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    Activitation of natural pozzolans
    3.
    发明授权
    Activitation of natural pozzolans 有权

    公开(公告)号：US11655186B2

    公开(公告)日：2023-05-23

    申请号：US16241994

    申请日：2019-01-08

    Applicant: ROMAN CEMENT, LLC

    Inventor： John M. Guynn

    IPC: C04B7/00 ,  C04B7/13 ,  C04B7/02 ,  C04B7/147 ,  C04B7/26 ,  C04B7/28 ,  C04B7/34 ,  C04B28/00 ,  C04B32/00 ,  C04B14/00 ,  C04B18/06

    CPC classification number: C04B7/13 ,  C04B7/02 ,  C04B7/147 ,  C04B7/26 ,  C04B7/28 ,  C04B2201/50

    Abstract: An activated pozzolan composition includes a fine interground particulate blend of an initially unactivated natural pozzolan and a supplementary cementitious material (SCM) different than the initially unactivated natural pozzolan. The initially unactivated natural pozzolan may include volcanic ash or other natural pozzolanic deposit having a moisture content of at least 3%, and the activated pozzolan composition can have a moisture content less than 0.5% The initially unactivated natural pozzolan may have a particle size less than 1 mm before intergrinding with the SCM. The SCM used to activate the initially unactivated natural pozzolan can be initially coarse or granular with a size greater than 1-3 μm and may include granulated blast furnace slag, steel slag, other metallurgical slag, pumice, limestone, fine aggregate, shale, tuff, trass, geologic material, waste glass, glass shards, basalt, sinters, ceramics, recycled bricks, recycled concrete, refractory materials, other waste industrial products, sand, or natural mineral.

    PROCESS FOR CALCINING BLENDING MATERIAL WITH HIGH ACTIVITY BY FEEDING OUTSIDE KILN HEAD AND APPARATUS THEREOF
    5.
    发明申请
    PROCESS FOR CALCINING BLENDING MATERIAL WITH HIGH ACTIVITY BY FEEDING OUTSIDE KILN HEAD AND APPARATUS THEREOF 有权
    通过送入外部的头部来计算具有高活性的混合材料的方法及其装置

    公开(公告)号：US20140318420A1

    公开(公告)日：2014-10-30

    申请号：US14360874

    申请日：2012-05-22

    Applicant: Zhengliang Qi

    Inventor： Zhengliang Qi

    IPC: C04B7/43 ,  C04B7/30 ,  C04B7/24 ,  C04B7/28

    CPC classification number: C04B7/43 ,  C04B7/24 ,  C04B7/28 ,  C04B7/30 ,  C04B7/4407 ,  F27B7/33 ,  F27B7/383 ,  F27D15/0213 ,  Y02P40/145

    Abstract: Disclosed is a process for calcining active blending material involving feeding material outside of a kiln head and the blending material obtained. The process comprises feeding material from outside of kiln head of rotary kiln into inside of kiln hood and to grate cooler, wherein the material is coal gangue, shale, clay, peat, mud and the like which can form active cement component through low temperature calcining, and calcining the material at low temperature. Disclosed also is a cement production apparatus for carrying out the process provided, comprising feeder nose(s) provided on the kiln hood and/or grate cooler for feeding the material.

    Abstract translation: 公开了一种用于煅烧包括在窑头外部进料的活性掺合材料和所获得的共混材料的方法。 该方法包括将回转窑窑头外部的材料进料到窑罩内部，并将炉篦冷却器进料，其中该材料为煤ang石，页岩，粘土，泥炭，泥浆等，可通过低温煅烧形成活性水泥成分 ，并在低温下煅烧材料。 还公开了一种用于执行所述方法的水泥生产设备，其包括设置在窑罩上的进料器鼻和/或用于进料材料的格栅冷却器。

    Cement admixture and cement composition
    7.
    发明授权
    Cement admixture and cement composition 有权
    水泥外加剂和水泥组成

