Some of the information on this Web page has been provided by external sources. The Government of Canada is not responsible for the accuracy, reliability or currency of the information supplied by external sources. Users wishing to rely upon this information should consult directly with the source of the information. Content provided by external sources is not subject to official languages, privacy and accessibility requirements.
Any discrepancies in the text and image of the Claims and Abstract are due to differing posting times. Text of the Claims and Abstract are posted:
(12) Patent: | (11) CA 1176059 |
---|---|
(21) Application Number: | 1176059 |
(54) English Title: | PROCESS FOR PROTECTION OF NOZZLES AND REFRACTORY LINING OF A VESSEL FOR REFINING MOLTEN METAL |
(54) French Title: | METHODE DE PROTECTION DES BUSES ET DE LA GARNITURE REFRACTAIRE D'UNE CUVE D'AFFINAGE |
Status: | Term Expired - Post Grant |
(51) International Patent Classification (IPC): |
|
---|---|
(72) Inventors : |
|
(73) Owners : | |
(71) Applicants : | |
(74) Agent: | MACRAE & CO. |
(74) Associate agent: | |
(45) Issued: | 1984-10-16 |
(22) Filed Date: | 1981-12-04 |
Availability of licence: | N/A |
Dedicated to the Public: | N/A |
(25) Language of filing: | English |
Patent Cooperation Treaty (PCT): | No |
---|
(30) Application Priority Data: | ||||||
---|---|---|---|---|---|---|
|
ABSTRACT
A process for protecting oxygen injection nozzles and the
surrounding refractory lining of a molten metal refining vessel
having such oxygen injection nozzles beneath the bath surface.
The injection nozzle comprises at least three concentric pipes,
the central conduit thereof being connected to a source of oxygen,
the outer annular conduits thereof each being supplied with a
protective fluid, said protective fluid containing at least one
hydroxyl compound or water or a mixture thereof. The protective
hydroxyl compounds are selected from the gaseous or liquid alcohol
group and preferably from the aliphatic alcohol group. Methanol,
ethanol, propanol and butanol are preferred alcohols.
Apparatus for carrying out the process is also disclosed.
Note: Claims are shown in the official language in which they were submitted.
Note: Descriptions are shown in the official language in which they were submitted.
Sorry, the representative drawing for patent document number 1176059 was not found.
2024-08-01:As part of the Next Generation Patents (NGP) transition, the Canadian Patents Database (CPD) now contains a more detailed Event History, which replicates the Event Log of our new back-office solution.
Please note that "Inactive:" events refers to events no longer in use in our new back-office solution.
For a clearer understanding of the status of the application/patent presented on this page, the site Disclaimer , as well as the definitions for Patent , Event History , Maintenance Fee and Payment History should be consulted.
Description | Date |
---|---|
Inactive: IPC from MCD | 2006-03-11 |
Inactive: IPC from MCD | 2006-03-11 |
Inactive: IPC from MCD | 2006-03-11 |
Inactive: Expired (old Act Patent) latest possible expiry date | 2001-12-04 |
Inactive: Reversal of expired status | 2001-10-17 |
Inactive: Expired (old Act Patent) latest possible expiry date | 2001-10-16 |
Grant by Issuance | 1984-10-16 |
There is no abandonment history.
Note: Records showing the ownership history in alphabetical order.
Current Owners on Record |
---|
None |
Past Owners on Record |
---|
DALTON NOSE |
WILLIAM WELLS |