Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Preparation method of magnesium-rare earth alloy electrolysis raw material

A technology for magnesium rare earth alloy and raw material, which is applied in the field of preparing magnesium rare earth alloy electrolytic raw material, and achieves the effects of reducing environmental pollution, low dehydration temperature and good dehydration effect.

Active Publication Date: 2018-01-19
QINGHAI INST OF SALT LAKES OF CHINESE ACAD OF SCI
View PDF3 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0015] In order to solve the problems existing in the above-mentioned prior art, the present invention provides a kind of preparation method of magnesium rare earth alloy electrolytic raw material, and this preparation method process is simple and easy, and dehydration efficiency is high, and preparation temperature is low, alleviates the problem of equipment corrosion, and environment The pollution is small, and the purity of the prepared magnesium rare earth alloy electrolytic raw material is high, which provides a cheap source of electrolytic raw material for the preparation of magnesium rare earth alloy by electrolysis

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Preparation method of magnesium-rare earth alloy electrolysis raw material
  • Preparation method of magnesium-rare earth alloy electrolysis raw material

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0043] The following combination figure 2 The preparation method of the magnesium rare earth alloy electrolytic raw material of the present invention is described in detail, according to the preparation method of the magnesium rare earth alloy electrolytic raw material of the present invention comprises the following steps:

[0044] Step S1, mixing bischofite and the first hydrated rare earth chloride to obtain dehydrated raw materials.

[0045] Specifically, the first hydrated rare earth chloride can be selected from at least one of lanthanum chloride hydrate, praseodymium chloride hydrate, cerium chloride hydrate, and neodymium chloride hydrate; more specifically, lanthanum chloride hydrate can be selected from At least one of lanthanum chloride heptahydrate, lanthanum chloride trihydrate, and lanthanum chloride monohydrate, praseodymium chloride hydrate can be selected from at least one of praseodymium chloride heptahydrate, praseodymium chloride trihydrate, and praseodymi...

Embodiment 1

[0079] In Example 1, the dehydration raw material is a mixture of bischofite and lanthanum chloride heptahydrate with a mass ratio of 1:1, and the feed rate is controlled to be 100kg / h, one-stage fluidized dehydration, two-stage fluidized dehydration and three The temperature of the first-stage fluidized dehydration is 170°C, 240°C and 270°C respectively. At the same time, the time of the first-stage fluidized dehydration, the second-stage fluidized dehydration and the third-stage fluidized dehydration are all 20 minutes, and finally the magnesium rare earth alloy electrolysis raw material product is obtained .

[0080] The magnesium-rare-earth alloy electrolytic raw material product obtained in this embodiment was analyzed, wherein the water-insoluble content was 9.0% (wt%); the moisture content was 11.1% (wt%) detected by the Karl Fischer moisture analyzer; meanwhile, the XRD analysis shows that the main components of the product are anhydrous magnesium chloride and anhydrou...

Embodiment 2

[0082] In Example 2, the raw material for dehydration is a mixture of bischofite and neodymium chloride hexahydrate with a mass ratio of 2:1, and the feed rate is controlled to be 100kg / h. One-stage fluidized dehydration, two-stage fluidized dehydration and three-stage dehydration The temperatures of fluidized dehydration were 170°C, 245°C and 265°C respectively. At the same time, the time of one-stage fluidized dehydration, two-stage fluidized dehydration and three-stage fluidized dehydration were all 20 minutes, and the raw material products of magnesium rare earth alloy electrolysis were finally obtained.

[0083] The magnesium-rare-earth alloy electrolytic raw material product obtained in this embodiment was analyzed, wherein the water-insoluble content was 8.0% (wt%); the wherein moisture content was 7.0% (wt%) detected by the Karl Fischer moisture analyzer; XRD analysis shows that the main components of the product are anhydrous magnesium chloride and anhydrous neodymium ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a preparation method of magnesium-rare earth alloy electrolysis raw material. The preparation method comprises the following steps: S1, bischofite and first hydrated rare-earthchloride are mixed, and then dehydrated raw material is obtained; S2, first-stage fluidization dehydration is carried out on the dehydrated raw material at the temperature of 170-180 DEG C, and thena first-stage dehydrated crude product is obtained; S3, second-stage fluidization dehydration is carried out on the first-stage dehydrated crude product at the temperature of 230-250 DEG C, and then asecond-stage dehydrated crude product is obtained; and S4, third-stage fluidization dehydration is carried out on the second-stage dehydrated crude product at the temperature of 260-280 DEG C and inthe hydrogen chloride gas atmosphere, so that the magnesium-rare earth alloy electrolysis raw material is obtained. According to the preparation method of the magnesium-rare earth alloy electrolysis raw material, staged fluidization dehydration on the bischofite and the hydrated rare-earth chloride is carried out, the hydrogen chloride protective gas atmosphere is provided, so that a hydrolysis effect is effectively inhibited in the process that an intermediate product is dehydrated to form the magnesium-rare earth alloy electrolysis raw material, and product purity is greatly improved; and the preparation method is low in dehydration temperature, low in preparation cost and good in dehydration effect.

Description

technical field [0001] The invention belongs to the technical field of rare earth material preparation, and specifically relates to a method for preparing magnesium rare earth alloy electrolytic raw materials by using bischofite and hydrated rare earth chloride as raw materials. Background technique [0002] Magnesium and magnesium alloys have many excellent processing and use properties, and the production technology and application research have attracted more and more attention. It is widely used in aerospace, automobile, electronics, communication instruments and other fields, and is known as "green engineering metal structure material in the 21st century". At present, the electrolysis of anhydrous magnesium chloride to prepare metal magnesium is the best process route for the development of metal magnesium industry. [0003] At present, there are mainly the following methods for producing anhydrous magnesium chloride for electrolysis: [0004] (1) Hydrogen chloride ga...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): C25C3/36C22B26/22C22B59/00
Inventor 韩继龙孙庆国都永生戈桦
Owner QINGHAI INST OF SALT LAKES OF CHINESE ACAD OF SCI
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com