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

Table 5

Sample quality variation at different roasting temperatures.

Treatment temperature (°C)	Mass before treatment (g)	Mass after treatment (g)	Mass loss (%)
Untreated	12	-	-
600	11.77	11.04	6.26
700	11.93	11.09	7.04
800	11.95	11.04	7.65
900	11.88	10.86	8.65
1,000	11.86	10.72	9.61
1,100	11.90	10.11	15.06
1,200	11.88	7.39	37.80