FIELD: metallurgy. SUBSTANCE: charge is prepared in ball mill where uranium dioxide, silicon dioxide and zirconium metallic powder were mixed for 1 hr. Then charge is pressed under pressure 10 MPa as tablets and heated in helium medium up to 1900 C for a few minutes under the same pressure. Then pressure is decreased up to normal, blown with air and temperature is decreased from 1600 C to 1200 C and heating up is ceased. The yield of product (ZrU)SiO4 is 75% not less, zircon crystal size is 80 mcm. EFFECT: improved method of crystalline zircon producing.
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