FIELD: metallurgy; complex processing of copper concentrate.
SUBSTANCE: proposed method includes sulphatizing roasting of starting concentrate and leaching-out of cinder at separation of metals; sulphatizing roasting of starting copper concentrate is performed in air at temperature of 500-600°C continued for 980-180 min; cinder thus obtained is leached-out with sulfuric acid solution or water at separation of cake and filtrate; copper is extracted from filtrate by electrolysis. Dried cake is blended with oxidizing agent and chlorides of alkaline and alkaline-earth metals and is subjected to heat treatment at temperature of 450-550°C for obtaining the cake which is leached-out by hydrochloric acid; noble metals are separated from filtrate by sorption method.
EFFECT: enhanced efficiency of extraction of metals; reduced power requirements; enhanced ecological safety.
9 cl, 1 dwg, 1 tbl, 3 ex
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD OF COMPLEX PROCESSING OF PYRITIC RAW MATERIALS | 2016 |
|
RU2627835C2 |
| METHOD FOR PROCESSING SULPHIDE NICKEL CONCENTRATES | 2015 |
|
RU2588904C1 |
| PROCESSING METHOD OF SULPHIDE CONCENTRATES CONTAINING PRECIOUS METALS | 2012 |
|
RU2506329C1 |
| METHOD FOR PROCESSING COPPER-CONTAINING MATERIALS WITH RELEASE OF PRECIOUS METAL CONCENTRATE | 2020 |
|
RU2745389C1 |
| PROCESSING OF NICKEL SULPHIDE STOCK | 2013 |
|
RU2533294C1 |
| METHOD OF LEACHING PYRITE CONTAINING RAW MATERIALS | 2017 |
|
RU2651017C1 |
| METHOD OF PRODUCING OF HIGH PURITY COPPER | 2017 |
|
RU2667927C1 |
| METHOD FOR SELECTIVE EXTRACTION OF NOBLE METALS FROM GOLD-BEARING CEMENTATE | 2021 |
|
RU2775555C1 |
| METHOD OF PROCESSING OF SULPHIDE CONCENTRATES | 2007 |
|
RU2337162C1 |
| METHOD OF PROCESSING SILVER-CONTAINING CONCENTRATES | 2013 |
|
RU2532697C2 |
