一、概述我厂第一冶炼厂二车间有四台12500kVA 硅铁电炉。自1977年4月开始相继投产以来,因炉衬结构不合理,造成寿命短,先后进行了两次大的改造。改焙烧炭块为近年来广泛应用在高炉、电石炉上的自焙炭砖;后又改焙烧炭砖为自焙炭砖、轻质炭砖结合型炉衬,并在筑炉工艺上进行了改进。现将两次改造情况与使用效果介绍如下。 First, an overview of the first plant I plant two smelters have four 12500kVA ferrosilicon furnace. Since April 1977 has been put into operation, due to irrational lining structure, resulting in short life expectancy, has carried out two major transformation. Roasting carbon block is widely used in blast furnace and calcium carbide furnace in recent years, self-baking charcoal brick; later changed to roasting charcoal brick self-baking charcoal brick, light charcoal brick combined with lining, and in the furnace construction process was improved . Now the situation and the use of two changes introduced below.