FIELD: noble metal metallurgy, namely pyrometallurgical processing of sulfide concentrates containing gold and silver.
SUBSTANCE: method for processing sulfide concentrates containing lead, non-ferrous and noble metals comprises steps of mixing concentrate sodium carbonate, calcium carbonate and carbonaceous reducing agent; melting mixture; separating formed products such as slag and matte and cooling them; in addition introducing to mixture for melting iron oxide base product; performing melting for producing lead base metallic alloy; cooling matte at rate 10 -20°/h and leaching it in water; disintegrating insoluble deposit of matte till fraction size of 95 - 97 class minus 0.074 mm; correcting pulp according to its acidity till pH in range 3.0 - 6.5 and processing it by froth flotation and gravitation; combining flotation and gravitation concentrates and melting them together with initial concentrate.
EFFECT: enhanced extraction degree of noble metals to target lead alloy.
3 tbl, 3 ex
| Title | Year | Author | Number |
|---|---|---|---|
| PROCESSING METHOD OF SULPHIDE CONCENTRATES CONTAINING PRECIOUS METALS | 2012 |
|
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| METHOD FOR PROCESSING OF CONCENTRATES CONTAINING PRECIOUS METALS AND SULFIDES | 2006 |
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| METHOD OF PROCESSING CONCENTRATES CONTAINING NONFERROUS AND PRECIOUS METALS | 2002 |
|
RU2219264C2 |
| METHOD OF RECOVERING PRECIOUS METALS FROM SILVER-CONTAINING CONCENTRATES | 1997 |
|
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| METHOD OF RECOVERING GOLD FROM GOLD ORE CONCENTRATES | 2004 |
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| METHOD FOR COMPLEX PROCESSING OF POLYMETALLIC RAW MATERIALS | 1998 |
|
RU2181781C2 |
| PROCEDURE FOR PROCESSING CONCENTRATES CONTAINING NOBLE METALS AND SULPHIDES | 2008 |
|
RU2395598C1 |
| METHOD OF PROCESSING CONCENTRATES CONTAINING NOBLE METALS | 2001 |
|
RU2215802C2 |
| METHOD FOR PROCESSING PYRITE-CONTAINING MATERIALS | 1993 |
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RU2094494C1 |
