高炉原料冶炼反应机理研究  

Research on the Reaction Mechanism of Blast Furnace Raw Material Smelting

作　　者：陈艳 沈志强 时宝来 CHEN Yan;SHEN Zhiqiang;SHI Baolai(Tianjin New Tiangang United Special Steel Co.,Ltd.,Tianjin 301500,China)

机构地区：[1]天津市新天钢联合特钢有限公司,天津301500

出　　处：《山东冶金》2024年第4期30-33,共4页Shandong Metallurgy

摘　　要：在高炉的冶炼过程中,含铁炉料随着温度的升高和还原反应的进行逐渐由固态转变为液态,由于原料成分复杂,其软熔行为不是在一个固定的熔点发生的,而是在一定的温度范围内,实现炉料由固态变软再熔化的过程。因此,含铁炉料的软熔性能需用软熔开始和结束温度以及软熔区间等指标来表达。通过调整入炉原料配比进行综合炉料软熔性能研究,发现烧结矿软熔带宽,滴落温度最高;球团矿软熔带窄,其软化开始温度比烧结矿高,滴落温度比烧结矿低;块矿的软熔区间最窄,软化温度低,滴落温度远低于烧结矿和球团矿。In the smelting process of a blast furnace,the iron containing furnace material gradually changes from solid to liquid with the increase of temperature and the progress of reduction reaction.Due to the complex composition of the raw materials,their soft melting behavior does not occur at a fixed melting point,but within a certain temperature range,the process of melting the furnace material from solid to soft is achieved.Therefore,the soft melting performance of iron containing furnace materials needs to be expressed by indicators such as the starting and ending temperatures of soft melting,as well as the soft melting range.This article conducts a comprehensive study on the soft melting performance of furnace materials by adjusting the proportion of raw materials entering the furnace.It is found that the sintering ore has the highest soft melting bandwidth and dripping temperature.The soft melting zone of pellet ore is narrow,and its softening starting temperature is higher than that of sintered ore,while the dripping temperature is lower than that of sintered ore.The soft melting range of lump ore is the narrowest,with a low softening temperature and a much lower drop temperature than that of sintered ore and pellets.

关 键 词：炉料 熔点 软熔区间 滴落温度 

分 类 号：TF53[冶金工程—钢铁冶金]