Resin-in-pulp process

Fig. 21.12. Uranium ore mill processes (A) carbonate leach, caustic precipitation process (B) acid leach, ion exchange and acid leach, solvent extraction processes (C) acid leach, resin-in-pulp process.

Carman (C6) described the successful development and application to a uranium resin-in-pulp process of a continuous countercurrent ion-exchange pilot plant. This new technique is based on the observation that the resins at the correct level of air agitation float in close proximity to the surface of the pulp. So long as the resin beads are able to move about gently but freely in the surface layer, a satisfactory rate of ion exchange is possible. Under this condition, the mechanical damage to the resin due to attrition is negligible. 

FIGURE 13.3-9 Stirred-tank resin-in-pulp process similar technology is used for adsorption with activated car-b(ni. 

One feature of resin-in-pulp processes which is unsatisfactory is the high rate of attrition of the resin beads compared with a static column process. Resin manufacturers are, however, now designing resins specifically for resin-in-pulp processes. The Permitit resin SKB has, for example, been recommended for this purpose. ... 

Hollis, R. F. and McArthur, C. K. The resin in-pulp process for recovery of uranium. Proc. 1st. Int. Corf, on the Peaceful Uses of Atomic Energy, Geneva, 1955. Paper 526. 

U.K. Atomic Energy Authority. Method of Recovery of Uranium by a Resin-in-Pulp Process. U.K. Patent 807094 (filed 13/6/SS, completed 7/1/59). 

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