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Pilot plant for atmospheric leaching, Kazakhstan


Pilot plant for atmospheric leaching of low grade sulphide zinc concentrates for the development of processing models

Customer TOO Kazzinc, Ridder, Kazakhstan

Commissioning 2013


Basic and detail engineering, supply of equipment including automation and visualisation system, installation supervision, commissioning, training of personnel, after sales service

Scope of supply

  • Mill for ultrafine grinding
  • Batching equipment for slurries, liquid and powder reagents
  • Tanks equipment with heating and agitators for reagents preparation
  • Precision pumps
  • Mixers
  • Chamber and membrane filter presses
  • Thickener
  • Laser particle sizer
  • Density meter
  • Instrumentation and control equipment
  • Automation system, control cabinet and consoles

Technical data

  • Ultrafine grinding: 80% < 10 μm
  • Slurry capacity: 20 l/h
  • Pressure in the reactors: atmospheric
  • Temperature in leaching reactor: 98°C
  • Reagents: Sulfuric acid, oxygen gas, zinc calcine, foam suppressors, flocculent


Project highlight

Flow rate of sludge
liters per hour