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    • 2. 发明申请
    • METHOD FOR THE RECOVERY OF METALS FROM NICKEL BEARING ORES AND CONCENTRATES
    • 从镍基轴承和浓度中回收金属的方法
    • WO2014047672A1
    • 2014-04-03
    • PCT/AU2013/001066
    • 2013-09-18
    • DIRECT NICKEL PTY LTDPOSEIDON NICKEL LIMITED
    • BROCK, GrahamRODRIGUEZ, MichaelMcCARTHY, Fiona
    • C22B3/06C22B23/00
    • C22B23/0438
    • A two stage method (10) for the recovery of nickel and other metals from nickel bearing laterite ore, sulphide ore, oxide ore or concentrate (14), and nickel sulphide ore or tailings (24) is described. The method (10) in a first stage leach (20) comprises the steps of: adding nitric acid (16) to the nickel bearing laterite ore, sulphide ore, oxide ore or concentrate (14) to form a 1st stage leach slurry (18); and, treating the slurry to allow at least partial oxidation of the ore or concentrate to form a 1st stage treated slurry (22). A second stage leach (28) in the method (10) comprises the steps of: adding nickel sulphide ore or sulphide tailings 24 to the 1st stage treated slurry (22); treating the slurry to form a 2nd stage treated slurry (26); and recovering nickel and other metals from the 2nd stage treated slurry (26).
    • 描述了从含镍红土矿石,硫化矿石,氧化物矿石或浓缩物(14)和硫化镍矿石或尾矿(24)中回收镍和其他金属的二阶段方法(10)。 在第一阶段浸出(20)中的方法(10)包括以下步骤:向含镍的红土矿石,硫化物矿石,氧化物矿石或浓缩物(14)中加入硝酸(16)以形成第一级浸出浆料(18) ); 并且处理所述浆料以允许所述矿石或浓缩物的至少部分氧化以形成第一级处理浆料(22)。 方法(10)中的第二阶段浸出(28)包括以下步骤:向第一阶段处理的浆料(22)中加入硫化镍矿石或硫化物尾矿24。 处理浆料以形成第二阶段处理的浆料(26); 并从第二阶段处理的浆料(26)中回收镍和其它金属。
    • 3. 发明申请
    • METHOD FOR PROCESSING SULFIDE MINERALS AND CONCENTRATES
    • 用于处理硫化矿物和浓度的方法
    • WO2004092425A1
    • 2004-10-28
    • PCT/RU2003/000170
    • 2003-04-16
    • SHAPOVALOV, Viatcheslav DmitrievichFOKIN, Konstantin SergeevichSHOKHIN, Aleksandr Nikolaevich
    • SHAPOVALOV, Viatcheslav DmitrievichFOKIN, Konstantin SergeevichSHOKHIN, Aleksandr Nikolaevich
    • C22B3/06
    • C01B17/96C22B3/06C22B3/065C22B3/08C22B3/44C22B11/04C22B15/0073C22B19/22C22B23/0438Y02P10/234Y02P10/236
    • The method is referred to hydrometallurgical process and serves for recovery of nonferrous, rare and precious metals from sulfide minerals and concentrates. The invention is aimed at creating conditions for the most complete extraction of metals, preventing formation of elementary sulfur. The objective is attained by means of the following: the hydrometallurgical method of sulfide minerals and concentrates processing, which involves sulfide minerals oxidation in aqueous medium using nitrogen oxides, envisages that the sulfide materials containing slurry are subjected to oxidation of the sulfide and the oxidation is realized under controlled conditions of the slurry acidity, i.e. with constant neutralization of sulfuric acid formed as a result of the sulfides oxidation, moreover, sulfuric acid is neutralized to acidity level, at which no formation of elementary sulfur occurs, while natural or artificial substances, such as CaC0 3 , MgC0 3 , Ca(OH) 2 , CaO, NaOH, CaHP0 4 etc., are used as acidity neutralizers; the choice of a specific neutralizer is dictated by the necessity of formation of slurry neutralization products with assigned physicochemical properties: filterability, slurry thickening, arsenic substance insolubility, non­toxicity and other required properties. Oxidation of sulfide minerals is realized under agitation providing sufficient mass exchange and efficient occurrence of chemical reactions. Oxidation is realized in the temperature range of 20-90°C, mainly in the range of 65-85°C. The liquid-to-solid ratio may vary from 1:1 to 5:1, depending on effectiveness of the required precipitate formation and proceeding of sulfide oxidation reactions. Nitric and nitrous acids, as well as their oxides, mainly nitrous acid, HN0 2 , and its oxide, N 2 0 3 , are used as oxidizing agents. Regeneration processes of NO to N 2 0 3 are also described.
