. 547 - 561
Опубликована: Окт. 5, 2024
In
this
work,
we
aim
to
establish
the
main
regularities
of
hydrothermal
precipitation
copper
from
previously
unstudied
sulfuric-nitric
acid
and
sulfate
solutions
atmospheric
autoclave
processing
metallurgical
dusts.
Pyrite
was
used
as
a
sulfidizer.
The
elemental
composition
products
determined
by
X-ray
fluorescence,
inductively
coupled
plasma
atomic
emission
spectrometry,
absorption
analysis.
It
found
that
proposed
technology
enables
its
recovery
at
level
more
than
95%.
For
with
high
arsenic
concentration,
two-stage
scheme
oxidation-hydrothermal
treatment
following
parameters
proposed:
temperature
180°С,
duration
2
h,
oxygen
consumption
0.026
dm
3
/g
pyrite
(for
1st
stage),
200°С
h
2nd
stage).
Extraction
in
cake
amounted
95.4%
(in
form
Cu
S)
91.4%
FeAsO
4
),
which
allowed
further
separation
these
metals
flotation.
An
Cu–Zn–Fe–As–NO
solution
presence
180–220°С
produced
activation
energy
values
(kJ/mol)
corresponding
kinetic
regime
calculated
two
methods:
64.6
conventional
method
60.5
shrinking
core
model.
CuSO
–H
SO
–FeS
O
CuNO
systems
were
also
determined.
Flotation
enrichment
shown
result
degree
As
separation,
amounting
˃
95%
˂
5%.
Precious
contained
are
transferred
flotation
concentrate
92.7%
(Au)
96.5%
(Ag).
resulting
comprised
(%):
12
Cu;
37
Fe;
38
S;
13
other
elements.
is
that,
order
obtain
product
required
content
copper,
should
be
separated
into
concentrates
followed
an
additional
primary
alkaline
medium
lime.
Hence,
our
study
has
established
