en.plaurum.ru

www.ez-ocm.ru/en

Liudmila Gorbatova and Elena Anchutina gorbatova@ezocm.ru

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/