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1.发明公开
公开(公告)号：EP1809777A1
公开(公告)日：2007-07-25
申请号：EP05797239.0
申请日：2005-10-20
IPC分类号： C22B3/10
CPC分类号： C22B19/22 , C01F5/40 , C01G9/06 , C01G21/20 , C01G49/06 , C22B3/10 , C22B3/44 , C22B19/26 , C22B23/0423 , Y02P10/234
摘要： 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 to the leach solution; recovering a metal-sulphate 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 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.
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2.发明授权LEACHING PROCESS IN THE PRESENCE OF HYDROCHLORIC ACID FOR THE RECOVERY OF A VALUE METAL FROM AN ORE 有权在盐酸存在下的浸出过程用于从矿石中回收价值金属
公开(公告)号：EP1809777B1
公开(公告)日：2009-03-11
申请号：EP05797239.0
申请日：2005-10-20
IPC分类号： C22B3/10
CPC分类号： C22B19/22 , C01F5/40 , C01G9/06 , C01G21/20 , C01G49/06 , C22B3/10 , C22B3/44 , C22B19/26 , C22B23/0423 , Y02P10/234
摘要： 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 to the leach solution; recovering a metal-sulphate 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 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.
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3.发明授权
公开(公告)号：EP1954843B1
公开(公告)日：2013-01-02
申请号：EP06848866.7
申请日：2006-11-28
CPC分类号： C22B23/0423 , C01F5/40 , C22B3/10 , C22B3/44 , C22B19/22 , C22B23/0461 , Y02P10/234
摘要： 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.
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4.发明公开
公开(公告)号：EP2462249A2
公开(公告)日：2012-06-13
申请号：EP10752196.5
申请日：2010-08-03
摘要： A process is described for leaching a value metal from an iron-containing ore, the process including the steps of leaching the ore in an acidic sulfate solution so as to form an iron-sulfate salt in a leach solution; adding sulfur dioxide to the leach solution during and/or after the leaching to regenerate acid; and recovering the iron-sulfate salt from the leach solution. The value metal is typically Zn, Cu, Ti, Al, Cr, Ni, Co, Mn, Fe, Pb, Na, K, Ca, Ag, Au or a platinum group metal. The leaching solution can also include chlorides. One or more value metals, such as nickel and/or cobalt, may be recovered with the iron sulfate salts and can subsequently be separated from the iron sulfate salts. The recovered iron sulfate salts can be decomposed to iron oxides without decomposing the sulfate salts of the other metals or whilst also decomposing the sulfate salts of the other metals, those other metals being recovered by posttreatment of the iron oxide calcine. The regenerated acid is typically recycled within the leach process.
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公开(公告)号：EP2462249B1
公开(公告)日：2020-03-18
申请号：EP10752196.5
申请日：2010-08-03
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6.发明授权
公开(公告)号：EP1809778B1
公开(公告)日：2009-07-08
申请号：EP05797276.2
申请日：2005-10-21
IPC分类号： C22B3/10
CPC分类号： C22B19/22 , C01F5/40 , C01G9/06 , C01G21/20 , C01G49/06 , C22B3/10 , C22B3/44 , C22B19/26 , C22B23/0423 , Y02P10/234
摘要： 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 to the leach solution; recovering a metal-sulphate 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 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.
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7.发明公开
公开(公告)号：EP1954843A2
公开(公告)日：2008-08-13
申请号：EP06848866.7
申请日：2006-11-28
CPC分类号： C22B23/0423 , C01F5/40 , C22B3/10 , C22B3/44 , C22B19/22 , C22B23/0461 , Y02P10/234
摘要： 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.
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8.发明公开LEACHING PROCESS IN THE PRESENCE OF HYDROCHLORIC ACID FOR THE RECOVERY OF A VALUE METAL FROM AN ORE 有权在盐酸存在下的浸出过程用于从矿石中回收价值金属
公开(公告)号：EP1809778A1
公开(公告)日：2007-07-25
申请号：EP05797276.2
申请日：2005-10-21
IPC分类号： C22B3/10
CPC分类号： C22B19/22 , C01F5/40 , C01G9/06 , C01G21/20 , C01G49/06 , C22B3/10 , C22B3/44 , C22B19/26 , C22B23/0423 , Y02P10/234
摘要： 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 to the leach solution; recovering a metal-sulphate 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 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.
摘要翻译： 描述了从含有所述有价金属的矿石中浸出有价金属的方法，所述方法包括在盐酸存在下浸出矿石以在浸取溶液中形成可溶性金属氯化物盐的步骤; 向浸取溶液中加入硫酸; 从浸取溶液中回收金属硫酸盐; 并再生盐酸。 矿石可以是氧化贱金属矿石，如氧化锌矿石; 红土镍矿，如腐泥土矿或褐铁矿矿; 硫化矿石或钛矿石。 有价值的金属通常选自Zn，Cu，Ti，Al，Cr，Ni，Co，Mn，Fe，Pb，Na，K，Ca，铂族金属和金。 金属硫酸盐中的金属可以是有价值的金属，或者可以是价值比金属价值低的金属，例如镁。 再生盐酸在浸出过程中循环使用。
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