GB544823A - Preparation of zirconium dioxide - Google Patents
Preparation of zirconium dioxideInfo
- Publication number
- GB544823A GB544823A GB16543/40A GB1654340A GB544823A GB 544823 A GB544823 A GB 544823A GB 16543/40 A GB16543/40 A GB 16543/40A GB 1654340 A GB1654340 A GB 1654340A GB 544823 A GB544823 A GB 544823A
- Authority
- GB
- United Kingdom
- Prior art keywords
- mass
- zirconium
- carbon
- air
- heating
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- MCMNRKCIXSYSNV-UHFFFAOYSA-N ZrO2 Inorganic materials O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 title abstract 4
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 title abstract 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract 4
- 238000010438 heat treatment Methods 0.000 abstract 4
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 abstract 3
- 229910052799 carbon Inorganic materials 0.000 abstract 3
- 229910052726 zirconium Inorganic materials 0.000 abstract 3
- 239000000571 coke Substances 0.000 abstract 2
- 238000010891 electric arc Methods 0.000 abstract 2
- 239000000203 mixture Substances 0.000 abstract 2
- 230000001590 oxidative effect Effects 0.000 abstract 2
- 229910052845 zircon Inorganic materials 0.000 abstract 2
- GFQYVLUOOAAOGM-UHFFFAOYSA-N zirconium(iv) silicate Chemical compound [Zr+4].[O-][Si]([O-])([O-])[O-] GFQYVLUOOAAOGM-UHFFFAOYSA-N 0.000 abstract 2
- 229910001018 Cast iron Inorganic materials 0.000 abstract 1
- 229910001069 Ti alloy Inorganic materials 0.000 abstract 1
- 238000013019 agitation Methods 0.000 abstract 1
- 238000007664 blowing Methods 0.000 abstract 1
- 239000002008 calcined petroleum coke Substances 0.000 abstract 1
- 238000001816 cooling Methods 0.000 abstract 1
- 229910002804 graphite Inorganic materials 0.000 abstract 1
- 239000010439 graphite Substances 0.000 abstract 1
- 229910021385 hard carbon Inorganic materials 0.000 abstract 1
- 239000012535 impurity Substances 0.000 abstract 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract 1
- 229910052742 iron Inorganic materials 0.000 abstract 1
- 239000000463 material Substances 0.000 abstract 1
- 230000003647 oxidation Effects 0.000 abstract 1
- 238000007254 oxidation reaction Methods 0.000 abstract 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G25/00—Compounds of zirconium
- C01G25/02—Oxides
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
544,823. Zirconium dioxide ; electric arc heating. TITANIUM ALLOY MANUFACTURING CO. Nov. 15, 1940, No. 16543. Convention date, Dec. 8, 1939. [Class 1 (iii)] [Also in Group XI] Zirconium dioxide is produced by heating in an electric arc furnace a mixture of zirconium ore, e.g. zircon, baddeleyite &c. and carbon, e.g. as coke of high purity such as calcined petroleum coke, graphite &c., e.g. 1 part of coke to 5 of zircon may be used, forcing air to the vicinity of the arc during heating, and oxidizing the mass thus formed by exposure to the atmosphere e.g. after partial cooling and removal of un-re-acted material from the exterior of the re-action mass. The electric furnace used may comprise an asbestos-paper lined sheet-iron shell 11 on a cast iron bottom 13 on which is rammed a mixture of carbon and tar 14 to act as a hearth and to support and supply current to a hard carbon block 16 adjacent to which is a central electrode 20 vertically movable and with a central airpassage 21 along which a controlled quantity of air is forced via a hose 23. The block 16 may be substituted by zirconium cyanonitride or carbide, or the arc may extend directly from the hearth 14 to the electrode 20. After preliminary heating e.g. for 20 minutes zirconium ore and carbon are shovelled in in batches every 10 minutes until the furnace is full. The current is adjusted e.g. to 15,000 amps at 50 volts and after 32 to 36 hours air and current are shut off, the mass allowed to cool for 12 to 24 hours whereupon the shell 11 is removed the mass is cleaned as by a compressed air blast over its entire surface and transferred to an oxidizing grate. oxidation being facilitated as by blowing air thereto and agitation, the mass thereupon crumbling and falling through the grate, the product thus obtained may then be sieved to remove impurities which remain as lumps.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US544823XA | 1939-12-08 | 1939-12-08 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB544823A true GB544823A (en) | 1942-04-29 |
Family
ID=21991387
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB16543/40A Expired GB544823A (en) | 1939-12-08 | 1940-11-15 | Preparation of zirconium dioxide |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB544823A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1170305B (en) * | 1958-07-08 | 1964-05-14 | Electro Refractaire | Process for the manufacture of a refractory, fused, molded, practically no thermal expansion anomaly, zirconia product |
| US4746497A (en) * | 1985-02-01 | 1988-05-24 | Commonwealth Scientific And Industrial Research Organization | Process for the production of high purity zirconia |
-
1940
- 1940-11-15 GB GB16543/40A patent/GB544823A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1170305B (en) * | 1958-07-08 | 1964-05-14 | Electro Refractaire | Process for the manufacture of a refractory, fused, molded, practically no thermal expansion anomaly, zirconia product |
| US4746497A (en) * | 1985-02-01 | 1988-05-24 | Commonwealth Scientific And Industrial Research Organization | Process for the production of high purity zirconia |
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