发明名称 |
METHOD OF EXTRACTING RARE-EARTH ELEMENTS FROM PHOSPHOGYPSUM |
摘要 |
FIELD: chemistry.SUBSTANCE: invention relates to the technology of producing compounds of rare-earth elements during complex processing of apatites, particularly extraction of rare-earth elements from phosphogypsum. The method involves preparation of pulp from phosphogypsum and sorption of rare-earth elements on a sorbent. The pulp is prepared from ground phosphogypsum and sulphuric acid solution with pH=0.5-2.5 until achieving liquid:solid ratio of 4-7. Sorption is carried out directly from the phosphogypsum pulp on a sorbent with sulphuric acid functional groups for 5-7 hours with solid:sorbent ratio of 4-7.EFFECT: high efficiency of the method owing to higher extraction of rare-earth elements without a filtration step.6 tbl, 6 ex |
申请公布号 |
RU2473708(C1) |
申请公布日期 |
2013.01.27 |
申请号 |
RU20110133281 |
申请日期 |
2011.08.09 |
申请人 |
FEDERAL'NOE GOSUDARSTVENNOE AVTONOMNOE OBRAZOVATEL'NOE UCHREZHDENIE VYSSHEGO PROFESSIONAL'NOGO OBRAZOVANIJA "URAL'SKIJ FEDERAL'NYJ UNIVERSITET IMENI PERVOGO PREZIDENTA ROSSII B.N. EL'TSINA" |
发明人 |
RYCHKOV VLADIMIR NIKOLAEVICH;KIRILLOV EVGENIJ VLADIMIROVICH;SMIRNOV ALEKSEJ LEONIDOVICH;JAZEV VALERIJ AFONAS'EVICH;IVAN'KO VIKTOR ALEKSEEVICH |
分类号 |
C22B59/00;C22B3/08;C22B3/24 |
主分类号 |
C22B59/00 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|