The production and development of large blast furnaces in China during 2015

The development of large blast furnaces in China is crucial for energy saving, emission reduction and transformation and promotion processes of iron and steel industry. However, the development of large blast furnaces in China was affected by the lower stability state and lack of new technology developments. In this article, the operation indexes of large blast furnaces of China in 2015 were introduced. Then the reasons for lower stability state of large blast furnaces were analysed and some improved measures were proposed. In addition, some new technical thoughts on the development of large blast furnaces were also proposed.