Cleaning method of uranium hydrometallurgy fixed bed ion exchange resin

An ion exchange resin and ion exchange technology, applied in the direction of ion exchange bed cleaning/flushing, ion exchange, ion exchange regeneration, etc., can solve the problems of inconvenient operation, large resin loss, and inability to disperse resin, and achieve low crushing rate and easy operation. Convenience and low resin loss

Active Publication Date: 2011-11-02
NANHUA UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Take out the resin from the fixed bed ion exchange tower for cleaning, the loss of the resin is large, and the operation is inconvenient; directly wash in the tower with water, the hardened resin cannot be dispersed, and the sediment in the resin cannot be cleaned.

Method used

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  • Cleaning method of uranium hydrometallurgy fixed bed ion exchange resin
  • Cleaning method of uranium hydrometallurgy fixed bed ion exchange resin

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Embodiment Construction

[0016] A cleaning method for uranium hydrometallurgical fixed bed ion exchange resin, which is to set an independent cleaning tower 1 outside the uranium hydrometallurgical fixed bed ion exchange system, and clean the resin in the exchange tower 4 that needs to be cleaned through the cleaning tower 1 . In this embodiment, the uranium hydrometallurgical fixed bed ion exchange system includes eight fixed bed ion exchange towers 4.

[0017] The specific operation process is as follows:

[0018] A. Connect the exchange tower 4 in the fixed bed ion exchange system with the resin transfer shut-off valve 1-1 on the cleaning tower 1 through a pipeline, and then open the resin transfer shut-off valve 1-1, and use backflush water to clean the exchange tower The resin in 4 is introduced into the cleaning tower 1 through the resin transfer stop valve 1-1, and the resin transfer stop valve 1-1 is closed after the resin transfer is completed.

[0019] B. Open the exhaust and drain valve 1-2 on t...

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Abstract

The invention relates to a cleaning method of uranium hydrometallurgy fixed bed ion exchange resin, and is characterized by arranging a separate uranium hydrometallurgy fixed bed ion exchange resin cleaning tower in a uranium hydrometallurgy fixed bed ion exchange system, and cleaning the resin to be cleaned in the fixed bed ion exchange tower by the cleaning tower, wherein the washing tower and the fixed-bed ion exchange tower are connected through a pipeline, thus transferring the resin to be cleaned from the fixed bed ion exchange tower to the cleaning tower and cleaning the resin or poisoned resin in the cleaning tower. By cleaning, the hardened resin is effectively dispersed, sediment in the resin is cleaned and the poisoned resin is detoxified; the cleaning efficiency is not less than 95%; and the cleaning method is simple to operate and has the good effects of low resin loss rate and low damage rate.

Description

Technical field [0001] The invention relates to a method for cleaning resin in the ion exchange process of uranium hydrometallurgy, in particular to a method for cleaning silt in the resin, dispersing hardened resin and detoxification of poisoned resin in the process of ion exchange in a fixed bed ion exchange of uranium hydrometallurgy. Background technique [0002] The device in which the ion exchange reaction occurs in the uranium hydrometallurgical process is called an ion exchange tower, which is used to separate and extract uranium from the leachate 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 contained in the adsorbed stock solution and the precipitation produced during the adsorption process will be deposited in the resin layer, resulting in resin compaction . When the resin in the fixed bed ion exchange tower runs for a long time, the resin is po...

Claims

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Application Information

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IPC IPC(8): B01J49/00B01J49/60
Inventor 雷泽勇王清良史文革胡鄂明雷林刘清张洪灿李庚
Owner NANHUA UNIV
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