"1.rudy and concentrates zirconium: zirconium concentrate marks krc. in a sand rozhevo- cream koloru.vmist: zro2 + hfo2 - 65,9-66,3%. application: for production of refractories, glass and keramiky.tu a 14- 10-015-98vyrobnyk: branch "" vhmk "" pat "" ohhk "" "