No.

Acid concentration (gr/l)

Time (minute)

Temperature (Celsius)

Pulp density (gr/l)

Cu recovery (%)

1

40

60

40

100

82.74

2

40

90

60

150

62.67

3

40

120

80

200

78.75

4

80

60

60

200

86.96

5

80

90

80

100

92.44

6

80

120

40

150

77.75

7

120

60

80

150

84.10

8

120

90

40

200

81.02

9

120

120

60

100

99.11