ASPEN Metal and Mining

Technical Expertise

Gas Cleaning & Sulphuric Acid

Conditioning metallurgical off-gas and turning its sulphur dioxide into saleable acid rather than an emission.

Gas cleaning

  • Waste-heat boilers and gas cooling
  • Cyclones and electrostatic precipitators
  • Wet scrubbing and gas conditioning towers
  • Mercury and halide removal
  • Weak acid handling and treatment

Sulphuric acid

  • Double-contact double-absorption (DCDA) plants
  • Catalyst beds, heat recovery and steam export
  • Tail-gas treatment to meet emission limits
  • Acid cooling, storage and loading