Limestone is a type of rock, mainly composed of calcium carbonate. It is quarried (dug out of the ground) and used mostly as a building material in the manufacture of cement, mortar and concrete. The construction sector is the main market driver that sets pricing and demand fundamentals for Limestone.
Typical quarried products are classified for sale in categories such as:
- 5 mm Limestone Dust
- 20 mm Limestone Crusher Run
- 20-5 Limestone Concrete Aggregate
- 6 mm Clean Limestone
- 10 mm Clean Limestone
- 20 mm Clean Limestone
- 40 mm Clean Limestone
- Type 1 MOT Limestone
- 6F2 (Bulk fill material used as a capping layer for roads,
- Compounds and storage areas, ideal for providing a solid base)
- Oversized Limestone
- Gabion Stone/Face Stone
- Mixed Aggregate
Other uses include:
- Pulverized limestone is used as a soil conditioner to neutralize acidic soils.
- As a reagent in flue-gas desulfurization, it reacts with sulfur dioxide for air pollution control.
- Glass making, in some circumstances, uses limestone.
- It is added to toothpaste, paper, plastics, paint, tiles, and other materials as both white pigment and a cheap filler.
- It can suppress methane explosions in underground coal mines.
- Purified, it is added to bread and cereals as a source of calcium.
- Calcium levels in livestock feed are supplemented with it, such as for poultry (when ground up)
- It can be used for re-mineralizing and increasing the alkalinity of purified water to prevent pipe corrosion and to restore essential nutrient levels.
- Used in blast furnaces, limestone binds with silica and other impurities to remove them from the iron.
- It is often found in medicines and cosmetics.
- It is used in sculptures because of its suitability for carving.