Basin arrangements for liquid-liquid extraction, equipment to be placed in a settling pool for liquid-liquid extraction and method for installing the equipment

摘要

Equipment to be placed in the settler (6) of liquid-liquid extraction. The equipment comprises an overflow chute (10) for receiving a first solution as an overflow from the settler; a first outlet box (15) that is placed on a lower level than the overflow chute and arranged to receive the first solution from the overflow chute; a collecting chute (12) that is positioned adjacently with the overflow chute for receiving the second solution as an underflow from the settler; rising pipes (13) that extend from the collecting chute to the settler for conducting the second solution to the collecting chute; level control valves (14) arranged in the rising pipes for adjusting the level of the second solution; and a second outlet box (15) that is placed on a lower level than the collecting chute and arranged to receive the second solution from the collecting chute. The overflow chute (10), the first outlet box (11), the collecting chute (12), the rising pipes (13), the level control valves (14) and the second outlet box (15) are interconnected in order to together form an essentially rigid self-supporting subassembly (16) that can as a uniform entity be separately transferred and installed on the settler bottom. The subassembly (16) is separately manufactured in a place of manufacture, transferred as a uniform entity to the site of installation, and installed on the bottom (5) of the settler (6).