玻璃窑蓄热室用镁锆砖侵蚀机理分析  

Corrosion mechanism analysis on magnesia- zirconia brick for glass furnace regenerator

作　　者：王健东 常江 高心魁 

机构地区：[1]辽宁青花耐火材料研究院,辽宁营口115100

出　　处：《中国玻璃》2009年第6期7-10,共4页China Glass

摘　　要：镁锆砖已广泛应用于玻璃窑蓄热室格子体上层和窑墙上部，通过对某公司蓄热室使用后残砖的侵蚀机理分析得出：镁锆砖所受到的侵蚀介质为SiO2、SO3、Na2O、P2O5K2O，在其基质处反应生成的硅酸盐、硫酸盐和磷酸盐，降低了基质的结合强度，从而导致砖体强度的降低；同时进入气孔的侵蚀介质在气孔中生成的产物也能够起到堵塞气孔，降低砖体的气孔率，增大其致密度作用。然而侵蚀介质的侵入对砖体的损害是主要的。Magnesia - zirconia brick has been applied in upper parts of checker brickwork and furnace wall, therefore, by analyzing corrosion mechanism of remaining brick after using, we obtain： corrosion mediums of magnesia - zirconia brick are SiO2, SO3, Na2O, P2O5 and K2O. Therefore, silicate, sulfate and phosphate are produced, so as to reduce the combining strength of the substrate, so the brickwork strength is lowered. At the same time, products of corrosion mediums in air holes can also block the air holes, so as to lower the porosity of brickwork and increase density effect. However, the damage of corrosion mediums to brickwork is principal.

关 键 词：蓄热室 镁锆砖 侵蚀机理 分析 

分 类 号：TQ175.713[化学工程—硅酸盐工业] TQ171.623