Page 14 - Technology Compendium

CSIR-IMMT/MIN - 03

Column Thickener for Dewatering of Slurry

Advantages / Salient Technical Features Major Raw Materials to be Utilized
• Space required to install the plant is less as compared • Steel, Magnet
to the conventional thickeners.
• Overall performance of the process is enhanced and IPR Status / Details (India/Abroad)
day-today maintenance requirement is less. • Column thickener and process thereof

• The instrument contains different feed inlet points for dewatering of iron ore slurry. (Grant
along the height of the column. Depending on the No.: Indian, 339093); USA (Grant No:
capacity of overflow water and underflow, slurry US10370271)
density requirement inlet point can be varied Application/Uses
• Provisions have been given to apply magnetic field to • Column thickener is an efficient dewatering
the column. The applied magnetic field will increase system with tall vertical column for
the settling rate of the iron ore slurry. dewatering of slurry
• An auxiliary inlet point has been provided at the
bottom of the column for clearing jam if it happens in Scale of Development
the bottom conical portion of the column. • Lab Validation and demonstrated (Current
• Larger aspect ratio of the column helps to increase TRL Level : 04)
the underflow slurry density of the thickener. No
moving part Commercialization Status
• Licensed for commercialization
Problem being addressed
• This is an improved dewatering technology for Technology Package
efficient dewatering of high clay content mineral • Concept to Design
slurry

Environmental Considerations (if any)
• Environment friendly

12