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Alternate Names: Burnt Lime, Dead-burned lime

Oxide Analysis Formula
CaO 100.00% 1.00
Oxide Weight 56.10
Formula Weight 56.10


Quicklime is calcined calcium carbonate or limestone. It is unstable (wants to reabsorb the lost CO2) so must be used quickly or sealed from exposure to the air. It is used as a source of CaO in the glass and enamel industries and in refractories (often in combination with calcined dolomite).

If Quicklime is calcined higher than necessary for slaking (to make calcium hydroxide) it is referred to as dead-burned lime.

Related Information


Quicklime at Wikipedia
Lime kiln at wikipedia
What is Quicklime at
Temperatures Calcium carbonate decomposition (750-1000)
Typecodes Refractory
Materials that melt at high temperatures. These are normally used for kiln bricks, furniture, etc. or for ceramics that must withstand high temperatures during service.
Typecodes Flux Source
Materials that source Na2O, K2O, Li2O, CaO, MgO and other fluxes but are not feldspars or frits. Remember that materials can be flux sources but also perform many other roles. For example, talc is a flux in high temperature glazes, but a matting agent in low temperatures ones. It can also be a flux, a filler and an expansion increaser in bodies.
Materials Calcined Dolomite
Materials Precipitated Lime
Oxides CaO - Calcium Oxide, Calcia
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