Lead and zinc deposit industrial indicators general requirements table

Table of lead zinc deposit industrial index General requirements

project

Sulphide ore

Mixed mine

Oxidized ore

Pb

Zn

Pb

Zn

Pb

Zn

Boundary grade (ωB)%

1.3 to 0.5

0.5 to 1

0.5 to 0.7

0.8 to 1.5

0.5 to 1

1.5~2

Minimum industrial grade (ωB)%

0.7 to 1

1 to 2

1 to 1.5

2 to 3

1.5~2

3 to 6

Average grade of the deposit (ωB)%

5~8

6 to 9

10~12

Minimum recoverable thickness m

1 to 2

1 to 2

1 to 2

Stone removal thickness m

2 to 4

2 to 4

2 to 4

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