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    • 8. 发明申请
    • PRODUCTION OF A MAINLY CARBONATE BONDED ARTICLE BY CARBONATION OF ALKALINE MATERIALS
    • 通过碱性物质的碳化生产主要碳酸盐粘结物品
    • WO2009133120A3
    • 2010-01-07
    • PCT/EP2009055154
    • 2009-04-28
    • CARBSTONE INNOVATION NVQUAGHEBEUR MIEKELAENEN BENNIELSEN PETER
    • QUAGHEBEUR MIEKELAENEN BENNIELSEN PETER
    • C04B40/02C04B18/14C04B28/10
    • C04B28/10C04B40/0231C04B2111/00767Y02P40/18Y02W30/91Y02W30/92Y02W30/94Y02W30/95C04B18/106C04B18/142C04B18/143C04B18/144C04B18/145C04B18/16C04B18/305C04B40/0071C04B40/024
    • A method of producing a mainly carbonate bonded article comprises a step of providing an alkaline granular material comprising one or more alkaline earth metal silicate phases. The method comprises 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 1.10-12cm2. The method also comprises a reacting step arranged to form at least 5% by weight of carbonates (CO-2 3), 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 comprising said 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 vapour pressure of water at said temperature. As a result, at least a portion of said carbonates are formed by reaction of the one or more alkaline earth metal silicate phases. The invention is also related to an article obtained by the method.
    • 一种生产主要碳酸盐结合制品的方法包括提供包含一种或多种碱土金属硅酸盐相的碱性颗粒材料的步骤。 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至少为1.10-12cm2。 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(CO-2 3)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包含所述二氧化碳的气氛中。 气氛温度至少为70℃,压力至少为0.5MPa。 压力也高于在所述温度下水的饱和蒸气压。 结果,所述碳酸酯的至少一部分由一种或多种碱土金属硅酸盐相的反应形成。 本发明还涉及通过该方法获得的物品。