Study on Vacuum Roasting Pretreatment of Carbonaceous Gold Concentrates Based on Nonoxidation Technology

Table 6

Binding energy of the inner-layer electrons of the main elements on the sample surface at different conditions.

Treatment conditions	Binding energy (eV)
	S 2p	Fe 2p	Si 2p	C 1s	O 1s
Untreated	170.27	711.70	103.60	284.81	532.64
	164.64	725.66
800°C	169.56	711.81	103.96	284.80	532.93
	164.09	726.36
1,200°C	173.54	710.04	103.71 101.24	284.80	532.75