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LimeLine lime kilns

Highly efficient and reliable lime reburning for white liquor production

The modern and proven ANDRITZ lime reburning solution consists of a LimeKiln reburning kiln, a LimeFlash dryer, a LimeCool cooler and a LimeFire burner.

The challenge

Producing consistently high-quality burnt lime for slaking requires not only advanced knowledge of the calcining process, but also effective energy conservation and emissions control. The lime kiln is a huge consumer of energy in a pulp mill, and a large potential generator of CO2 emissions (a by-product from the conversion of calcium carbonate into calcium oxide). Heat consumption and emissions need to be strictly controlled to consistently produce high-quality lime for cooking liquors.

The solution

ANDRITZ’s expertise in lime reburning has been thoroughly and successfully proven in more than 100 installations around the world. The fully automated LimeKiln package advantages include low heat consumption, low emissions, and excellent availability. As an alternative, the lime kiln can also burn biofuels.

Processes and technologies available from ANDRITZ

LimeKiln – efficient and reliable lime reburning

  • Low fuel consumption with two-layer brick lining
  • Low emissions
  • Highly reliable carrying and thrust rollers
  • Low NOx technology
  • Precise control of flue gas temperature
  • Easy and fast start-up
  • No internals needed
  • Integrated with LimeCool cooler and LimeFire burner

LimeFlash – lime mud drying

  • Dries mud completely before kiln feed
  • No chain section, no moving parts
  • Better flue gas temperature control
  • High efficiency cyclone, utilizes heat energy in flue gases
  • Increases production capacity for given size of a kiln shell

LimeCool – compact lime handling, cooling, and primary air heating

  • Low heat loss
  • Optimum cooling of lime
  • High capacity with efficient use of space
  • Internal dam
  • Clean working environment
  • No burner tunnel
  • Less overhanging weight
Lime kiln

ANDRITZ expertise in lime reburning has been thoroughly and successfully proven in dozens of installations around the world


ANDRITZ Oy, Finland

Phone: +358 (0)20 450 5555

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