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Method for preparing aluminum nitride powder by suspension reduction
The invention discloses a method for preparing aluminum nitride powder by suspension reduction, the method comprises the following steps: mixing an aluminum source and a carbon source to obtain a mixture, the carbon source being selected from glucose and/or cane sugar; then adding water and a surfactant, mixing to obtain slurry, reacting to obtain a carbon-aluminum inclusion, carrying out liquid-solid separation and drying treatment to obtain an aluminum nitride precursor, spraying the aluminum nitride precursor into a hearth of a suspension furnace through carrier gas, passing through a high-temperature reduction area of the hearth of the suspension furnace from top to bottom, carrying out reduction and nitridation reaction for less than or equal to 60 seconds, obtaining a coarse aluminum nitride material and then decarbonizing and crushing the coarse aluminum nitride material to obtain the aluminum nitride powder. The prepared aluminum nitride powder is high in purity and uniform and regular in morphology, the suspension furnace adopted by the technology is good in sealing performance, the atmosphere is easy to control, safety and reliability are achieved, and the proposed technology is short in route, high in efficiency, low in energy consumption, good in environment and large in productivity and has high economic value and application prospects.
本发明公开了一种悬浮还原制备氮化铝粉体的方法，将铝源、碳源混合获得混合料，所述碳源选自葡萄糖和/或蔗糖；再加入水、表面活性剂混合获得浆料，反应获得碳铝包裹物，液固分离、干燥处理得到氮化铝前驱体，将氮化铝前驱体通过载气喷入悬浮炉的炉膛内中，由上至下穿过悬浮炉炉膛的高温还原区，进行还原、氮化反应，所述还原、氮化反应的时间≦60s，获得粗制氮化铝物料，后经除碳、破碎即得氮化铝粉体。本发明所制备的氮化铝粉体纯度较高、形貌较为均一规整，本发明工艺所采用的悬浮炉密封性好、气氛易控制且安全可靠，所提出的工艺路线短、效率高、能耗低、环境好、产能大，具有较高的经济价值和应用前景。
Method for preparing aluminum nitride powder by suspension reduction
The invention discloses a method for preparing aluminum nitride powder by suspension reduction, the method comprises the following steps: mixing an aluminum source and a carbon source to obtain a mixture, the carbon source being selected from glucose and/or cane sugar; then adding water and a surfactant, mixing to obtain slurry, reacting to obtain a carbon-aluminum inclusion, carrying out liquid-solid separation and drying treatment to obtain an aluminum nitride precursor, spraying the aluminum nitride precursor into a hearth of a suspension furnace through carrier gas, passing through a high-temperature reduction area of the hearth of the suspension furnace from top to bottom, carrying out reduction and nitridation reaction for less than or equal to 60 seconds, obtaining a coarse aluminum nitride material and then decarbonizing and crushing the coarse aluminum nitride material to obtain the aluminum nitride powder. The prepared aluminum nitride powder is high in purity and uniform and regular in morphology, the suspension furnace adopted by the technology is good in sealing performance, the atmosphere is easy to control, safety and reliability are achieved, and the proposed technology is short in route, high in efficiency, low in energy consumption, good in environment and large in productivity and has high economic value and application prospects.
本发明公开了一种悬浮还原制备氮化铝粉体的方法，将铝源、碳源混合获得混合料，所述碳源选自葡萄糖和/或蔗糖；再加入水、表面活性剂混合获得浆料，反应获得碳铝包裹物，液固分离、干燥处理得到氮化铝前驱体，将氮化铝前驱体通过载气喷入悬浮炉的炉膛内中，由上至下穿过悬浮炉炉膛的高温还原区，进行还原、氮化反应，所述还原、氮化反应的时间≦60s，获得粗制氮化铝物料，后经除碳、破碎即得氮化铝粉体。本发明所制备的氮化铝粉体纯度较高、形貌较为均一规整，本发明工艺所采用的悬浮炉密封性好、气氛易控制且安全可靠，所提出的工艺路线短、效率高、能耗低、环境好、产能大，具有较高的经济价值和应用前景。
Method for preparing aluminum nitride powder by suspension reduction
一种悬浮还原制备氮化铝粉体的方法
LIU FUPENG (author) / CHEN FEIXIONG (author) / ZENG HONG (author) / LIAO BIN (author) / MA SHUAIBING (author) / GUO YONG (author)
2021-12-31
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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