Sintered fused alumina zirconia refractory raw material and preparation method thereof
A technology of refractory raw material, zirconium corundum, which is applied in the field of corundum refractory materials, can solve the problems of inability to give full play to the toughening effect of ZrO2, high cost of raw material preparation, uneven distribution, etc., and achieves excellent thermal shock resistance stability, low production cost, The effect of the process is simple and easy to operate
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Embodiment 1
[0024] A sintered zirconium corundum refractory raw material and a preparation method thereof. According to the mass ratio of industrial alumina powder: ball forming liquid is 1: (0.16~0.18), the alumina powder is first placed in the ball forming machine, and the ball forming liquid is sprayed to obtain a ball with a diameter of 18 ~ 25mm. The green balls are sent into the drying chamber of the high-temperature shaft kiln, dried at 450-500°C for 70-80 minutes, and then sent into the firing chamber of the high-temperature shaft kiln at 1850-1870°C Keep warm for 25-30 minutes under the same conditions, cool down with the furnace, crush, sieve, and pack to get sintered zirconium corundum refractory raw material.
[0025] The preparation method of described spherical liquid is: take 86~88wt% zirconium oxychloride, 7~9wt% calcium chloride, 1~3wt% yttrium chloride and 2~3wt% cerium chloride as raw material, press The solid-to-liquid ratio is 40~60g / L. Add water to the raw material,...
Embodiment 2
[0028] A sintered zirconium corundum refractory raw material and a preparation method thereof. According to the mass ratio of α-alumina powder: ball forming liquid is 1: (0.17~0.19), the alumina powder is first placed in the ball forming machine, and the ball forming liquid is sprayed to obtain a ball with a diameter of 19~ 26mm green balls; then send the green balls into the drying chamber of the high-temperature shaft kiln, dry at 500-550°C for 80-90 minutes, then send them into the firing chamber of the high-temperature shaft kiln, and dry them at 1870-1890°C Keep warm for 30-35 minutes at ℃, cool with the furnace, crush, sieve, and package to obtain sintered zirconium corundum refractory raw material.
[0029] The preparation method of described spherical liquid is: take 88~90wt% zirconium oxychloride, 5~7wt% calcium nitrate, 3~5wt% yttrium chloride and 1~2wt% cerium chloride as raw material, according to solid The liquid ratio is 60~80g / L. Add water to the raw material, ...
Embodiment 3
[0032] A sintered zirconium corundum refractory raw material and a preparation method thereof. According to the mass ratio of α-alumina powder: ball forming liquid is 1: (0.18~0.20), the alumina powder is first placed in the ball forming machine, and the ball forming liquid is sprayed to obtain a ball with a diameter of 20~ 27mm green balls; then send the green balls into the drying chamber of the high-temperature shaft kiln, dry at 550-600°C for 90-100 minutes, then send them into the firing chamber of the high-temperature shaft kiln, and dry them at 1880-1900°C Keep warm for 35-40 minutes at ℃, cool with the furnace, crush, sieve, and pack to get sintered zirconium corundum refractory raw material.
[0033] The preparation method of described spherical liquid is: take 90~92wt% zirconium oxychloride, 4~6wt% magnesium chloride, 4.5~6.5wt% yttrium chloride and 0.5~1.5wt% cerium chloride as raw materials, press The solid-to-liquid ratio is 80~100g / L. Add water to the raw materi...
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