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    METHOD FOR PROCESS WATER TREATMENT
    2.
    发明申请
    METHOD FOR PROCESS WATER TREATMENT 审中-公开

    公开(公告)号：WO2021084155A1

    公开(公告)日：2021-05-06

    申请号：PCT/FI2019/050768

    申请日：2019-10-28

    Applicant: OUTOTEC (FINLAND) OY

    Inventor： JANSSON, Kaj

    IPC: B03D1/02 ,  C02F1/24 ,  B03B7/00 ,  C22B15/00 ,  C22B23/00 ,  B03D103/02 ,  C02F103/16

    Abstract: A method for treating process water of a flotation arrangement (1) is disclosed, the flotation arrangement comprising flotation arrangement (1) comprising a mineral flotation line (10) and a process water treatment arrangement (20) for treating underflow of the mineral flotation line. The method comprises the steps of a) dewatering underflow from the flotation in a gravitational solid-liquid separator (21); b) subjecting supernatant (221) from step a) to cleaning flotation for collecting at least fine particles and residual flotation chemicals, for separating at least fine particles and residual flotation chemicals from the supernatant into cleaning flotation overflow (232), and for forming purified process water (231) as cleaning flotation underflow; c) removing cleaning flotation overflow (232) as tailings, and d) recirculating purified process water (231) into the mineral flotation line (10).

    FLOTATION CELL
    3.
    发明申请
    FLOTATION CELL 审中-公开

    公开(公告)号：WO2020025850A1

    公开(公告)日：2020-02-06

    申请号：PCT/FI2018/050565

    申请日：2018-08-01

    Applicant: OUTOTEC (FINLAND) OY

    Inventor： BOURKE, Peter ,  SCHMIDT, Steve ,  RINNE, Antti ,  TUOMINEN, Jere ,  VAARNA, Valtteri ,  PELTOLA, Aleksi

    IPC: B03D1/14 ,  B03D1/24 ,  B03D103/02

    Abstract: A flotation cell (1) for treating particles suspended in slurry and for separating the slurry into an underflow (400) and an overflow (500) is disclosed. The flotation cell comprises a flotation tank (10) with a centre (11), a perimeter (12), a bottom (13), and a side wall (14); and a launder (2) and a launder lip (21) surrounding the perimeter (12) of the flotation tank. The flotation tank further comprises blast tubes (4) for introducing slurry infeed (100) into the tank, a blast tube comprising an inlet nozzle (41), an inlet (42) for pressurized gas, an elongated chamber (40) and an outlet nozzle (43). The outlet nozzle is positioned at a vertical distance (L5) from the launder lip, the distance (L5) being at least 1,5 m. In addition, a flotation line and use of the flotation line are disclosed.

    DIFFERENTIAL FLOTATION OF SULFIDE ORES FOR RECOVERING REFRACTORY GOLD
    4.
    发明申请
    DIFFERENTIAL FLOTATION OF SULFIDE ORES FOR RECOVERING REFRACTORY GOLD 审中-公开
    硫化物矿石微分浮选回收难处理金矿石

    公开(公告)号：WO2017064369A1

    公开(公告)日：2017-04-20

    申请号：PCT/FI2016/050713

    申请日：2016-10-12

    Applicant: OUTOTEC (FINLAND) OY

    Inventor： MOILANEN, Jari ,  LEPPINEN, Jaakko

    IPC: B03D1/06 ,  B03D101/06 ,  B03D103/02

    CPC classification number: B03D1/06 ,  B03D2201/06 ,  B03D2203/025

    Abstract: Provided herein is a process for recovery of gold from gold-containing raw materials comprising refractory gold-containing minerals, in particular gold-containing refractory sulfidic minerals, comprising (a) obtaining gold-containing raw material comprising refractory gold-containing sulfidic minerals comprising first type of refractory sulfidic mineral having high gold content and second type of sulfidic mineral having low gold content; (b) forming a mineral pulp comprising first type of refractory sulfidic mineral particles having high gold content and second type of sulfidic mineral particles having low gold content by suspending ground gold-containing material in water and optionally further milling the material; (c) conditioning the mineral pulp by addition of a surface modifying chemical for modifying the surface of the first type of refractory sulfidic mineral particles having high content thus making the said particles non-floatable to obtain a conditioned pulp; (d) subjecting the conditioned pulp to a froth flotation process to separate first type of refractory sulfidic mineral particles having high gold content from the second type of sulfidic mineral particles having low gold content; (e) recovering the non-floatable first type of refractory sulfidic mineral particles having high cold content as flotation tailings; (f) pressure oxidizing (POX) the flotation tailings recovered in step (e) to obtain a discharge slurry comprising liberated gold; and (g) recovering gold from the discharge slurry obtained in step (f).

