Device for preparing spherical iron powder through hydrogen-based flash reduction of ultra-pure iron ore concentrate

• Main Authors: WANG XINGNAN, CHEN XUEGANG, GAO YONGLIANG
• Format: Patent
• Language: Chinese; English
• Published: 31.10.2023
• Subjects: CASTING; MAKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; PERFORMING OPERATIONS; POWDER METALLURGY; TRANSPORTING; WORKING METALLIC POWDER

The device comprises a flash reduction assembly and a fluidized bed assembly, the flash reduction assembly comprises a flash reduction furnace, the flash reduction furnace is provided with a first chamber and a first discharge port which are communicated with each other, the first chamber is internally provided with the ultra-pure iron ore concentrate and H2-rich reducing gas, and the second chamber is internally provided with a second chamber and a second discharge port which are communicated with each other. The ultra-pure iron ore concentrate is subjected to hydrogen-based flash reduction in the first chamber and generates spherical iron powder, the fluidized bed assembly comprises a fluidized bed, the fluidized bed is provided with a second chamber and a second discharge port which are communicated with each other, and the second chamber is internally provided with reducing gas containing CO and H2; and the spherical iron powder in the first chamber can enter the second chamber through the first discharge