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    • 3. 发明公开
    • 광석으로부터 유가 금속을 회수하기 위한 염산의존재하에서의 침출 방법
    • 氢氯酸盐存在下从矿石中恢复价值金属的浸出过程
    • KR1020070084417A
    • 2007-08-24
    • KR1020077011492
    • 2005-10-20
    • 앵글로 오퍼레이션스 리미티드
    • 스미트,얀,트에르드스테일,요한두토이트
    • C22B3/34C22B3/04
    • C22B19/22C01F5/40C01G9/06C01G21/20C01G49/06C22B3/10C22B3/44C22B19/26C22B23/0423Y02P10/234
    • A process is described for leaching a value metal from an ore containing said value metal, the process including the steps of leaching the ore in the presence of hydrochloric acid so as to form a soluble metal-chloride salt in a leach solution; adding sulphur dioxide to the leach solution; recovering a metal-sulphate or metal-sulphite salt from the leach solution; and regenerating hydrochloric acid. The ore may be an oxidic base metal ore, such as a zinc oxide ore; a lateritic nickel ore, such as a saprolitic or limonitic ore; a sulphide ore or a titanium ore. The value metal is typically selected from the group consisting of Zn, Cu, Ti, Al, Cr, Ni, Co, Mn, Fe, Pb, Na, K, Ca, platinum group metals and gold. The metal in the metal-sulphate or sulphite salt may be the value metal, or may be a metal of less value than the value metal, such as magnesium. The regenerated hydrochloric acid is recycled within the leach process.
    • 描述了一种用于从含有所述金属金属的矿石中浸出值金属的方法,该方法包括在盐酸存在下浸提矿石以在浸出溶液中形成可溶性金属氯化物盐的步骤; 向浸出溶液中加入二氧化硫; 从浸出溶液中回收金属硫酸盐或金属 - 亚硫酸盐; 并再生盐酸。 矿石可以是氧化贱金属矿,例如氧化锌矿石; 红土镍矿,如腐泥或褐铁矿; 硫化矿石或钛矿石。 金属金属通常选自Zn,Cu,Ti,Al,Cr,Ni,Co,Mn,Fe,Pb,Na,K,Ca,铂族金属和金。 金属硫酸盐或亚硫酸盐中的金属可以是金属值,或者可以是比金属值如金属值小的金属。 再生的盐酸在浸出过程中循环使用。
    • 5. 发明公开
    • 광석으로부터 유가 금속을 회수하기 위한 염산의존재하에서의 침출 방법
    • 氢氯酸盐存在下从矿石中恢复价值金属的浸出过程
    • KR1020080075203A
    • 2008-08-14
    • KR1020087015408
    • 2006-11-28
    • 앵글로 오퍼레이션스 리미티드
    • 스테일,요한두토이트스미트,얀,트에르드
    • C22B3/06C22B7/04
    • C22B23/0423C01F5/40C22B3/10C22B3/44C22B19/22C22B23/0461Y02P10/234
    • ABSTRACT A process is described for leaching a value metal from an ore containing said value metal, the process including the steps of leaching the ore in the presence of hydrochloric acid so as to form a soluble metal-chloride salt in a leach solution; adding sulphuric acid and/or sulphur dioxide to the leach solution; recovering a solid metal-sulphate or metal-sulphite salt from the leach solution; regenerating hydrochloric acid; and continuously transferring at least a portion of the regenerated hydrochloric acid in solution to the vapour phase. The vapourised hydrochloric acid is then captured and returned to the leaching step. The sulphuric acid and/or sulphur dioxide may be added to the leach solution during or after the leaching step. The value metal is typically selected from the group consisting of Zn, Cu, Ti, Al, Cr, Ni, Co, Mn, Fe, Pb, Na, K, Ca, platinum group metals and gold. The metal in the metal-sulphate or sulphite salt may be the value metal, or may be a metal of less value than the value metal, such as magnesium.
    • 摘要描述了一种从含有金属矿石的矿石中浸出含金属金属的方法,该方法包括以下步骤:在盐酸存在下浸出矿石,以在浸出溶液中形成可溶性金属氯化物盐; 向浸出溶液中加入硫酸和/或二氧化硫; 从浸出溶液中回收固体金属硫酸盐或金属 - 亚硫酸盐; 再生盐酸; 并将溶液中的再生盐酸的至少一部分连续地转移到气相中。 然后将蒸发的盐酸捕获并返回到浸出步骤。 在浸出步骤期间或之后,可以将硫酸和/或二氧化硫加入到浸出溶液中。 金属金属通常选自Zn,Cu,Ti,Al,Cr,Ni,Co,Mn,Fe,Pb,Na,K,Ca,铂族金属和金。 金属硫酸盐或亚硫酸盐中的金属可以是金属值,或者可以是比金属值如金属值小的金属。