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    • 63. 发明申请
    • Process and composition for the manufacture of cement expansion additive
    • 用于制造水泥膨胀添加剂的工艺和组成
    • US20050034635A1
    • 2005-02-17
    • US10828222
    • 2004-04-21
    • Pin-Chuan LinPo-Liang Hsu
    • Pin-Chuan LinPo-Liang Hsu
    • C04B7/32C04B22/00C04B7/00
    • C04B7/323C04B22/008Y02P40/145C04B7/24
    • The present invention is related to the process and composition for the manufacture of cement expansion additive. The process comprises a blending step, a reaction step, and a calcination step. The blending step is to incorporate soluble calcium sulfate, soluble calcium oxide, and soluble aluminum compounds such as aluminum dross. The addition of water with the above incorporated materials to from ettringite is so-called reaction step. The calcination step is to calcine the products which are produced from reaction step at a temperature range between 60° C. and 900° C. by transforming ettringite from amorphous to calcium sulfoaluminate respectively. After calcinations, the final products can be used as expansive additives for cement or concrete. Further, this manufacturing method can effectively decrease raw material cost and production cost due to the raw material coming from recycling and no need to calcine at high temperature than other relative arts.
    • 本发明涉及用于制造水泥膨胀添加剂的方法和组合物。 该方法包括共混步骤,反应步骤和煅烧步骤。 混合步骤是掺入可溶性硫酸钙,可溶性氧化钙和可溶性铝化合物如铝渣。 将上述掺入的材料加入到钙矾石中的是所谓的反应步骤。 煅烧步骤是通过将钙矾石分别从无定形转变成硫铝酸钙,分别在60℃至900℃的温度范围内煅烧由反应步骤产生的产物。 煅烧后,最终产品可用作水泥或混凝土的膨胀添加剂。 此外,该制造方法可以有效地降低由于来自再循环的原料而导致的原材料成本和生产成本,并且在高温下不需要煅烧比其他相关技术。