Method For Manufacturing Rod Shaped Ferrite Particles

The present invention relates to a bar-shaped ferrite magnetic particle manufacturing method and, more specifically, to a bar-shaped ferrite magnetic particle manufacturing method capable of composing bar-shaped ferrite magnetic particles, which can be applied to an electronic component such as an i...

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Bibliographic Details
Main Authors HWANG JIN AH, CHUN MYOUNG PYO
Format Patent
LanguageEnglish
Korean
Published 14.06.2019
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Summary:The present invention relates to a bar-shaped ferrite magnetic particle manufacturing method and, more specifically, to a bar-shaped ferrite magnetic particle manufacturing method capable of composing bar-shaped ferrite magnetic particles, which can be applied to an electronic component such as an inductor, a transformer and the like and a catalyst for environmental purification, by using a topotactic reaction of goethite (a-FeOOH). According to the present invention, the method includes: a material mixing step of mixing goethite (a-FeOOH) and a metal supply source in distilled water; a pH control step of controlling the pH of the mixture solution within a range from 7.5 to 10.5; a coprecipitation reaction step of heating the reaction solution with the controlled pH at a coprecipitation reaction temperature from 50 to 100°C; a washing and centrifugation step of washing the reaction solution with the completed coprecipitation reaction in an organic solvent, and then, centrifuging the solution; and a drying and calcination step of thermally treating precipitates, which are obtained through the washing and centrifugation steps, in an atmosphere condition of 600-800°C by drying and grinding the precipitates. 본 발명은 막대형 페라이트 자성입자 제조방법에 관한 것으로, 더욱 상세하게는 인덕터, 트랜스포머 등과 같은 전자부품 및 환경정화용 촉매 등에 적용할 수 있는 막대형 페라이트 자성입자를 goethite (a-FeOOH)의 topotactic 반응을 이용하여 합성하는 막대형 페라이트 자성입자 제조방법에 관한 것이다. 이러한 본 발명은, goethite(a-FeOOH)와, 금속 공급원을 증류수에 넣어 혼합하는 원료 혼합 단계와; 상기 혼합 용액의 pH를 7.5 ~ 10.5의 범위로 조절하는 pH 조절 단계와; 상기 pH가 조절된 반응용액을 50~100℃의 공침반응 온도로 가열하는 공침반응 단계와; 상기 공침반응이 끝난 반응용액을 유기 용매에 옮겨 담아 세척하고, 원심분리하는 세척 및 원심분리 단계 및; 상기 세척 및 원심분리를 통해 얻어진 침전물을 건조한 후 갈아, 600~800℃의 대기분위기에서 열처리하는 건조 및 하소 단계를 포함하는 것을 특징으로 한다.
Bibliography:Application Number: KR20170178118