CrystEngComm,
Journal Year:
2024,
Volume and Issue:
26(17), P. 2233 - 2240
Published: Jan. 1, 2024
An
affordable,
scalable,
and
easily
adoptable
solution-based
processing
route
provides
a
potential
way
of
converting
waste
Si
solar
cells
into
aluminosilicate
minerals
to
contribute
sustainability
in
the
energy
value
chain.
Cerâmica,
Journal Year:
2025,
Volume and Issue:
71
Published: Jan. 1, 2025
Abstract
This
investigation
demonstrated
the
effects
of
calcium
aluminate
cement’s
total
or
partial
replacement
with
a
potassium-metakaolin-based
geopolymeric
binder
(K-GP)
in
high-alumina
castables.
Experimental
measurements
were
conducted
to
analyze
produced
samples’
processing,
microstructure,
and
properties
after
curing
firing
(800-1400
°C).
The
results
highlighted
K-GP
as
viable
option
for
producing
cement-free
refractories.
After
at
1100-1400
°C,
improved
geopolymer-bonded
refractories
attributed
their
complex
resultant
comprising
alumina
particles
strongly
adhered
by
glassy
phase
contained
randomly
distributed
clusters
kaliophilite
and/or
leucite
grains
within
ceramic
matrix.
1250
samples
exhibited
promising
set
properties:
high
thermal
shock
resistance,
modulus
rupture
17.01
MPa,
Young’s
67.15
GPa,
porosity
16.85%,
density
2.87
g/cm³,
linear
shrinkage
0.33%.
These
are
suitable
applications
intermediate
temperatures
(i.e.,
petrochemical
non-ferrous
industries).