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    从异性石中回收稀土的方法
    1.
    发明申请
    从异性石中回收稀土的方法 审中-公开

    公开(公告)号：WO2022188248A1

    公开(公告)日：2022-09-15

    申请号：PCT/CN2021/089634

    申请日：2021-04-25

    Applicant: 中国地质科学院矿产综合利用研究所

    Inventor： 熊文良 ,  张丽军 ,  周家云 ,  蔺慧杰 ,  陈达 ,  颜世强

    IPC: C22B1/00 ,  C22B3/00 ,  B02C21/00 ,  C22B3/06 ,  C22B3/08 ,  C22B3/10 ,  C22B59/00 ,  B03C1/02 ,  B07C5/342

    Abstract: 本发明涉及异性石选矿技术领域，公开了从异性石中回收稀土的方法，包括以下步骤：S1.对原矿进行破碎和筛分，得到待分离矿石以及第一尾矿；S2.对所述待分离矿石进行色选，得到色选精矿以及第二尾矿；S3.对所述色选精矿进行磨矿，得到矿浆；S4.对所述矿浆进行磁选，得到含稀土的异性石精矿，以及第三尾矿；S5.对所述含稀土的异性石精矿进行浸出，得到稀土浸出液以及浸渣；本发明将色选+磁选联合工艺应用于异性石选矿，实现了低品位含稀土异性石矿的选别，为异性石转变为具有经济价值的矿物提供了技术前提；同时，本发明的浸出率可达97.3％，同时整个工艺流程中3处抛尾的稀土总损失率低于40％，达到了选矿效率高、磁选矿石量小、能耗低和环境友好的效果。

    PROCESS FOR THE RECOVERY OF TITANIUM DIOXIDE, VANADIUM AND IRON COMPOUNDS FROM VARIOUS MATERIALS
    5.
    发明申请
    PROCESS FOR THE RECOVERY OF TITANIUM DIOXIDE, VANADIUM AND IRON COMPOUNDS FROM VARIOUS MATERIALS 审中-公开

    公开(公告)号：WO2021072534A1

    公开(公告)日：2021-04-22

    申请号：PCT/CA2020/051376

    申请日：2020-10-15

    Applicant: 9203-5468 QUEBEC INC. DBA NMR360

    Inventor： HARRIS, Bryn ,  WHITE, Carl

    IPC: C01G23/047 ,  B01D11/02 ,  C01G31/00 ,  C01G49/00 ,  C22B3/10 ,  C22B3/22 ,  C22B3/44 ,  C22B7/00 ,  C22B34/12

    Abstract: A process for the recovery of titanium dioxide from various feedstocks comprising titanium, vanadium and iron compounds is disclosed. The process comprises: leaching the feed material with a first HCl solution (e.g. 20% by weight or more), to obtain a first leachate comprising iron compounds and a magnetic concentrate comprising titanium dioxide; leaching the magnetic concentrate comprising titanium dioxide with a second HCl solution (e.g. 20% by weigh or more), in the presence of a reductant, to obtain a second leachate comprising soluble titanium and a solid residue; removing the solid residue; and hydrolysing the second leachate in presence of an oxidant to obtain pure titanium dioxide and HCl solution. The process also allows recovering the vanadium that is almost always associated with titanium, while ensuring reducing conditions without the necessity to add large quantities of reductant to account for the reduction of ferric iron to ferrous.

    SOLID-STATE CATALYSTS FOR LOW OR MODERATE TEMPERATURE LEACH APPLICATIONS AND METHODS THEREOF
    6.
    发明申请
    SOLID-STATE CATALYSTS FOR LOW OR MODERATE TEMPERATURE LEACH APPLICATIONS AND METHODS THEREOF 审中-公开

    公开(公告)号：WO2020044241A1

    公开(公告)日：2020-03-05

    申请号：PCT/IB2019/057219

    申请日：2019-08-27

    Applicant: FLSMIDTH A/S

    Inventor： CHAIKO, David J.

