C - Chemistry – Metallurgy – 01 – B
Patent
C - Chemistry, Metallurgy
01
B
53/216, 23/72
C01B 25/18 (2006.01) C22B 60/02 (2006.01)
Patent
CA 1115484
ABSTRACT Prior to the solvent extraction of uranium from wet-process phosphoric acid the pretreatment of acid is necessary for an efficient and successful operation. The suspended solids in the acid solution is first removed effi- ciently with an inclined-corrugated-plate separator without addition of chemical reagents and then the organic matter in the solution is extracted with kerosene. A very clear acid solution is obtained. The concentrated sludge can be returned to the phosphoric acid plant and the crud organic matter form- ed as a third phase between the organic and the aqueous phases produced in the kerosene washing in the settler chambers is withdrawn and treated in a centrifugal separator to recover the Kerosene. The recycled kerosene can be used as a good diluent in the subsequent uranium solvent extraction process.
311382
Chang Sir-Sea
Chen Yu-Cheng
Chern Sheng-Laang
Kuo Tsai-Shu
Ting Gann
Institute Of Nuclear Energy Research
Ridout & Maybee Llp
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