FIELD: chemistry.
SUBSTANCE: invention pertains to the technology of rare and radioactive elements; solves the problem of decomposing monazite. The method of decomposing monazite involves its treatment in molten salts at temperature ranging from 400°C to 900°C and phosphorous removal. The salts used during treatment are nitrates of alkaline metals (MeNO3), and phosphorous removal is done by separation of the clear phase of the smelt and/or lightening the phosphate of alkaline metal (Na or K) in a water solution.
EFFECT: low treatment temperature and provision for separation of phosphorous as a commercial product.
5 cl, 1 tbl, 6 ex
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD OF EXPLOSION OF MONACTIVES CONCENTRATE | 2016 |
|
RU2620229C1 |
| METHOD OF PROCESSING MONAZITE CONCENTRATE | 2013 |
|
RU2549412C1 |
| METHOD OF PROCESSING OF FERROUS RARE-EARTH PHOSPHATIC ORES | 2013 |
|
RU2551332C1 |
| METHOD OF RECOVERING RARE-EARTH METALS FROM MINERAL PHOSPHATE MATERIAL | 1996 |
|
RU2092602C1 |
| METHOD OF PROCESSING MONAZITE | 2019 |
|
RU2704677C1 |
| METHOD FOR BIFLUORIDE TREATMENT OF RARE AND RARE-EARTH MINERAL MATERIAL | 2014 |
|
RU2576710C1 |
| METHOD FOR EXTRACTING La (III) FROM AN AQUEOUS SOLUTION OF LANTHANUM (III) NITRATE OBTAINED DURING MONAZITE PROCESSING | 2021 |
|
RU2760693C1 |
| METHOD OF MONAZITE RECYCLING | 2005 |
|
RU2323989C2 |
| METHOD OF PROCESSING MONAZITE RAW MATERIALS | 2017 |
|
RU2667932C1 |
| METHOD FOR PROCESSING COMPLEX ORE CONTAINING NIOBIUM AND RARE EARTH ELEMENTS AS MAIN COMPONENTS | 2020 |
|
RU2765647C2 |
