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Physical & Chemical properties

Additional physico-chemical information

Administrative data

Endpoint:
additional physico-chemical information
Type of information:
experimental study
Adequacy of study:
key study
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: No GLP study but other quality assurance
Cross-reference
Reason / purpose:
reference to same study

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2010

Materials and methods

Principles of method if other than guideline:
Chemistry /elemental analysis was determined using ICP (inductively Coupled Plasma spectroscopy). Metal speciation/metal mineralogy was assessed from Sequential extraction/metal analysis and mineralogical analysis (XRD and microscopes equipped with EDS (Energy Dispersive Spectrometry) and WDS (Wavelength Dispersive Spectrometry) analysers. The interpretation of the overall results was performed by expert (with profound knowledge of metal particularities).
GLP compliance:
no
Remarks:
but equivalent Quality Assurance
Endpoint investigated:
other: representative mineralogy

Test material

Reference
Name:
Unnamed
Type:
Constituent
Details on test material:
test material was dried before sending to test labs. Sampling of representative samples was made according to Sampling protocol of the REACH Copper Consortium (iuclid 1.4 attachment).
B6 anodic slime from primary smelter (site 1a, not decopperized) (representative, dried, homogenized) lab code: 09TT03746
B6 anodic slime from primary smelter (site 1b, decopperized) (representative, dried, homogenized) lab code: 09TT03745
B6 anodic slime, site 2A lab code: 09TT06661
B6 anodic slime, site 2B lab code: 09TT06662

Results and discussion

Results:
The tested materials were characterized (physico-chemical and mineralogical properties) in view of the upcoming REACH registrations of copper intermediates and copper slags by the Copper Consortium.
The studied four anode slime samples includes two types of anode slimes, first ones that consist mainly of anglesite –type lead sulphate, silver and antlerite –type copper sulphate. The other anode slimes consists mainly of naumannite, Ag2Se, anglesite, barite, Sb-As –oxides, copper chlorides and sulfates.
Chemically first anode slimes contains 21.5 and 27.5% silver, 10.3 and 11.6% copper, 1.9 and 2% arsenic, 18.5 and 24% lead and 6.5 and 10.7% sulphur. The chemically second anode slimes contain 13.1 and 21.9% silver, 0.5 and 8.1% copper, 3.6 and 5.3% arsenic, 1.14 and 10.7% lead and 6.4 and 7.8% sulphur.

Any other information on results incl. tables

The chemical analysis of studied sampled are given in Table 7 and Table 8 and their mineralogical composition in Table 9 and Table 10 with distribution of copper. The microscope images, XRD and TG/DSC –graphs and results of water solubility tests are given for sample09TT03745 in Appendix A, 09TT03746 in Appendix B, 09TT06661 in Appendix C and 09TT06662 in Appendix D.

 

Table 7: Chemical composition of studied sample, part 1

Lab code

 

 

09TT03745

09TT03746

09TT06661

09TT06662

Sample code

 

 

B6

B6

B6

B6

 

 

 

 

 

 

 

Cu

P1

%

11.20

4.10

0.19

2.56

 

P2

%

0.03

5.84

0.03

0.09

 

P3

%

0.09

0.15

0.27

5.24

 

P4

%

0.02

0.05

0.05

0.04

 

Sum

 

11.34

10.14

0.54

7.93

 

TOT

%

11.60

10.30

0.53

8.09

 

 

 

 

 

 

 

As

P1

%

1.34

0.03

0.09

0.07

 

P2

%

0.39

1.84

0.74

0.88

 

P3

%

<0.005

<0.005

2.06

3.88

 

P4

%

0.13

0.19

0.23

0.33

 

Sum

 

1.86

2.06

3.12

5.15

 

TOT

%

1.91

1.99

3.55

5.25

 

 

 

 

 

 

 

Fe

P1

%

0.02

0.03

0.01

0.17

 

P2

%

<0.010

0.02

0.03

0.05

 

P3

%

<0.005

<0.005

0.01

0.01

 

P4

%

0.02

0.01

0.03

0.02

 

Sum

 

0.04

0.05

0.08

0.26

 

TOT

%

0.09

0.05

0.08

0.26

 

 

 

 

 

 

 

Ni

P1

%

0.63

0.11

<0.004

0.01

 

