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为了应对低价低品质铁矿石原料使用比例增加,入炉料中Al2O3含量上升,导致炼铁炉渣粘度升高,影响炉况顺行的问题,三安公司采取在混匀矿中配入2%～2.5%的菱镁石,将烧结矿MgO含量提高到2%左右,有效解决了炉渣粘度过高的问题,使炼铁成本得到了控制。但实践也表明,配加菱镁石对烧结生产指标有一定负面影响,因此,其配加量应适当控制。
In order to cope with the increase in the proportion of low-cost and low-quality iron ore raw materials, the content of Al2O3 in the charge increases, which leads to the increase of the viscosity of the iron making slag and the problem of the furnace running smoothly. San’an Company adopts 2% -2.5 % Of the magnesite, the sinter content of MgO increased to about 2%, effectively solve the problem of excessive viscosity of the slag, so that ironmaking costs have been controlled. However, practice also shows that with magnesite on the sintering production indicators have a certain negative impact, therefore, with the amount should be properly controlled.