Ion exchange resin cleaning tower for uranium hydrometallurgy fixed bed

Abstract

The invention discloses an ion exchange resin cleaning tower for a uranium hydrometallurgy fixed bed. The cleaning tower comprises a tower body and a base, wherein a liquid outlet pipe, an outlet liquid filtration device and a liquid outlet pipe cover plate with a backwash water inlet / outlet connector are arranged on the bottom of the tower body; a filtration layer is paved on the bottom of the tower body; the cylindrical wall of the tower body is provided with a sand discharge valve, two gas-water pipe seats and two gas-water pipe connectors; a gas-water pipe with a plurality of gas-water holes is arranged in axle holes of the two gas-water pipe seats and the two gas-water pipe connectors respectively; and the gas-water pipes are fixed and positioned by gas-water pipe positioning cover plates which are arranged on the gas-water pipe seats through bolts; the upper end of the tower body is provided with a resin transfer shutoff valve and a gas and water discharge valve respectively; and the cylindrical wall of the tower body is provided with a manhole with a cover plate. During cleaning, an exchange column and the shutoff valve on the cleaning tower are connected through a pipeline, and resins in the exchange column are led into the cleaning tower through the shutoff valve, are cleaned, and are transferred back to the exchange column by using backwash water after the cleaning is finished.

Description

technical field [0001] The invention relates to a special equipment for cleaning resin in the ion exchange process of uranium hydrometallurgy, in particular to the special equipment for cleaning silt in resin, dispersing hardened resin and cleaning poisoned resin in the ion exchange process of uranium hydrometallurgy fixed bed. Background technique [0002] The device where the ion exchange reaction occurs in the process of uranium hydrometallurgy is called an ion exchange tower, which is used to separate and extract uranium from the leaching solution of uranium ore. The fixed bed ion exchange tower uses ion exchange resin to operate under static conditions. During the ion exchange adsorption process, the fine sediment mixed in the adsorption raw solution and the precipitation generated during the adsorption process will all be deposited in the resin layer, resulting in resin compaction. . After the resin in the fixed bed ion exchange tower has been running for a long time,...

AI Technical Summary

Problems solved by technology

The resin is taken out from the fixed bed ion exchange tower for cleaning, and the resin loss is relatively large; if it is washed directly in the tower with water, the compacted resin cannot be separated, and the sediment in the resin cannot be cleaned.

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