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The fire protection technology of large space building based on fire water monitor is a research hotspot in the field of fire protection technology. Aiming at the related contents and existing problems of the current fire water monitor research, this paper introduces the working principle and characteristics of the automatic fire water monitor system, and summarizes the research on the fire detection and positioning of the automatic fire water monitor system, the jet trajectory of the fire water monitor and the fire water monitor control system. This paper summarizes the research methods and shortcomings of fire detection positioning, fire water monitor jet trajectory and fire water monitor control system, and puts forward suggestions and prospects.

Iron coke has emerged as a promising raw material for low‐carbon ironmaking. However, the structure and properties of iron coke are still obstacles to practical application in blast furnaces, especially the strength of iron coke. Herein, investigations on the preparation and properties of iron coke are reviewed and an integrated system for the performance optimization and efficient utilization of iron coke is proposed. First, the characteristics of different preparation processes for iron coke are compared; then the advantages and limitations of the three processes are summarized. Afterward, the evolution mechanism of iron coke strength and the catalytic mechanism of Fe on the gasification reaction of iron coke are explored in depth. In addition, the coupling mechanism of iron coke gasification and iron ore reduction is analyzed and discussed. The influence of iron coke on the melting–dropping properties of blast furnace charge and the mathematical simulation of using iron coke in the blast furnace are analyzed and summarized. Finally, a comprehensive strategy for the performance optimization of iron coke and its efficient application in the blast furnace is proposed, in which the sequence slicing 3D reconstruction method is applied to analyze the relationship between microstructure and performance of iron coke.