MODERATELY OXIDIZED POLYSACCHARIDE DEPRESSANTS FOR USE IN IRON ORE FLOTATION PROCESSES

    公开(公告)号:US20170100724A1

    公开(公告)日:2017-04-13

    申请号:US15275869

    申请日:2016-09-26

    申请人: Kemira Oyj

    发明人: Duane C. Wilson

    IPC分类号: B03D1/016 B03D1/02 C08B31/18

    摘要: Depressants comprising a moderately oxidized polysaccharide having about 0.05 to about 4.5 mmol of anionic charge per gram at a pH of about 6 to about 7, or about 0.2 to about 5 mmol of anionic charge per gram at a pH of about 10 to about 11.2, are provided. Also disclosed are processes for enriching a desired mineral from an ore comprising the desired mineral and gangue, wherein the process comprises carrying out a flotation process in the presence of one or more of the depressants.

    Process of leaching gold
    52.
    发明授权
    Process of leaching gold 有权
    浸金过程

    公开(公告)号:US09593394B2

    公开(公告)日:2017-03-14

    申请号:US14336138

    申请日:2014-07-21

    摘要: Disclosed is a process of leaching gold that can be inexpensively and efficiently carried out from a mixture containing sulfur and gold, typically from the material containing sulfur and gold that is an intermediate product recovered by the flotation method in the hydrometallurgical method. Specifically, disclosed is a process of leaching gold from the mixture containing elemental sulfur and gold, the process involving combining the mixture containing elemental sulfur and gold and an aqueous solution of hydroxide of one or more of metals of alkali metals and alkaline earth metals, the hydroxides reacting with elemental sulfur to form thiosulfate of alkali and/or alkaline earth metal, and the gold thereby being leached by reaction with the thiosulfate.

    摘要翻译: 公开了一种浸出金的方法,其可以从含有硫和金的混合物中经常地和有效地进行,通常是通过湿法冶金法通过浮选法回收的作为中间产物的硫和金的材料。 具体地,公开了从含有元素硫和金的混合物中浸出金的方法,该方法包括将含有元素硫和金的混合物与一种或多种碱金属和碱土金属的金属的氢氧化物水溶液组合, 氢氧化物与元素硫反应以形成碱金属和/或碱土金属的硫代硫酸盐,并且金由此通过与硫代硫酸盐反应而浸出。

    LIQUID PROCESSING METHOD AND LIQUID PROCESSING APPARATUS
    53.
    发明申请
    LIQUID PROCESSING METHOD AND LIQUID PROCESSING APPARATUS 审中-公开
    液体加工方法和液体加工设备

    公开(公告)号:US20170032984A1

    公开(公告)日:2017-02-02

    申请号:US15219430

    申请日:2016-07-26

    摘要: Disclosed is a method of performing a liquid processing on a workpiece by a liquid containing charged minute metal-containing impurities, using a liquid processing apparatus including: a holding unit configured to hold the workpiece; and a liquid supplying mechanism configured to supply a liquid to the workpiece held by the holding unit. The method includes: removing the metal-containing impurities contained in the liquid while supplying the liquid to the workpiece held by the holding unit; and/or controlling charging of the workpiece held by the holding unit to suppress the metal-containing impurities from being attached to the workpiece by an electrostatic force.

    摘要翻译: 公开了一种使用液体处理装置,通过含有微量含金属杂质的液体对工件进行液体处理的方法,该液体处理装置包括:保持单元,其构造成保持工件; 以及液体供给机构,其构造成将液体供给到由所述保持单元保持的工件。 该方法包括:在将液体供给到由保持单元保持的工件上时,去除包含在液体中的含金属杂质; 和/或控制由保持单元保持的工件的充电,以通过静电力来抑制含金属杂质附着在工件上。

    CLAY FLOTATION OF TAILINGS
    55.
    发明申请
    CLAY FLOTATION OF TAILINGS 审中-公开
    尾矿的粘土浮选

    公开(公告)号:US20160310964A1

    公开(公告)日:2016-10-27

    申请号:US14943906

    申请日:2015-11-17

    摘要: A process for treating and dewatering tailings comprising fine clay minerals, fine silt minerals and water is provided, comprising treating the tailings with a sufficient amount of a clay surface reagent to selectively modify the surface properties of the fine clay minerals; subjecting the treated tailings to froth flotation to float a portion of the fine clay minerals and form a clay froth layer and froth flotation tails having a reduced fine clay minerals content; and recovering the clay froth layer and subjecting it to dewatering.

