Production of a mainly carbonate bonded article by carbonation of alkaline materials
    4.
    发明授权
    Production of a mainly carbonate bonded article by carbonation of alkaline materials 有权
    通过碱性材料的碳酸化生产主要为碳酸盐的粘结制品

    公开(公告)号:US08709151B2

    公开(公告)日:2014-04-29

    申请号:US12989932

    申请日:2009-04-28

    IPC分类号: C04B14/28

    摘要: A method of producing a mainly carbonate bonded article includes a step of providing an alkaline granular material having one or more alkaline earth metal silicate phases. The method includes a step of compacting the granular material to obtain a compact of the granular material. The porosity of the compact is smaller than or equal to 37% by volume. The intrinsic permeability of the compact is at least 1·10−12 cm2. The method also includes a reacting step arranged to form at least 5% by weight of carbonates (CO32−), by reacting the granular material with carbon dioxide in the presence of water, thus transforming the compact into the article. In the reacting step, the compact, being unsaturated with moisture at the beginning of the reacting step, is brought in an atmosphere having carbon dioxide. The atmosphere is at a temperature of at least 70° C. and at a pressure of at least 0.5 MPa. The pressure is also higher than the saturated vapor pressure of water at the temperature. As a result, at least a portion of the carbonates are formed by reaction of the one or more alkaline earth metal silicate phases. Articles are also obtained by the method.

    摘要翻译: 主要生产碳酸盐结合物的方法包括提供具有一种或多种碱土金属硅酸盐相的碱性粒状材料的步骤。 该方法包括压实颗粒材料以获得颗粒状材料的压块的步骤。 压坯的孔隙率小于或等于37体积%。 压实体的固有磁导率为至少1×10-12 cm 2。 该方法还包括通过在水存在下使颗粒状物质与二氧化碳反应而形成至少5重量%的碳酸酯(CO32-)的反应步骤,从而将压实物转化成制品。 在反应步骤中,将在反应步骤开始时与水分不饱和的成型体置于具有二氧化碳的气氛中。 气氛温度至少为70℃,压力至少为0.5MPa。 压力也高于在该温度下水的饱和蒸气压。 结果,至少一部分碳酸盐由一种或多种碱土金属硅酸盐相的反应形成。 文章也通过该方法获得。

    Heavy weight concrete composition using slag byproducts
    5.
    发明授权
    Heavy weight concrete composition using slag byproducts 有权
    重质混凝土组合物使用渣副产物

    公开(公告)号:US08221541B2

    公开(公告)日:2012-07-17

    申请号:US13389440

    申请日:2010-09-30

    IPC分类号: C04B18/14 C04B24/06 E01B3/28

    摘要: Disclosed is a heavyweight concrete composition using slag byproducts, including: ground granulated blast furnace slag; slow-cooled electric-arc-furnace oxidizing slag or atomized steel slag used as a fine aggregate; a coarse aggregate; water; and a chemical admixture based on 100 parts by weight high-early-strength cement. Thus, the heavyweight concrete composition contains a large quantity of steel slag and blast-furnace slag that are byproducts in iron-making and steel-making processes, thereby remarkably reducing an amount of emission of carbon dioxide and maximizing the recycling of waste resources for preserving the natural environment. As a result, an eco-friendly heavyweight concrete product can be made.

    摘要翻译: 公开了一种使用渣副产物的重质混凝土组合物,包括:磨碎的高炉渣; 用作细骨料的慢冷电弧炉氧化炉渣或雾化钢渣; 粗骨料 水; 和基于100重量份的高强度水泥的化学混合物。 因此,重型混凝土组合物含有大量的炼钢和炼钢工艺中的副产品钢渣和高炉渣,从而显着减少二氧化碳的排放量,并最大限度地利用废弃物资源进行回收利用 自然环境。 因此,可以制造出环保的重型混凝土产品。

    Process for Producing a Granular Material
    6.
    发明申请
    Process for Producing a Granular Material 有权
    生产颗粒材料的方法

