我厂系采用400瓩圆形电阻电弧炉处理锡精矿。1962年以来,我们曾先后对电炉炼锡的操作技术条件进行了生产性试验。到1963年底,稳定了电炉炼锡的作业条件,指标也较理想;但炉底寿命短,不到三个月。1964年以来,在不断总结经验,采取措施的情况下,炉底寿命可达半年以上,其他生产指标,如 Our factory uses 400 瓩 circular resistance electric arc furnace for the treatment of tin concentrate. Since 1962, we have carried out productive tests on operating technical conditions of electric furnace smelting. By the end of 1963, the working conditions of electric furnace smelting were stabilized, and the indicators were also satisfactory. However, the furnace bottom had a short life span of less than three months. Since 1964, under the circumstance of constantly summing up experience and taking measures, the life of the hearth can reach more than six months. Other indicators of production, such as