“精料”是高炉高产、优质、低耗的物质基础,也是高炉强化冶炼的必要条件。“精料”的方向是“高、熟、净、小、匀、稳”。在众多的精料内容中,提高炉料的品位是高炉节焦增铁的首要任务,提高炉料品位是改善高炉技术经济指标最有效的措施, “Fine material ” is the material basis of high yield, high quality and low consumption of blast furnace, and is also the necessary condition for blast furnace strengthening smelting. “Concentrate ” direction is “high, cooked, net, small, uniform, stable ”. Among a large number of concentrate content, improving the quality of charge is the primary task of blast furnace section coke iron, raising the charge grade is to improve the technical and economic indicators of blast furnace the most effective measures,