    IPC: C22B3/02 ,  C22B3/10 ,  C22B3/44

    Abstract: A method for removing sulfate iron-containing compounds from a low- to moderate-temperature metal sulfide leach circuit (1) is disclosed. A reactor (6) within a chloride leach circuit (5) and which is preferably maintained at a temperature between 20 and 150 degrees Celsius may be provided with a catalyst (4) comprising a material selected from the group consisting of: colloidal hematite, colloidal goethite, particulate containing FeOOH, particulate containing α-FeOOH, particulate containing γ-FeOOH, particulate containing Fe 2 O 3 , particulate containing α-Fe2O3, particulate containing γ-Fe 2 O 3 , particulate containing Fe 3 O 4 , particulate containing Fe(OH)SO4, and a combination thereof. The catalyst (4) may also be used with heap leach and/or dump leach circuits (22), without limitation. Methods for using and generating the catalyst (4) are also disclosed. In some embodiments, the catalyst (4) may be used as an anti-frothing agent (e.g., for zinc leaching, without limitation).

    MÉTODO PARA LA EXTRACCIÓN DE METALES, POR MEDIO DE LIXIVIACIÓN ÁCIDA
    7.
    发明申请
    MÉTODO PARA LA EXTRACCIÓN DE METALES, POR MEDIO DE LIXIVIACIÓN ÁCIDA 审中-公开
    通过酸浸法提取金属的方法

    公开(公告)号：WO2016099249A1

    公开(公告)日：2016-06-23

    申请号：PCT/MX2015/000226

    申请日：2015-12-21

    Applicant: GMO METALURGIA, S.A.P.I. DE C.V.

    Inventor： GUERRERO OROZCO, Jose Alfredo ,  MANCILLA PRADO, Pedro

    IPC: C22B3/04 ,  C22B3/10 ,  C22B15/00

    CPC classification number: C22B3/04 ,  C22B3/10 ,  C22B15/00 ,  Y02P10/234

    Abstract: Un método para la extracción de metales, a partir de una fuente mineral, mediante lixiviación ácida, el cual inicia a partir de legir una fuente mineral rica en el metal de interés, como cobre, plata, oro, entre otros; triturar la fuente mineral a un tamaño de partícula no mayor a 6 mm; mezclar el mineral triturado con cloruro de sodio (NaCl); lixiviar una solución de lixiviación, que comprende ácido sulfúrico (H2SO4) y agua; recircular la solución de lixiviación sobre la mezcla; precipitar el metal de la solución lixiviadora en una pila de precipitación, que contiene placas de fierro; remover el metal precipitado de las placas de fierro, por medio de un chorro de agua a presión; lavar el metal precipitado ya desprendido para retirar las partículas de fierro adheridas al metal; lavar con agua simple para retirar los residuos del ácido clorhídrico; reposar el producto precipitado, por alrededor de 5 min, sumergido en una solución formadora de una capa protectora contra la oxidación; retirar el metal precipitado de la solución; y secar de manera convencional.

    Abstract translation: 本发明涉及通过酸浸法从矿物源提取金属的方法，该方法包括以下步骤：选择富含感兴趣的金属的矿物源，例如铜，银和/ 或金; 将矿物质粉碎至不大于6毫米的粒度; 将破碎的矿物与氯化钠（NaCl）混合; 浸出包含硫酸（H 2 SO 4）和水的浸出溶液; 将混合物中的浸出液再循环; 将沉淀液中的金属沉淀在含有铁板的沉淀堆中; 通过加压水射流从铁板上除去沉淀的金属; 洗涤已经分离的沉淀金属以除去附着在金属上的铁颗粒; 用普通水洗涤以除去盐酸的残留物; 静置沉淀的产物约5分钟，浸没在形成防氧化保护层的溶液中; 从溶液中除去沉淀的金属; 并以常规方式干燥。

    PROCESSES FOR DECOMPOSING ALUMINUM CHLORIDE INTO ALUMINA
    9.
    发明申请
    PROCESSES FOR DECOMPOSING ALUMINUM CHLORIDE INTO ALUMINA 审中-公开
    将氯化铝分解成铝的方法

    公开(公告)号：WO2015176166A1

    公开(公告)日：2015-11-26

    申请号：PCT/CA2015/000334

    申请日：2015-05-21

    Applicant: ORBITE TECHNOLOGIES INC.

