Sustainability,
Год журнала:
2024,
Номер
16(24), С. 11268 - 11268
Опубликована: Дек. 23, 2024
Decarbonizing
the
iron
and
steelmaking
industry
is
critical
for
China
to
pursue
net-zero
emissions
target
advance
sustainable
industrialization
(SDG
9).
This
paper
addresses
urgent
need
decarbonization
strategies
in
this
sector,
aiming
align
with
China’s
carbon
neutrality
goals
by
2060.
By
reviewing
current
technological
advancements
potential
pathways
deep
decarbonization,
including
process
optimization,
hydrogen-based
direct
reduction,
capture,
utilization,
storage
(CCUS),
these
technologies
are
categorized
into
six
strategic
approaches:
systemic
energy
efficiency
improvement,
resource
recycling,
optimization
innovation,
breakthrough
smelting,
product
iterative
upgrading,
CCUS.
These
also
SDG
13
(climate
action)
reducing
greenhouse
gas
7
(affordable
clean
energy)
through
promotion
of
technologies.
evaluated
their
emission
reduction
maturity.
The
results
indicate
that,
while
improvements
recycling
currently
most
mature
widely
implemented
strategy,
significant
breakthroughs
hydrogen
metallurgy
CCUS
essential
achieving
long-term
neutrality.
Based
on
an
analysis,
a
comprehensive
roadmap
proposed,
detailing
near-term
actions
required
industry’s
transition.
focus
(up
2030)
should
be
enhancing
whereas
mid-term
(2030–2050)
emphasize
adoption
2050–2060
period,
achieve
widespread
commercialization
smelting
CCUS,
ensuring
achievement
study
intends
provide
systematic
framework
recommendations
policymakers
stakeholders
guide
addressing
both
economic
challenges
low-carbon
development.
Metals,
Год журнала:
2024,
Номер
14(4), С. 426 - 426
Опубликована: Апрель 4, 2024
Experimental
investigations
of
the
effectiveness
pretreatment
acid
leaching
process
a
representative
sample
electric
arc
furnace
dust
(EAF
dust)
and
characterization
were
performed.
As
EAF
is
globally
defined
as
hazardous
solid
industrial
waste,
it
contains
high
percentage
zinc
other
useful
components,
in
this
paper,
application
will
be
carried
out
order
to
increase
efficiency
further
leaching,
all
with
aim
using
secondary
raw
material
for
metal
valorization.
The
involved
simple
distilled
water.
Under
following
optimal
conditions:
time—30
min,
ratio
liquid
phase—1:10,
temperature—ambient,
stirring
speed—500
rpm,
reduction
content
water-soluble
components
was
achieved,
namely,
83%
Cl,
92%
K,
74%
Na,
14%
Cd,
15%
Ca,
19%
F.
enables
significantly
better
filtration
suspension
increases
sulfuric
solution,
compared
direct
dust.
iPolytech Journal,
Год журнала:
2024,
Номер
28(1), С. 178 - 189
Опубликована: Март 30, 2024
The
aim
of
the
work
was
to
study
leaching
kinetics
zinc
from
compound
CaO.
ZnO,
formed
during
sintering
dust
electric
arc
furnaces
with
limestone,
as
well
identify
mechanisms
by
means
which
such
chemical
interactions
occur.
object
sinter
limestone
obtained
at
Chelyabinsk
Zinc
Plant.
It
found
that
is
contained
in
form
readily
soluble
ZnO.
elemental
composition
initial
dusts
and
determined
spectral
atomic
emission
method
using
inductively
coupled
plasma
on
a
Spectroblue
optical
device
spark
spectrometry.
phase
materials
studied
Bruker
D8
Advance
X-ray
diffractometer.
milled
apowder
state
having
particle
size
~0.04
mm
yield
~97%
composition,
%:
11.9
Zn;
28.5
Ca;
16.6
Fe;
0.38
Mg;
0.14
Pb;
0.05
Cl.
