Zirconium oxide opacifier and method of making same

538,223. Vitreous enamels. TITANIUM ALLOY MANUFACTURING CO. Oct. 18, 1939, No. 28162. Convention date, Nov. 1, 1938. Drawings to Specification. [Class 56] [Also in. Group III] A method of making a crystalline zirconium oxide opacifier comprises roasting a mixture of a zirconium oxide compound with a...

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1. Verfasser:	KINZIE CHARLES J
Format:	Patent
Sprache:	eng
Schlagworte:	CHEMICAL COMPOSITION OF GLASSES, GLAZES, OR VITREOUSENAMELS CHEMISTRY GLASS JOINING GLASS TO GLASS OR OTHER MATERIALS METALLURGY MINERAL OR SLAG WOOL SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS,MINERALS OR SLAGS SURFACE TREATMENT OF GLASS
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Zusammenfassung:	538,223. Vitreous enamels. TITANIUM ALLOY MANUFACTURING CO. Oct. 18, 1939, No. 28162. Convention date, Nov. 1, 1938. Drawings to Specification. [Class 56] [Also in. Group III] A method of making a crystalline zirconium oxide opacifier comprises roasting a mixture of a zirconium oxide compound with an alkalimetal re-agent, preferably sodium carbonate, washing the .roast in water, adding acid to the roast while in suspension, to dissolve alkalimetal compounds therein, neutralizing the resulting charge to produce a gelatinous precipitate on the zirconia particles, and finally washing and drying the residual product to form the opacifier. Compositions of a number of batches for frits are given in the description. Specification 535,011 and U.S.A. Specifications 1,588,476 and 2,102,627 are referred to.