Process for the recovery and refining of rhodium
    1.
    发明授权
    Process for the recovery and refining of rhodium 失效
    回收和精炼铑的方法

    公开(公告)号:US06596245B2

    公开(公告)日:2003-07-22

    申请号:US09819319

    申请日:2001-03-28

    IPC分类号: C22B1100

    摘要: The present invention relates to a process for the recovery and refining of rhodium starting from a mixture containing rhodium and other transition metals, including those of the platinum Group, as well as metals of the main Groups, said process comprising the following passages: a) formation of an adduct between rhodium trichloride and a halide of a metal selected from metals of Groups IIA, IIIA, IVA, IVB, VB and VIB; b) carbonylation of the precipitated adduct, deriving from passage a) with the formation of rhodium halogen carbonyls and c) sublimation of the carbonylated product obtained in the previous passage. The main advantage of the above process consists in the production of an extremely pure product, with excellent yields.

    摘要翻译: 本发明涉及从含有铑和其它过渡金属(包括铂族基团)的混合物以及主要金属的混合物开始回收和精炼铑的方法,所述方法包括以下通路:a) 在三氯化铑和选自IIA,IIIA,IVA,IVB,VB和VIB族金属的金属的卤化物之间形成加合物; b)通过a)衍生的沉淀的加合物的羰基化,形成铑卤素羰基,和c)上述通道中获得的羰基化产物的升华。上述方法的主要优点在于生产极纯的产物 ,产量高。

    Hydrometallurgical treatment process for extraction of platinum group metals obviating the matte smelting process
    2.
    发明授权
    Hydrometallurgical treatment process for extraction of platinum group metals obviating the matte smelting process 有权
    用于提取铂族金属的湿法冶金处理方法,避免了无光泽的冶炼过程

    公开(公告)号:US06579504B1

    公开(公告)日:2003-06-17

    申请号:US09700595

    申请日:2001-01-12

    IPC分类号: C22B1100

    CPC分类号: C22B11/06 C22B11/04

    摘要: A hydrometallurgical treatment process for extracting platinum group metals from a flotation concentrate in which the invention revolves around obviating the matte smelting and granulating process. Instead the concentrate is submitted to pressure leaching, oxidative or reductive roasting and final recovery by means of ion exchange adsorption. Roasting is applied in order to convert the platinum group metals to a form that dissolves in chlorine/HCL and a chlorine/HCL leach that renders the platinum group metals in solution.

    摘要翻译: 一种用于从浮选精矿中提取铂族金属的湿法冶金处理方法,其中本发明围绕消除无光泽的熔炼和造粒过程。 相反,浓缩物通过离子交换吸附进行压力浸出,氧化还原焙烧和最终回收。 施加焙烧以将铂族金属转化成溶解在氯/氯化物中的形式和使溶液中的铂族金属成为氯/氯化物的浸出物。

    Process for recovering palladium from a solution
    3.
    发明授权
    Process for recovering palladium from a solution 失效
    从溶液中回收钯的方法

    公开(公告)号:US06482372B2

    公开(公告)日:2002-11-19

    申请号:US09747459

    申请日:2000-12-22

    IPC分类号: C22B1100

    摘要: A method for selectively separating and recovering palladium from an aqueous palladium/tin catalyst solution. The method includes the steps of adjusting the pH of the aqueous solution to a specified pH range thereby precipitating the tin, and producing a soluble form a palladium. The solution can be either pre-filtered or settled and subsequently processed through ion exchange resin in a conventional manner, or processed in an upflow direction through an at least partially fluidized bed of ion exchange resin to remove and concentrate the palladium for recovery.

    摘要翻译: 从钯/锡催化剂水溶液中选择性分离和回收钯的方法。 该方法包括以下步骤:将水溶液的pH调节至规定的pH范围,从而使锡沉淀,并产生可溶形式的钯。 溶液可以预先过滤或沉降,随后通过离子交换树脂以常规方式进行处理,或者通过离子交换树脂的至少部分流化床在向上流动方向处理,以除去并浓缩钯以进行回收。

    Autoclave having an agitator with an aerating impeller for high oxygen transfer rate to metal-containing slurries and method of use
    4.
    发明授权
    Autoclave having an agitator with an aerating impeller for high oxygen transfer rate to metal-containing slurries and method of use 失效
    高压灭菌器具有带有通气叶轮的搅拌器,用于高含氧量的浆料中的氧传递速率和使用方法

    公开(公告)号:US06183706B2

    公开(公告)日:2001-02-06

    申请号:US09038448

    申请日:1998-03-11

    申请人: James A. King

    发明人: James A. King

    IPC分类号: C22B1100

    摘要: A method is disclosed for recovering a metal from a metal containing material by autoclaving with an autoclave which includes an agitator that includes a first inlet for a recycled oxygen-containing gas, a second inlet for a fresh oxygen-containing gas, an impeller having a plurality of outlets to recirculate or introduce the oxygen-containing gases into the slurry and a set of mixing blades located below the outlets to radially disperse gas bubbles substantially uniformly throughout the slurry. The outlets for the gas can be located in an intermediate set of blades for thorough dispersion of the gas bubbles in the slurry.

