limestone

CACO3

uses

• buildings
• cement (limestone + powdered clay)
• concrete (cement + water + crushed stone)
•  

heating 

Limestone is heated in a rotary kiln. It thermally decomposes and becomes calcium oxide and cabon dioxide.

limestone cycle

When we ad water to calcim oxide, we get calcium hydroxide.

Calcium carbonate

Limestone

Calcium Oxide

Calcium dioxide given off

Calcium Hyrdroxide

Calcium Hyrdroxide solution

Limewater

HEAT

WATER

MORE WATER

ADD CARBON DIOXIDE