钢包内衬的挂渣现象在世界上很多钢厂都可以观测到。在实验室条件下进行了一项研究,即将钢包内衬用耐火砖测试棒浸入到各种不同组分的熔渣里。通过改变渣浸的各种热状态和观察其产生的显微结构来研究内衬挂渣的机理。富含SiO2的渣显示出会产生不连续的刚玉沉淀物,同时在渣浸后依据冷却率会产生另外的沉积--钙长石。观测到了含大量Al2O3的渣中除了在一些区域形成尖晶石和铝酸钙外,很多会形成非常明显的六铝酸钙和双铝酸钙。还研究了增加高铝渣中石灰成分可降低在测试棒上挂渣的质量。 实验结果表明,内衬挂渣可能包含两个过程,即包括在铸造过程中内衬溶解进入渣中而引起材料损失,又包括浇铸后内衬溶解进入到相连的液相层,促使固相形成,而且有助于内衬厚度的增加。 Ladle lining dross phenomenon in many mills in the world can be observed. A study was conducted under laboratory conditions, in which a ladle lining with a refractory brick test rod was dipped into various fractions of slag. The mechanism of lining dross was studied by changing various thermal states of slag dregs and observing their microstructure. Silica rich slag is shown to produce discontinuous corundum precipitates, while additional deposits, called feldspar, are produced depending on the cooling rate after slag immersion. It has been observed that in addition to spinel and calcium aluminate formed in some regions, many of the slag containing a large amount of Al2O3 form a very significant calcium hexaluminate and calcium bisaluminate. It has also been studied to increase the lime content in the high alumina slag to reduce the quality of the dross on the test rod. The experimental results show that the lined slag may contain two processes, including the dissolution of the liner into the slag during the casting process to cause material loss, and the lined lining to dissolve into the connected liquid phase after casting, to promote the solid phase formation , But also to help increase the thickness of the liner.