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Title: SLURRY SOLVENT EXTRACTION PROCESS FOR THE RECOVERY OF METALS FROM SOLID MATERIALS

Abstract

A solvent extraction process is described for recovering uranium from low grade uranium bearing minerals such as carnotit or shale. The finely communited ore is made up as an aqueous slurry containing the necessary amount of acid to solubilize the uranium and simultaneously or subsequently contacted with an organic solvent extractant such as the alkyl ortho-, or pyro phosphoric acids, alkyl phosphites or alkyl phosphonates in combination with a diluent such as kerosene or carbon tetrachlorids. The extractant phase is separated from the slurry and treated by any suitable process to recover the uranium therefrom. One method for recovering the uranium comprises treating the extract with aqueous HF containing a reducing agent such as ferrous sulfate, which reduces the uranium and causes it to be precipitated as uranium tetrafluoride.

Inventors:
Issue Date:
Research Org.:
Originating Research Org. not identified
OSTI Identifier:
4255603
Patent Number(s):
2869979
Assignee:
U.S. Atomic Energy Commission DTIE; NSA-13-014124
NSA Number:
NSA-13-014124
Resource Type:
Patent
Resource Relation:
Other Information: Orig. Receipt Date: 31-DEC-59
Country of Publication:
United States
Language:
English
Subject:
TECHNOLOGY; ACIDS; ALKYL RADICALS; CARBON TETRACHLORIDE; CARNOTITE; CHEMICAL REACTIONS; HYDROCARBONS; HYDROFLUORIC ACID; IRON SULFATES; KEROSENE; ORGANIC ACIDS; PHOSPHORIC ACID; PHOSPHORUS COMPOUNDS; PRECIPITATION; RECOVERY; REDUCTION; ROCKS; SEPARATION PROCESSES; SHALES; SLURRIES; SOLIDS; SOLUTIONS; SOLVENT EXTRACTION; URANIUM; URANIUM MINERALS; URANIUM TETRAFLUORIDE; VANADIUM OXIDES; WATER

Citation Formats

Grinstead, R.R. SLURRY SOLVENT EXTRACTION PROCESS FOR THE RECOVERY OF METALS FROM SOLID MATERIALS. United States: N. p., 1959. Web.
Grinstead, R.R. SLURRY SOLVENT EXTRACTION PROCESS FOR THE RECOVERY OF METALS FROM SOLID MATERIALS. United States.
Grinstead, R.R. Tue . "SLURRY SOLVENT EXTRACTION PROCESS FOR THE RECOVERY OF METALS FROM SOLID MATERIALS". United States.
@article{osti_4255603,
title = {SLURRY SOLVENT EXTRACTION PROCESS FOR THE RECOVERY OF METALS FROM SOLID MATERIALS},
author = {Grinstead, R.R.},
abstractNote = {A solvent extraction process is described for recovering uranium from low grade uranium bearing minerals such as carnotit or shale. The finely communited ore is made up as an aqueous slurry containing the necessary amount of acid to solubilize the uranium and simultaneously or subsequently contacted with an organic solvent extractant such as the alkyl ortho-, or pyro phosphoric acids, alkyl phosphites or alkyl phosphonates in combination with a diluent such as kerosene or carbon tetrachlorids. The extractant phase is separated from the slurry and treated by any suitable process to recover the uranium therefrom. One method for recovering the uranium comprises treating the extract with aqueous HF containing a reducing agent such as ferrous sulfate, which reduces the uranium and causes it to be precipitated as uranium tetrafluoride.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1959},
month = {1}
}