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    • 3. 发明授权
    • High iron oxide hydraulic cement
    • 高氧化铁水硬性水泥
    • US4036657A
    • 1977-07-19
    • US598411
    • 1975-07-23
    • Povindar K. Mehta
    • Povindar K. Mehta
    • C04B7/22C04B7/02C04B7/04
    • C04B7/22
    • Hydraulic cements having higher (about 5%) iron-oxide content and lower (43-57%) than the usual calcium-oxide content of Portland cements are disclosed. These high iron-oxide cements have normal setting times, but high early strengths that develop without resorting to fine grinding or steam curing. The cements can be produced with considerably less expenditure of energy than required for conventional Portland cements due to lower burning temperatures and reduction in the amount of calcium-oxide which requires the greatest energy input for preparation of the cements.
    • 披露了比普通硅酸盐水泥的通常氧化钙含量高(约5%)和较低(43-57%)的水硬水泥。 这些高铁氧化物水泥具有正常凝固时间,但是在不采用细磨或蒸汽固化的情况下发展的高的早期强度。 由于较低的燃烧温度和较少的氧化钙需要最大的能量投入来制备水泥,所以能够生产比常规硅酸盐水泥要少得多的能量消耗的水泥。