Innovation and Application on High Blast Temperature Technology of Shougang Blast Furnace

摘要

Since stepping on 21st century, blast furnace (BF) ironmaking process is faced with many major development issues on restriction again by aspects of natural resources shortage, undersupply of energy resources, ecological environment protection, etc. In the present fierce market competition environment at domestic and abroad, and in the face of severe situation and challenge, with consideration of sustainable development of BF ironmaking process in 21st century, it is a must to have remarkable breakthroughs on aspects of high efficiency and low consumption, energy saving and emission control, circular economy, low carbon metallurgy, clean and environment protection, etc. It is necessary to have further increase of blast temperature and reduction of fuel ratio in order to improve vitality and competitiveness of BF ironmaking technology. BF ironmaking production system with characteristics of high efficiency, low consumption, low cost and low emission is established with effort in order to realize sustainable development of BF ironmaking process, and actualize low carbon smelting and circular economy. High blast temperature is one of the important technical features of modern BF ironmaking. Improvement of blast temperature is key and common technology of development of circulating economy, realization of low carbon smelting, energy saving and emission control, and sustainable development at present in iron and steel industry. High blast temperature has extreme important significance to improvement of integrative BF technical level, reduction of CO_2 emission, and leading the industry technology progress.