    Inventor： ALIZADEH, Ebrahim ,  BOUFFARD, Jonathan ,  DUMONT, Hubert

    IPC: C01F7/30 ,  C01F7/02 ,  C22B3/10

    CPC classification number: C01F7/56 ,  C01F7/306 ,  C01P2002/88 ,  C01P2004/60 ,  C01P2006/80

    Abstract: There are provided processes for decomposing AlCl 3 •6H 2 O into γ-Al 2 O 3 that comprise heating the AlCl 3 •6H 2 O at a temperature of about 600°C to about 800°C in the presence of steam and optionally at least one gas (for example chosen from air, argon, nitrogen, carbon dioxide, hydrogen and hydrochloric acid), under conditions suitable to obtain the γ-Al 2 O 3 . For example, the γ-Al 2 O 3 obtained can be suitable for use in an aluminum smelting process or optionally for processes for treating the γ-Al 2 O 3 to obtain high purity alumina, fused alumina, transition alumina, tabular alumina, calcined alumina, ultra-pure alumina or specialty alumina.

    Abstract translation: 提供了将AlCl 3·6H 2 O分解成γ-Al 2 O 3的方法，其包括在蒸汽和任选的至少一种气体（例如选自空气）的情况下，在约600℃至约800℃的温度下加热AlCl 3·6H 2 O ，氩气，氮气，二氧化碳，氢气和盐酸）中，在适于获得γ-Al 2 O 3的条件下进行。 例如，所得到的γ-Al 2 O 3可适用于铝冶炼工艺，也可适用于处理γ-Al2O3以获得高纯度氧化铝，熔融氧化铝，过渡型氧化铝，片状氧化铝，煅烧氧化铝，超纯氧化铝 或特种氧化铝。

    THE PRODUCTION OF HIGH-GRADE SYNTHETIC RUTILE FROM LOW-GRADE TITANIUM-BEARING ORES
    10.
    发明申请
    THE PRODUCTION OF HIGH-GRADE SYNTHETIC RUTILE FROM LOW-GRADE TITANIUM-BEARING ORES 审中-公开
    从低等级钛合金轴承生产高级合成织物

    公开(公告)号：WO2015131266A1

    公开(公告)日：2015-09-11

    申请号：PCT/CA2015/000128

    申请日：2015-02-27

    Applicant: KAMALEDDINE, Fouad F.

    Inventor： KAMALEDDINE, Fouad F.

    IPC: C22B3/10 ,  B01D3/00 ,  C01B7/07 ,  C22B3/22 ,  C01G23/047 ,  C22B34/12

    CPC classification number: B01D3/36 ,  C01B7/035 ,  C01B7/0712 ,  C01G23/053 ,  C01G23/0536 ,  C01G31/003 ,  C01G31/02 ,  C01G49/06 ,  C01G49/10 ,  C01G51/003 ,  C01G51/04 ,  C22B34/22 ,  C22B34/32

    Abstract: The present invention relates, first, to a two-stage leaching process using concentrated hydrochloric acid wherein ground ore is leached with two separate quantities of hydrochloric acid at different temperatures. Second, the invention relates to a one-step leaching process using concentrated HCl and a fixed acid to ore ratio to prevent hydrolysis of titanium. Afterwards the dissolved titanium is precipitated from the filter liquor by hydrolysis and the still soluble iron chlorides are then optionally subjected to oxyhydrolysis to recover iron oxide and HCl. The process was developed for low-grade ores (under 12% Ti02), and can naturally be applied advantageously to higher grade titanium-bearing ores, that upgrades a variety of inferior quality titanium-iron ores into premium titanium concentrate and iron oxide products.

    Abstract translation: 本发明首先涉及使用浓盐酸的两级浸提方法，其中在不同温度下用两种分开的盐酸浸出研磨的矿石。 第二，本发明涉及使用浓HCl和固定的酸与矿石比例的一步浸出方法以防止钛的水解。 然后，溶解的钛通过水解从过滤液中沉淀出来，然后任选地将可溶性氯化铁进行羟水解以回收氧化铁和HCl。 该方法是针对低品位矿石（12％以下的二氧化钛）开发的，可以有利地应用于高品位的含钛矿石，将各种劣质钛铁矿石升级为优质钛精矿和氧化铁产品。

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