Recovery of metallic oxides such as zirconia
First Claim
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1. A PROCESS FOR RECOVERING ZIRCONIUM IN THE FORM OF ZIRCONIUM OXIDE FROM A SUBSTANCE CONTAINING A SILICIOUS COMPOUND OF THE METAL WHICH COMPRISES FORMING A HETEROGENEOUS SYSTEM OF DISCRETE CRYSTALS OF ZIRCONIUM OXIDE AND A CRYSTALLINE SILICATE GANGUE SUBSTANTIALLY FREE OF SUCH OXIDE BY HEATING AND REACTING SAID MATERIAL AT A TEMPERATURE BELOW ABOUT 3200* F. WITH AN ADDED BASIC MATERIAL IN SUCH AN AMOUNT THAT THE BASIC FUNCTIONING OXIDES AND ACID FUNCTIONING OXIDES ARE PRESENT IN RATIOS OF BETWEEN 1:
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1 AND WHICH BASIC MATERIASL IS OF SUCH TYPE THAT UPON REACTION WITH SILICA IN THE STATED PROPORTIONS WILL PRODUCE PREPONDERANTLY SOLUBLE ORTHO-SILLICATES THUS SETTING FREE THE ZIRCONIUM OXIDE AS SUCH IN CRYSTAL GRAINS AND FORMING A FRIABLE SILICATE GANGUE, AND AFTER DISINTEGRATING THE MASS, SEPARATING THE ORTHO-SILICATE THUS FORMED FROM THE ZIRCONIUM OXIDE GRAINS.
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1 Claim
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1. A PROCESS FOR RECOVERING ZIRCONIUM IN THE FORM OF ZIRCONIUM OXIDE FROM A SUBSTANCE CONTAINING A SILICIOUS COMPOUND OF THE METAL WHICH COMPRISES FORMING A HETEROGENEOUS SYSTEM OF DISCRETE CRYSTALS OF ZIRCONIUM OXIDE AND A CRYSTALLINE SILICATE GANGUE SUBSTANTIALLY FREE OF SUCH OXIDE BY HEATING AND REACTING SAID MATERIAL AT A TEMPERATURE BELOW ABOUT 3200* F. WITH AN ADDED BASIC MATERIAL IN SUCH AN AMOUNT THAT THE BASIC FUNCTIONING OXIDES AND ACID FUNCTIONING OXIDES ARE PRESENT IN RATIOS OF BETWEEN 1:
- 1 AND 2;
1 AND WHICH BASIC MATERIASL IS OF SUCH TYPE THAT UPON REACTION WITH SILICA IN THE STATED PROPORTIONS WILL PRODUCE PREPONDERANTLY SOLUBLE ORTHO-SILLICATES THUS SETTING FREE THE ZIRCONIUM OXIDE AS SUCH IN CRYSTAL GRAINS AND FORMING A FRIABLE SILICATE GANGUE, AND AFTER DISINTEGRATING THE MASS, SEPARATING THE ORTHO-SILICATE THUS FORMED FROM THE ZIRCONIUM OXIDE GRAINS.
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Current AssigneeRobert A. Schoenlaub
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Original AssigneeRobert A. Schoenlaub
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InventorsSchoenlaub, Robert A.
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Application NumberUS02/657,057Time in Patent Office2,094 DaysField of SearchUS Class Current423/82CPC Class CodesC01G 25/02 Oxides
