Metal oxide production apparatus and metal oxide production method

Patent metadata

Field	Value
Publication number	US-11472712-B2
Application number	US-201716313510-A
Country	US
Kind code	B2
Filing date	Jun 13, 2017
Priority date	Jun 29, 2016
Publication date	Oct 18, 2022
Grant date	Oct 18, 2022

Abstract

Provided is a metal oxide production apparatus that implements a flux evaporation method. The production apparatus includes a firing furnace configured to subject a metal compound to firing in the presence of flux, a cooling pipe connected to the firing furnace and configured to convert vaporized flux resulting from the firing into powder, and a recovery means configured to recover powdered flux converted in the cooling pipe. Furthermore, provided is a metal oxide production method comprising a step (1) of subjecting a metal compound to firing in the presence of flux and obtaining a metal oxide and vaporized flux, a step (2) of converting the vaporized flux into powder by cooling the vaporized flux, and a step (3) of recovering powdered flux resulting from the converting.

First claim

The invention claimed is:

1. A metal oxide production apparatus that implements a flux evaporation method, the production apparatus comprising:
a firing furnace configured to subject a metal compound to firing in a saggar in the presence of flux;
a cooling pipe connected to the firing furnace and configured to convert vaporized flux resulting from the firing into powder;
a recovery means configured to recover powdered flux converted in the cooling pipe; and
a suction device, the suction device being a first blowing means configured to blow gas into the cooling pipe, the suction device being configured to perform suctioning to cause gas to be blown in the cooling pipe.

2. The production apparatus according to claim 1 , wherein the recovery means comprises a dust collector.

3. The production apparatus according to claim 1 , wherein the cooling pipe includes an outside air supply port.

4. The production apparatus according to claim 1 , wherein the suction device is connected to the recovery means.

5. The production apparatus according to claim 1 , wherein the firing furnace comprises at least one second blowing means.

6. The production apparatus according to claim 2 , wherein the cooling pipe includes an outside air supply port.

7. The production apparatus according to claim 2 , wherein the firing furnace comprises at least one second blowing means.

8. The production apparatus according to claim 3 , wherein the firing furnace comprises at least one second blowing means.

9. The production apparatus according to claim 4 , wherein the firing furnace comprises at least one second blowing means.

10. The production apparatus according to claim 6 , wherein the firing furnace comprises at least one second blowing means.

Assignees

• Dainippon Ink & Chemicals

Inventors

• Kamei Kiyoo
• Yuan Jian-Jun
• Sekine Hitoshi
• Kinoshita Hiroshi

Classifications

• C01P2002/72

  by d-values or two theta-values, e.g. as X-ray diagram · CPC title

• C01G39/02

  Oxides; Hydroxides · CPC title

• C01P2004/03

  obtained by SEM · CPC title

• C01P2006/12

  Surface area · CPC title

• C01F7/02 Primary

  Aluminium oxide; Aluminium hydroxide; Aluminates · CPC title