자원리싸이클링 (Resources Recycling)
- 제7권1호
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- Pages.27-33
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- 1998
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- 2765-3439(pISSN)
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- 2765-3447(eISSN)
컬럼식 연속추출장치에 의한 산세폐액중 Ni의 회수
Recovery of Nickel from Waste Pickling Solution with Column Extractor
초록
유리질산 및 불산이 제거된 산세폐액으로부터 Ni을 회수하기 위하여 컬럼식 연속추출장치에 의한 연속실험을 수행하였다. 먼저 Ni 회수 실험에 앞서 폐액중 다량 함유되어 있는 Fe나 Cr을 효과적으로 침전 제거하기 위해서는 중화제로
A study on thc recovcry oi nickel from waste pickling solutions removed li-ee nil~ica cid and hydmflnoric acid is carried out with pulsed column extractor for thc industrial application. The ~esults show that thc Iron and chromium arc efteclively elunmatcd from the waste solution by precipitalion as the form of hydraxidc with thc adjustment of pH with CaCO;, whlle the nickel is not prcc~pitatcd. Thc cxlraction eficicncy ol nickel with column cxtraclor generally improves 8s the pulse velosity (product of amplmde and frequency) incrcascs, optimum pcrfarmancc typically occuring slightly below an amplihldefrecluency product which results in flooding the column because of excessive emulsiIicalian And the nickel loaded in the organic is erfeclively conce~~trtratebdy ZM H2S0,, ~ I It he stlipping stage. The solubility of NiSO, in the H,SO, solution dccreaaes w~th thc higher H,SO, concentralion and appears to be 55 grL in the 2M HSO* solulian.
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