Influence of Sorbent Characteristics on Fouling and Deposition in Circulating Fluid Bed Boilers Firing High Sulfur Indian Lignite

Table 3

Elemental analysis—calcium and magnesium carbonate contents of limestones.

Limestone sample ID	(1) SLPP	(2) Ariyalur	(3) NLC Barsingsar	(4) Kutch	(5) Giral Rajasthan
Al2O3 %	4.26	1.72	0.74	2.78	1.98
BaO %	0.02	0.01	0.00	0.00	0.01
CaO %	38.6	48.4	52.1	45.0	47.3
Fe2O3T %	12.32	2.27	0.28	1.63	0.79
K2O %	0.03	0.20	0.04	0.31	0.20
MgO %	0.89	0.35	0.37	1.24	0.71
MnO %	0.34	0.04	0.01	0.03	0.02
Na2O %	0.02	0.09	0.02	0.21	0.10
P2O5 %	0.13	0.16	0.07	0.08	0.08
SiO2 %	6.38	4.75	2.05	6.96	6.81
SrO %	0.02	0.01	0.03	0.07	0.03
TiO2 %	0.43	0.08	0.03	0.23	0.10
LOI (900°C)	34.4	39.4	41.4	39.4	38.6
CaCO3 g/100 g of stone	70.52	88.67	95.7	82.04	87.30
MgCO3 g/100 g of stone	1.9	0.74	0.8	2.67	1.54