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    • 1. 发明公开
    • 액상 응결법에 의한 분말 과립 제조 및 그 성형 방법
    • 通过液体浓缩法制备粉粒的方法和通过液相浓缩法处理粉粒的方法
    • KR1020030073445A
    • 2003-09-19
    • KR1020020013003
    • 2002-03-11
    • 한국과학기술연구원
    • 이해원김주선이종호송휴섭유장용이동석허장원신현익
    • B01J2/06
    • C08J3/205B01J2/06B29B9/00B29B9/08B29B9/12
    • PURPOSE: A method for preparing powder granules by liquid condensation process is provided to economically prepare uniform granules without defects, and a method for compacting powder granules by liquid condensation process is provided to freely change compaction density of granules and improve compactibility of powder granules. CONSTITUTION: The method comprises the processes of preparing slurry by mixing powder and binder with solvent(13) soluble for the binder; dropping the slurry into solvent insoluble for the binder, thereby fixing the binder so that the binder is prevented from coming out of the surface of droplets, and causing replacement between the soluble solvent and insoluble solvent inside the droplets on the surface of dropped slurry droplets, thereby condensing the droplets; and completely removing residual solvent by drying the separated droplets after separating condensed droplets from the insoluble solvent. The method for compacting powder granules by liquid condensation process comprises the processes of preparing slurry by mixing powder to be compacted and binder with solvent soluble for the binder; dropping the slurry into solvent insoluble for the binder, thereby fixing the binder so that the binder is prevented from coming out of the surface of droplets, and causing replacement between the soluble solvent and insoluble solvent inside the droplets on the surface of dropped slurry droplets, thereby condensing the droplets; completely removing residual solvent by drying the separated droplets after separating condensed droplets from the insoluble solvent; preparing green compact by pressing the dried granules in mold; and degreasing the binder by heating the green compact.
    • 目的:提供一种通过液体缩合方法制备粉末颗粒的方法,以经济地制备无缺陷的均匀颗粒,并提供通过液体冷凝方法压实粉末颗粒的方法,以自由改变颗粒的压实密度并提高粉末颗粒的紧密度。 构成:该方法包括通过将粉末和粘合剂与可溶于粘合剂的溶剂(13)混合来制备浆料的方法; 将浆料滴入不溶于粘合剂的溶剂中,由此固定粘合剂,从而防止粘合剂从液滴的表面流出,并引起可滴落的液滴表面上的液滴内的可溶性溶剂和不溶性溶剂之间的置换, 从而冷凝液滴; 并在从不溶性溶剂中分离出浓缩的液滴后,通过干燥分离的液滴来完全除去残余溶剂。 通过液体冷凝法压粉粉末颗粒的方法包括通过将要压实的粉末和粘合剂与可溶于粘合剂的溶剂混合来制备浆料的方法; 将浆料滴入不溶于粘合剂的溶剂中,由此固定粘合剂,从而防止粘合剂从液滴的表面流出,并引起可滴落的液滴表面上的液滴内的可溶性溶剂和不溶性溶剂之间的置换, 从而冷凝液滴; 在从不溶性溶剂中分离浓缩的液滴后,通过干燥分离出的液滴来完全除去残留溶剂; 通过在模具中挤压干燥的颗粒制备生坯; 并通过加热生坯来去除粘合剂。
    • 2. 发明授权
    • 액상 응결법에 의한 분말 과립 제조 및 그 성형 방법
    • 액상응결법에의한분말과립제조및그성형방법
    • KR100439738B1
    • 2004-07-12
    • KR1020020013003
    • 2002-03-11
    • 한국과학기술연구원
    • 이해원김주선이종호송휴섭유장용이동석허장원신현익
    • B01J2/06
    • C08J3/205B01J2/06B29B9/00B29B9/08B29B9/12
    • Powder granules are prepared by preparing slurry by mixing powders, binding agent, and binding agent soluble solvent; dropping slurry to binding agent insoluble solvent; coagulating droplet by solvent exchange between the soluble and insoluble solvents; and separating the coagulated droplet from the insoluble solvent. The preparation of powder granules involves preparing slurry by mixing powders, binding agent, and binding agent soluble solvent; dropping slurry to binding agent insoluble solvent to fix the binding agent so that it can not be released to a surface of the droplet of the slurry; coagulating the droplet by solvent exchange between the soluble solvent inside the droplet and the insoluble solvent at the surface of the droplet; and separating the coagulated droplet from the insoluble solvent, drying it, and removing a residual solvent. An independent claim is also included for a method for shaping powder granules by liquid condensation comprising preparing the slurry; dropping the slurry to the binding agent insoluble solvent; coagulating the droplet; separating the coagulated droplet from the insoluble solvent; pressurizing the dried granules in a metal mold to fabricate a shaped body; and removing the binding agent by heating the shaped body.
    • 通过混合粉末,粘合剂和粘合剂可溶性溶剂制备浆料来制备粉末颗粒; 将浆液滴入粘合剂不溶溶剂中; 通过可溶性和不溶性溶剂之间的溶剂交换使凝固液凝固; 并将凝结的液滴与不溶性溶剂分离。 粉末颗粒的制备包括通过混合粉末,粘合剂和粘合剂可溶性溶剂来制备浆料; 将浆料滴入粘合剂不溶溶剂中以固定粘合剂,使其不能被释放到浆料液滴的表面; 通过液滴内部的可溶性溶剂与液滴表面处的不溶性溶剂之间的溶剂交换来使液滴凝固; 并将凝结的液滴从不溶性溶剂中分离出来,将其干燥并除去残余溶剂。 还包括一种独立权利要求,用于通过液体冷凝使粉末颗粒成形的方法,包括制备浆料; 将浆料滴入粘合剂不溶溶剂中; 凝结小滴; 将凝结的液滴与不溶性溶剂分离; 在金属模具中加压干燥的颗粒以制造成型体; 并通过加热成形体来去除粘合剂。