P2

%

<0.010

0.02

<0.011

<0.016

 

P3

%

<0.005

<0.005

<0.005

0.01

 

P4

%

0.02

0.01

<0.002

0.00

 

Sum

 

0.64

0.13

0.00

0.02

 

TOT

%

0.68

0.15

<0.004

0.01

 

 

 

 

 

 

 

Pb

P1

%

0.06

0.02

0.09

0.03

 

P2

%

0.12

0.13

0.10

0.13

 

P3

%

0.87

1.10

0.05

0.06

 

P4

%

16.70

21.70

9.63

1.05

 

Sum

 

17.76

22.95

9.86

1.27

 

TOT

%

18.50

24.00

10.70

1.14

P1= H2O , P2= H2SO4, P3= KCN+Br-MeOH, P4= HNO3–soluble, TOT= total -, BM= bromine-methanol dissolutions, KEM= ion exchange chromatography, LECO = S/C analyzer, satmagan = Fe3O4analyzer n.a. = Not analyzed


 

Table 8: Chemical composition of studied sample, part 2

Lab code

 

 

09TT03745

09TT03746

09TT06661

09TT06662

Sample code

 

 

B6

B6

B6

B6

 

 

 

 

 

 

 

Co

TOT

%

0.03

<0.004

<0.004

<0.004

Sb

TOT

%

0.69

1.05

8.16

9.80

Sn

TOT

%

0.04

0.13

0.05

0.02

Zn

TOT

%

0.02

0.01

0.00

0.00

Ag

TOT

%

21.50

27.50

21.90

13.10

 

 

 

 

 

 

 

Se

TOT

%

n.a.

n.a.

7.83

10.4

Te

TOT

%

n.a.

n.a.

1.30

1.06

 

 

 

 

 

 

 

SiO2

KEM

%

0.16

0.25

3.60

1.60

Al2O3

TOT

%

0.08

0.03

0.29

0.18

Cr2O3

TOT

%

<0.006

0.01

0.01

0.03

K2O

TOT

%

<0.072

<0.072

0.09

0.04

MgO

TOT

%

0.01

<0.007

0.04

0.01

MnO

TOT

%

<0.005

<0.005

<0.003

0.00

Na2O

TOT

%

0.06

0.05

0.10

0.05

CaO

TOT

%

0.11

0.05

0.13

0.08

Ba

TOT

%

n.a.

n.a.

7.16

15.30

 

 

 

 

 

 

 

S

Leco

%

10.70

6.46

6.38

7.82

SO42-

KEM

%

33.10

20.00

6.50

5.50

C

Leco

%

0.17

0.19

0.94

0.86

Satmagan

 

%

0.00

0.00

0.00

0.00

 

 

 

 

 

 

 

Surface area

 

m2/g

0.81

2.99

3.53

2.37

Density

 

g/cm3

4.13

4.94

4.94

4.56

 

 

 

 

 

 

 

P1= H2O , P2= H2SO4, P3= KCN+Br-MeOH, P4= HNO3–soluble, TOT= total -, BM= bromine-methanol dissolutions, KEM= ion exchange chromatography, LECO = S/C analyzer, satmagan = Fe3O4analyzer,n.a. = Not analyzed

 


 

Table 9: Mineral composition and distribution of copper, arsenic and silver

Sample

 

09TT03745

 

 

 

09TT03746

Type

 

 

 

 

 

 

Mineral composition

 

B6

 

 

 

B6

PbSO4

Anglesite

53.07

 

PbSO4

Anglesite

44.85

Ag

Silver

21.81

 

Ag

Silver

27.74

CuSOx

Antlerite

21.56

 

CuSOx

Antlerite

15.12

As2O3

Arsenolite

2.15

 

CuAsOx

Cornubite

7.68

SbAsO

Cervantite

1.12

 

SbSnO

Cervantite

4.35

SiO2

Quartz

0.16

 

SiO2

Quartz

0.25

CoNiSbSO4

Aplowite

0.13

 

 

 

 

 

 

 

 

 

 

 

Total

 

100.00

 

Total

 

100.00

 

 

 

 

 

 

 

Distribution of copper

 

 

 

 

 

 

CuSOx

 

100.00

 

CuSOx

 

66.33

 

 

 

 

CuAsOx

 

33.67

Distribution of iron

 

 

