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    GAS RECIRCULATION IN MINERAL FLOTATION
    1.
    发明申请
    GAS RECIRCULATION IN MINERAL FLOTATION 审中-公开

    公开(公告)号：US20180353971A1

    公开(公告)日：2018-12-13

    申请号：US15781488

    申请日：2016-12-07

    Applicant: OUTOTEC (FINLAND) OY

    Inventor： Jukka LAKANEN

    IPC: B03D1/04 ,  B03D1/02 ,  B03D1/14

    CPC classification number: B03D1/04 ,  B03D1/028 ,  B03D1/14

    Abstract: An arrangement for recirculation of flotation gas in a mineral flotation process wherein the flotation gas volume fluctuations are handled by a closed pressure equalization loop including an apparatus for storing gas and adsorbing changes of gas pressure; a flushing line for connecting the pressure side of the primary gas recirculation loop to the apparatus for storing gas and adsorbing changes of gas pressure for allowing expulsion of a fraction of the flotation gas from the primary gas recirculation loop; and a suction line for connecting the suction side of the primary gas recirculation loop to the apparatus for storing gas and adsorbing changes of gas pressure, whereby the suction line comprises a pressure reducer for restricting flotation gas flow through the suction line.

    Process for the recovery of copper and zinc values from sulphidic ore
    3.
    发明授权
    Process for the recovery of copper and zinc values from sulphidic ore 失效
    从硫化矿中回收铜和锌的过程

    公开(公告)号：US4279867A

    公开(公告)日：1981-07-21

    申请号：US129926

    申请日：1980-03-13

    Applicant: Donald R. Weir

    Inventor： Donald R. Weir

    IPC: C22B19/00 ,  B03B9/00 ,  B03D1/02 ,  B03D1/06 ,  C22B15/00 ,  C22B19/02 ,  C22B19/20 ,  C01G9/06

    CPC classification number: B03D1/06 ,  B03B9/00 ,  B03D1/02 ,  C22B19/22 ,  B03D1/04 ,  Y02P10/234

    Abstract: A process for the recovery of copper and zinc values from copper and zinc containing sulphidic ore includes subjecting ground ore to a flotation operation. An initial copper concentrate is floated in a first flotation step, and the initial copper concentrate is fed to a second flotation step to float a relatively zinc free copper concentrate. Remaining ore from the first flotation step is fed to a third flotation step to float an initial zinc concentrate, and remaining ore from the third flotation step is fed to a fourth flotation step to float a copper and zinc containing material. An intermediate concentrate containing from about 5 to about 25% copper and from about 2 to about 25% zinc, with a total of at least about 12% copper and zinc, is produced by selecting at least the remaining ore from the second flotation step, and a zinc concentrate containing at least about 20% zinc is produced by at least selecting a portion of the initial zinc concentrate.

    Abstract translation: 从含铜和锌的硫化矿石中回收铜和锌的值的方法包括对地矿进行浮选操作。 将初始铜精矿漂浮在第一浮选步骤中，并将初始铜精矿进料至第二浮选步骤以漂浮相对无锌的铜精矿。 将来自第一浮选步骤的剩余矿石进料到第三浮选步骤以漂浮初始锌精矿，并将来自第三浮选步骤的剩余矿石进料至第四浮选步骤以漂浮含铜和锌的材料。 通过从第二浮选步骤中选择至少剩余的矿石来生产含有约5至约25％的铜和约2至约25％的锌，总共至少约12％的铜和锌的中间浓缩物， 并且通过至少选择一部分初始锌精矿来生产含有至少约20％锌的锌精矿。

    Method of and apparatus for the flotation of mineral raw materials
    4.
    发明授权
    Method of and apparatus for the flotation of mineral raw materials 失效
    矿物原料浮选方法及装置

    公开(公告)号：US4279742A

    公开(公告)日：1981-07-21

    申请号：US962045

    申请日：1978-11-20

    Applicant: Rumen V. Ivanov ,  Dobrin V. Nikolov ,  Ulrich Bilsing ,  Heinz Weber ,  Manfred Schmidt

    Inventor： Rumen V. Ivanov ,  Dobrin V. Nikolov ,  Ulrich Bilsing ,  Heinz Weber ,  Manfred Schmidt

    IPC: B03D1/04 ,  B03D1/14 ,  B03D1/02

    CPC classification number: B03D1/04 ,  B03D1/028 ,  B03D1/1406

    Abstract: A method of and apparatus for the flotation of mineral feedstock using the method of froth flotation. The method may be employed with flotation machines having their own air suction, or with flotation machines with subaeration. Pulps pretreated with flotation agents and having a density up to twice the normal density of ore pulps are submitted to a flotation process with a pulsed air flow by means of normal air supply periods alternating with periods wherein the quantity of air ranges from 1-90% of the normal air supply. The apparatus for carrying out said method makes use of known flotation machines with rotor-stator systems, which machines are modified to provide them with an air duct incorporating an air flow regulating member connected to an appropriate control means. With the existing methods of flotation there are obtained about 400 gr/l of solids in the pulp. With the present method with pulsing air supply there can be obtained about 800 gr/l of solids in the pulp.

