HISMELT SRV环境下刚玉尖晶石材料抗侵蚀性能研究

Study on Erosion Resistance of Corundum-spinel Materials in HISMELT SRV Environment

对刚玉尖晶石制品抗HISMELT SRV渣侵蚀行为进行研究。结果表明:当基质中刚玉以5μm形态存在、镁铝尖晶石以1~2μm形态填充刚玉晶相时,刚玉尖晶石砖1^(#)以镁铝尖晶石为抗侵蚀主要物相,其侵蚀层中以铁镁铝尖晶石、钙铝黄长石为主要新生成晶相,渗透层以霞石为新生成物相。当基质中镁铝尖晶石以5~10μm形态存在,刚玉以2~4μm形态填充尖晶石晶相之间时,刚玉尖晶石砖2^(#)以刚玉相为抗SRV渣侵蚀主要物相,其渣层及侵蚀层均以二氧化铝钙、透辉石为主要新生成物相。试验证明,铁镁铝尖晶石的形成抑制了氧化铁的侵蚀,钙铝黄长石、霞石的形成抵抗了CaO与SiO_(2)、Na_(2)O的侵蚀。

The resistance of corundum spinel products to HISMELT SRV slag erosion was studied.The results show that when the corundum exists in 5μm form in the matrix and the magnesia spinel is filled with corundum crystal phase in 1-2μm form,magnesia spinel is the main anti-erosion phase in the corundum spinel brick 1#,ferromagnesia spinel and calcium-aluminite are the main new crystalline phase in the erosion layer,and nepheline is the new product phase in the permeability layer.When magnesia spinel exists 5-10 μm in matrix and corundum fills spinel with 2-4μm in crystalline phase,corundum spinel brick 2^(#) is mainly composed of corundum phase,and calcium dialumina and diopside are the main new products in slag layer and erosion layer.The experimental results show that the formation of ferromagnesia spinel inhibits the erosion of ferric oxide,and the formation of calcium aluminite plagioclase and nepheline resist the erosion of CaO,SiO_(2) and Na_(2)O.