    摘要翻译: 提供了一种处理和脱水尾矿的方法,其包括细小的粘土矿物,细小的淤泥矿物和水,包括用足量的粘土表面试剂处理尾矿,以选择性地改性细粘土矿物的表面性质; 经处理的尾矿泡沫浮选以漂浮一部分细粘土矿物并形成粘土泡沫层和具有降低的细粘土矿物质含量的泡沫浮选尾料; 并回收粘土泡沫层并使其脱水。

    Method of using a flotation machine that is used in metallurgical processes and a flotation machine
    58.
    发明授权
    Method of using a flotation machine that is used in metallurgical processes and a flotation machine 有权
    使用冶金工艺中使用的浮选机和浮选机的方法

    公开(公告)号:US09283571B2

    公开(公告)日:2016-03-15

    申请号:US14704734

    申请日:2015-05-05

    申请人: OUTOTEC OYJ

    IPC分类号: B03D1/02 B03D1/16

    摘要: The invention relates to a method of using a flotation machine that is used in metallurgical processes and to a flotation machine. The flotation machine foams hydrophobic particles from an aqueous slurry that contains these particles. The flotation machine includes a flotation cell (1), and a rotor (2) that is inside the flotation cell. The rotor (2) is rotated at a mixing power, which maintains the suspension in the slurry and mixing of air with the slurry to form the foam, and the mixing power is controlled by adjusting the rotation speed of the rotor. The amount of solid matter S accumulated on the bottom of the cell (1) is determined, and the rotation speed of the rotor (2) is adjusted on the basis of the determined amount of solid matter. The flotation machine includes a measuring device (5) for determining the amount of solid matter accumulated on the bottom of the cell. The adjusting device (4) is arranged to adjust the rotation speed of the motor (3), which rotates the rotor (2), on the basis of the measuring result of the measuring device (5) to remove the solid matter from the bottom of the cell.

    摘要翻译: 本发明涉及一种使用在冶金工艺和浮选机中使用的浮选机的方法。 浮选机从含有这些颗粒的含水浆液中发泡疏水性颗粒。 浮选机包括浮选槽(1)和位于浮选槽内的转子(2)。 转子(2)以混合动力旋转,其将悬浮液保持在浆料中并且将空气与浆料混合以形成泡沫,并且通过调节转子的转速来控制混合动力。 确定积聚在电池(1)的底部的固体物质S的量,并且基于确定的固体物质量来调节转子(2)的转速。 浮选机包括用于确定积聚在电池底部的固体物质量的测量装置(5)。 调整装置(4)根据测定装置(5)的测定结果,调整转子(2)旋转的马达(3)的转速,从底部排出固体物质 的细胞。

    Method for cleaning cellulose suspensions
    59.
    发明授权
    Method for cleaning cellulose suspensions 有权
    清洁纤维素悬浮液的方法

    公开(公告)号:US09238888B2

    公开(公告)日:2016-01-19

    申请号:US14727766

    申请日:2015-06-01

    摘要: The present invention concerns a hydrocyclone for cleaning cellulose suspensions from light impurities i.e. a so called reverse hydrocyclone, having a base end and an apex end and a separation chamber having an elongated shape between the base end and the apex end, at least one inlet arranged at the base end and at least one underflow outlet at the apex end and at least one overflow outlet at the base end. The overflow outlet is provided with an additional, light reject outlet arranged concentrically to a length axis of the hydrocyclone. The invention also concerns a system and a method for producing and/or treating cellulose suspension comprising at least a reverse cleaning stage and at least a dewatering stage.

    摘要翻译: 本发明涉及一种用于从轻质杂质(即所谓的逆水力旋流器)清洗纤维素悬浮液的水力旋流器,具有基端和顶端,以及在基端和顶端之间具有细长形状的分离室,至少一个入口布置 在顶端处具有至少一个下溢出口,在基端处具有至少一个溢流出口。 溢流出口设置有与水力旋流器的长度轴同心布置的另外的轻质拒收口。 本发明还涉及一种用于生产和/或处理纤维素悬浮液的系统和方法,所述纤维素悬浮液至少包括反向清洗阶段和至少脱水阶段。