Common ore grade

ore

Industrial grade

Boundary grade

Non-ferrous metal

copper

Cu

0.4%-0.5%

0.20%

Lead Zinc

Pb

Sulfide ore

0.7%-1.0%

0.3%-0.5%

Mixed mine

1.0%-1.5%

0.5-0.7%

Oxidized ore

1.5%-2.0%

0.5-1.0%

Zn

Sulfide ore

1.0%-2.0%

0.5%-1.0%

Mixed mine

2.0%-3.0%

0.8%-1.5%

Oxidized ore

3.0%-6.0%

1.5%-2.0%

Bauxite (Al 2 O 3)

Lucai

≥55%

≥40%

Pit mining

≥55%

≥40%

Tungsten

Black tungsten

0.12%-0.18%

0.08%-0.1%

White tungsten

0.15%-0.2%

0.1%-0.12%

Sand tungsten

0.04%

0.02%

molybdenum

0.06%-0.08%

0.03%-0.05%

nickel

0.3%-0.5%

0.2%-0.3%

tin

0.2%-0.4%

0.1%-0.2%

magnesium

Dolomite mine

≥19%

Magnesite

≥42%~46%

antimony

1.50%

0.70%

HG

0.08%-0.10%

0.04%

cobalt

Sulfide, cobalt (cobalt and arsenic)

0.03%-0.06%

0.02%

Cobalt ore

0.50%

0.30%

bismuth

0.50%

0.20%

black metal

iron

Open hearth

Rich mine

Magnetic, red, imaginary hematite

55

50

Brown, goethite

50

45

blast furnace

Rich mine

magnetite

50

45

Red, imaginary hematite

45~50

40~45

Brown, goethite

40~45

35~40

Siderite

35~40

30~35

Self-fluxing ore

35~38

28~32

magnetite

25%

20%

Hematite

28%-30%

20%

Siderite

25%

20%

Limonite

30%

20%

titanium

Primary mine

Rutile

≥3~4%

≥2%

Titanite

≥8~10%

≥5~6%

placer

Rutile

≥2kg/m 3

≥1kg/m 3

Titanite

≥15kg/m 3

≥10kg/m 3

vanadium

Separate deposit

V 2 O 5

0.5 to 0.70%

Vanadium is an associated component deposit

≥0.1%-0.5%

manganese

Manganese oxide

Rich mine

≥30

≥20~25

Lean mine

≥20

≥10~15

Manganese carbonate

Rich mine

≥25

≥15~20

Lean mine

≥10~15

≥8

Iron manganese ore

≥10~15

chromium

Primary mine

Rich mine

≥32%

≥25%

Lean mine

≥8%-10%

≥5-8%

placer

≥3%

≥1.5%

Precious metal

gold

Rock gold

3-5g/t

1-2g/t

silver

100-120g/t

40-50g/t

Rare earth

Light rare earth

( 铈族)

镧 , 铈, 镨 , 钕 , 钜, 钐 , 铕

Fluorine-bearing carbon ore, monazite primary ore

1%

0.5%

Monazite sand mine and weathering crust

300~500g/m 3

100~200g/m 3

Heavy rare earth

( 钇族)

钇, 钆 , 铽 , 镝 , 钬 , 铒 , 铥 , 镱 , 镥

Containing yttrium (xenotime, gadolinite) pegmatite carbonate rock

0.05 to 0.1%

Phosphonium ore deposit and weathering crust deposit

50~70g/m 3

30g/m 3

strontium

Sr (lapisin mineral)

60%

40%

Rare metal

é’½

Ta

open air

20~30g/ m3

10 g/m 3

underground

50~60 g/ m3

20 to 25 g/m 3

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