Mixture

Time

minutes

Temperature

˚C

Final As

wt%

As Volatilization

wt%

Initial dust

5.38

Copper concentrate/FS dust

75/25 (wt%/wt%)

5

650

0.49

90.9

15

650

0.37

93.1

30

650

0.30

94.4

5

700

0.26

95.2

15

700

0.31

94.2

30

700

0.26

95.2