CaTiZr (calcium, titanium and zirconium)-phase glass ceramic waste forms and preparation method thereof
A glass ceramic and perovskite zirconium technology is applied in the field of solidified material preparation, which can solve the problems of unfavorable industrialization and high melting temperature, and achieve the effects of good effect, low melting temperature and good application prospect.
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Embodiment 1
[0020] According to the mass percentage, the analytically pure SiO after drying is used 2 50%, Al 2 o 3 10%, B 2 o 3 8%, CaO 15%, TiO 2 10%, ZrO 2 7% powder, and then mixed with CeO 2 3% is used as a simulated nuclide, and the raw materials are accurately weighed according to the proportion. After the raw materials are ground and mixed evenly by a ball mill, they are poured into a crucible, and then put into a liftable electric furnace, and the temperature is raised to 1450°C at a rate of 10°C / min. In the mold, it is annealed at 700°C for 1 hour to eliminate the internal stress of the glass, crystallized at 820°C for 2 hours, crystallized at 1000°C for 2 hours, annealed at 700°C for 1 hour, and finally cooled to room temperature at an average rate of 2°C / min. The obtained perovskite-zirconium phase glass ceramic solidified body was analyzed according to the PCT method in the ASTM standard for anti-leaching performance, and the measured standardized leaching rate o...
Embodiment 2
[0022] According to the mass percentage, the analytically pure SiO after drying is used 2 47%, Al 2 o 3 15%, B 2 o 3 11%, CaO 12%, TiO 2 8%, ZrO 2 7% powder, and then mixed with CeO2 3% is used as a simulated nuclide, and the raw materials are accurately weighed according to the proportion. After the raw materials are ground and mixed evenly by a ball mill, they are poured into a crucible, and then put into a liftable electric furnace, and the temperature is raised to 1450°C at a rate of 10°C / min. In the mold, it is annealed at 700°C for 2 hours to eliminate the internal stress of the glass, crystallized at 820°C for 2 hours, crystallized at 1100°C for 2 hours, annealed at 700°C for 2 hours, and finally cooled to room temperature at an average rate of 2°C / min. The obtained perovskite-zirconium phase glass ceramic solidified body was analyzed according to the PCT method in the ASTM standard for anti-leaching performance, and the measured standardized leaching rate o...
Embodiment 3
[0024] According to the mass percentage, the analytically pure SiO after drying is used 2 50%, Al 2 o 3 12%, B 2 o 3 8%, CaO 12%, TiO 2 8%, ZrO 2 10% powder, and then mixed with CeO 2 3% is used as a simulated nuclide, and the raw materials are accurately weighed according to the proportion. After the raw materials are ground and mixed evenly by a ball mill, they are poured into a crucible, and then put into a liftable electric furnace, and the temperature is raised to 1400°C at a rate of 10°C / min. In mold making, it is followed by annealing at 700°C for 1 hour to eliminate glass internal stress, crystallization at 800°C for 2 hours, crystallization at 1200°C for 2 hours, annealing at 700°C for 1 hour, and finally cooling to room temperature at an average rate of 2°C / min. The obtained perovskite-zirconium phase glass ceramic solidified body was analyzed according to the PCT method in the ASTM standard for anti-leaching performance, and the measured standardized le...
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