Preparation method of cesium sulfate and rubidium sulfate

A technology of rubidium sulfate and cesium sulfate, applied in chemical instruments and methods, rubidium/cesium/francium compounds, alkali metal compounds, etc., can solve problems such as waste of resources, and achieve the effect of saving energy, being conducive to recycling and applying, and having fewer types

Inactive Publication Date: 2019-12-10
YICHUN KEYUAN CHEM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When lepidolite is treated with sulfuric acid, mixed alum by-products containing rubidium, cesium, and potassium can be obtained. Domestic manufacturers of lithium salts that use lepidolite as raw materials often ignore the extraction of rubidium and cesium salts when extracting lithium, and the obtained rubidium-containing , Cesium by-products are often sold at low prices, resulting in a waste of resources

Method used

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preparation example Construction

[0021] The invention discloses a process method for preparing cesium sulfate and rubidium sulfate. Those skilled in the art can learn from the contents of this article and appropriately improve process parameters to realize the process. In particular, it should be pointed out that all similar replacements and modifications are obvious to those skilled in the art, and they are all considered to be included in the present invention. The method and application of the present invention have been described through preferred embodiments, and the relevant personnel can obviously make changes or appropriate changes and combinations to the method and application described herein without departing from the content, spirit and scope of the present invention to realize and Apply the technology of the present invention.

[0022] Unless otherwise specified, the raw and auxiliary materials involved in the present invention are common commercially available products, which can be obtained thr...

Embodiment 1

[0026] Grinding activation: take 200g of coarsely broken lepidolite (particle size is controlled below 80 mesh), add 2 times the water of lepidolite quality to make slurry, and add 2.5% polyethylene glycol to the slurry after slurrying. Glycol, then above-mentioned material is carried out in ball mill and carries out wet type ultra-fine grinding 8 hours and obtains fine grinding material a;

[0027] Ultrasonic acidizing leaching: add sulfuric acid solution with a concentration of 35wt% to the fine abrasive a, mix the fine abrasive and sulfuric acid solution evenly in a mass ratio of 1:5, and perform leaching under ultrasonic conditions. The temperature is 20KHz~28KHz, the temperature is 70°C, and the leaching time is 10min. After the leaching is completed, filter to obtain the residue and filtrate; the residue is washed twice with a small amount of water and discarded, and the water washing liquid is combined into the filtrate to obtain the leachate b;

[0028] Alkalization an...

Embodiment 2

[0035]Grinding activation: take 200g of coarsely broken lepidolite (particle size is controlled below 80 mesh), add 3.5 times the water of lepidolite quality to make slurry, and add 5% polyethylene glycol to the slurry after slurrying. Glycol, then above-mentioned material is carried out wet ultrafine fine grinding in ball mill 10 hours and obtains fine grinding material a;

[0036] Ultrasonic acid leaching: Add sulfuric acid solution with a concentration of 55wt% to the fine abrasive a, mix the fine abrasive and sulfuric acid solution evenly in a mass ratio of 1:3, and perform leaching under ultrasonic conditions, set the ultrasonic power to 100W-150W, and the ultrasonic frequency The temperature is 20KHz-28KHz, the temperature is 100°C, and the leaching time is 15min. After the leaching is completed, filter to obtain the residue and filtrate; the residue is washed twice with a small amount of water and then discarded, and the washing liquid is combined with the filtrate to ob...

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Abstract

The invention relates to the technical field of mineral extraction, in particular to a preparation method of cesium sulfate and rubidium sulfate. A traditional cesium sulfate extraction method is improved, cesium is extracted from lithium-precipitation waste residue firstly by taking t-BAMBP and 260# solvent oil with the specific ratio as extraction solutions and through a multistage extraction technology, a cesium sulfate pure product is obtained, and the product purity reaches up to 99.9% or above; and then rubidium and potassium can be separated from raffinate of cesium extraction by adopting the t-BAMBP and n-hexane with the specific ratio as extraction solutions, the high-purity rubidium sulfate is obtained, and the purity can reach up to 99.9% or above. The preparation process involves a few types of organic solvents, and waste liquid is treated, recycled and reused advantageously.

Description

technical field [0001] The invention relates to the technical field of mineral extraction, in particular to a preparation method of cesium sulfate and rubidium sulfate. Background technique [0002] Due to its unique properties, rubidium and cesium play an important role in many high-tech fields such as aerospace, atomic energy, biology and energy. Its application and development have attracted more and more attention. hotspots. [0003] Rubidium and cesium usually exist in other minerals, and often coexist with lithium, potassium and other metal elements. Lepidolite is rich in lithium, potassium, rubidium, cesium and other elements. When lepidolite is treated with sulfuric acid, mixed alum by-products containing rubidium, cesium, and potassium can be obtained. Domestic manufacturers of lithium salts that use lepidolite as raw materials often ignore the extraction of rubidium and cesium salts when extracting lithium, and the resulting rubidium-containing , Cesium by-produ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01D17/00
CPCC01D17/00C01P2006/80
Inventor 席文龙周慧瑶彭平
Owner YICHUN KEYUAN CHEM CO LTD
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