Abstract: Hangang New Area is an integrated relocation project of Hangang East District. Limited by the mountainous terrain and land area, the project adopts compact layout, the nearest distance from blast furnace to converter is 450 m, and the area of tons of steel is only 0.3 m². The iron and steel interface adopts the “one tank technology” mode using vehicle for the transportation of hot metal, and the hot metal tank can be pulled to steelmaking production in 10 minutes after receiving hot metal. And the use of digital, Internet of Things and other new technologies to assist, after the improvement and optimization since the operation, the new district hot metal tank turnover rate reached 7.0 times/day, the steelmaking hot metal temperature of 1 440 ℃, the proportion of “one tank technology” 99 %, which respectively increased 4.0 times/day, 98 ℃, 39 percentage points higher than before the relocation.Hot metal temperature decreased to 82 ℃, 81 ℃ lower than that before the relocation. The significant reduction in interface heat loss has created favorable conditions for increasing steel and reducing consumption in the steelmaking process, which is in line with the national concept of energy conservation and emission reduction, and has certain reference significance for the “dual carbon” strategy of the industry. 

Key words: iron steel interface, compact type, one tank technology, turnover rate of hot metal tank, temperature drop of hot metal