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    Coal cleaning process
    24.
    发明授权
    Coal cleaning process 失效
    煤炭清洗工艺

    公开(公告)号：US5794791A

    公开(公告)日：1998-08-18

    申请号：US477658

    申请日：1995-06-07

    申请人： James Kelly Kindig

    发明人： James Kelly Kindig

    IPC分类号： B03B5/34 ,  B03B9/00 ,  B04C5/02 ,  B04C5/04 ,  B04C9/00

    CPC分类号： B03B5/447 ,  B03B5/34 ,  B03B9/005 ,  C01P2004/52 ,  C01P2004/61 ,  C01P2006/10

    摘要： Fine particle coal is beneficiated in specially designed dense medium cyclones to improve particle acceleration and enhance separation efficiency. Raw coal feed is first sized to remove fine coal particles. The coarse fraction is then separated into clean coal, middlings, and refuse. Middlings are comminuted for beneficiation with the fine fraction. The fine fraction is deslimed in a countercurrent cyclone circuit and then separated as multiple fractions of different size specifications in dense medium cyclones. The dense medium contains ultra-fine magnetite particles of a narrow size distribution which aid separation and improves magnetite recovery. Magnetite is recovered from each separated fraction independently, with non-magnetic effluent water from one fraction diluting feed to a smaller-size fraction, and improving both overall coal and magnetite recovery. Magnetite recovery is in specially designed recovery units, based on particle size, with final separation in a rougher-cleaner-scavenger circuit of magnetic drum separators incorporating a high strength rare earth magnet. The invention also contemplates a cyclone apparatus having certain preferred relationships between (a) the cyclone throughput and inlet passageway cross-sectional area; and (b) desired cyclone performance in terms of beneficiating a particle of given size at a pre-selected separation gravity to achieve a desired separation efficiency.

    摘要翻译： 精细颗粒煤在特别设计的密集介质旋风分离器中进行选矿，以提高颗粒加速度，提高分离效率。 原煤进料的尺寸首先是去除细煤颗粒。 然后将粗馏分分成干净的煤，中间料和垃圾。 粉碎粉碎以精选细分。 在逆流旋流器回路中将细分馏分离，然后在致密介质旋风分离器中分离成不同大小规格的多个馏分。 致密介质含有窄尺寸分布的超细磁铁矿颗粒，有助于分离并改善磁铁矿的回收。 从独立的每个分离的馏分中回收磁铁矿，使用来自一个馏分的非磁性流出水将进料稀释成较小的馏分，并且改善总体煤和磁铁矿回收率。 在特殊设计的回收单元中，磁铁矿的回收是基于颗粒尺寸，最后分离在包含高强度稀土磁体的磁鼓分离器的粗糙 - 清洁 - 清除 - 清除电路中。 本发明还考虑了在（a）旋风分离器产量和入口通道横截面积之间具有某些优选关系的旋风设备; 和（b）在预先选择的分离重力下选择给定尺寸的颗粒的期望的旋风性能以实现期望的分离效率。

    Coal cleaning process
    25.
    发明授权
    Coal cleaning process 失效

    公开(公告)号：US5348160A

    公开(公告)日：1994-09-20

    申请号：US988417

    申请日：1992-12-09

    申请人： James K. Kindig

    发明人： James K. Kindig

    IPC分类号： B03B5/30 ,  B03B5/34 ,  B03B5/44 ,  B03B9/00 ,  B03B13/00 ,  C01G49/06 ,  C01G49/08 ,  B04C5/00 ,  C01G49/02

    CPC分类号： B03B5/30 ,  B03B13/005 ,  B03B5/34 ,  B03B5/442 ,  B03B5/447 ,  B03B9/005 ,  C01G49/06 ,  C01G49/08 ,  C01P2004/52 ,  C01P2004/61 ,  C01P2006/10

    摘要： Fine particle coal is beneficiated in specially designed dense medium cyclones to improve particle acceleration and enhance separation efficiency. Raw coal feed is first sized to remove fine coal particles. The coarse fraction is then separated into clean coal, middlings, and refuse. Middlings are comminuted for beneficiation with the fine fraction. The fine fraction is deslimed in a countercurrent cyclone circuit and then separated as multiple fractions of different size specifications in dense medium cyclones. The dense medium contains ultra-fine magnetite particles of a narrow size distribution which aid separation and improves magnetite recovery. Magnetite is recovered from each separated fraction independently, with non-magnetic effluent water from one fraction diluting feed to a smaller-size fraction, and improving both overall coal and magnetite recovery. Magnetite recovery is in specially designed recovery units, based on particle size, with final separation in a rougher-cleaner-scavenger circuit of magnetic drum separators incorporating a high strength rare earth magnet.

