Maxtech Industries

Ferroalloys

Ferroalloy is an alloy of iron with some elements other than carbon. Ferroalloy is used to physically introduce or ”carry” that element into molten metal, usually during steel manufacture. In practice, the term ferroalloy is used to include any alloys that introduce reactive elements or alloy systems, such as nickel and cobalt-based aluminum systems.

Operating Data

  • Dust To be handled: Molten metal dust
  • Nature of dust: Very fine, free-flowing, mildly abrasive
  • Cleaning Mode: Offline or Online
  • Design Gas temperature: 260 deg C
  • Design Surge Temperature: 280 deg C
  • Dust Load: 1-10 g/m3
  • Baghouse Design: Reverse Air Bag House (RABH) or Pulse Jet (PJ)

Ferroalloys production in India through submerged arc furnace (SAF), is the most preferred way for making bulk ferroalloys of Silicon, Manganese & Chromium. In the open top and semi-closed furnaces the dust is collected in a bag filter plant, whereas in a closed top and plasma furnace, the dust is scrubbed in a venturi system and is produced as a slurry.

340 gsm AR Fiberglass with Membrane750 GSM Fiberglass with MembranePolyester Felt
In a reverse air baghouseIn a pulse jet baghouseWhen the gases are cooled to below 135 deg C, in that case, cheaper polyester felt filter bags can be used
To reduce the emissions below 30 mg/m3, membrane laminated filter bags are required