Coal
gangue,
as
a
byproduct
of
coal
mining
and
washing,
has
experienced
significant
surge
in
production
due
to
escalating
energy
demands.
The
extensive
accumulation
gangue
resulted
challenges,
including
resource
wastage
severe
environmental
contamination.
To
better
understanding
the
current
research
landscape,
hotspots,
emerging
trends
comprehensive
utilization
we
employed
CiteSpace
bibliometric
software
visually
analyze
200
articles
published
Web
Science
Core
Collection
from
2004
2023.
majority
these
publications
(85%)
were
between
2019
2023,
with
most
originating
China.
This
study
used
cooperative
network
analysis
examine
synthesize
contributions
different
institutions
scholars
on
examining
gangue.
By
employing
advanced
techniques
such
keyword
co-occurrence
cluster
analysis,
our
delves
into
dynamic
hotspots
this
field
over
time
periods.
Through
trend
situation
analyses,
future
directions
for
are
proposed,
aim
inspiring
relevant
guiding
policy
formulation.
Buildings,
Год журнала:
2025,
Номер
15(2), С. 159 - 159
Опубликована: Янв. 8, 2025
The
recycling
of
coal
gangue
has
considerable
potential
to
produce
secondary
environmental
hazards,
which
significantly
influence
the
high-end
application
in
practical
engineering.
present
study
investigates
effects
activation
treatment
on
physical,
chemical
properties
and
leaching
behavior
gangue.
mineral
composition,
micro-pore
structure
element
were
characterized
by
X-ray
diffraction
(XRD),
scanning
electron
microscopy
(SEM),
Thermogravimetry
Analysis
(TG),
Low-Temperature
Nitrogen
Adsorption
(LTNA)
Inductively
Coupled
Plasma
(ICP).
results
indicate
that
kaolinite
pyrite
experienced
reconstruction
after
600
°C
during
thermal
activation.
density
thermally
activated
is
increased
with
calcination
temperature
as
well
alkalinity
(from
4.8–7.1)
due
burning
organic
oxidation
pyrite.
induced
reduction
macropore
volume
(>50
nm),
enhancement
mesopore
(<5
nm)
volume.
Leachable
Ni,
Cd,
Mn,
Cu,
Zn
Pd
decreased
99%,
67%,
86%,
40%,
99%
93%
at
800
°C,
respectively.
Si
Al
calcined
exhibited
a
high
ability
solution;
leachable
reached
106.4
mg/kg,
while
86.1
mg/kg
48
h
dynamic
leaching.
Frontiers in Environmental Science,
Год журнала:
2025,
Номер
12
Опубликована: Янв. 17, 2025
Three
coal-based
solid
wastes—fly
ash
(FA),
gasification
slag
(GS),
and
coal
gangue
(CG)—were
used
to
prepare
functional
soil
(FGC)
for
the
ecological
restoration
of
mining
areas.
It
not
only
solves
problem
shortage
resources
in
area,
but
also
realizes
resourceful
use
waste.
Investigating
physicochemical
properties
oatgrass
growth
characteristics
revealed
optimal
ratios.
Compared
with
control
(CK)
at
30
d,
average
pH
FGC3
(FA:
50wt%;
GS:
25wt%;
CG:
25wt%)
decreased
from
9.54
8.54,
organic
matter
content
increased
2.57%
7.60%,
available
potassium
ammonium
nitrogen
38.02
2.83
mg⋅kg
−1
53.46
3.21
,
respectively.
Functional
bulk
density
porosity
were
superior
Sandy
somewhere
Ningxia
(SL)
GS
CG
contents
<25wt%.
significantly
improved
agronomic
traits.
CK
plant
height,
stem
thickness,
fresh
weight,
dry
weight
17.68
cm,
0.99
mm,
0.09
g,
0.02
g
27.0
1.26
0.24
0.04
And
chlorophyll
was
by
20.39%
compared
CK.
This
study
verified
feasibility
synergistic
preparation
soils
three
wastes
provides
reference
large-scale
utilization
wastes.
Coatings,
Год журнала:
2025,
Номер
15(4), С. 430 - 430
Опубликована: Апрель 6, 2025
The
presence
of
pyrite
in
coal
gangue
significantly
degrades
the
performance
its
prepared
kaolin
ceramic
and
coating
applications.
Implementing
separation
techniques
to
remove
can
markedly
enhance
quality
products.
However,
there
is
no
research
on
effect
material
particle
size
distribution
current
study
shaking
table
separation.
For
this
reason,
was
crushed
different
maximum
sizes
study,
fitted
analyzed.
Based
fitting
results,
Rosin–Rammler–Sperling–Bennet
(RRSB)
with
a
uniformity
coefficient
n
0.74
used
influence
characteristic
de
effect.
Fuller
modulus
q
0.45
also
impact
dmax.
results
showed
that
reduced
contents
SO3
Fe2O3
by
30.85%
25.71%,
respectively,
compared
raw
materials.
In
comparison,
RRSB
41.01%
30.85%,
indicating
better
than
distribution.
addition,
when
37–42
μm,
content
tailings
varied
very
little,
stable.
This
demonstrates
influences
efficiency
table,
providing
novel
idea
for
enhancing
processes.
Future
studies
may
further
explore
another
parameter
or
two-parameter
coupling
table.
