Hot Briquetting Machine

A hot briquetting machine is a valuable industrial tool used to process iron-rich waste materials like iron ore fines, direct-reduced iron (DRI), or hot briquetted iron (HBI) into compact, uniform briquettes. This process involves applying heat and pressure through a hydraulic press to shape the materials into specific briquette sizes and shapes. Here's a simplified breakdown of how these machines work:

  • Feedstock Preparation: Raw materials, such as iron ore fines or DRI, are prepared by crushing, grinding, and screening to achieve the desired size and moisture content.
  • Mixing and Agglomeration: The prepared feedstock is mixed with binders or additives like coal tar pitch or bentonite to enhance briquette strength and cohesion.
  • Heating and Compaction: The mixture is heated to a controlled temperature inside the machine, softening the binder. Simultaneously, hydraulic pressure is applied to compact the material into dense briquettes.
  • Briquette Formation: The heated and compressed mixture is extruded through a die to form briquettes of specific shapes and sizes.
  • Cooling and Solidification: The formed briquettes are cooled and solidified before being discharged from the machine.

Hot briquetting machines find extensive use in the steelmaking industry to recycle iron-rich waste materials generated during production. By converting these wastes into briquettes, steelmakers reduce waste, improve efficiency, and lower production costs. Briquettes also have higher bulk density and better handling properties than loose materials, making them easier to handle, transport, and store.