en.plaurum.ru
www.ez-ocm.ru/en
Liudmila Gorbatova and Elena Anchutina [email protected]
Ekaterinburg Non-Ferrous Metals Processing Plant (EZOCM)
The LBMA Assaying and Refining Conference 2017,
Royal Garden Hotel, Kensington, London
19 - 22 March 2017
PLAURUM GROUP OF COMPANIES
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PLAURUM group of companies was organized in 2016.
The group incorporates production facilities in:
Russia (JSC “EZOCM”, JSC “UPCR”, LLC “UPCP”),
Central Europe (Safina, a.s.),
the People’s Republic of China (Guoda Safina),
the USA (Safina Materials, Inc.),
as well as sales offices in Slovakia, Poland, Romania, and Kyrgyzstan.
MAIN
PLAURUM
DEVELOPMENT
ACTIVITIES
production of industrial materials and
products made of precious metals
and their alloys
services on purchasing, processing,
refining of raw materials and refined
precious metals supply
engineering services on
development of new technologies
and products
analysis of different types of raw
materials and other materials
containing precious metals
processing poor man-made and
mineral hard-to-extract raw materials
containing precious metals
development of competences and
range of services for rare-earth and
non-ferrous metals
CENTRAL ANALYTICAL LABORATORY OF EZOCM
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Huge bank of reference materials - more
than 150 ones
More than 300 validated analytical
techniques
Testing for Good Delivery confirmation
from 1999 (for Au, Ag, Pt, Pd)
Participation in LBMA proficiency testing of
gold and silver
Services Advantages
Providing a full range of
analyses of materials based
on precious metals and
containing precious metals
Development of reference
materials based on
precious metals
Winner of
Prestigious for testing laboratories
award "Silver mole" (2015)
Accreditation in accordance with ISO/IEC 17025
(from 1996)
Methods of analysis:
Titrimetry
Gravimetry
AAS
AES (ARC & SPARK)
XRF (wave & ED)
ICP-MS
ICP-OES
Fire Assay
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HISTORICAL BACKGROUND OF EZOCM AS REFERENCE
MATERIAL PRODUCER
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“EZOCM” is RM producer beginning from 1965 > 1,200 RMs
28%
8%
22%
31%
11% Au
Pd
Ag
Pt
Others4%
5%
26%
24%
19%
15%
7%
Pure PM (impurities)
PM alloys (impurities)
PM alloys (matrix elements)
Alloys of PM and non-ferrousmetals (matrix elements)
Alloys of PM and non-ferrousmetals (impurities)
Other matrixes contained PM
Other matrix without PM
Diagrams of types of RMs issued at “EZOCM”: Note: PM – precious metal
ACCREDITATION in accordance with ISO Guide 34
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By the Accreditation Body: Association of
Analytical Centers “Analytica” (Russia),
the member of ILAC – International
Laboratory Accreditation Cooperation –
and APLAC – Asia Pacific Laboratory
Accreditation Cooperation (2016)
RM/CRM certification - of refined precious metals and precious metals alloys - for matrix and impurity elements
RM/CRM forms
chips, disks, rolled plate, plugs, template, cylinders
REFERERNCE MATERIAL PRODUCTION
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Planning
Smelting of RM material;
mechanical or/and
thermal treatment
Assessment of
homogeneity
Characterization
Data treatment
Assignment of certified
value
RM certificate issue
APPROACHES TO REFERENCE MATERIAL CERTIFICATION
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through interlaboratory experiment by a validated analytical technique (at EZOCM laboratories)
by a standard (State secondary standard of mass fraction and mass
(molar) concentration of metals in liquid and solid substances and materials, GVET 196-1-2012, the holder is Ural Scientific Research Institute (Russia))
by preparation procedure (as precise alloy or certified mix)
INTERLABORATORY EXPERIMENT (ILE)
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PREPARATION PROCEDURE (as precise alloy)
ADVANTIGIES REQUIREMENTS/ SPECIFICIETIES
Certified value doesn’t depend on
method of measurement
Pure initial metals
“Good” uncertainties
(up to 0.05 % rel.)
Precise alloy
Obvious traceability Certification for matrix elements
ADVANTIGIES REQUIREMENTS/ SPECIFICIETIES
Certification for impurities Need and possibility of obtaining sufficient
number of independent results
Agreement of ILE results is
proving certified value accuracy
Duration of ILE (up to several years)
The dispersion of the ILE results is the main
source of uncertainty of certified value
Unobvious traceability
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Conformity to estimated composition of smelting mix;
Testing by validated method to confirm intended use;
Agreement of RMs of the set;
RM comparison with analogous RM set
CERTIFIED VALUE ACCURACY CONFIRMATION
Au4a-1
Au4a-2
Au4a-3
Au4a-4
Au4a-5
R² = 0,9963
-0,6
-0,4
-0,2
0,0
0,2
0,4
0,6
0,8
1,0
1,2
-4,0 -3,5 -3,0 -2,5 -2,0 -1,5
Lg I
Lg C
Agreement of CRMs Au4a (set) for Fe determination (arc AES, Fe 296.69 nm)
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http://www.ez-ocm.ru/catalog/standartnye-obraztsy/
Gold, gold alloys Matrix
Au4a (set of 5 CRMs), Au4b (set of 5
CRMs), Au4aK1, Au4aK2, Au4a-0,
Au4a-6, Au4a-9
Gold
uAuNi (set of 5 CRMs)
Jewelry
gold alloys
uZPP (set of 5 CRMs)
uAuAg (set of 9 CRMs)
uAu375 (set of 6 CRMs)
uAu750 (set of 11 CRMs)
AuAgCuZn585-80
Au84 Dental
gold alloys
SD1, SD2 Au-Ag
AuAg-1
Gold alloys U (set of 6 CRMs)
AuAgCu 585-80P (set of 9 CRMs)
Silver, silver alloy Matrix
CH (set of 7 CRMs) Silver
CH2 (set of 9 CRMs)
USS Jewelry
silver
alloys uSPP (set of 4 CRMs)
AgCu801, AgCu873, AgCu874,
AgCu876, AgCu878, AgCu917,
AgCu920, AgCu922, AgCu923,
AgCu924, AgCu927, AgCu958
Ag-Cu
Ag875 (set of 8 CRMs)
Silver alloy Ag925 (set of 8 CRMs)
Ag960 (set of 8 CRMs)
Platinum, alloys
Pt1(set of 8 CRMs) Platinum
rPtRh (set of 5 CRMs) Pt-Ir
PtIr15, PtIr20
rPtPdRh (set of 8 CRMs) Pt-Pd-Rh
Palladium alloys
PdW3, PdW7, PdW20 Pd-W
CRMs OF “EZOCM” AVAILABLE FOR SALES
NEW ACTIVITIES
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Reference materials of pure precious metals (>99,99 %)
certified for matrix element:
- certified value of mass fraction and its uncertainty
Providing proficiency testing programs :
-
- testing samples for 2017:
jewelry gold alloy (determination of matrix elements);
platinum-rhodium alloy (determination of impurities);
waste automotive catalyst (Pt, Pd, Rh determination);
Au995 (Au, Ag, Cu determination).
Accreditation in accordance with ISP/IEC 17043:2010
Thank you for your attention!
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“EZ OCM” RM COLLECTION
http://www.ez-ocm.ru/catalog/standartnye-obraztsy/
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