Customer Alrosa, Russia

Commissioning July 2015

Services

Feasibility study incl. laboratory tests for the production of filter cake, basic- and detail engineering, supply of equipment, supervision of mounting, commissioning, training of operating staff, after-sales-service

Scope of supply:

• 7 chamber filter presses incl. high-pressure slurry pumps
• 2-stage thickening including slurry pump units:
  • Hydrocyclone station “ContiClass®System” with 24 pcs. cyclones DN250
  •  Ø 16 m paste thickener with flocculant station
  • Rubber lined intermediate tank with agitator
  • Conveying systems to the truck loading bunker
  • Compressed air supply station for the cleaning of the filter cloths
  • Wear-resistant pipelines for PN16
  • Values with pneumatic drives
  • Pump station for the process water
  • Integration of the new control system in the existing plant automation

Technical data

• Throughput of solids:  6.000 t/day
• Operation 7 days/week 
• Residual moisture of filter cake: 18 – 25%
• Pressure of slurry pumps: up to 15 bar
• Waschwasser Druck: 50 bar
• Pressure for cleaning of filter cloths: 10 bar

Customer benefits

• Installation and commissioning of dewatering system without interrupting the production
• Process water recovery up to 97%
• Reduction of disposal site area: 5 to 6 times less than before
• Dumping is no more applicable because of the detoxified dry cake material that is usable for road construction