Experiments
Zn
NaOH
solution
were
carried
out
following
parameters:
concentration
pulp
0.202
g-ion/dm3
;
alkali
–
5‒9
mol/dm3
NaOH;
L:S
=
9:1;
mixing
rate
10‒20
rad.
c-1;
temperature
333‒363
K;
duration
0.5–2.5
hours.
has
been
shown
passes
into
sodium
tetrahydroxozincate
Na2[Zn(OH)4],
while
calcium
remains
cake,
mainly
insoluble
Ca(OH)2,
reacts
carbon
dioxide
carbonate
CaCO3.
process
dissolving
corresponds
external
diffusion
mode
mutual
transfer
reagents
reaction
products
through
surface
layer
liquid
interface
“liquid–solid”
phases
an
activation
energy
value
equal
12.44
kJ/mol.
Thus,
parameters
solution,
proceeds
mode.
results
are
interest
when
identifying
conditions
corresponding
intradiffusion
kinetic
modes
leaching.
Abstract
ZnO
films
were
obtained
by
electrodeposition
technique
from
commercial
Zn
2+
solutions
and
those
spent
alkaline
batteries.
The
type
of
counterion
pH
impact
directly
on
the
structural,
morphological,
optical
properties
electrodeposited
films.
morphological
crystallographic
orientation
differences
observed
X‐ray
diffraction
(XRD)
analysis
high‐resolution
field
emission
scanning
electron
microscopy
(HR‐FESEM),
demonstrates
influence
origin
precursors
used
in
synthesis
process.
Those
samples
grown
nitrate
exhibit
nanocolumns
revealing
a
preferential
growth
(002)
direction.
On
other
hand,
random
(hexagonal
plates,
agglomerations,
clusters,
etc.)
is
through
recycled
solutions.
All
deposited
achieved
transparency
close
to
80
%
an
band
gap
around
3.30
eV.
as‐deposited
evaluated
toward
photodegradation
capacity
methylene
blue
(MB)
for
potential
technological
applications.
Results
that
prepared
ZnCl
2
presented
more
than
degradation
per
mass
ZnO.
This
work
virtuous
circle
since
are
facile
scalable
discarded
batteries
MB
photodegradation.
Furthermore,
simplicity
recovery
these
substrates
after
application
makes
them
attractive
pragmatic
option
range
water
treatment
Synopsis
:
Zinc
depleted
reused
obtain
thin
remove
contaminating
dyes
water.
Sustainability,
Год журнала:
2024,
Номер
16(24), С. 11268 - 11268
Опубликована: Дек. 23, 2024
Decarbonizing
the
iron
and
steelmaking
industry
is
critical
for
China
to
pursue
net-zero
emissions
target
advance
sustainable
industrialization
(SDG
9).
This
paper
addresses
urgent
need
decarbonization
strategies
in
this
sector,
aiming
align
with
China’s
carbon
neutrality
goals
by
2060.
By
reviewing
current
technological
advancements
potential
pathways
deep
decarbonization,
including
process
optimization,
hydrogen-based
direct
reduction,
capture,
utilization,
storage
(CCUS),
these
technologies
are
categorized
into
six
strategic
approaches:
systemic
energy
efficiency
improvement,
resource
recycling,
optimization
innovation,
breakthrough
smelting,
product
iterative
upgrading,
CCUS.
These
also
SDG
13
(climate
action)
reducing
greenhouse
gas
7
(affordable
clean
energy)
through
promotion
of
technologies.
evaluated
their
emission
reduction
maturity.
The
results
indicate
that,
while
improvements
recycling
currently
most
mature
widely
implemented
strategy,
significant
breakthroughs
hydrogen
metallurgy
CCUS
essential
achieving
long-term
neutrality.
Based
on
an
analysis,
a
comprehensive
roadmap
proposed,
detailing
near-term
actions
required
industry’s
transition.
focus
(up
2030)
should
be
enhancing
whereas
mid-term
(2030–2050)
emphasize
adoption
2050–2060
period,
achieve
widespread
commercialization
smelting
CCUS,
ensuring
achievement
study
intends
provide
systematic
framework
recommendations
policymakers
stakeholders
guide
addressing
both
economic
challenges
low-carbon
development.