    摘要翻译: 公开了一种用于通过高压釜高压灭菌从含金属材料中回收金属的方法,所述高压釜包括搅拌器,所述搅拌器包括用于再循环含氧气体的第一入口,新鲜含氧气体的第二入口,具有 多个出口将含氧气体再循环或引入浆料,以及位于出口下方的一组混合叶片,以基本均匀地将气泡径向分散在整个浆料中。 用于气体的出口可以位于中间的一组叶片中,用于气泡在浆料中的充分分散。

    Method for extracting osmium and ruthenium from noble metal concentrates
    5.
    发明授权
    Method for extracting osmium and ruthenium from noble metal concentrates 有权
    从贵金属浓缩物中提取锇和钌的方法

    公开(公告)号:US06475449B2

    公开(公告)日:2002-11-05

    申请号:US09754515

    申请日:2001-01-04

    IPC分类号: C22B1100

    摘要: A method for extracting osmium and ruthenium from noble metal concentrates, by: a) treatment of a noble metal concentrate containing osmium and ruthenium with nitric acid at a maximum temperature of about T=+30° C., b) heating of the resultant suspension/solution to a minimum temperature of about T=+85° C.; c) capturing the resultant osmium tetroxide in an absorption solution; d) treatment of the suspension/solution having a temperature of about T=+20° C. to 30° C. with hydroxide at a maximum reaction temperature of about T=+65° C.; and e) treatment of the alkaline suspension/solution from step d) with a substance for the oxidizing leaching of the ruthenium.

    摘要翻译: 一种从贵金属浓缩物中提取锇和钌的方法,通过以下步骤:a)在约T = + 30℃的最高温度下用硝酸处理含有锇和钌的贵金属浓缩物,b)加热所得悬浮液 /溶液至约T = + 85℃的最低温度; c)在所述吸收溶液中捕获所得的四氧化锇; d)处理温度为约T = + 20℃至30℃的悬浮液/溶液 在约T = + 65℃的最大反应温度下用氢氧化物。 使用步骤d)的碱性悬浮液/溶液处理用于钌氧化浸出的物质。

    Two-stage bioleaching of sulphidic material containing arsenic
    6.
    发明授权
    Two-stage bioleaching of sulphidic material containing arsenic 有权
    包含砷的硫化物质的两阶段生物浸出

    公开(公告)号:US06461577B1

    公开(公告)日:2002-10-08

    申请号:US09551575

    申请日:2000-04-18

    IPC分类号: C22B1100

    CPC分类号: C22B3/18 C22B11/08 Y02P10/234

    摘要: A method of leaching sulphidic material that contains metals and arsenic under oxidising conditions and with the aid of microorganisms is characterised by mixing the material with an acid aqueous solution to form a pulp, and in that the material is leached in a first leaching stage at a pH of below 2 and at a temperature that ranges from room temperature to about 55° C. in the presence of an active quantity of microorganisms of the mesophilic and/or moderately thermophilic type, wherewith the major part of the arsenic content of the material and possibly also part of its metal content is/are leached-out and the arsenic leached from said material is oxidised successively to a pentavalent state. The remaining leachable metal content of the material is leached-out in a following leaching stage in the presence of an active quantity of an extremely thermophilic micro-organism and at a temperature within the active range of said micro-organism, said temperature being higher than the temperature in the first stage. The pH is suitably raised in the second stage to a level at which the pentavalent arsenic present in solution is caused to transform to a solid state and precipitate-out as a metal-containing arsenate which is separate from the leaching solution together with unleached material in the pulp after termination of the leaching process.

