FIELD: metallurgy.
SUBSTANCE: method includes mixing of source concentrate with calcium oxide CaO and calcium peroxide CaO2 and burning in two stages. At the first stage burning is carried out at temperature of 350-500°C within 30-40 minutes, at the second stage - at temperature of 500-800°C during 30-60 minutes. After burning there is performed leaching of non-ferrous metals out of cinder. Consumption of calcium oxide CaO is 50-100% from stoichometric required for binding sulphur into gypsum while consumption of calcium peroxide CaO2 is 1-10% from concentrate weight.
EFFECT: increased extraction of non-ferrous metals and reduced duration of cinder leaching.
2 cl, 2 tbl, 2 ex
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD OF PROCESSING SULPHIDE AND MIXED MOLYBDENUM-CONTAINING CONCENTRATES FOR EXTRACTION OF MOLYBDENUM AND RHENIUM | 2009 |
|
RU2393253C1 |
| METHOD FOR PROCESSING MOLYBDENITE-CONTAINING CONCENTRATES | 2018 |
|
RU2696989C1 |
| METHOD FOR PROCESSING OF SULPHIDE AND MIXED MOLYBDENUM-CONTAINING CONCENTRATES | 2013 |
|
RU2536615C1 |
| THERMOHYDROMETALLURGICAL METHOD OF COMPLEX PROCESSING OF PURITIC ORE COPPER CONCENTRATE AND EXTRACTION OF NON-FERROUS AND NOBLE METALS | 2004 |
|
RU2255126C1 |
| METHOD OF COMPLEX PROCESSING OF PYRITIC RAW MATERIALS | 2016 |
|
RU2627835C2 |
| METHOD OF PRODUCING OF HIGH PURITY COPPER | 2017 |
|
RU2667927C1 |
| METHOD OF PROCESSING COPPER-SULFIDE ORES AND/OR CONCENTRATES | 2000 |
|
RU2173726C1 |
| METHOD FOR PROCESSING COPPER-CONTAINING MATERIALS WITH RELEASE OF PRECIOUS METAL CONCENTRATE | 2020 |
|
RU2745389C1 |
| EXTRACTION OF Fe, Mn, Ni, Co, Cu, Al FROM CAKE OBTAINED AFTER SODA SINTERING AND LEACHING OF TUNGSTEN CONCENTRATE, BY CALCINATION WITH TABLE SALT AND HYDROCHLORIC ACID LEACHING WITH PEROXIDE | 2019 |
|
RU2701229C1 |
| GOLD EXTRACTION PROCESS FROM SULFIDE ORES AND CONCENTRATES | 2006 |
|
RU2307181C1 |
