Cement and slag

Clinker, cement and slag

Clinker, cement in multiple grades, and granulated and ground granulated blast furnace slag (GBFS, GGBFS) for cement plants and blending.

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We have shipped about one million tonnes of clinker to Sri Lanka, Bangladesh, India, Kuwait, Iraq and Oman. Cement shipments are verified against INSO and SGS documentation, and cement grades are quoted per request.

ClinkerCement, multiple gradesGBFSGGBFS

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Clinker, typical analysis

Typical values with tolerance, from a supplier analysis. Final specification is agreed per contract.

Parameter	Unit	Typical value	Tolerance / limit
SiO2	%	21.29	±0.5
CaO	%	64.5	±1.0
SO3	%	1.05	±0.5
MgO	%	2.05	±0.5
Fe2O3	%	4.11	±0.3
Al2O3	%	5.05	±0.3
LOI	%	0.48	max 0.85
Free CaO	%	0.70	max 1.5
Na2O	%	0.51	-
K2O	%	0.57	-
C3S	%	58.00	±1.0
LSF	-	93.44	±1.0
SM	-	2.32	-
AM	-	1.23	-
C2S	%	17.3	±1.0
C3A	%	6.4	±0.5
C4AF	%	12.50	±1.0
Cl	%	0.02	-
Total alkali	%	0.88	max 1.0
IR	%	0.28	-

LSF: lime saturation factor. SM: silica modulus. AM: alumina modulus. IR: insoluble residue.

GGBFS, typical analysis

Ground granulated blast furnace slag, typical result with standard deviation. Final specification is agreed per contract.

Parameter	Unit	Typical value	Tolerance / limit
SiO2	%	36.50	±1.20
Al2O3	%	10.00	±1.50
Fe2O3	%	1.00	±0.30
CaO	%	38.50	±1.00
MgO	%	7.80	±1.00
SO3	%	0.30	±0.15
K2O	%	0.80	±0.10
Na2O	%	0.65	±0.10
Cl	%	0.030	±0.010
S2-	%	1.00	±0.15
Mn2O3	%	1.50	±0.25
TiO2	%	1.50	±0.20
LOI	%	0.50	±0.20
IR	%	0.40	±0.20
Blaine	cm²/g	4500	±150
Density	g/cm³	2.9	-
Activity index, 7 days	%	55	±3
Activity index, 28 days	%	75	±3
Glass content	%	90.00	±5.00