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Plate-shaped corundum and production method thereof
The invention particularly relates to tabular corundum and a production method thereof, and belongs to the technical field of corundum preparation.The method comprises the steps that high-quality aluminum hydroxide and low-quality aluminum hydroxide are mixed to obtain a mixture; and roasting the mixture to obtain the low-alpha light calcined alumina, crushing the low-alpha light calcined alumina to obtain a ground material; the abrasive is molded, and green pellets are obtained; the green pellets are dried, and dried green pellets are obtained; the dried green pellets are sintered, and tabular corundum is obtained; wherein the content of Na2O in the mixture is less than 0.3% by mass, the aluminum hydroxide is used as the raw material, the technical prejudice that only aluminum oxide is used as the raw material at present is solved, and meanwhile, the high-quality aluminum hydroxide and the low-quality aluminum hydroxide are mixed, so that the Na2O content of the product is within 0.4%, and the production cost of corundum can be reduced.
本发明特别涉及一种板状刚玉及其生产方法，属于刚玉制备技术领域，方法包括：将高品质氢氧化铝和低品质氢氧化铝进行混合，得到混合料；将所述混合料进行焙烧，得到低α轻烧氧化铝；将所述低α轻烧氧化铝进行粉碎，得到获得研磨料；将所述研磨料进行成型，获得生球；将所述生球进行烘干，获得烘干生球；将所述烘干生球进行烧结，获得板状刚玉；其中，以质量计，所述混合料的Na2O的含量＜0.3％，通过以氢氧化铝为原料，解决目前仅以氧化铝为原料的技术偏见，同时通过高品质氢氧化铝和低品质氢氧化铝混合，保证产品Na2O在0.4％以内，可降低刚玉生产成本。
Plate-shaped corundum and production method thereof
The invention particularly relates to tabular corundum and a production method thereof, and belongs to the technical field of corundum preparation.The method comprises the steps that high-quality aluminum hydroxide and low-quality aluminum hydroxide are mixed to obtain a mixture; and roasting the mixture to obtain the low-alpha light calcined alumina, crushing the low-alpha light calcined alumina to obtain a ground material; the abrasive is molded, and green pellets are obtained; the green pellets are dried, and dried green pellets are obtained; the dried green pellets are sintered, and tabular corundum is obtained; wherein the content of Na2O in the mixture is less than 0.3% by mass, the aluminum hydroxide is used as the raw material, the technical prejudice that only aluminum oxide is used as the raw material at present is solved, and meanwhile, the high-quality aluminum hydroxide and the low-quality aluminum hydroxide are mixed, so that the Na2O content of the product is within 0.4%, and the production cost of corundum can be reduced.
本发明特别涉及一种板状刚玉及其生产方法，属于刚玉制备技术领域，方法包括：将高品质氢氧化铝和低品质氢氧化铝进行混合，得到混合料；将所述混合料进行焙烧，得到低α轻烧氧化铝；将所述低α轻烧氧化铝进行粉碎，得到获得研磨料；将所述研磨料进行成型，获得生球；将所述生球进行烘干，获得烘干生球；将所述烘干生球进行烧结，获得板状刚玉；其中，以质量计，所述混合料的Na2O的含量＜0.3％，通过以氢氧化铝为原料，解决目前仅以氧化铝为原料的技术偏见，同时通过高品质氢氧化铝和低品质氢氧化铝混合，保证产品Na2O在0.4％以内，可降低刚玉生产成本。
Plate-shaped corundum and production method thereof
一种板状刚玉及其生产方法
ZHANG JIAN (author) / XU MIN (author) / LI BOWEN (author) / SU LIANG (author)
2022-08-19
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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