General requirements for industrial indicators of nickel deposits

project

Nickel sulfide ore

Nickel oxide-nickel silicate

Primary ore

Oxidized ore

Pit mining

Lucai

Pit mining

Lucai

Boundary grade (ωB)%

0.2 to 0.3

0.2 to 0.3

0.7

0.7

0.5

Minimum industrial grade (ωB)%

0.3 to 0.5

0.3 to 0.5

1

1

1

Average grade of the deposit (ωB)%

0.5 to 2

0.6~1

1.5

1.2

Minimum recoverable thickness m

1

2

1

2

1

Stone removal thickness m

≥2

≥3

≥2

≥3

1 to 2