    • 该方法称为湿法冶金工艺,用于从硫化矿物和浓缩物中回收有色金属,稀有金属和贵金属。 本发明旨在为金属的最完全提取创造条件,防止形成元素硫。 目的是通过以下方式实现:硫化物矿物和浓缩物处理的湿法冶金方法,其涉及使用氮氧化物在含水介质中的硫化物矿物氧化,设想含硫化物的浆料经历硫化物的氧化,氧化是 在浆料酸度的控制条件下实现,即由于硫化物氧化而形成的硫酸的不断中和,而且硫酸被中和到酸性水平,其中没有形成元素硫,而天然或人造物质, 例如CaCO 3,MgCO 3,Ca(OH)2,CaO,NaOH,CaHP 4等作为酸性中和剂; 特定中和剂的选择由具有指定的物理化学性质的浆料中和产物的必要性决定:过滤性,浆料增稠,砷物质不溶性,无毒性和其它所需性质。 在搅拌下实现硫化物矿物的氧化,提供充分的质量交换和有效的化学反应发生。 在20-90℃的温度范围内实现氧化,主要在65-85℃的范围内。 取决于所需的沉淀形成和硫化物氧化反应的进行的有效性,液固比可以在1:1至5:1之间变化。 硝酸和亚硝酸以及其氧化物,主要是亚硝酸,HNO 2及其氧化物N 2 O 3用作氧化剂。 还描述了NO对N 2 O 3的再生过程。
    • 7. 发明申请
    • METHOD FOR THE RECOVERY OF NICKEL FROM SULPHIDE ORES
    • 从硫酸盐还原镍的方法
    • WO2014008540A1
    • 2014-01-16
    • PCT/AU2013/000757
    • 2013-07-09
    • DIRECT NICKEL PTY LTDPOSEIDON NICKEL LIMITED
    • BROCK, GrahamRODRIGUEZ, MichaelMcCARTHY, Fiona
    • C22B3/04C22B23/00
    • C22B23/0438
    • A method (10) for the recovery of nickel and other metals from nickel bearing sulphide ores, nickel bearing sulphide concentrates, and nickel sulphide metallurgical waste (12) is described. The method (10) comprises the steps of i) adding nitric acid (14) to the sulphide ore, sulphide concentrate or sulphide metallurgical waste (12) to form a slurry (16); ii) agitating (18) the slurry at ambient temperature and atmospheric pressure to allow at least partial oxidation of the sulphide ore, sulphide concentrate or sulphide metallurgical waste to form a treated slurry (20); and iii) recovering (22) nickel from the treated slurry (20). The method may be operated successfully at ambient temperature and atmospheric pressure resulting in many cost and economic benefits over prior art methods.
    • 描述了从含镍硫化物矿石,含镍硫化物精矿和硫化镍冶金废料(12)中回收镍和其他金属的方法(10)。 方法(10)包括以下步骤:i)向硫化矿石,硫化物浓缩物或硫化物冶金废料(12)中加入硝酸(14)以形成浆料(16); ii)在环境温度和大气压下搅拌(18)浆料,以允许硫化物矿石,硫化物浓缩物或硫化物冶金废物至少部分氧化以形成经处理的浆料(20); 和iii)从处理过的浆料(20)中回收(22)镍。 该方法可以在环境温度和大气压下成功地操作,导致与现有技术方法相比的许多成本和经济益处。