FIELD: chemistry.
SUBSTANCE: invention relates to ion exchange and can be used for sorption extraction of iron from salt solutions formed when processing aluminium-containing material using acid techniques. Extraction of iron to residual content of Fe2O3 in the purified solution of not more than 0.001% is carried out through sorption of iron with a cationite in H-form, containing aminodiacetic functional groups. The iron sorption and desorption steps are alternated without intermediate washing of the cationite. Iron is desorbed in counterflow conditions with nitric acid solution.
EFFECT: method enables elective extraction of iron, reduces acid consumption and prevents loss of aluminium in the process.
3 cl, 1 tbl, 6 ex
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD OF EXTRACTING RARE EARTH METALS FROM NITROPHOSPHATE SOLUTION IN NITRIC ACID PROCESSING OF APATITE CONCENTRATE | 2014 |
|
RU2559476C1 |
| METHOD OF PROCESSING NITRATE SALTS | 2013 |
|
RU2522343C1 |
| METHOD OF PURIFYING ACIDIC SALT SOLUTIONS CONTAINING ALUMINIUM NITRATE FROM IRON | 2011 |
|
RU2480413C2 |
| METHOD OF PURIFYING ALUMINIUM SALTS FROM IRON | 2011 |
|
RU2489353C2 |
| METHOD OF PROCESSING NEPHELINE | 2011 |
|
RU2460691C1 |
| METHOD OF PROCESSING RARE-EARTH ELEMENTS CONCENTRATE | 2015 |
|
RU2595672C1 |
| METHOD OF EXTRACTING RARE-EARTH ELEMENTS FROM WET-PROCESS PHOSPHORIC ACID WHEN PROCESSING KHIBINY APATITE CONCENTRATES | 2011 |
|
RU2528692C2 |
| PROCEDURE FOR COMPLEX PROCESSING NICKEL-COBALT RAW MATERIAL | 2009 |
|
RU2393251C1 |
| METHOD OF PURIFYING PHOSPHATE-FLUORIDE CONCENTRATE OF REE | 2013 |
|
RU2523319C1 |
| TREATMENT METHOD OF REE PHOSPHATE CONCENTRATE | 2015 |
|
RU2612244C1 |
