Anti-hydration Magnesia-spinel Bricks in Cement Industry

Hydration cracks of magnesia-spinel bricks in cement industry have been serious problems for both refractory producers and refractory users for a long time.When magnesia-spinel bricks are kept for more than 6months,the bricks tend to have reaction with water or moisture and result in cracks and loss on their structural strength. Those bricks cannot be used anymore and cause substantial loss for the related parties. In 2013,the Siam Refractory Industry Co.,Ltd.,Thailand,successfully developed and applied a special nano-technology to create ＂Anti-Hydration Magnesia-Spinel Bricks ＂ for cement industry which can have the storage time more than two years even in high humidity areas. The cement producers can ensure that all bricks still have good properties as the new ones.

一种水化镁铝尖晶石砖的应用探索

水泥窑用镁铝尖晶石砖长期存放会水化开裂,目前尚无经济有效的处理方法。本研究参照了医药行业用“包衣”工艺,水化镁铝尖晶石砖经过轻烧、破碎、包衣、烘干、烧成制备成方镁石-尖晶石复合材料,并将其作为镁砖增韧材料替代传统的镁铝尖晶石制备了镁铝尖晶石砖。将制备的镁铝尖晶石砖与传统镁铝尖晶石砖的性能进行对比,发现该镁铝尖晶石砖除了体积密度降低外,两者的荷重软化温度、热震稳定性、耐压强度都相当,可替代传统镁铝尖晶石砖应用于水泥窑中。该研究为水化镁铝尖晶石砖的应用提供了一条途径。