摘要
提高LF炉渣线部位MgO-C砖使用寿命的关键在于防止LF渣粉化并在MgO-C砖表面形成挂渣层。本试验采用静态坩埚法研究了含B_2O_3的防氧化涂料对MgO-C砖抗LF粉化渣侵蚀的影响,并与未喷涂防氧化涂料的MgO-C砖进行了对比试验。结果表明:防氧化涂料中的部分B_2O_3溶入渣中,增加了渣的粘度,并与渣中的α’-C_2S形成固溶体,有效地抑制了LF渣的粉化,并在MgO-C砖上形成挂渣保护层,因而提高了LF炉渣线部位MgO-C砖的抗LF粉化渣侵蚀的能力。
The key to improve service life of MgO -C brick for slag line of LF furnace is to prevent LF slag from becoming powder and to form a protecting layer covered with LF slag for the brick. The test studied the effect of B2O3-containing anti-oxidation coating on erosion resistance of MgO -C bricks to LF dusty slag by using static crucible method,and the comparison test was also made with MgO -C bricks without spraying antioxidation coating. The results show that the erosion resistance of MgO -C brick is improved because.1） B2O3 of anti-oxidation coating dissolves into LF slag resulting in the increase of viscosity of LF slag ;2）partial B2O3 can form solid solution with α＇-C2S of LF slag which effectively restrains LF slag becoming powder,and also it helps forming a protecting layer covered with LF slag for the brick.
出处
《耐火材料》
EI
CAS
北大核心
2005年第6期408-410,共3页
Refractories
