Tungsten Concentrate Specification

Tungsten Concentrate Picture

Grade

WO3 not less than(%)

impurities not more than(%)

 

S

P

As

Mo

Mn

Cu

Sn

SiO2

Ca

Sb

Bi

Pb

Fe

 

wolframite special grade-I-2

70

0.4

0.03

0.08

-

-

0.05

0.1

5

4

0.05

0.05

0.05

 

wolframite special grade-I-1

68

0.5

0.04

0.1

 

 

0.06

0.15

7

5

0.1

0.1

0.1

 

wolframite A class I

65

0.7

0.05

0.15

 

 

0.13

0.2

7

5

 

 

 

 

wolframite A class II

65

0.7

0.1

0.1

0.05

 

0.25

0.2

5

3

 

 

 

 

 

 

 

P+As

 

 

 

 

 

 

 

 

 

 

 

wolframite A class III

65

0.8

 

0.22

0.05

 

0.35

0.4

3.8

1

 

 

 

 

scheelite special grade-II-2

70

0.5

0.05

0.07

0.015

0.4

0.2

0.15

3

 

0.1

 

 

2

scheelite special grade-II-1

70

0.6

0.1

0.1

0.02

0.5

0.25

0.2

3

 

0.2

 

 

3

test

tungsten concentrate in accordance with GB/T4414-84 packaging tungsten concentrate sampling, sample preparation methods and GB6150.1 ~ 6150.19-85 tungsten concentrate chemical analysis methods the test.

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