Method for the quantitative determination of Al4C3 and apparatus for carrying out the method

Patent metadata

Field	Value
Publication number	US-12405263-B2
Application number	US-202118251539-A
Country	US
Kind code	B2
Filing date	Oct 28, 2021
Priority date	Dec 4, 2020
Publication date	Sep 2, 2025
Grant date	Sep 2, 2025

Abstract

The invention relates to a method for quantitatively determining Al 4 C 3 and a device for carrying out the method.

First claim

What is claimed is:

1. Method for the quantitative determination of Al 4 C 3 , comprising the following steps:
A. providing a gas-tight sealable autoclave;
B. providing a substance comprising Al 4 C 3 , wherein the substance comprising Al 4 C 3 is provided in the form of a refractory product;
C. providing at least one aqueous liquid that reacts with Al 4 C 3 to form at least one gas;
D. placing the substance comprising Al 4 C 3 and the at least one aqueous liquid in the autoclave;
E. sealing the autoclave in a gas-tight manner;
F. reacting the Al 4 C 3 of the substance comprising Al 4 C 3 and the at least one aqueous liquid in the autoclave to form the at least one gas, wherein the autoclave is under overpressure during the reaction of the substance comprising Al 4 C 3 with the at least one aqueous liquid in the autoclave;
G. quantitatively determining the at least one gas formed; and
H. quantitatively determining Al 4 C 3 in the substance comprising Al 4 C 3 based on the quantitative determination of the at least one gas formed.

2. The method according to claim 1 , wherein the at least one gas comprises methane.

3. The method according to claim 1 , wherein the at least one aqueous liquid comprises water.

4. The method according to claim 1 , wherein the substance comprising Al 4 C 3 and the at least one aqueous liquid are mixed together.

5. The method according to claim 1 , wherein the substance comprising Al 4 C 3 is carbon bonded.

6. The method according to claim 1 , wherein the autoclave is subjected to temperature during the reaction of the substance comprising Al 4 C 3 with the at least one aqueous liquid in the chamber autoclave.

7. The method according to claim 1 , wherein the quantitative determination of the formed at least one gas is performed only after complete reaction of the substance comprising Al 4 C 3 and the at least one aqueous liquid in the chamber autoclave to form the at least one gas.

8. The method according to claim 1 , wherein the at least one gas is quantitatively determined by means of an infrared optical gas sensor.

9. The method according to claim 1 , wherein the at least one gas is quantitatively determined by means of a pressure sensor.

Assignees

• Refractory Intellectual Property Gmbh & Co Kg

Inventors

• Heid Stefan
• Nilica Roland
• Ellersdorfer Markus
• Niedermayer Stefan

Classifications

• G01N31/00

  Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroup; Apparatus specially adapted for such methods · CPC title

• G01N33/388 Primary

  Ceramics · CPC title