Conversion of metal carbonate to metal chloride

Patent metadata

Field	Value
Publication number	US-10099937-B2
Application number	US-201515118966-A
Country	US
Kind code	B2
Filing date	Feb 9, 2015
Priority date	Feb 13, 2014
Publication date	Oct 16, 2018
Grant date	Oct 16, 2018

Abstract

A process for preparing metal chloride Mx+Clx−, in which metal carbonate in solid form is reacted with a chlorinating agent selected from chlorine and oxalyl chloride to give metal chloride Mx+Clx−, where the metal M is selected from the group of the alkali metals, alkaline earth metals, Al and Zn, Li and Mg, or Li, and x corresponds to the valency of the metal cation, and wherein metal M is additionally added as a reactant to the metal carbonate/chlorinating agent reaction.

First claim

What is claimed is:

1. A method for producing metal chloride M x+ Cl x − , comprising:
providing a chlorinating agent,
reacting metal carbonate as a solid with the chlorinating agent to form metal chloride M x+ Cl x − , metal M selected from the group consisting of the alkali metals, alkaline earth metals, Al and Zn, Li and Mg, and Li, and
wherein x corresponds to the valence of the metal cation, and
additionally adding a second metal M2, different from metal M, selected from the group consisting of alkali metals, alkaline earth metals, Al and Zn, Li and Mg, and Li as a reactant to the reaction of metal carbonate with the chlorinating agent.

2. The method of claim 1 , wherein the second metal M2 is added as a reactant with a metal/metal carbonate weight ratio of less than 5/10 in order to generate thermal energy.

3. The method of claim 2 , wherein the second metal M2 is used together with the metal carbonate for the reaction with the chlorinating agent.

4. The method of claim 1 , wherein the chlorinating agent comprises chlorine or oxalyl chloride.

5. The method of claim 1 , wherein the metal chloride is subsequently reacted to produce metal M.

6. The method of claim 5 , wherein the metal M produced by the subsequent reaction of the metal chloride is reacted at least partly with carbon dioxide to produce metal carbonate, to form a metal circuit.

7. The method of claim 1 , wherein the reaction occurs in a grid reactor or a mechanically moved fixed-bed reactor or in a cyclone reactor.

8. The method of claim 7 , wherein the reaction occurs in a grid reactor, in which the chlorinating agent is added as a gas in cocurrent with the metal carbonate.

9. The method of claim 7 , wherein the reaction occurs in a cyclone reactor, which is heated, and in which the second metal M2 is introduced at different positions in the reaction region.

10. The method of claim 1 , wherein the metal M has a metal/metal carbonate weight ratio of less than 1/10 in order to generate thermal energy.

11. The method of claim 1 , wherein the metal M has a metal/metal carbonate weight ratio of less than 0.5/10 in order to generate thermal energy.

Assignees

• Siemens Ag

Inventors

• Eckert Helmut
• Fischer Peter Heinz
• Kellermann Renate Elena
• Scherer Viktor
• Schiemann Martin
• Schmid Guenter
• Taroata Dan

Classifications

• C01F7/56

  Chlorides (containing fluorine C01F7/52) · CPC title

• C25C1/00

  Electrolytic production, recovery or refining of metals by electrolysis of solutions (C25C5/00 takes precedence) · CPC title

• B01J8/0278

  Feeding reactive fluids (for solid material B01J8/0015) · CPC title

• C25B9/00

  Cells or assemblies of cells; Constructional parts of cells; Assemblies of constructional parts, e.g. electrode-diaphragm assemblies; Process-related cell features · CPC title

• B01J8/0015

  Feeding of the particles in the reactor; Evacuation of the particles out of the reactor · CPC title