FIELD: hydraulic metallurgy of thallium, possibly extraction and removing ions of non-ferrous metals from isotope-enriched thallium.
SUBSTANCE: method comprises steps of sorption of thallium from nitrate solutions; before sorption treating initial nitrate solutions with organic reducing agent such as alcohol or formaldehyde solution until pH 1.5 - 2.5; adding complexone II or III in quantity 1.2 - 1.5 mol of complexone per 1 mol of total quantity of impurities; correcting solution until pH 4 - 5 by means of ammonium; realizing desorption of thallium by means of ammonium sulfate solution (2 - 4 M) after preliminary removal of impurities from cationite by washing it with water and with solution of complexone II or III; or performing after-purification (after desorption) of eluates with use of anionite of epoxy-polyamine type.
EFFECT: lowered number of operations, reduced consumption of reagents, prevention of outbursts of harmful matters to atmosphere, improved effectiveness.
3 cl, 11 tbl, 11 ex
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD OF PRODUCING SCANDIUM OXIDE | 2015 |
|
RU2608033C1 |
| METHOD OF RECOVERING PALLADIUM FROM SOLUTIONS | 2003 |
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RU2248405C2 |
| METHOD OF EXTRACTION OF CESIUM FROM NITRATE SOLUTIONS | 1993 |
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RU2049545C1 |
| METHOD OF EXTRACTING RARE EARTH METALS FROM NITROPHOSPHATE SOLUTION IN NITRIC ACID PROCESSING OF APATITE CONCENTRATE | 2014 |
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RU2559476C1 |
| METHOD FOR EXTRACTING RARE EARTH METALS FROM PRODUCTIVE SOLUTIONS IN SULFURIC ACID LEACHING OF URANIUM ORES | 2018 |
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RU2674527C1 |
| TREATMENT METHOD OF REE PHOSPHATE CONCENTRATE | 2015 |
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RU2612244C1 |
| METHOD OF PRODUCING LITHIUM HYDROXIDE FROM BRINES AND PLANT FOR METHOD EMBODIMENT | 1998 |
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RU2193008C2 |
| METHOD OF DESORPTION OF METALS OUT OF CATION EXCHANGE RESINS | 0 |
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SU931266A1 |
| METHOD OF PROCESSING SCANDIUM-CONTAINING SOLUTIONS | 2001 |
|
RU2196184C2 |
| METAL DESORPTION PROCESS | 1997 |
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RU2116363C1 |
