Compositions – Radioactive compositions
Patent
1991-01-31
1993-12-07
Walsh, Donald P.
Compositions
Radioactive compositions
209 2, 209 18, 209456, 209457, G21F 900, B03B 528
Patent
active
052681289
ABSTRACT:
Particulate material is treated by first washing the contaminated material with a contaminant mobilizing solution comprising a leaching agent, a surfactant or a mixture thereof. Large particles, typically greater than 5 mm are mechanically separated, washed with water and returned to the site as recovered soil. Fines, along with contaminants dissolved or dispersed in the contaminant mobilizing solution are separated from intermediate sized particles by a countercurrent flow of the contaminant mobilizing solution, preferably in a mineral jig. The intermediate sized particles are then abraded in an attrition scrubber to dislodge attached mineral slimes or fines. These additional fines are separated from the intermediate sized particles with a countercurrent flow of wash water in a second mineral jig. The preferred oxidizing agent is chlorine, and hydrogen is the preferred reducing agent.
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Grant David C.
Lahoda Edward J.
Jenkins Daniel
Walsh Donald P.
Westinghouse Electric Corp.
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