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A method for obtaining rubidium salt from kaolin tailings

A technology of kaolin tailings and kaolin ore, which is applied in the field of mineral purification, can solve the problems of rarely finding and extracting rubidium, achieve the effects of green process, increase leaching rate, and avoid emulsification

Active Publication Date: 2017-12-22
HANGZHOUREADY BIOLOGICAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are few domestic studies on the extraction of rubidium from kaolin tailings

Method used

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  • A method for obtaining rubidium salt from kaolin tailings
  • A method for obtaining rubidium salt from kaolin tailings
  • A method for obtaining rubidium salt from kaolin tailings

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] The SEM spectrum of the used kaolin tailings rich in potassium feldspar and a small amount of muscovite and the X-ray diffraction energy spectrum analysis spectrum of the rubidium-containing part are as follows figure 2 and image 3 shown. The average rubidium content of kaolin tailings is 0.11% according to the XRF test of Beijing University of Chemical Technology.

[0041] The leaching of rubidium includes the following steps:

[0042] Step 1: Weigh 20 g of kaolin tailings with a particle size of about 200 mesh after grinding and drying, 3 g of sodium chloride particles, and 3 g of anhydrous calcium chloride powder. Sodium chloride and calcium chloride used in this step are analytically pure. Calcium chloride should be ground into powder before weighing.

[0043] Step 2: Mix kaolin tailings, sodium chloride, and calcium chloride prepared in step 1, stir evenly, and spread them into a high-temperature-resistant quartz boat.

[0044] Step 3: Put the quartz boat co...

Embodiment 2

[0057] This example differs from Example 1 in that step one in the rubidium element leaching process uses a flux that is a mixture of potassium chloride and calcium chloride (the mass ratio of kaolin tailings to potassium chloride and calcium chloride is 1: 0.15:0.15), the leaching rate of rubidium can reach 70% through testing and analysis, and most of the rubidium has been leached.

experiment example 3

[0059] The difference between this example and Example 1 is that the flux used is pure calcium chloride (the mass ratio of kaolin tailings and calcium chloride is 1:0.3), and the test analysis shows that the leaching rate is close to 10% compared with no flux The leaching rate of rubidium was significantly improved.

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Abstract

The invention discloses a method for obtaining rubidium salt with kaolin tailings as raw materials and belongs to the field of mineral purification. A fluxing agent and the kaolin tailings are roasted, the crystal form of the kaolin tailings is changed, a rubidium leachate is prepared, and then crude salt is prepared through extraction, washing and reextraction. With the adoption of the method, the process is environmentally friendly, and a very good effect is obtained.

Description

technical field [0001] The invention belongs to the field of mineral purification, and in particular relates to a method for obtaining rubidium salt by using kaolin tailings as raw materials. technical background [0002] Rubidium occupies an important position in the national economy. With the rapid development of high-tech industries at home and abroad, some unique characteristics of rubidium and its compounds have shown great application prospects and important scientific and commercial values, especially in aerospace, aerospace, The demand for applications in fields such as energy and national defense industries is constantly increasing, showing strong vitality, and becoming an important element in the development of high-tech, which in turn increases the market demand for rubidium. For example, rubidium is considered an important propellant in ion propulsion engines in the aerospace industry. According to relevant information, if the spacecraft is powered by ion propul...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22B26/10C22B1/02C22B3/04C22B3/44C01D17/00
CPCC01D17/00C22B1/02C22B3/04C22B3/44C22B26/10Y02P10/20
Inventor 宋玉军张伟伟刘志恒
Owner HANGZHOUREADY BIOLOGICAL TECH CO LTD