 

 

 

 

CoNiSbSO4

 

100.00

 

 

 

 

 

 

 

 

 

 

 

Distribution of arsenic

 

 

 

 

 

 

As2O3

 

85.69

 

CuAsOx

 

94.90

SbAsO

 

10.18

 

CuSOx

 

2.64

CoNiSbSO4

 

0.05

 

PbSO4

 

2.46

 

 

 

 

 

 

 

Distribution of silver

 

 

 

 

 

 

Ag

 

94.79

 

Ag

 

91.78

PbSO4

 

2.18

 

PbSO4

 

5.40

SbAsO

 

0.25

 

CuSOx

 

2.64

 

 

 

 

CuAsOx

 

0.18

 

 

 

 

 

 

 

 


 

Table 10: Mineral composition and distribution of copper, iron and arsenic

Sample

 

09TT06661

 

 

 

09TT06662

Type

 

 

 

 

 

 

Mineral composition

B6

 

 

 

B6

Ag2Se

Naumannite

31.14

 

Ag2Se

Naumannite

30.45

PbSO4

Anglesite

19.96

 

BaSO4

Barite

24.37

BaSO4

Barite

13.26

 

SbAs -oxide

SbAsOx

22.65

SbAs -oxide

SbAsOx

13.22

 

Cu2S

Chalcocite

7.05

AgCl

Chlorargyrite

12.04

 

Cu(SO4)*5(H2O)

Chalcanthite

5.75

SiO2

Quartz

3.60

 

PbSO4

Anglesite

5.17

SbTe -oxide

SbTeOx

3.28

 

SiO2

Quartz

1.60

CaSO4

Gypsum

1.67

 

CaSO4

Gypsum

1.49

Bi

Bismuth

0.86

 

CuFeS2

Chalcopyrite

0.85

Cu2S

Chalcocite

0.39

 

Au

Gold

0.62

Cu2Cl(OH)3

Atacamite

0.36

 

 

 

 

Au

Gold

0.22

 

 

 

 

Total

 

100.00

 

Total

 

100.00

 

 

 

 

 

 

 

Distribution of copper

 

 

 

 

 

Cu2S

 

50.57

 

Cu2S

 

64.77

Cu2Cl(OH)3

 

49.43

 

Cu(SO4)*5(H2O)

 

31.64

 

 

 

 

CuFeS2

 

3.58

Distribution of iron

 

 

 

 

 

Cu2Cl(OH)3

 

100.00

 

CuFeS2

 

100.00

 

 

 

 

 

 

 

Distribution of arsenic

 

 

 

 

 

SbAs -oxide

 

100.00

 

SbAs -oxide

 

100.00

 

 

 

 

 

 

 

 


Applicant's summary and conclusion

Conclusions:
Good quality study that assessed full chemistry and mineralogy of several representative Copper slimes. Proposed RWC mineralogy (distribution pattern for each key element, i.e. % from Total into the various mineralogical forms/species present into the UVCB) can be used for classification of the UVCB substance (mixture toxicity rules)
Executive summary:

The studied four anode slime samples includes two types of anode slimes, first ones that consist mainly of anglesite –type lead sulphate, silver and antlerite –type copper sulphate. The another anode slimes consists mainly of naumannite, Ag2Se, anglesite, barite, Sb-As –oxides, copper chlorides and sulfates.Chemically first anode slimes contains 21.5 and 27.5% silver, 10.3 and 11.6% copper, 1.9 and 2% arsenic, 18.5 and 24% lead and 6.5 and 10.7% sulfur. The second Chemically first anode slimes contains 13.1 and 21.9% silver, 0.5 and 8.1% copper, 3.6 and 5.3% arsenic, 1.14 and 10.7% lead and 6.4 and 7.8% sulfur.

Based on these resulst the following RWC Distribution pattern is derived (relevant for classification):

Arsenic in oxyde As2O3/AsO3 (85.69% of total As) + in other oxide forms (10.18% of total As) + in metal (4.13% of total As)

Nickel in NiSO4 forms (100% of total Ni)

Cu in CuSO4 forms (100% of total Cu)

Cobalt in CoSO4 form (100% of total Co)

Lead in PbSO4/Pb compounds forms (100% of total Pb)

Sb in Sb sulphates/compounds forms (100% of total Sb)