Sign Up
AeroLime™ Project Launch (February 2019) After an extensive product development phase Graymont’s new AeroLime™ product is ready for takeoff.
read more >

Burnt Lime

Technical Name: Calcium Oxide - CaO

Markets: Steel Manufacturing, Gold Mining, Road Stabilisation and Paper Manufacturing.



Our ability to completely volatize limestone ensures we produce an optimum burnt lime product.

  • Burnt Lime is also known as ‘quick lime’ or ‘unslaked’. Burnt Lime is a highly reactive calcium oxide suitable for roading construction, steel manufacture, paper manufacture and sludge stabilisation
  • We take pride in producing lime consistently, by monitoring our processes regularly and meeting or exceeding specifications every day 
  • Graymont's Burnt Lime consists of calcium oxide combined with small amounts of calcium carbonate and silica 
  • Burnt Lime is manufactured by heating calcium carbonate (limestone) to high temperature (greater than 1200°C) within a kiln system
  • Product is supplied in different size gradings from finely ground to coarse material as required

Our Burnt Lime is also an effective option for strengthening other aggregates if a clay component is present.

Product Benefits:
Our Burnt Lime's versatility makes it a valueable additive into a vast number of industrial applications.

Packaging Size:

Available in bulk (tanker) and 1 tonne bulk bags.

  • Hiway Stabilizers
    Hiway Stabilizers are New Zealand’s leading stabilisation specialists – with a company philosophy of sustainable civil engineering. The stabilisation process involves modifying and strengthening existing clay materials for use in roading and construction projects – rather than using new materials to form a project base...
    Read more here Next
  • Oceana Gold
    Macraes Gold Mine is New Zealand’s largest gold-producing operation, producing more than two million ounces of gold since current mining operations began in 1990. Located in the historic Macraes Goldfield, about 100km north of Dunedin, the operation consists of a large-scale open cut mine and underground pit with an adjacent processing plant...
    Read more here Next
  • NZ Steel
    New Zealand Steel Limited is NZ’s sole producer of flat rolled steel products for the construction, manufacturing and agricultural industries. Using locally-sourced iron sand, NZ Steel produces around 600,000 tonnes of steel each year...
    Read more here Next