Gibbsite and preparation method thereof

• Main Authors: GONG YANBING, LI YUNGAI, HU JIAN, WANG NA, WANG LIJUAN, HONG JINGNAN, YANG HUIBIN, XU XUEBIN
• Format: Patent
• Language: Chinese; English
• Published: 26.10.2016
• Subjects: CHEMISTRY; COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM,CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THERARE-EARTH METALS; HUMAN NECESSITIES; HYGIENE; INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OFSOLID INORGANIC COMPOUNDS; INORGANIC CHEMISTRY; MEDICAL OR VETERINARY SCIENCE; METALLURGY; PREPARATIONS FOR MEDICAL, DENTAL, OR TOILET PURPOSES; SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS ORMEDICINAL PREPARATIONS

The invention provides a gibbsite and a preparation method thereof. The preparation method of the gibbsite comprises the following sequential steps: 1) putting a sodium aluminate solution into a decomposing device, and preserving heat at 50-100 DEG C; 2) introducing CO2 gas into the heat-preserved sodium aluminate solution while stirring, and controlling the gas inflating speed at 30-60L/L*H; 3) when the decomposing rate of the sodium aluminate solution is 10-40%, stopping gas introduction, and continuing stirring; and 4) stopping stirring, performing solid-liquid separation on the solution in the decomposing device, and washing and drying a solid obtained after the solid-liquid separation to obtain the gibbsite. The gibbsite prepared by the preparation method provided by the invention is high in sodium content, and is applicable to certain special purposes. 本发明提供种三水铝石及其制备方法。本发明的三水铝石的制备方法，包括如下顺序进行的步骤：1)将铝酸钠溶液置于分解装置中，于50-100℃进行保温；2)在搅拌条件下，向保温的铝酸钠溶液中通入CO气体，并控制通气速度为30-60L/L·H；3)待所述铝酸钠溶液的分解率为10-40％时，停止通气，并继续搅拌；4)