Improvements in or relating to ion-exchange processes

Improvements in or relating to ion-exchange processes

In a "resin-in-pulp" ionexchange process for recovering metal values from an ore pulp, the ion-exchanger is in the form of one or more upwardly-extending sheets and the solid particles present in the pulp are maintained in suspension by the upward passage of a gas through the pulp. The inv...

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Hauptverfasser: WELLS RONALD ARTHUR, NORTH ALAN ARTHUR, BEAUMONT JOHN HENRY
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CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY
PERFORMING OPERATIONS
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
SEPARATION
THEIR RELEVANT APPARATUS
TRANSPORTING
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creator WELLS RONALD ARTHUR
NORTH ALAN ARTHUR
BEAUMONT JOHN HENRY
description In a "resin-in-pulp" ionexchange process for recovering metal values from an ore pulp, the ion-exchanger is in the form of one or more upwardly-extending sheets and the solid particles present in the pulp are maintained in suspension by the upward passage of a gas through the pulp. The invention is particularly applicable to the recovery of uranium by anion exchange from a pulp formed by leaching a uranium ore with sulphuric acid to form a pulp having a pH of 1.5 and a solid content of 60% by weight. Uranium may be removed from such a pulp by contact with a strong base quaternary ammonium resin in bead form bonded together by polyethylene. Elution may be effected with a solution of N sodium chloride, N/10 with respect to sulphuric acid. The apparatus is shown in section in Fig. 2 where a contacting vessel 1 with a conical bottom 5 is provided with vertical sheets 2 of ion-exchange material. Pulp enters and leaves the vessel through channels at the top, as shown at 4, and circulation is effected by blowing air from pipe 10 through a perforated plate 6 whereby the pulp circulates up through the mineral of the vessel and down adjacent the walls.
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subjects CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY
PERFORMING OPERATIONS
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
SEPARATION
THEIR RELEVANT APPARATUS
TRANSPORTING
title Improvements in or relating to ion-exchange processes
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