    Abstract translation: 本文提供了用于从包含难熔含金矿物，特别是含金耐火硫化矿物的含金原料中回收金的方法，其包括（a）获得含金原料，所述含金原料包含 包含具有高金含量的第一类耐火硫化矿物和具有低金含量的第二类硫化矿物的难处理含金硫化物矿物; （b）通过将磨碎的含金材料悬浮在水中并任选地进一步研磨所述材料，形成包含具有高含金量的第一类耐火硫化矿物颗粒和具有低金含量的第二类硫化矿物颗粒的矿物纸浆; （c）通过添加表面改性化学品来调节矿物质纸浆，以改性具有高含量的第一类耐火硫化物矿物颗粒的表面，从而使所述颗粒不可漂浮以获得调理纸浆; （d）使经过调节的纸浆经过泡沫浮选过程以将具有高含金量的第一类耐火硫化矿物颗粒与具有低金含量的第二类硫化矿物颗粒分离; （e）回收具有高冷含量的不可漂浮的第一类耐火硫化矿物颗粒作为浮选尾矿; （f）对在步骤（e）中回收的浮选尾矿进行压力氧化（POX）以获得包含释放的金的排放泥浆; 和（g）从步骤（f）中得到的排放泥浆中回收金。

    一种多通道的文丘里管水力空化发生装置
    6.
    发明申请
    一种多通道的文丘里管水力空化发生装置 审中-公开

    公开(公告)号：WO2023070832A1

    公开(公告)日：2023-05-04

    申请号：PCT/CN2021/135370

    申请日：2021-12-03

    Applicant: 江苏大学

    Inventor： 史鸿博 ,  李亚林

    IPC: B03D1/02 ,  B03D1/16 ,  B03D103/02

    Abstract: 本发明公开了一种多通道的文丘里管水力空化发生装置，涉及水力空化技术领域，弧形喉管和喉管段的输入端与进口管输出端相通，喉管段的输出端连接有扩展段；扩展段为渐扩管，扩展段内通过固定杆设置有阻流体；弧形喉管上连通有环形管，所述环形管的输出端设置有分流喉管；所述分流喉管的输出端设置于扩展段内，且置于阻流体的上方位置。通过设置弧形喉管和环形管当水流进入时通过多条分流喉管将水流分流，并在环形管内进行空化排出，而正常通过文丘里管的水流则会通过阻流体再次分流进行空化，从而达到多次空化的效果，解决了传统文丘里管中只有单一空化途径所造成的空化不彻底问题，具备在有限的空间内多次空化以加强空化效率的优点。

    FLOTATION CELL
    9.
    发明申请
    FLOTATION CELL 审中-公开

    公开(公告)号：WO2021019122A1

    公开(公告)日：2021-02-04

    申请号：PCT/FI2019/050568

    申请日：2019-07-29

    Applicant: OUTOTEC (FINLAND) OY

    Inventor： RINNE, Antti

    IPC: B03D1/14 ,  B03D1/24 ,  B03D1/16 ,  B03D103/02

    Abstract: A flotation cell for treating particles suspended in slurry is disclosed. The flotation cell comprises a fluidized bed (10), a recovery zone(20) at the upper part (13) of the flotation cell, a launder lip (26) and a recovery launder (24), and a tailings outlet (12). A primary slurry feed (100) comprising fresh slurry is arranged to be fed into the flotation cell by a first feed inlet (14) at a first position (P); and a secondary slurry feed (200) comprising at least slurry recirculated from a flotation cell is arranged to be fed into the fluidized bed by a second feed inlet (15) at a second position (S), below the first position. The slurry recirculated from the flotation cell is obtained at a third position (R) between the recovery launder and the tailings outlet. A use of the flotation cell as well as a method for treating particles suspended in slurry are also disclosed.

    淤浆法制备黄原酸盐的方法及系统
    10.
    发明申请
    淤浆法制备黄原酸盐的方法及系统 审中-公开

    公开(公告)号：WO2020029488A1

    公开(公告)日：2020-02-13

    申请号：PCT/CN2018/119611

    申请日：2018-12-06

    Applicant: 中南大学

    Inventor： 钟宏 ,  马鑫 ,  王帅

    IPC: B03D1/002 ,  C07C329/14 ,  B03D101/02 ,  B03D103/02

    Abstract: 公开了一种淤浆法制备黄原酸盐的方法及系统，所述方法通过在淤浆反应器中加入二氯甲烷和二硫化碳混合物作反应溶剂，然后加入醇和苛性碱与二硫化碳反应，反应在低于1个大气压的条件下进行，溶剂蒸发移走反应放出的热量；反应完毕后继续减压蒸馏，脱除溶剂和水，得到黄原酸盐；将黄原酸盐转入造粒设备中造粒，然后进入干燥设备中干燥，得到产品。所述方法在一套由反应设备、溶剂回收设备、造粒设备和干燥设备组成的系统中进行，其中反应系统的主体设备是淤浆反应器。该方法具有效率高、能耗低、安全性好、环境友好、操作方便等优点，减少了反应过程所需的冷却水，易于实现工业化。

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