Influence of preheating lump ore on blast furnace smelting energy saving and consumption reduction

Abstract

The ironmaking process often produces a certain amount of waste heat and pressure, the use of this surplus energy to preheat the lump ore is a commonly used process, but the quality of each process of the material, or the stability of production, the performance optimisation of the lump ore after treatment, there are certain defects, based on practice, through the use of rotary kiln to preheat the lump ore gradually becomes a green environmental protection process measure, the application of the rotary kiln, makes the efficient utilisation of the lump ore possible, but for its optimisation principle is still little research, this paper through the pretreatment of the basic physical properties, metallurgical properties of the lump ore before and after experimental analysis. At the same time, combined with production practice, the relevant smelting parameters of the blast furnace after the application of different lump ore were compared and analysed, and the excellent impact of lump ore preheating on blast furnace smelting was determined and finally based on the calculation of carbon emissions, the industrial application prospect of preheated lump ore was evaluated from the perspective of environmental protection, and the impact of comprehensive scientific analysis, field practice, theoretical calculation and comprehensive analysis of the impact on lump preheating technology was carried out.