    Coal cleaning process
    26.
    发明授权
    Coal cleaning process 失效
    煤炭清洗工艺

    公开(公告)号：US5314124A

    公开(公告)日：1994-05-24

    申请号：US775860

    申请日：1991-10-15

    申请人： James K. Kindig

    发明人： James K. Kindig

    IPC分类号： B03B5/30 ,  B03B5/34 ,  B03B5/44 ,  B03B9/00 ,  B03B13/00 ,  C01G49/06 ,  C01G49/08 ,  B03B5/32 ,  B03B7/00 ,  B04C5/00

    CPC分类号： B03B5/447 ,  B03B13/005 ,  B03B5/30 ,  B03B5/34 ,  B03B5/442 ,  B03B9/005 ,  C01G49/06 ,  C01G49/08 ,  C01P2004/52 ,  C01P2004/61 ,  C01P2006/10 ,  Y02P20/129

    摘要： Fine particle coal is beneficiated in specially designed dense medium cyclones to improve particle acceleration and enhance separation efficiency. Raw coal feed is first sized to remove fine coal particles. The coarse fraction is then separated into clean coal, middlings, and refuse. Middlings are comminuted for beneficiation with the fine fraction. The fine fraction is deslimed in a countercurrent cyclone circuit and then separated as multiple fractions of different size specifications in dense medium cyclones. The dense medium contains ultra-fine magnetite particles of a narrow size distribution which aid separation and improves magnetite recovery. Magnetite is recovered from each separated fraction independently, with non-magnetic effluent water from one fraction diluting feed to a smaller-size fraction, and improving both overall coal and magnetite recovery. Magnetite recovery is in specially designed recovery units, based on particle size, with final separation in a rougher-cleaner-scavenger circuit of magnetic drum separators incorporating a high strength rare earth magnet.

    摘要翻译： 精细颗粒煤在特别设计的密集介质旋风分离器中进行选矿，以提高颗粒加速度，提高分离效率。 原煤进料的尺寸首先是去除细煤颗粒。 然后将粗馏分分成干净的煤，中间料和垃圾。 粉碎粉碎以精选细分。 在逆流旋流器回路中将细分馏分离，然后在致密介质旋风分离器中分离成不同大小规格的多个馏分。 致密介质含有窄尺寸分布的超细磁铁矿颗粒，有助于分离并改善磁铁矿的回收。 从独立的每个分离的馏分中回收磁铁矿，使用来自一个馏分的非磁性流出水将进料稀释成较小的馏分，并且改善总体煤和磁铁矿回收率。 在特殊设计的回收单元中，磁铁矿的回收是基于颗粒尺寸，最后分离在包含高强度稀土磁体的磁鼓分离器的粗糙 - 清洁 - 清除 - 清除电路中。

    Coal enhancement process and equipment
    27.
    发明授权
    Coal enhancement process and equipment 失效
    煤炭加工过程和设备

    公开(公告)号：US4579650A

    公开(公告)日：1986-04-01

    申请号：US717200

    申请日：1985-03-28

    申请人： Robert J. Nankee ,  Thomas A. Vivian

    发明人： Robert J. Nankee ,  Thomas A. Vivian

    IPC分类号： B03B5/44 ,  B03B9/00 ,  B03B1/00

    CPC分类号： B03B9/005 ,  B03B5/447

    摘要： A process for enhancing coal by removing the gangue (rock, shale, iron pyrites and the like) associated with the mined coal as it comes from the crushers before further treatment. The process described slurries the crushed run of the mine (ROM) coal with a heavy medium, such as perchloroethylene, for a short period of time at ambient or below temperatures, (i.e. slurry times of 5-30 minutes and temperatures of 90.degree. C. to below -10.degree. C.); thereafter allowing, in a substantially quiescent environment, the solids to settle or float as their inherent densities are greater or lesser respectively than the density of the heavy medium. After settling the float solids (mostly coal of lower sulfur and ash content) are separated from the heavy medium as one stream and the sink solids (mostly the gangue) as a second stream. These solids are each washed with hot (90.degree. C.-100.degree. C.) water and the vapor azeotrope which forms from the water and heavy medium mixture (azeotrope) removed. The now water wet solids are separated from the body of hot water and sent for further processing or loading. The solids, both the coal and the gangue, have a heavy medium content of less than about 400 parts heavy medium per million parts solids.

