湿法冶金
濕法冶金
습법야금
HYDROMETALLURGY OF CHINA
2014年
6期
453-456
,共4页
废催化剂%酸浸液%钒%TOA%萃取
廢催化劑%痠浸液%釩%TOA%萃取
폐최화제%산침액%범%TOA%췌취
waste catalyst%acidic leaching solution%vanadium%TOA%extraction
研究了用TOA作萃取剂从废钒催化剂酸浸液中萃取钒，考察了各影响因素对钒萃取率的影响，确定了最佳萃取参数。试验结果表明：用10％ TOA＋4％癸醇＋86％磺化煤油作萃取剂，在水相pH＝2．5、有机相与水相体积比（V o ∶V a ）＝1∶3、萃取时间2．5 min、静置时间5 min条件下，钒的单级萃取率高达95．2％；用0．6 mol／L Na2 CO3溶液进行2级反萃取，钒的反萃取率在99％以上；反萃取液可直接沉淀钒，产品V2 O5质量达到GB3283—1987冶金99级标准。萃余液可集中处理。该工艺简单，综合效益显著。
研究瞭用TOA作萃取劑從廢釩催化劑痠浸液中萃取釩，攷察瞭各影響因素對釩萃取率的影響，確定瞭最佳萃取參數。試驗結果錶明：用10％ TOA＋4％癸醇＋86％磺化煤油作萃取劑，在水相pH＝2．5、有機相與水相體積比（V o ∶V a ）＝1∶3、萃取時間2．5 min、靜置時間5 min條件下，釩的單級萃取率高達95．2％；用0．6 mol／L Na2 CO3溶液進行2級反萃取，釩的反萃取率在99％以上；反萃取液可直接沉澱釩，產品V2 O5質量達到GB3283—1987冶金99級標準。萃餘液可集中處理。該工藝簡單，綜閤效益顯著。
연구료용TOA작췌취제종폐범최화제산침액중췌취범，고찰료각영향인소대범췌취솔적영향，학정료최가췌취삼수。시험결과표명：용10％ TOA＋4％계순＋86％광화매유작췌취제，재수상pH＝2．5、유궤상여수상체적비（V o ∶V a ）＝1∶3、췌취시간2．5 min、정치시간5 min조건하，범적단급췌취솔고체95．2％；용0．6 mol／L Na2 CO3용액진행2급반췌취，범적반췌취솔재99％이상；반췌취액가직접침정범，산품V2 O5질량체도GB3283—1987야금99급표준。췌여액가집중처리。해공예간단，종합효익현저。
Solvent extraction of vanadium from acidic leaching solution of waste catalyst containing vanadium using TOA as extractant was researched . The optimum process parameters were determined .The results show that using the 10% TOA + 4% decanol+ 86% sulfonated kerosene as extraction agent ,at the conditions of aqueous phase pH of 2 .5 ,the volume ratio between organic phase and aqueous phase of 1∶3 ,contact time of 2 .5 min ,holding time of 5 min ,single stage extraction of vanadium is up to 95 .2% .Using 0 .6 mol/L Na2 CO3 solution and be two stages back‐extraction ,the 99% of vanadium in organic phase was stripped .The stripping liquid can be directly precipitated vanadium .Calcining the precipitate can acquire V2 O5 product with GB3283 -1987 metallurgical grade 99 standard .The extraction raffinate is centralized processing .The process is simple and has remarkable comprehensive benefit .