    公开(公告)号：US08663384B2

    公开(公告)日：2014-03-04

    申请号：US13991524

    申请日：2011-10-24

    Applicant: Takayuki Higuchi ,  Tsutomu Kida ,  Ryoetsu Yoshino

    Inventor： Takayuki Higuchi ,  Tsutomu Kida ,  Ryoetsu Yoshino

    IPC: C04B22/14 ,  C04B28/16

    CPC classification number: C04B7/28 ,  C04B28/02 ,  C04B28/04 ,  C04B40/0039 ,  C04B2111/00025 ,  Y02W30/92 ,  C04B7/02 ,  C04B22/008 ,  C04B22/064 ,  C04B22/142 ,  C04B22/143 ,  C04B2103/58 ,  C04B18/105 ,  C04B14/06 ,  C04B14/28

    Abstract: The invention provides a cement admixture that improves the ability of concrete to bring about high initial strength, works in favor of enhancing the effect on hexavalent chromium reductions, and is less likely to decrease in the effect on hexavalent chromium reductions even upon storage as well as a method for reducing hexavalent chromium. The invention is embodied as (1) A cement admixture, characterized by comprising an expanding material containing free lime, a hydraulic compound and calcium sulfate anhydrite, and a tin sulfate-containing substance; (2) The cement admixture according to (1), characterized in that the tin sulfate-containing substance is contained in an amount of 0.2 to 8 parts by mass—as calculated on a tin sulfate basis—in a total of 100 parts by mass of the expanding material and the tin sulfate-containing substance; (3) The cement admixture according to (1) or (2), characterized in that the expanding material has been treated with carbon dioxide gas to form calcium carbonate therein; (4) The cement admixture according to any one of (1) to (3), characterized in that the expanding material has been surface treated with a shrinkage reducer; (5) A cement composition, characterized by containing cement, and the cement admixture according to any one of (1) to (4); and (6) A method for reducing hexavalent chromium, characterized by use of the cement composition according to (5).

    Abstract translation: 本发明提供了一种提高混凝土产生高初始强度的能力的水泥混合物，有利于增加对六价铬​​还原的影响，并且即使在储存时也不太可能降低对六价铬还原的影响，以及 一种降低六价铬的方法。 本发明体现为：（1）一种水泥混合物，其特征在于包含含有游离石灰的膨胀材料，水硬性化合物和无水硫酸钙，以及含硫酸锡物质; （2）根据（1）所述的水泥混合物，其特征在于，所述含硫酸锡物质的含量为0.2〜8质量份（以硫酸锡为基准），总计为100质量份 的膨胀材料和含硫酸锡物质; （3）根据（1）或（2）所述的水泥外加剂，其特征在于，所述膨胀材料已经用二氧化碳气体处理以在其中形成碳酸钙; （4）如（1）〜（3）中任一项所述的水泥外加剂，其特征在于，所述膨胀材料用减缩剂进行表面处理; （5）一种水泥组合物，其特征在于含有水泥，和（1）〜（4）中任一项所述的水泥混合物; （6）一种减少六价铬的方法，其特征在于使用（5）所述的水泥组合物。

    NARROW PSD HYDRAULIC CEMENT, CEMENT-SCM BLENDS, AND METHODS FOR MAKING SAME
    9.
    发明申请
    NARROW PSD HYDRAULIC CEMENT, CEMENT-SCM BLENDS, AND METHODS FOR MAKING SAME 有权
    NARROW PSD液压水泥，水泥水泥混合物及其制造方法

    公开(公告)号：US20120085263A1

    公开(公告)日：2012-04-12

    申请号：US13315089

    申请日：2011-12-08

    Applicant: John M. Guynn ,  Andrew S. Hansen

    Inventor： John M. Guynn ,  Andrew S. Hansen

    IPC: C04B28/26 ,  C04B28/06

    CPC classification number: C04B14/06 ,  B02C21/00 ,  B02C23/12 ,  B02C23/14 ,  C04B2/02 ,  C04B7/26 ,  C04B7/28 ,  C04B7/527 ,  C04B28/04 ,  C04B38/00 ,  C09K8/46 ,  Y02P40/18 ,  Y02P40/20 ,  Y02W30/92 ,  C04B14/106 ,  C04B14/185 ,  C04B14/22 ,  C04B14/28 ,  C04B18/06 ,  C04B2103/0088

