Ash Evaluation of Indonesian Coal Blending for Pulverized Coal-Fired Boilers

Table 3

Slagging prediction of coal mixture combustion in DTF.

No.	Index	BD-1A	BD-1B	BD-2A	BD-2B	BD-3A	BD-3B	BD-4A	BD-4B
1		0.274	0.269	0.366	0.439	0.583	0.463	0.686	0.474
	Criteria	Low	Low	Low	High	High	High	High	High
2		0.16	0.16	0.25	0.30	0.30	0.24	0.33	0.23
	Criteria	Low	Low	Low	Low	Low	Low	Low	Low
3		79.10	78.06	71.96	66.96	57.63	62.66	55.65	64.93
	Criteria	Low	Low	Low	Medium	High	Medium	High	High
4		1,148	1,200	1,116	1,136	1,160	1,154	1,152	1,136
	Criteria	Very high	High	Very high	Very high	High	High	High	Very high
5		3.83	4.18	3.56	3.82	2.40	2.10	3.64	3.50
	Criteria	Very high	Very high	Very high	High	Low	Low	High	High