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    • 3. 发明公开
    • 진공정련을 이용하여 저알파 방사선을 방출하는 주석 제조방법
    • 使用真空精炼来放射低阿尔法放射性放射性药物的制造方法
    • KR1020120135656A
    • 2012-12-17
    • KR1020110054490
    • 2011-06-07
    • 서울시립대학교 산학협력단덕산하이메탈(주)
    • 정재필정도현쿠마산토시추용철이현규김철희
    • C22B25/08C22B9/04
    • C22C13/00C22B7/006C22B9/04C22B25/04C22B25/08
    • PURPOSE: A method for manufacturing tin with low alpha radiation using vacuum refining is provided to reduce alpha radiation from tin by removing most of foreign materials such as lead and bismuth. CONSTITUTION: A tin manufacturing method comprises the steps of: preparing tin(S110), washing the tin with hydrochloric acid(S120), washing the tin with acetone, ethanol, or distilled water and drying the tin(S130), washing a crucible, which is installed in a vacuum furnace, with hydrochloric acid and drying the crucible(S140), accommodating the tin in the crucible and inserting the crucible in the vacuum furnace(S150), and removing foreign materials with higher vapor pressure and lower boiling point than tin in the vacuum furnace(S160). [Reference numerals] (AA) Start; (BB) End; (S110) Preparing raw material tin; (S120) Dipping and washing tin in hydrochloric acid; (S130) Washing tin with acetone, ethanol, or distilled water and drying in nitrogen or air; (S140) Washing crucible in vacuum furnace with hydrochloric acid and drying in nitrogen gas; (S150) Inserting pretreated tin in crucible and putting crucible in vacuum furnace; (S160) Injecting steam into vacuum furnace and refining to remove foreign materials from tin; (S170) Cooling vacuum furnace to cool refined tin; (S180) Washing tin to remove other pollutant particles
    • 目的:提供一种使用真空精炼制造低α辐射锡的方法,通过去除大多数异物如铅和铋来减少锡的α辐射。 构成:锡制造方法包括以下步骤:制备锡(S110),用盐酸洗涤锡(S120),用丙酮,乙醇或蒸馏水洗涤锡,并干燥锡(S130),洗涤坩埚, 将其安装在真空炉中,用盐酸干燥坩埚(S140),将锡容纳在坩埚中并将坩埚插入真空炉(S150)中,除去蒸气压低沸点的异物, 锡在真空炉中(S160)。 (附图标记)(AA)开始; (BB)结束; (S110)准备原料锡; (S120)在盐酸中浸锡洗涤锡; (S130)用丙酮,乙醇或蒸馏水洗涤锡,并在氮气或空气中干燥; (S140)用真空炉中的盐酸洗涤坩埚并在氮气中干燥; (S150)将预处理的锡插入坩埚中并将坩埚放入真空炉中; (S160)将蒸汽注入真空炉中并精炼以从锡中除去异物; (S170)冷却真空炉冷却精锡; (S180)洗涤锡以除去其他污染物颗粒