论文部分内容阅读
对峨口磁铁矿配加碳酸铁精矿生产氧化球团进行了研究。研究表明，碳酸铁精矿尽管烧损大，焙烧时收缩严重，但其中含有较高的ＣａＯ、ＭｇＯ等碱性氧化物，对于高炉冶炼极为有利。在碳酸铁精矿配比为５０％，预热温度为８００℃，预热时间为２０～３０ｍｉｎ，焙烧温度为１２７０℃，焙烧时间为２０～３０ｍｉｎ的工艺条件下，可生产出抗压强度大于２０００Ｎ／个，还原率为８６．８５％，ＭｇＯ含量为４．０３％的优质球团矿
Ekoukou magnetite ore with iron oxide concentrate production of iron oxide pellets were studied. The results show that the iron carbonate concentrate, despite its large burning loss and severe shrinkage during roasting, contains high levels of alkaline oxides such as CaO and MgO, which is extremely beneficial for blast furnace smelting. When the proportion of iron carbonate concentrate is 50%, the preheating temperature is 800 ℃, the preheating time is 20 ~ 30min, the calcining temperature is 1270 ℃ and the calcining time is 20 ~ 30min, the compressive strength can be produced more than 2000N / a, the reduction rate of 86.85%, MgO content of 4.03% of the high-quality pellets