FIELD: metallurgy.
SUBSTANCE: procedure for determination of gold in ore and concentrate consists in oxidising burning and in successive cinder melting with fluxes, oxide of lead and reducer for production of gold-lead alloy. Further, there is performed cupellation, and gold bead extraction and weighting. Also, oxidising burning is performed with addition of oxide or peroxide of calcium or barium at amount of 110-130 % of stoichiometric required for binding sulphur into sulphate of calcium or barium at temperature 400-700°C during 30-60 minutes. Produced cinder is melted for production of gold-lead alloy.
EFFECT: more accurate determination of gold.
1 tbl
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD OF IDENTIFICATION OF NOBLE METALS IN SULFIDE ORES AND THEIR PROCESSING PRODUCTS | 2008 |
|
RU2365644C1 |
| METHOD OF ASSAY DETERMINATION OF CONTENT OF GOLD IN ORES AND IN PRODUCTS OF THEIR PROCESSING | 2005 |
|
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| METHOD FOR DETERMINING CONTENT OF PRECIOUS METALS IN ORES AND THEIR DERIVATIVES | 2010 |
|
RU2443790C1 |
| METHOD OF PROCESSING GRAVITY SEPARATION CONCENTRATES CONTAINING PRECIOUS METALS | 1999 |
|
RU2156820C1 |
| METHOD FOR PROCESSING SULFIDE CONCENTRATES CONTAINING LEAD, NON-FERROUS AND NOBLE METALS | 2006 |
|
RU2316606C1 |
| METHOD OF RECOVERY OF NOBLE METALS FROM SILVER-CONTAINING CONCENTRATES | 1999 |
|
RU2162897C1 |
| PROCESSING METHOD OF SULPHIDE CONCENTRATES CONTAINING PRECIOUS METALS | 2012 |
|
RU2506329C1 |
| A METHOD OF ASSAY OF GOLD AND SILVER IN ORES AND CONCENTRATES | 0 |
|
SU1431482A1 |
| METHOD OF RECOVERING PRECIOUS METALS FROM SILVER-CONTAINING CONCENTRATES | 1997 |
|
RU2114203C1 |
| METHOD OF RECOVERING GOLD FROM GOLD ORE CONCENTRATES | 2004 |
|
RU2259410C1 |
