Table 1 rock gold mine industrial index reference

project

index

Boundary grade (mass number of molecules)

(1 × 10 - 6 ) ~ (2 × 10 - 6 ), heap leaching oxidized ore is (0.5 × 10 - 6 ) ~ (1 × 10 - 6 )

Minimum industrial grade (mass number of molecules)

(2.5×10 - 6 )~(4.5×10 - 6 )

Average grade of mineral deposits (mass number of molecules)

(4.5×10 - 6 )~(5.5×10 - 6 )

Minimum recoverable thickness

0.8~1.5m, the steep slope is the lower limit, and the gentle slope is the upper limit.

Stone removal thickness

2 to 4 m, underground miners are the lower limit, open pit miners are the upper limit

Non-mine segment rejection criteria

The corresponding project is 10~15m

Non-corresponding project is 20~30m

Table 2 General requirements for industrial indicators of symbiotic ( copper , lead and zinc ) in rock and gold mines

project

Sulphide ore

Oxidized ore

Cu (copper)

Pb (lead)

Zn (zinc)

Cu (copper)

Pb (lead)

Zn (zinc)

Boundary grade (ωB)%

0.2 to 0.3

0.3 to 0.5

0.5 to 1

0.5

0.5 to 1

1.5~2

Minimum industrial grade (ωB)%

0.4 to 0.5

0.7 to 1

1 to 2

0.7

1.5~2

3 to 6

Average grade of the deposit (ωB)%

0.7 to 1

6

6

10~12

10~12

Minimum recoverable thickness m

1 to 2

1 to 2

1 to 2

1

1 to 2

1 to 2

Stone removal thickness m

2 to 4

2 to 4

2 to 4

2

2 to 4

2 to 4

Table 3 Evaluation of associated components of rock gold ore

element

copper

lead

Zinc

Tungsten trioxide

antimony

molybdenum

Cu

Pb

Zn

WO 3

Sb

Mo

Quality score

0.1

0.2

0.4

0.5

0.4

0.01

element

arsenic

carbon

sulfur

cobalt

silver

As

C

S

Co

Ag

Quality score

0.2

2

0.01

2(g/t)

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