CrystEngComm,
Год журнала:
2024,
Номер
26(17), С. 2233 - 2240
Опубликована: Янв. 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.
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).