METHOD OF ZIRCON PREPARING Russian patent published in 1995 - IPC

FIELD: building materials. SUBSTANCE: method involves mixing of zirconium- and silicon-containing compounds following by caking. Wet precipitate of oxo- and hydrooxofluoride of zirconium is used as zirconium-containing compound, and waste production formed in the process of zircon concentrate opening with potassium silicofluoride in the form of pulp at ratio solid: liquid = 1:(0.2-0.8), or river sand of fraction less 0.315 mm were used as silicon-containing compound. Zirconium-containing compound is stirred with silicon-containing one at mass ratio (as silicon oxide) = 1:(0.2-1.5). EFFECT: improved method of product preparing. 2 cl