STEEL PLANTS – CHAIN EQUIPMENT SYSTEMS

Ore & Slag Handling (Hot Mills)

• Heavy‑duty Drag & Apron Feeders
  Plate-link chains for abrasive hot slag or ore.
• Bucket Apron Conveyors
  Inclined transport of slag and hot materials into crushers or silos.

Raw Material Yard / Handling System

Apron Feeders (Iron Ore, Limestone, Dolomite, Coal)

• Purpose: Feeding raw ores and flux materials to primary crushers.
• Chain Type: Heavy-duty forged link or cast steel chain.
• Design Specs:
  • Capacity: 500–2000 TPH.
  • Plate width: 1000–2600 mm.
  • Suitable for high-impact, heavy lump loads.

Scraper Reclaimers

• Purpose: Automated recovery of raw materials from stockpiles.
• Chain Type: Round link, Pin Bush or forged scraper chains.
• Highlights:
  • Bi-directional scraper chain runs.
  • Hardened guide shoes and side bars for abrasive ores.
  • Integration with yard automation systems.

Deep Pan Conveyors (Hot Sinter Handling)

Bucket Elevators (Flux Feeding, Recycle Fines)

• Purpose: Transfers hot sinter (up to 700°C) from cooler to screening station.
• Chain Type: Central forged steel chain heat-treated (≥ 40CrMnMo).
• Design Attributes:
  • Pan widths: 500–2000 mm (Higher customizable sizes available).
  • Temperature resistance: 600–800°C.
  • Pans made from heat-resistant alloy steel, replaceable liners.

• Purpose: Lifting raw mix or flux material into hoppers or mixers.
• Chain Type: Central chain or heavy-duty round link chain (DIN-based).
• Capacity Range: 150–1000 TPH (Higher customizable sizes available).
• Lift Height: Up to 60 m. (Higher customizable sizes available)

Blast Furnace Material Charging

Skip Hoist Feed Systems (elevator alternative)

• Can be replaced in some cases with enclosed Bucket Elevators for compact plants.
• Chain Type: Heavy-duty forged chain for high-stress vertical lift.

Drag Chain Conveyors (Coke/ore mix transfer)

• Purpose: Transfers burden mix to blast furnace or charge bins.
• Chain Type: Drop-forged steel chain.
• Design:
  • Horizontal or inclined layout with guide rails.
  • Multi-discharge gates and enclosed covers for dust control.

Pan Conveyors (Lime, DRI, Return Fines Feed)

• Chain Type: Central chain with dustproof pans.
• Design Notes:
  • Shock-proof construction for sudden loads.
  • Flight bars adapted to granular and powder materials.

Slag Handling Conveyor (Hot Slag)

• Purpose: Transfers molten slag to granulation or dump pit.
• Chain Type: Twin-strand drop-forged chain.
• Specifications:
  • Temperature Resistance: Up to 700–800°C.
  • Slag granulator-compatible options.
  • Heat shielded scraper flights and casing.

Mill Return & Scrap Handling

• Pan Conveyors & Drag Conveyors
  For metal chips, return scrap, and scale to collection bins.

Scrap Return Conveyors

• Purpose: Carries steel scrap and trimmings back to melting or recycling zones.
• Chain Type: Forged drag chain with customized paddles.
• Design Features:
  • Rugged for sharp-edged scrap.
  • Magnetic separator integration (optional).

Billet/Slab Cooling Conveyors

• Though primarily roller-based, some segments use slow-moving drag chains.
• Application: Controlled discharge of hot slabs or billets.

Dust Handling / Baghouse / Fume Control

Ash & Dust Flow Conveyors

• Chain Type: Enclosed drop-forged scraper chains.
• Application: Fume extraction dust, baghouse fly ash.
• Design Options:
  • Explosion-proof hatches.
  • Inspection hatches for chute cleaning.
  • Wear-resistant liners.

COMMON CHAIN TYPES & SPECIFICATIONS

CONSTROMECH ADVANTAGES IN STEEL INDUSTRY

• High-temperature hardened chains for slag and sinter handling.
• Customized apron feeders for DRI plants and sinter zones.
• Bucket elevator systems with abrasion-proof buckets and chain lifters.
• Complete sprocket, guide wheel, and shackle assemblies for all chain types.

Proven references in integrated steel plants, mini mills, and sponge iron units