1优化铁精矿品位的必要性和意义合理提高铁精矿品位，可以相应地提高烧结矿（或球团矿）的品位，从而影响高炉冶炼。在炼铁行业有个大致的说法：火炉品位每提高10％，可降低焦比约2％，提高高炉利用系数约3％，因而提高冶炼的效益。70年代末，当时少数矿山的铁精矿品位可高达68 1 The necessity and significance of optimizing the grade of iron concentrate Reasonably raising the grade of iron concentrate can improve the grade of sinter (or pellet) accordingly and affect blast furnace smelting. There is a general statement in the iron-making industry that for every 10% increase in the grade of the stove, the coke ration can be reduced by about 2% and the utilization factor of the blast furnace can be increased by about 3%, thus improving the smelting efficiency. At the end of the 1970s, iron ore concentrates of a few mines were at the grade of 68