    摘要翻译: 在氧化条件下并借助微生物浸出含有金属和砷的硫化物质的方法的特征在于将该材料与酸性水溶液混合以形成纸浆,并且其中该材料在第一浸出阶段浸出 pH在2以下,在温度范围为室温至55℃的温度下,在活性量的嗜温和/或中度嗜温型微生物的存在下,其中主要部分的砷含量的材料和 也可能将其金属含量的一部分浸出,并且从所述材料中浸出的砷被连续氧化成五价状态。 在活性量极度嗜热的微生物的存在下和在所述微生物的活性范围内的温度下,在随后的浸出阶段中将所述材料的剩余可浸出金属含量浸出,所述温度高于 第一阶段的温度。 将pH值适当地在第二阶段升高到使溶液中存在的五价砷转化为固体状态并作为含金属的砷酸盐沉淀出的水平,所述砷酸盐与浸出液与未浸提的材料一起分离 浸出过程终止后的纸浆。

    Recovery of precious metal and other values from spent compositions/materials
    7.
    发明授权
    Recovery of precious metal and other values from spent compositions/materials 失效
    从废弃的组合物/材料中回收贵金属和其他价值

    公开(公告)号:US06455018B1

    公开(公告)日:2002-09-24

    申请号:US08441113

    申请日:1995-05-15

    申请人: Jean-Pierre Cuif

    发明人: Jean-Pierre Cuif

    IPC分类号: C22B1100

    摘要: Precious metal values, e.g., platinum, palladium and rhodium, and, optionally, other valuable elements, e.g., one or more rare earths and cerium in particular, are recovered from a wide variety of compositions of matter and articles of manufacture, for example waste or spent catalysts such as vehicular postcombustion catalysts, by (i) optionally comminuting such composition/article into a finely divided state, (ii) intimately admixing the composition/article with sulfuric acid, (iii) calcining the resulting admixture at a temperature ranging from 150° to 450° C., and (iv) leaching the calcined admixture in an aqueous medium, whether simultaneously or separately, with H+ ions and chloride ions, whereby obtaining (1) a solid residue substantially depleted of such precious metal values and, optionally, of such other elements, and (2) at least one liquid solution comprising such precious metal values and, optionally, such other elements.

    摘要翻译: 贵金属值,例如铂,钯和铑,以及任选的其它有价值的元素,例如一种或多种稀土和铈,特别是从各种各样的物质和制品组成中回收,例如废物 或废催化剂,例如车辆后燃烧催化剂,通过(i)任选地将该组合物/制品粉碎成细碎状态,(ii)将组合物/制品与硫酸充分混合,(iii)在所述混合物的温度范围内煅烧所得混合物, 150℃至450℃,以及(iv)将所煅烧的混合物在水性介质中,与H +离子和氯离子同时或分开地浸出,从而获得(1)基本上不含这种贵金属值的固体残余物, 任选的这些其他元素,和(2)至少一种包含这种贵金属值的液体溶液和任选的这种其它元素。

    Process for increasing recovery of precious metals in an ore processing operation
    8.
    发明授权
    Process for increasing recovery of precious metals in an ore processing operation 失效
    在矿石加工作业中提高贵金属回收率的方法

    公开(公告)号:US06342190B1

    公开(公告)日:2002-01-29

    申请号:US09578976

    申请日:2000-05-25

    IPC分类号: C22B1100

    CPC分类号: C22B1/00 C22B1/04 C22B11/02

    摘要: An ore separation process is provided which begins with a specially designed primary grinding mill. The primary grinding mill grinds the ore into a fine powder which is then blown into the primary sizing baghouse which separates the smaller particles from the larger particles. The oversized particles are channeled to the secondary grinding mill where they are ground again and blown to the secondary sizing baghouse. The grinding process is repeated until all the ore is the proper size. Once the ore has been ground to the proper size it is sent to the ore-roasting oven where it is mixed with a precise amount of air where it is flash heated which initiates the process of separating the values from the wastes. From the ore-roasting oven, the heated ore is channeled to the quench chambers where it is cooled very quickly which results in the breaking up of the ore into its constituent components.

    摘要翻译: 提供了一种以专门设计的主磨机开始的矿石分离过程。 初级研磨机将矿石研磨成细粉末,然后将其吹入初级尺寸袋式空间,将较小的颗粒与较大的颗粒分离。 将过大的颗粒引导到二次研磨机,再次将其研磨并吹入二次施胶袋。 重复研磨过程,直到所有的矿石都是适当的尺寸。 一旦将矿石研磨成适当的大小,将其送入焙烧炉,在其中将其与闪蒸加热的精确量的空气混合,从而启动将值与废物分离的过程。 从焙烧炉中,加热的矿石被引导到淬火室,在那里它被非常快速地冷却,这导致矿石分解成其组成成分。