    Abstract translation: 使用泡沫浮选方法浮选矿物原料的方法和设备。 该方法可以与具有它们自己的空气抽吸的浮选机器一起使用，或者与具有通气的浮选机一起使用。 用浮选剂预处理并具有高达正常密度的矿浆的两倍的浆料的纸浆通过正常的空气供应周期与脉冲气流一起进行浮选过程，其中空气的量为1-90％ 的正常空气供应。 用于执行所述方法的装置利用已知的具有转子 - 定子系统的浮选机，这些机器被修改以为它们提供一个包含连接到适当的控制装置的空气流量调节构件的空气管道。 利用现有的浮选方法，在纸浆中获得约400g / l的固体。 利用脉冲空气供应的本发明方法，可以获得纸浆中约800g / l的固体。

    Process for the removal of suspended grains from sodium aluminate liquor
    5.
    发明授权
    Process for the removal of suspended grains from sodium aluminate liquor 失效
    从铝酸钠液体中除去悬浮颗粒的方法

    公开(公告)号：US3901803A

    公开(公告)日：1975-08-26

    申请号：US35617673

    申请日：1973-05-01

    Applicant: MAGYAR ALUMINIUM

    Inventor： HARSANYI JOZSEF ,  NAGY PETER

    IPC: B03D1/04 ,  C01F7/47 ,  C01F7/46

    CPC classification number: C01F7/47 ,  B03D1/04 ,  B03D1/1431

    Abstract: The process according to the invention relates to the continuous or intermittent removal of suspended particles from sodium aluminate liquor in such a manner that the sodium aluminate liquor is flown under an overpressure of 1-5 at. while gas or preferably air is dissolved in it following which, through a pressure releasing device, it is conducted into a closed tank, the upper part of which is kept at a vacuum of at least 50 Torr; the foamy phase separating there and entraining the suspended grains is drained through a vacuum pipe and sodium aluminate liquor having thus been cleaned from the suspended grains is drained away in the proximity of the liquid level height. The invention can be applied for the removal of suspended impurities in the sodium aluminate liquor denominated in the alumina plant practice as alumina-, spent- and thick-liquor; this process had been previously practiced by means of filtering, settling or centrifuging.

    NANOBUBBLES FOR ENHANCED INTERACTION BETWEEN SOLIDS AND GAS VOLUMES
    9.
    发明申请
    NANOBUBBLES FOR ENHANCED INTERACTION BETWEEN SOLIDS AND GAS VOLUMES 审中-公开
    用于固体和气体体积之间增强相互作用的纳米颗粒

    公开(公告)号：US20170043356A1

    公开(公告)日：2017-02-16

    申请号：US14822325

    申请日：2015-08-10

    Applicant: International Business Machines Corporation

    Inventor： Julia S. Baldauf ,  Alexe Bojovschi ,  Stephen M. Moore ,  Priscilla R. Rogers ,  Christine Schieber

    IPC: B03D1/02 ,  B03D1/04

    CPC classification number: B03D1/028 ,  B03D1/02 ,  B03D1/04 ,  B03D1/1431

    Abstract: Nanobubbles are employed to bridge microbubbles and non-buoyant particles, thereby creating sufficient capillary forces between the particles and microbubbles such that relatively large, heavy particles can be separated from an aqueous slurry. Nanobubbles are formed on hydrophobic particle surfaces. The microbubbles, which function as collecting air bubbles, form attachments with the particles. The nanobubbles create additional capillary attachment forces between the particles and microbubbles, allowing the microbubbles to rise with the attached particles to the top of the slurry for separation and recovery.

    Abstract translation: 纳米气泡用于桥接微泡和非浮力颗粒，从而在颗粒和微泡之间产生足够的毛细管力，使得相对较大的重颗粒可以与含水浆液分离。 纳米泡沫形成在疏水性颗粒表面。 用作收集气泡的微泡与颗粒形成附着物。 纳米气泡在颗粒和微泡之间产生额外的毛细管附着力，允许微泡随着附着的颗粒升高到浆料的顶部以进行分离和回收。

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