    公开(公告)号:US20110017101A1

    公开(公告)日:2011-01-27

    申请号:US12812912

    申请日:2009-01-15

    IPC分类号: C04B7/19 C04B14/04 C09C1/62

    摘要: The present invention relates to a process for producing a granular material 26 for mixing with at least a hydraulic binding agent and with water to produce mortar or concrete. This process comprises at least an aggregation step and a carbonation step. In the aggregation step, steel slag particles from at least a fine fraction 24 of steel slag, in particular a fine fraction of steel slag containing a significant amount of γ-dicalcium silicate, are aggregated into larger grains so as to form a coarser granular material 25. In the carbonation step, said aggregated particles in said coarser granular material 25 are carbonated by means of carbon dioxide so as to produce a carbonated granular material 26. The present invention also relates to a carbonated granular material of aggregated steel slag particles containing a significant amount of γ-dicalcium silicate, in particular at least 3 wt. %, preferably at least 5 wt. % and more preferably at least 7 wt. %, and bound within each grain by a solid matrix containing at least calcium and/or magnesium carbonates.

    摘要翻译: 本发明涉及一种用于与至少水硬性粘合剂和水混合以制造砂浆或混凝土的颗粒材料26的制备方法。 该方法至少包括聚集步骤和碳酸化步骤。 在聚集步骤中,来自钢渣的至少细小部分24的钢渣颗粒,特别是含有大量γ-硅酸二钙的钢渣的细小部分被聚集成较大的颗粒,以形成较粗的颗粒材料 在碳酸化步骤中,所述较粗粒状材料25中的所述凝集颗粒通过二氧化碳进行碳酸化,以生产碳酸化颗粒材料26.本发明还涉及一种含有 显着量的γ-二硅酸钙,特别是至少3wt。 %,优选至少5wt。 %,更优选至少7wt。 %,并且通过含有至少钙和/或碳酸镁的固体基质在每个晶粒内结合。

    Mixture of raw materials for the production of a cement clinker, a cement clinker and a cement
    7.
    发明申请
    Mixture of raw materials for the production of a cement clinker, a cement clinker and a cement 审中-公开
    用于生产水泥熟料,水泥熟料和水泥的原料混合物

    公开(公告)号:US20070006778A1

    公开(公告)日:2007-01-11

    申请号:US11481651

    申请日:2006-07-06

    IPC分类号: C04B28/08 C04B18/18

    摘要: A main component of cement is cement clinker, which is produced from a mixture of raw materials containing calcium oxide, silicon dioxide, aluminium oxide and iron oxide by means of mixing, grinding and burning. According to the invention, the mixture of raw materials consists of a calcareous component and converter slag, the converter slag being added in a proportion of up to 30% by weight. Natural resources of raw materials can hereby be preserved and the carbon dioxide output during burning of the cement clinker can be reduced.

    摘要翻译: 水泥的主要成分是水泥熟料,它是通过混合,研磨和燃烧由含氧化钙,二氧化硅,氧化铝和氧化铁的原料混合而成的。 根据本发明,原料混合物由钙质成分和转炉渣组成,转化炉渣的添加量高达30%(重量)。 因此可以保留原料的自然资源,降低水泥熟料燃烧过程中的二氧化碳排放。

    Process for the conversion of iron bearing residues into a synthetic rock
    10.
    发明授权
    Process for the conversion of iron bearing residues into a synthetic rock 失效
    将含铁残留物转化为合成岩石的方法

    公开(公告)号:US06284038B1

    公开(公告)日:2001-09-04

    申请号:US09147944

    申请日:1999-03-24

    IPC分类号: C04B1814

    摘要: A process for the conversion of iron bearing residues from the non-ferrous process industry into a synthetic rock, comprising the following steps: 1 part of the wet residue is mixed with at least 0.1 parts by weight of crushed blast furnace slags and with at least 0.1 parts by weight of crushed converter slags; water is added to the mixture to obtain a stiff paste; and the paste is allowed to harden, while kept wet, to such an extent that the resulting rock is usable for construction purposes.

    摘要翻译: 将含铁残留物从有色金属工业工业转化为合成岩石的方法,包括以下步骤:将1份湿残渣与至少0.1重量份的粉碎的高炉炉渣混合,并至少与 0.1重量份粉碎的转炉炉渣; 向混合物中加入水,得到硬糊状物; 并且允许糊剂在保持湿润的同时硬化至使所得岩石可用于建筑目的的程度。