Method for producing beryllium solution, method for producing beryllium, method for producing beryllium hydroxide, method for producing beryllium oxide, and beryllium oxide

Patent metadata

Field	Value
Publication number	US-12467115-B2
Application number	US-202017636491-A
Country	US
Kind code	B2
Filing date	Aug 27, 2020
Priority date	Aug 30, 2019
Publication date	Nov 11, 2025
Grant date	Nov 11, 2025

Abstract

This invention has an object to provide a method for producing a beryllium solution by dissolving beryllium oxide, the method being novel and having high energy efficiency. A production method (M 10 ) for producing a beryllium solution includes a main heating step (S 13 ) of dielectrically heating an acidic solution containing beryllium oxide to generate a beryllium solution.

First claim

The invention claimed is:

1 . A method for producing a beryllium solution, comprising:
a main heating step of dielectrically heating an acidic solution containing beryllium oxide to generate a beryllium solution, wherein the method further comprises a pre-heating step of dielectrically heating a basic solution containing beryllium oxide, the pre-heating step being carried out before the main heating step.

2 . The method as set forth in claim 1 , further comprising:
a first impurity removing step of removing, with use of an organic compound that adsorbs a first element, the first element from the beryllium solution obtained through the main heating step, the first impurity removing step being carried out after the main heating step.

3 . The method as set forth in claim 2 , wherein
in the first impurity removing step, the organic compound is dissolved in an organic solvent, and the beryllium solution is acidic.

4 . The method as set forth in claim 1 , further comprising:
a second impurity removing step of adjusting a polarity of the beryllium solution from acidity to basicity so as to remove a second element from the beryllium solution, the beryllium solution having been obtained through the main heating step, the second impurity removing step being carried out after the main heating step.

5 . The method as set forth in claim 1 , wherein
the main heating step dielectrically heats the acidic solution containing beryllium oxide by applying a microwave to the acidic solution.

6 . The method as set forth in claim 1 , wherein
the beryllium solution is a beryllium chloride solution.

7 . A method for producing beryllium, comprising:
each step included in the method recited in claim 1 ; an anhydrization step of carrying out anhydrization of the beryllium solution so as to generate beryllium salt; and an electrolyzing step of carrying out molten salt electrolysis of the beryllium salt so as to generate beryllium.

8 . The method as set forth in claim 7 , wherein
the beryllium solution is a beryllium chloride solution, and the anhydrization step heats beryllium chloride hydrate contained in the beryllium chloride solution in a vacuum at a temperature of not lower than 80° C. and not higher than 110° C.

9 . A method for producing beryllium hydroxide, comprising:
each step included in the method recited in claim 1 ; and a neutralizing step of neutralizing, with a base, the beryllium solution so as to generate beryllium hydroxide.

10 . A method for producing beryllium oxide, comprising:
each step included in the method recited in claim 1 ; and a third heating step of heating the beryllium solution so as to generate beryllium oxide.

Assignees

• National Institutes For Quantum Science And Tech
• Kaken Inc

Inventors

• Nakamichi Masaru
• Kim Jaehwan
• Akatsu Yoshiaki
• Nakano Suguru
• Kawakami Tomohiko
• Yonehara Kazuo

Classifications

• C01F3/02

  Oxides; Hydroxides · CPC title

• C01F1/00

  Methods of preparing compounds of the metals beryllium, magnesium, aluminium, calcium, strontium, barium, radium, thorium, or the rare earths, in general · CPC title

• Y02P10/20

  Recycling · CPC title

• C22B3/3846

  Phosphoric acid, e.g. (O)P(OH)3 · CPC title

• C22B3/382

  Phosphine chalcogenides, e.g. compounds of the formula R3P=X with X = O, S, Se or Te · CPC title