Slags, lead reverbatory smelting

Additional physico-chemical information

Administrative data

Endpoint:

other: representative mineralogy

Type of information:

experimental study

Adequacy of study:

key study

Reliability:

2 (reliable with restrictions)

Rationale for reliability incl. deficiencies:

other: non GLP but other quality assurance

Cross-reference

Reason / purpose for cross-reference:

reference to same study

Data source

Reference

Reference Type:

study report

Title:

Unnamed

Year:

2010

Report date:

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:

other quality assurance

Test material

Test material information

Constituent 1

Reference substance name:

Slags, lead reverbatory smelting

EC Number:

273-800-2

EC Name:

Slags, lead reverbatory smelting

Cas Number:

69029-58-9

Molecular formula:

Molecular weight/formula concept not applicable to Inorganic UVCB (complex metal containing substance)

IUPAC Name:

Slags, lead reverbatory smelting

Results and discussion

Results:

Results from the analys of sample 09TT08069 have been removed from this IUCLID record in light of refinements to the SIP and to reflect the active registrant list. The legacy data are still contained in the Outotec report attached.

The studied sample 09TT08044 contains 30.3 % lead, 17.7% SiO2, 9.6% iron, 6.7% CaO, 4.6% copper, 4.5% zinc, 4.2% Al2O3, 1.6% arsenic and traces of other elements.

The studied sample 09TT08044 consists mainly of lead silicate (63.4%). It forms complex particles with FeZnNi oxides (12.7%), magnetite (10.2), chalcocite (3.9%) and calcium silicates (3.9%). Lead silicates are also the main carriers of lead and arsenic. Iron is mainly carried by magnetite.

Any other information on results incl. tables

Chemical and minerological composition of a reference sample of slags lead reverbatory smelting:

ORC ref.			OR24
Sample			2000171/13
Lab code			09TT08044
Substance			Slags, lead reverbatory smelting
EINECS			273-800-2
Consortium reference no.			26
Ag	KEM	%	0.044
B	KEM	%	N/A
Bi	TOT	%	0.087
Cd	TOT	%	0.12
Co	TOT	%	0.18
Mo	TOT	%	0.007
Sb	TOT	%	1.14
Se	TOT	%	0.12
Sn	TOT	%	1.06
Te	TOT	%	0.039
Zn	TOT	%	4.55
SiO2	KEM	%	17.70
Al2O3	TOT	%	4.20
CaO	TOT	%	6.72
Cr2O3	TOT	%	0.14
K2O	TOT	%	< 0.05
MgO	TOT	%	0.67
MnO	TOT	%	1.03
Na2O	TOT	%	0.95
(SO4)2	KEM	%	0.038
S	LECO	%	0.32
C	LECO	%	0.10
Satmagan		%	10.2

Lab code		09TT08044
Mineral composition		%
Pb-silicate	Pb2SiO4	63.36
FeZnNi -oxide	FeZnNiO	12.73
Magnetite	Fe3O4	10.20
Chalcocite	CuS	3.92
Ca-silicates	CaSiO	3.51
Calcite	CaCO3	3.30
SnPb -sulphide	(Sn,Pb)S	2.27
Periclase	MgO	0.50
Lead oxides	PbO	0.38
Metallic copper	Cu	0.27
FeCrZn -oxide	FeCrZnO	0.08
Total		100
Distribution of lead, -%
Pb-silicate		96.25
SnPb -sulphide		2.37
Ca-silicates		0.72
Lead oxides		0.66
Distribution of iron, -%
Magnetite		51.55
FeZnNi -oxide		31.75
Pb-silicate		15.69
Ca-silicates		0.62
FeCrZn -oxide		0.18
SnPb -sulphide		0.15
Periclase		0.03
Lead oxides		0.01
Metallic copper		0.01

ORC ref.			OR24
Sample			2000171/13
Lab code			00TT08044
Substance			Slags, lead reverbatory smelting
EINECS			273-800-2
Consortium reference No.			26
As	P1	%	<0.003
	P2	%	1.62
	P3	%	<0.004
	P4	%	0.052
	PSUM	%	1.67
	TOT	%	1.63
Cu	P1	%	<0.003
	P2	%	1.25
	P3	%	3.07
	P4	%	0.24
	PSUM	%	4.56
	TOT	%	4.64
Fe	P1	%	<0.003
	P2	%	2.14
	P3	%	0.010
	P4	%	1.30
	PSUM	%	3.45
	TOT	%	9.56
Ni	P1	%	<0.003
	P2	%	<0.021
	P3	%	<0.004
	P4	%	0.11
	PSUM	%	0.13
	TOT	%	1.37
Pb	P1	%	<0.003
	P2	%	0.19
	P3	%	2.36
	P4	%	27.30
	PSUM	%	29.85
	TOT	%	30.30

Applicant's summary and conclusion

Conclusions:

Good quality study that assessed full chemistry and mineralogy of a representative sample of slags lead reverbatory smelting. The mineralogy (and the distribution pattern for each key element, i.e. % from Total into the various mineralogical forms/species present into the UVCB) of the reference samples can be used to derive the classification of slags lead reverbaotry smelting samples (mixture toxicity rules).

Executive summary:

The studied sample 09TT08044 consists mainly of lead silicate (63.4%). It forms complex particles with FeZnNi oxides (12.7%), magnetite (10.2), chalcocite (3.9%) and calcium silicates (3.9%). Lead silicates are also the main carriers of lead and arsenic. Iron is mainly carried by magnetite.

The mineralogy of the reference sample can be used to derive the classification of both samples but also to predict the mineralogy of other slags lead reverbatory smelting samples. Differences in speciation between the two original reference samples initially suggested the need for two grades of this intermediate based on the sulphur content. However, since it turned out that both speciation patterns resulted in very similar classifications for all company specific samples, it was decided to revert to a single grade for this intermediate. The registrant of high-sulphur sample has since deactivated the registration and thus this record only discusses the sample of the active registrant.

The calculator sheet, which is used to derive the classification and which reflect particular assumptions that are made, can be found in attachment above (attached background material).