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包头白云鄂博铁精矿含氟和钾钠较高,开始生产自熔性烧结矿时,因强度差,粉末多,给高炉冶炼带来许多问题。一九七六年采用高碱度烧结工艺后,烧结矿的强度,还原性有了明显的改善。但与一般烧结矿相比,软化温度仍低近100℃,熔化温度低110—140℃。且近几年来,由于精矿变化等原因,烧结矿还原粉化较为严重。加之,含氟炉渣具有典型的短渣性质,以及碱金属氧化物K_2O、Na_2O的影响,促使高炉易于结(?)。在选矿工艺还没有把这
Baotou Bayan Obo iron concentrate containing higher fluoride and potassium sodium, the production of self-fluxing sinter, due to poor strength, more powder, blast furnace smelting to bring many problems. After using the high alkalinity sintering process in 1976, the intensity and reducing property of sinter have been significantly improved. But compared with the general sinter, the softening temperature is still low near 100 ℃, the melting temperature is low 110-140 ℃. And in recent years, due to changes in the concentrate and other reasons, sinter reduction powder is more serious. In addition, the typical properties of short slag, as well as the influence of alkali oxides K_2O and Na_2O, make the blast furnace easy to knot (?). In the dressing process has not put this