Method and device for producing composite ceramic powder from high-purity Bayer process mother liquor

• Main Authors: RAN CHUN, FANG XIANGHUA, ZHANG ZHIYONG, GUO XIAOYING, LUO DENGYIN, ZHANG WEN
• Format: Patent
• Language: Chinese; English
• Published: 23.02.2024
• 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 relates to the technical field of ceramic materials, and particularly discloses a method and a device for producing composite ceramic powder from high-purity Bayer process mother liquor, the method comprises the following steps: S1, taking a sodium carbonate-sodium aluminate mixed alkali solution in which the concentration of sodium carbonate is 100-300g/L and the concentration of sodium aluminate is 1-200g/L; s2, preparing an acid solution, namely mixing yttrium chloride with the mass ratio of 1-10%, zirconium oxychloride with the mass ratio of 5-30%, a dispersing agent with the mass ratio of 0.01-5% and water to form the acid solution; s3, neutralizing the alkali solution and the acid solution, and controlling the pH at the end point to be 8-9; carrying out solid-liquid separation after the reaction; and S4, drying, calcining and grinding the solid obtained in S3. The device for producing the composite ceramic powder from the high-purity Bayer process mother liquor is used for a method for pro