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 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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