TRACCIA DALL'ACQUA, SPECIALMENTE PROCEDIMENTO E DISPOSITIVO PERDALL'ACQUA MARINA. L'ARRICCHIMENTO DI SOSTANZE DI

摘要

For the concentration of materials such as uranium, present in trace quantities in water, especially sea water, carrier bodies able to take up the material from the water are released into it so that their density causes them to sink downwardly or float upwardly to a collection region from whence they are transferred to a chemical plant for removing the trace material concentrated on them. The bodies can then be recycled for release once again from the original discharge point. To avoid abrasion of material providing sites for the uptake of the trace material to be concentrated, this material can be located on surfaces set inwardly from the periphery of the carrier bodies. A ring shape for the carrier bodies gives advantageous flow of water around the bodies.