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Low-water-content aluminum oxide for lithium battery ceramic diaphragm and preparation method thereof
The invention discloses low-water-content aluminum oxide for a lithium battery ceramic diaphragm and a preparation method thereof, and belongs to the technical field of alumina preparation. The preparation method of low-water-content aluminum oxide for a lithium battery ceramic diaphragm comprises the following steps of: (1) mixing alumina raw materials with water, adding the mixture into a grinding machine, adding a dispersing agent and aluminum oxide grinding balls with the diameter of 0.8-1mm into the grinding machine, and grinding until the particle size D10 of aluminum oxide powder is greater than or equal to 0.3 microns, D50 is greater than or equal to 0.8 micron and less than or equal to 1.2 microns, D90 is less than or equal to 3.0 microns and D99 is less than or equal to 8.0 microns; (2) dehydrating the obtained aluminum oxide slurry to obtain solid aluminum oxide, and then drying; (3) calcining the dried aluminum oxide for 120 to 150 minutes under the condition that the temperature is 1,400 to 1,500 DEG C; and (4) crushing the calcined aluminum oxide, crushing agglomerated particles, sieving with a 200-400-mesh sieve, and passing through an iron removal device to obtain aluminum oxide powder.
本发明公开了锂电池陶瓷隔膜用低含水率氧化铝及其制备方法，属于氧化铝制备技术领域，锂电池陶瓷隔膜用低含水率氧化铝的制备方法，包括如下步骤：(1)将氧化铝原料与水混合打浆，加入研磨机中，往研磨机中加入分散剂和直径为0.8‑1mm氧化铝磨球进行研磨，研磨至氧化铝粉体的粒径D10≥0.3μm，0.8μm≤D50≤1.2μm，D90≤3.0μm，D99≤8.0μm；(2)将得到的氧化铝浆料脱水得到固体氧化铝，然后进行干燥；(3)将干燥后的氧化铝置于温度为1400‑1500℃条件下煅烧120‑150min；(4)煅烧后的氧化铝进行粉碎，经破碎团聚颗粒，过200‑400目筛网后无筛上物，通过除铁装置，得到氧化铝粉末。
Low-water-content aluminum oxide for lithium battery ceramic diaphragm and preparation method thereof
The invention discloses low-water-content aluminum oxide for a lithium battery ceramic diaphragm and a preparation method thereof, and belongs to the technical field of alumina preparation. The preparation method of low-water-content aluminum oxide for a lithium battery ceramic diaphragm comprises the following steps of: (1) mixing alumina raw materials with water, adding the mixture into a grinding machine, adding a dispersing agent and aluminum oxide grinding balls with the diameter of 0.8-1mm into the grinding machine, and grinding until the particle size D10 of aluminum oxide powder is greater than or equal to 0.3 microns, D50 is greater than or equal to 0.8 micron and less than or equal to 1.2 microns, D90 is less than or equal to 3.0 microns and D99 is less than or equal to 8.0 microns; (2) dehydrating the obtained aluminum oxide slurry to obtain solid aluminum oxide, and then drying; (3) calcining the dried aluminum oxide for 120 to 150 minutes under the condition that the temperature is 1,400 to 1,500 DEG C; and (4) crushing the calcined aluminum oxide, crushing agglomerated particles, sieving with a 200-400-mesh sieve, and passing through an iron removal device to obtain aluminum oxide powder.
本发明公开了锂电池陶瓷隔膜用低含水率氧化铝及其制备方法，属于氧化铝制备技术领域，锂电池陶瓷隔膜用低含水率氧化铝的制备方法，包括如下步骤：(1)将氧化铝原料与水混合打浆，加入研磨机中，往研磨机中加入分散剂和直径为0.8‑1mm氧化铝磨球进行研磨，研磨至氧化铝粉体的粒径D10≥0.3μm，0.8μm≤D50≤1.2μm，D90≤3.0μm，D99≤8.0μm；(2)将得到的氧化铝浆料脱水得到固体氧化铝，然后进行干燥；(3)将干燥后的氧化铝置于温度为1400‑1500℃条件下煅烧120‑150min；(4)煅烧后的氧化铝进行粉碎，经破碎团聚颗粒，过200‑400目筛网后无筛上物，通过除铁装置，得到氧化铝粉末。
Low-water-content aluminum oxide for lithium battery ceramic diaphragm and preparation method thereof
锂电池陶瓷隔膜用低含水率氧化铝及其制备方法
TIAN ZHIGANG (Autor:in) / CHEN XI (Autor:in) / LI RAN (Autor:in) / ZHOU YINGTING (Autor:in) / YANG XIAOQIONG (Autor:in) / YAN LING (Autor:in)
27.11.2020
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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