Quality Standards and Conditions

Lead concentrate

Lead concentrate is a free flowing product of polymetallic ores flotation.

Appearance: powder of dark tint silvery colour, containing about 70% of lead.

Zinc concentrate

Zinc concentrate is a free flowing product of polymetallic ores flotation.

Appearance: powder of yellow-brown colour, containing about 50% of zinc.

Quality of concentrates corresponds to the following parameters:

Lead concentrate
Zinc Concentrate

Fineness

Grades,
micron

+ 315

+ 160

+ 71

- 71

Total:

Recovery
%

0,3

10,3

22,1

67,3

100

Moisture %

7,5

Quality

Pb %

60,00 - 70,00

Ag g/tn

1100 - 2200

Au g/tn

0,15 - 0,54

Zn %

4,0 - 6,5

Cu %

0,9 - 1,5

Fe %

4,0 - 6,5

SiO2 %

1,0 - 2,0

As %

0,2 - 0,8

Bi %

0,08 - 0,25

Cd %

< 0,03

S %

13,00 - 15,50

CaO %

0,60

MgO %

0,06 - 2,5

Al2O3 %

0,30 - 0,80

Mn %

—

Hg %

—

Mg %

—

Sb %

0,12 - 0,5

Fineness

Grades,
micron

+ 160

+ 71

- 71

Total:

Recovery
%

3,7

18,8

77,5

100

Moisture %

9,5

Quality

Pb %

0,40 - 1,00

Ag g/tn

90 - 150

Au g/tn

0,10 - 0,20

Zn %

48,00 - 51,00

Cu %

1,0 - 1,5

Fe %

11,0 - 14,0

SiO2 %

1,0 - 2,0

As %

0,05 - 0,25

Bi %

0,0025 - 0,004

Cd %

0,2 - 0,35

S %

30,00 - 31,50

CaO %

1,00 - 2,60

MgO %

0,02 - 0,06

Al2O3 %

0,20 - 0,60

Mn %

0.2 - 0.4

Hg %

max 0.01

Mg %

0.02 - 0.06

Sb %

—