发明名称 APERFEICOAMENTO EM PROCESSO PARA RECUPERACAO DE URANIO E PROCESSO PARA PURIFICACAO DO ACIDO FOSFORICO
摘要 <p>Recovery of U from wet-process H3PO4 solns. is affected by (a) washing the soln. with a hydrocarbon having a b. pt. of 150-300 degrees C (pref. kerosene) to remove sludge-forming components; (b) separating the resulting sludge phase from the purified H3PO4 soln; and (c) extracting U from the H3PO4 soln. The hydrocarbon wash treatment prevents sludge formation during ext. without the high maintenance costs associated with the use of conventional filters. The kerosene/H3PO4 vol. ratio during step (a) is pref. 1-3:1. The sludge phase is pref. decanted off and filtered to recover kerosene for recycle to the next washing operation.</p>
申请公布号 BR7705997(A) 申请公布日期 1978.07.18
申请号 BR19777705997 申请日期 1977.09.09
申请人 WESTINGHOUSE ELECTRIC CORP 发明人 HOLLEMAN R;LYON W;BARREIRO A;RANDELL C
分类号 C01B25/238;C01G43/00;C22B60/02;(IPC1-7):C01B25/22 主分类号 C01B25/238
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