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近几年宣钢烧结矿返矿率一直高于行业平均水平,造成烧结能耗和加工成本的增加。为降低返矿率,公司采取改善烧结矿原料质量、优化原料结构、加强成品筛分及高炉槽下筛分管理、提高料层厚度、增加压料装置、返矿回用炼钢等一系列攻关措施,不到半年的时间使烧结矿返矿率降低至12.8%,降低了3.64个百分点,达到了预期的攻关目标。
In recent years Xuanhua sinter ore recycling rate has been higher than the industry average, resulting in increased sintering energy consumption and processing costs. In order to reduce the rate of return of ore, the Company adopted a series of measures to improve the quality of sinter raw materials, optimize the structure of raw materials, strengthen screening of finished products, screening management under blast furnace trough, increase material thickness, increase pressure feeding device, Measures, less than half a year to reduce the rate of return of sinter ore to 12.8%, a decrease of 3.64 percentage points, to achieve the desired goal.