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Method for extracting sodium salt in cesium salt and rubidium salt production process

A sodium salt and rubidium salt technology, applied in chemical instruments and methods, rubidium/cesium/francium compounds, liquid solution solvent extraction, etc., can solve problems such as low concentration, increased labor costs, long production cycle, etc., to achieve environmental governance , Improve production efficiency and reduce enterprise costs

Inactive Publication Date: 2014-09-03
上海离岛电子新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] In the prior art, there are two methods for producing cesium salt: one is alkaline production, and the disadvantages of current alkaline production are: the technical requirements for equipment are too high, the reaction temperature is too high and the time is long, and the temperature reaches 900℃, the resulting energy consumption is also high, and the final product needs to be made by chemical method, and the pollution of the remaining material liquid is relatively serious; another disadvantage is that the traditional alkaline production is one product, one pot, Reproduction requires re-feeding, which increases the cost of raw materials. After production, the waste liquid and waste residue cannot be recycled because of too high impurities. They can only be entrusted to qualified professional companies for processing, so the cost of transportation and three wastes treatment increases again.
The other is acid production. The disadvantages of current acid production are: the process from feeding to production is too long, boiling for up to 16 hours, which seriously affects the production cycle, increases labor costs, and needs to be added when removing impurities. Barium hydroxide octahydrate, this type of barium salt is toxic, and its safety cannot be guaranteed. During the production process, water needs to be continuously added to maintain the volume, and the operability is poor. Therefore, this method is easy to cause low concentration, poor safety, and excessive production cycle. Long, the defect that the cost of the three wastes treatment is too high
As for the preparation of rubidium salt, there is no relevant report on the market at present, only cesium and rubidium salt solution, or the mixed solution of cesium and rubidium salt solution and the saturated solution of alkali metal or alkaline earth metal salt

Method used

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  • Method for extracting sodium salt in cesium salt and rubidium salt production process
  • Method for extracting sodium salt in cesium salt and rubidium salt production process
  • Method for extracting sodium salt in cesium salt and rubidium salt production process

Examples

Experimental program
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Effect test

Embodiment 1

[0047] The first stage of cesium salt production: leaching cesium and rubidium-containing ores in the container, the reactor temperature is 85°C, soaking time is 6 hours, cooling and crystallization, adding lye and sodium hydroxide to the obtained leaching liquid to adjust the pH value to 13 , filtered to obtain the stock solution containing cesium salt, rubidium salt and crystals containing sodium salt; after that, the stock solution was extracted by adding extractant T-BAMBP, the concentration of the extractant was 1mol / L, and the weight ratio of the extractant to the stock solution was 4:3 After layering, the lower layer of the raffinate is put into the second multistage circulation extraction box and the extractant T-BAMBP is added to extract, the concentration of the extractant is: 1mol / L, and the weight ratio of the extractant to the stock solution is 4: 3. Then add carbon dioxide 150g / L with a purity of ≥99% and high-purity water above 15Ω into the stripping container to...

Embodiment 2

[0053] The first stage: Leach the ore containing cesium and rubidium in the container, the temperature of the reactor is 85 ℃, the soaking time is 6 hours, the pH value is adjusted to 12, and the material liquid containing crystallization is filtered after cooling down to crystallize to obtain cesium-containing Salt, the stock solution of rubidium salt and the crystallization containing sodium salt, add extraction agent T-BAMBP to stock solution and extract, described extractant concentration is 1mol / L, and the weight ratio of extractant and stock solution is 4: 3, after layering, separate The lower floor solution after one extraction is put into the second multistage circulation extraction box and adds the extraction agent T-BAMBP to extract, the concentration of the extraction agent is 1mol / L, and the weight ratio of the extraction agent to the stock solution is 4: 3, and then in Add 145g / L of carbon dioxide with a purity of ≥99% and high-purity water above 15Ω into the back-...

Embodiment 3

[0059] The first stage: leaching the ore containing cesium and rubidium in the container, the temperature of the reactor is 85 ℃, the soaking time is 6 hours, the pH value is adjusted to 12 with lye, and the material liquid containing the crystal is filtered after cooling down and crystallizing. The stock solution containing cesium salt and rubidium salt and the crystal containing sodium salt were obtained. Afterwards, extracting agent T-BAMBP is added to stoste to carry out extraction, and described extracting agent concentration is 1mol / L, and the weight ratio of extracting agent and stock solution is 4: 3, after layering, the lower layer liquid of primary raffinate is squeezed into the second The extractant T-BAMBP is added into the multi-stage circulation extraction box for extraction, the concentration of the extractant is 1mol / L, the weight ratio of the extractant to the stock solution is 4:3, and then the extractant is added into the stripping container with a purity of ...

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Abstract

The invention relates to a method for producing cesium salt and rubidium salt based on zero discharge and continuous extraction, which comprises the following steps: pretreating ores containing cesium and rubidium in a container by a leaching process, adding alkali liquor into the obtained liquid to regulate the pH value to 11-13, adding an extractant, carrying out back washing on the supernatant solution containing caesium ions after extraction to obtain the cesium salt solution of the corresponding acid, and carrying out centrifugal drying to prepare the cesium salt; and sending the understratum solution containing rubidium ions after extraction into a second continuous extraction box for extraction, carrying out back washing on the supernatant solution containing rubidium ions after extraction to obtain a rubidium salt solution of the corresponding acid, carrying out centrifugal drying to obtain the rubidium salt, and putting the etching solutions generated in the steps into raw material containers for use. The invention enhances the production efficiency, and implements the uninterrupted and continuous production of cesium salt and rubidium salt extraction; the discharge of three wastes is almost zero; and the filter cake crystal in the raw material feed stage can be recrystallized to extract the high-purity sodium salt.

Description

Technical field: [0001] The invention relates to a production method of cesium salt and rubidium salt, more specifically to a method for producing cesium salt and rubidium salt based on zero discharge and continuous extraction. Background technique: [0002] In the prior art, there are two methods for producing cesium salt: one is alkaline production, and the disadvantages of current alkaline production are: the technical requirements for equipment are too high, the reaction temperature is too high and the time is long, and the temperature reaches 900℃, the resulting energy consumption is also high, and the final product needs to be made by chemical method, and the pollution of the remaining material liquid is relatively serious; another disadvantage is that the traditional alkaline production is one product, one pot, Reproduction requires refeeding, which increases the cost of raw materials. After production, the waste liquid and waste residue cannot be recycled due to high...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D11/04C01D17/00
Inventor 沙丹张文清潘荣蔡体伟
Owner 上海离岛电子新材料有限公司