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1.发明申请公开(公告)号：US20080003174A1
公开(公告)日：2008-01-03
申请号：US11786220
申请日：2007-04-11
申请人： Miriam Elena Andara Giannotti , Jose R. Rus Romero , Carlos Dipasquale Torres , Morvin Ascanio Lopez , Jose Oropeza , Juan Carlos Suarez
发明人： Miriam Elena Andara Giannotti , Jose R. Rus Romero , Carlos Dipasquale Torres , Morvin Ascanio Lopez , Jose Oropeza , Juan Carlos Suarez
CPC分类号： C04B11/26 , C01F11/46 , C01P2004/50 , C04B7/424 , C04B11/005 , C04B18/02 , C04B22/144 , C04B28/143 , C04B2103/22 , C22B1/2406 , C04B20/02 , C04B20/023
摘要： The present invention concerns the application of a novel process for the physical and chemical conditioning of chemical gypsum or phospho gypsum, derived from the production of phosphoric acid, and its use as a retarding agent in the setting of Portland type cements or in the preparation of other construction materials. This conditioning is based on solid-state reactions or reactions in the presence of small amounts of water, between phospho gypsum and agglutinating-neutralizing agents, principally through the application of oxy and hydroxy compounds, without discounting use of the respective carbonates of magnesium, aluminum and principally calcium, in addition to mixtures of these, and the subsequent preparation of self-hardening pellets which facilitate transport and handling.The technological process associated with the invention notably simplifies the number and type of individual operations, and the preparation of pellets from mixtures of phospho gypsum, in addition to reducing energy costs by operating at low temperatures (150° C.) during short periods (1-2 hours), reducing the quantity of neutralizing agents, and also minimizing the volume of water required for the process.
摘要翻译： 本发明涉及用于磷酸生产衍生的化学石膏或磷酸石膏的物理和化学调理的新方法及其在波特兰型水泥中的制备中作为阻滞剂的用途。 其他建筑材料。 这种调理是基于在少量水存在下的固态反应或磷酸石膏与凝集中和剂之间的反应，主要是通过施用氧基和羟基化合物，而不折扣使用镁，铝的各自的碳酸盐 并且主要是除了这些的混合物之外的钙，以及随后的便于运输和处理的自硬化颗粒的制备。 与本发明相关的技术过程显着简化了单个操作的数量和类型，以及从磷石膏混合物制备颗粒，另外还可以在短时间内在低温（150℃）下操作来降低能量成本（1 -2小时），减少中和剂的量，并且还使过程所需的水的体积最小化。
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