Processing method of aluminum oxide

• Main Authors: KANG HYUN-YEE, SHI ZHENYU, LIN YONGKUN, WANG BINGCHUN, WANG XIANBIN, LI JIN, GUAN SHENGZE, ZHANG SHUAI, ZHANG XUWANG, PI ZHAOKUN
• Format: Patent
• Language: Chinese; English
• Published: 12.05.2023
• Subjects: ARTIFICIAL STONE; CEMENTS; CERAMICS; CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY; CHEMISTRY; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS; CONCRETE; LIME, MAGNESIA; METALLURGY; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; REFRACTORIES; SLAG; THEIR RELEVANT APPARATUS; TRANSPORTING; TREATMENT OF NATURAL STONE

The invention provides a processing method of aluminum oxide, and belongs to the technical field of aluminum oxide preparation. The preparation method comprises the following steps: firstly, preparing aluminum hydroxide, then mixing the aluminum hydroxide with ammonium salt, fumed silica, silicon powder, zirconium oxide powder and a surfactant, kneading, forming, drying and roasting to obtain the aluminum oxide. The fumed silica and the silicon powder are added into the raw materials, so that the specific surface area of the aluminum oxide can be increased, the zirconium oxide powder is added, the mechanical property and the wear resistance of the aluminum oxide are improved, the strength of the aluminum oxide is improved, the ammonium salt is added in the forming process, an aluminum oxide structure is supported, the strength of the aluminum oxide is further improved, and meanwhile, the aluminum oxide is not prone to cracking. In the drying and roasting process, ammonium salt is decomposed to generate gas, t