    Abstract: Hydraulic cements, such as Portland cements and other cements that include substantial quantities of tricalcium silicate (C3S), dicalcium silicate (C2S), tricalcium aluminate (C3A), and/or tetracalcalcium alumino-ferrite (C4AF), are particle size optimized to have increased reactivity compared to cements of similar chemistry and/or decreased water demand compared to cements of similar fineness. Increasing hydraulic cement reactivity increases early strength development and release of reactive calcium hydroxide, both of which enhance SCM replacement and 1-28 day strengths compared to blends of conventional Portland cement and one or more SCMs, such as coal ash, slag or natural pozzolan. Decreasing the water demand can improve strength by decreasing the water-to-cement ratio for a given workability. The narrow PSD cements are well suited for making blended cements, including binary, ternary and quaternary blends.

    Abstract translation: 包括大量硅酸三钙（C3S），硅酸二钙（C2S），铝酸三钙（C3A）和/或四钙铝铁氧体（C4AF）等水泥水泥，其中包括大量硅酸钙 与类似化学物质的水泥相比，和相似细度的水泥相比，反应性增加。 与常规波特兰水泥与一种或多种SCM（如煤灰，矿渣或天然火山灰）的混合物相比，增加水硬性水泥反应性增加了反应性氢氧化钙的早期强度开发和释放，两者都增强了SCM替代和1-28天的强度。 降低用水需求可以通过降低给定可加工性的水与水泥比来提高强度。 窄PSD水泥非常适合制作混合水泥，包括二元，三元和四元混合。

    COAL ASH TREATMENT METHOD AND APPARATUS
    10.
    发明申请
    COAL ASH TREATMENT METHOD AND APPARATUS 有权
    煤灰处理方法和装置

    公开(公告)号：US20100095872A1

    公开(公告)日：2010-04-22

    申请号：US12517071

    申请日：2007-11-30

    Applicant: Tomomichi Nakamura ,  Hisashi Kondo ,  Shinichiro Saito

    Inventor： Tomomichi Nakamura ,  Hisashi Kondo ,  Shinichiro Saito

    IPC: C04B7/38 ,  C04B7/44 ,  B07C99/00

    CPC classification number: C04B7/364 ,  B03B9/04 ,  C04B7/28 ,  C04B7/38 ,  C04B7/4423 ,  F27B7/20 ,  Y02P40/126 ,  Y02P40/145

    Abstract: To effectively utilize coal ash while reducing mercury concentration in cement kiln exhaust gas. Coal ash is received from a thermal power plant or the like; the received coal ash is separated into ash and unburned carbon; the separated ash is utilized in a cement manufacturing facility as a cement raw material; and the separated unburned carbon is utilized in the cement manufacturing facility in accordance with mercury concentration in gas exhausted from a cement kiln of the cement manufacturing facility. In case that the mercury concentration in the gas exhausted from the cement kiln of the cement manufacturing facility is high, in the coal ash, unburned carbon with high mercury content can be treated in facilities other than the cement manufacturing facility without feeding the unburned carbon to the cement manufacturing facility, or the quantity of such unburned carbon fed to the cement manufacturing facility can be adjusted. It is possible to separate mercury from the separated unburned carbon, and utilize the unburned carbon from which mercury is separated in the cement manufacturing facility as a fuel.

    Abstract translation: 有效利用煤灰，同时降低水泥窑废气中的汞浓度。 从火力发电厂等接收煤灰; 接收的煤灰分为灰分和未燃碳; 分离的灰分用作水泥制造设备中的水泥原料; 并且分离的未燃碳根据水泥制造设备的水泥窑排出的气体中的汞浓度在水泥制造设施中使用。 在从水泥制造设备的水泥窑排出的气体中的汞浓度高的情况下，在煤灰中，可以在水泥制造设备以外的设施中处理高含汞量的未燃烧碳，而不将未燃碳 可以调整水泥制造设备，或者供给到水泥制造设备的未燃烧碳的量。 可以将汞从分离的未燃烧碳中分离出来，并利用在水泥制造设备中分离汞的未燃烧碳作为燃料。

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