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    • 105. 发明公开
    • 금속용매제를 이용한 폐무연솔더볼로부터의 은 및 주석 회수방법
    • 一种使用金属溶剂从无铅焊枪回收锡和银的方法
    • KR1020110027304A
    • 2011-03-16
    • KR1020090085329
    • 2009-09-10
    • 한국지질자원연구원
    • 김병수이재천
    • C22B11/00C22B25/00C22B7/00
    • Y02P10/212C22B25/02C22B11/023C22B25/06Y02P10/228
    • PURPOSE: A method of recovering tin and silver from lead-free solder balls using a metal solvent is provided to enable silver and tin to be recovered at a high yield rate of 95% or higher. CONSTITUTION: A method of recovering tin and silver from lead-free solder balls using a metal solvent is as follows. Non-metal impurities having a high melting point and an organic volatile material are removed by the melting of the lead-free solder ball. The metal solvent is added to the lead-free solder balls, is melted, and is made into alloys. A firstly melted alloy material is cooled, stirred, and divided into silver-enriched alloy of a coagulated dross type and tin-silver-metal solvent alloy of a melted-metal type. The metal solvent is added to the tin-silver-metal solvent alloy of a melted-metal type is melted and made into alloys. A secondly melted alloy material is cooled, stirred, and divided into a silver-enriched alloy of a coagulated-dross type and tin-metal solvent alloy of a melted-metal type.
    • 目的:提供一种使用金属溶剂从无铅焊球回收锡和银的方法,以使银和锡以高收率95%以上回收。 构成:使用金属溶剂从无铅焊球回收锡和银的方法如下。 通过熔化无铅焊球,除去具有高熔点的非金属杂质和有机挥发性物质。 将金属溶剂加入到无铅焊球中,熔化,制成合金。 首先将熔融的合金材料冷却,搅拌并分成富集熔渣的银富集合金和熔融金属型锡 - 银金属溶剂合金。 将金属溶剂加入熔融金属型的锡 - 银 - 金属溶剂合金中熔化并制成合金。 将第二熔融的合金材料冷却,搅拌并分成熔融金属型的凝结浮渣型和锡金属溶剂合金的富银合金。
    • 110. 发明授权
    • 백금 스크랩으로부터 고순도 백금의 정제방법
    • 来自铂片的高纯度铂的精制方法
    • KR100758877B1
    • 2007-09-14
    • KR1020060037703
    • 2006-04-26
    • 한국지질자원연구원
    • 김치권김수경손정수이재천
    • C22B11/06C22B7/00
    • Y02P10/234C22B11/06C22B7/008C22B11/042
    • A new platinum refining method which has a low energy cost, is not harmful to the human body since chlorine gas is not used, and has low facility and equipment costs due to low corrosion properties when refining scraps containing 75 to 99 wt.% of platinum that are disused after having been used in various industrial fields is provided. A refining method of high purity platinum from platinum scrap comprises the steps of: adding aqua regia into platinum scrap containing 75 to 99 wt.% of platinum in an amount of 200 ml per 10 g of the platinum scrap and heating and decomposing a mixture of the platinum scrap and aqua regia at 80 to 90 deg.C, thereby preparing a hydrogen hexachloroplatinate solution; forming an ammonium hexachloroplatinate precipitate by adding ammonium chloride to platinum ions dissolved into the solution to remove nickel, molybdenum, iron, etc. contained as impurities in the hydrogen hexachloroplatinate solution; filtering the ammonium hexachloroplatinate precipitate, cleaning the filtered ammonium hexachloroplatinate precipitate with ethyl alcohol, and dissolving the cleaned ammonium hexachloroplatinate precipitate into distilled water; and adding a hydrochloric acid solution into the dissolved solution to prepare an electrolyte, maintaining temperature of the electrolyte to 50 to 60 deg.C by using a high density graphite plate as an anode and using a platinum plate as a cathode, and flowing a DC(Direct Current) power source through the electrolyte and performing electrolysis at a current density of 2 to 3 A/dm^2, thereby electrodepositing platinum onto the cathode.
    • 由于不使用氯气,因此能量成本低的新的铂精炼方法对人体无害,当精炼含有75〜99重量%的铂的废料时,由于腐蚀性低而具有低设备成本和设备成本 在各种工业领域被使用后被废弃。 来自铂废料的高纯度铂的精炼方法包括以下步骤:将含有75至99重量%铂的铂废料加入到每10克铂废料中200毫升的铂中,并加热并分解 铂废料和王水在80〜90℃,由此制备六氯铂酸氢溶液; 通过向溶解在溶液中的铂离子中加入氯化铵以除去作为六氯铂酸氢盐溶液中杂质的镍,钼,铁等形成六氯铂酸铵的沉淀物; 过滤六氯铂铵铵沉淀,用乙醇清洗过滤的六氯铂酸铵沉淀,并将清洗的六氯铂酸铵沉淀溶解于蒸馏水中; 并向溶解溶液中加入盐酸溶液以制备电解质,通过使用高密度石墨板作为阳极并使用铂板作为阴极,将电解质的温度保持在50〜60℃,并使DC (直流)电源,并以2至3A / dm 2的电流密度进行电解,由此将铂电沉积到阴极上。