EFFECT ON REAGENT CONSUMPTION OF RECYCLING SOLUTIONS IN THE WEAK ACID LEACHING OF A URANIUM ORE
An investgation was carried out to study the possibility of redacing the acid requirements in the leaching of uranium ores at controlled pH, by recycling a portion of the leach liquor as make-up solution with fresh ore. The work was carried out on a laboratory scale on a siliceous ore. Ore fineness, and quantity of oxidizing agent (sodium chlorate) added, were the two variables investigated. Acid consumption at pH 1.8 was reduced from 44.2 pounds per ton for the standard leach without recycling to 38.7 pounds per ton with recycling when the ore was ground to 75 to 80 percent minus 200 mesh, and, in the same comparison, from 37.3 pounds per ton to 29.7 pounds per ton when the ore was ground to 40 to 50 percent minus 200 mesh. Recycling also permitted a reduction of the amount of sodium chlorate required, for satisfactory leaching, from 3.0 to 1.5 pounds per ton. However, reducing the sodium chlorate reduced the amount of acid saved by recycling. Recycling had no ount of uranium extracted. (auth)
- Research Organization:
- Canada. Dept. of Mines and Technical Surveys. Mines Branch
- NSA Number:
- NSA-13-014943
- OSTI ID:
- 4242323
- Report Number(s):
- NP-7535; R-28
- Resource Relation:
- Other Information: Orig. Receipt Date: 31-DEC-59
- Country of Publication:
- Country unknown/Code not available
- Language:
- English
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