    摘要翻译： 通过在进一步处理之前从破碎机中除去与开采的煤相关联的g石（岩石，页岩，铁黄铁矿等）来增强煤的方法。 所述方法在环境温度或低于温度下短时间内（例如浆料时间为5-30分钟，温度为90℃）将重金属介质（例如全氯乙烯）的矿砂（ROM​​）煤粉碎 至-10℃以下）; 此后，在基本上静止的环境中，固体沉淀或漂浮，因为它们的固有密度分别大于或小于重介质的密度。 在沉降后，将浮选固体（主要是较低硫和灰分的煤）与重介质作为一个流分离，并将沉积物固体（主要是ang石）作为第二流分离。 将这些固体各自用热（90℃-100℃）水洗涤，并从水和重介质混合物（共沸物）中形成蒸气共沸物。 现在的水湿固体与热水体分开并进行进一步加工或加载。 煤和煤ang石的固体物质的重量介质含量低于每百万份固含量约400份重的介质。

    Process for cleaning undeslimed coal
    28.
    发明授权
    Process for cleaning undeslimed coal 失效
    清洁不排水煤的工艺

    公开(公告)号：US4405453A

    公开(公告)日：1983-09-20

    申请号：US351384

    申请日：1982-02-23

    申请人： Charles H. Wells

    发明人： Charles H. Wells

    IPC分类号： B03B5/34 ,  B03B5/44 ,  B03B9/00 ,  B03B13/00

    CPC分类号： B03B13/005 ,  B03B5/34 ,  B03B5/447 ,  B03B9/005

    摘要： A process for cleaning undeslimed coal includes the steps of determining the scalar value of cross-correlation function of the measured values of the percent magnetics and the bulk specific gravity of a heavy media and coal slurry being fed to a cyclone, comparing the value to a set-point value determined after start-up when the recirculating suspension in the feed slurry is normally clean, and diverting at least a portion of the heavy media suspension that is separated from the underflow of the cyclone from being mixed with the feed coal slurry, to thereby correspondingly reduce the slime content of the feed slurry, and concurrently increasing the flow of cleaner heavy media suspension to the feed coal slurry until the cross-correlation function is brought up to the set-point value. Also disclosed is an embodiment of the process for cleaning coal, wherein the overflow from the cyclone is screened and screened solution is split between a first recycle loop for cleaning the suspension and the heavy media sump. Similarly, the underflow from the cyclone is screened and then split between a separate recycle loop and the heavy media sump. Suspension is diverted to the heavy media sump from one or both recycle cleaning loops as necessary. The remaining portions of the split suspension flows from the two screening devices are, in turn, respectively split between two further sumps and the heavy media sump, with more suspension coming from the cyclone overflow screen when cleaner suspension is indicated as being necessary by the aforesaid statistical analysis.

    摘要翻译： 用于清洁不确定煤的方法包括以下步骤：确定进料到旋流器的重介质和煤浆的百分比磁体的测量值和堆积比重的互相关函数的标量值，将该值与 当进料浆料中的再循环悬浮液通常是清洁的时候在启动之后确定的设定值，并且将与旋风分离器的底流分离的至少一部分重介质悬浮液转向与进料煤浆混合， 从而相应地减少进料浆液的粘液含量，并且同时增加清洁剂重介质悬浮液到原料浆料的流动直到互相关功能达到设定值。 还公开了用于清洁煤的方法的实施例，其中来自旋风分离器的溢流被筛选，筛选的溶液在用于清洁悬浮液的第一循环回路和重介质池之间分开。 类似地，来自旋风分离器的下溢被筛选，然后在单独的循环回路和重介质池之间分离。 根据需要，将悬浮液从一个或两个循环清洁回路转移到重介质池中。 从两个筛选装置流出的分离悬浮液的剩余部分又分别分开在两个另外的沉积池和重介质池之间，当清洁剂悬浮液被指示为上述必要时，更多的悬浮液来自旋风溢流筛 统计分析。

    Method for treatment of heavy media
    30.
    发明授权
    Method for treatment of heavy media 失效
    用于治疗重度媒体的方法

    公开(公告)号：US3638791A

    公开(公告)日：1972-02-01

    申请号：US3638791D

    申请日：1970-04-13

    申请人： INT MINERALS & CHEM CORP

    发明人： HARRISON MARVIN H

    IPC分类号： B03B5/44 ,  B03B9/00

    CPC分类号： B03B5/447

    摘要： In heavy media beneficiation magnetite is rinsed from ore fractions and recovered from rinse liquor by magnetic separators. The efficiency of the magnetic separation step is improved by separating the wash liquor in a hydrocyclone into a first fraction substantially free of ore contaminants and a second fraction containing most of the ore contaminants in the wash liquor. The contaminant-free wash liquor is treated conventionally in magnetic separators and the contaminants are recycled to the rinse screens or other suitable separation device.

    摘要翻译： 在重介质选矿中，磁铁从矿石部分冲洗，并通过磁选机从冲洗液中回收。 通过将水力旋流器中的洗涤液分离成基本上不含矿物污染物的第一级分和在洗涤液中含有大部分矿​​石污染物的第二级分来提高磁选分离步骤的效率。 无污染的洗涤液通常在磁选机中处理，污染物再循环到冲洗筛网或其他合适的分离装置。