第一重型机器厂废钢分类和返回法炼钢项目,自1982年开始试点以来,在备料分厂、炼钢分厂等单位的努力下,已取得了一定的成绩。该厂废钢(屑)分类率目前已达到74.8%,7年来共节电109.3×10~4kW·h,节约锰、铬、 The first heavy machinery plant scrap classification and return method steelmaking project, since the trial started in 1982, in preparation of materials factory, steel factory and other units of the efforts, has made some achievements. The plant scrap (crumbs) classification rate has now reached 74.8%, seven years a total of 109.3 × 10 ~ 4kW · h, saving manganese, chromium,