A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
The invention discloses a powder production line process control method for MnZn ferrite powder particles. The method comprises the following steps: accurately determining the ratio of iron to manganese to zinc in slurry by adopting an X-fluorescence analyzer, supplementing the material according to a test result, feeding the slurry into a rotational flow chamber along a spray gun pipeline by using a pump at a relatively high pressure, and rotating the slurry in a vortex sheet at a high speed in the rotational flow chamber to form an approximate free vortex. When the slurry is closer to the center of a nozzle, the rotation degree is larger, the pressure is smaller, the slurry is broken near the center of the nozzle, a hollow column with the pressure equal to the atmospheric pressure is formed, the slurry is sprayed out in the form of a film at the center of the cross section between the inner wall of the nozzle and the air column to form an atomization angle with a certain shape, then the sprayed slurry meets hot air, most of water evaporates, and the slurry is converted into particles and freely falls, so that the particles are mainly spherical and partially apple-shaped, particle distribution, flowability, gum content, water content, loose ratio consistency before and after humidifying and formability of powder are very good, and the particles are suitable for pressing various types of blanks.
本发明公开了MnZn铁氧体粉料颗粒的制粉线工艺管控方法，采用X‑荧光分析仪准确测定料浆中的铁、锰、锌配比，再根据测试结果进行补料，料浆用泵以较高的压力沿喷枪管道进入旋流室，在旋流室内，料浆在涡旋片内高速旋转，形成近似自由涡流，越靠近喷嘴中心旋转度越大而压力越小，结果在喷嘴的中心附近料浆破裂，形成一根压力等于大气压力的空心柱，料浆在喷嘴内壁与空气柱之间的横截面中心以薄膜的形式喷出形成一定形状的雾化角，然后喷出的料浆遇到热空气，大部分水分蒸发，转变为颗粒，自由下落，使得颗粒主要呈球形、部分苹果形，粉料的颗粒分布、流动性、胶含量、含水率、调湿前后松装比一致性、成型性非常好，适合压制各种类型的毛坯。
The invention discloses a powder production line process control method for MnZn ferrite powder particles. The method comprises the following steps: accurately determining the ratio of iron to manganese to zinc in slurry by adopting an X-fluorescence analyzer, supplementing the material according to a test result, feeding the slurry into a rotational flow chamber along a spray gun pipeline by using a pump at a relatively high pressure, and rotating the slurry in a vortex sheet at a high speed in the rotational flow chamber to form an approximate free vortex. When the slurry is closer to the center of a nozzle, the rotation degree is larger, the pressure is smaller, the slurry is broken near the center of the nozzle, a hollow column with the pressure equal to the atmospheric pressure is formed, the slurry is sprayed out in the form of a film at the center of the cross section between the inner wall of the nozzle and the air column to form an atomization angle with a certain shape, then the sprayed slurry meets hot air, most of water evaporates, and the slurry is converted into particles and freely falls, so that the particles are mainly spherical and partially apple-shaped, particle distribution, flowability, gum content, water content, loose ratio consistency before and after humidifying and formability of powder are very good, and the particles are suitable for pressing various types of blanks.
本发明公开了MnZn铁氧体粉料颗粒的制粉线工艺管控方法，采用X‑荧光分析仪准确测定料浆中的铁、锰、锌配比，再根据测试结果进行补料，料浆用泵以较高的压力沿喷枪管道进入旋流室，在旋流室内，料浆在涡旋片内高速旋转，形成近似自由涡流，越靠近喷嘴中心旋转度越大而压力越小，结果在喷嘴的中心附近料浆破裂，形成一根压力等于大气压力的空心柱，料浆在喷嘴内壁与空气柱之间的横截面中心以薄膜的形式喷出形成一定形状的雾化角，然后喷出的料浆遇到热空气，大部分水分蒸发，转变为颗粒，自由下落，使得颗粒主要呈球形、部分苹果形，粉料的颗粒分布、流动性、胶含量、含水率、调湿前后松装比一致性、成型性非常好，适合压制各种类型的毛坯。
Powder production line process control method for MnZn ferrite powder particles
MnZn铁氧体粉料颗粒的制粉线工艺管控方法
GU LIFENG (author)
2021-12-31
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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