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Aerated Autoclave Concrete, also commonly called cellular concrete or “Aircrete"


Reduction of the pH of soil, waterways and lakes.


A granular material used in construction. The most common natural aggregates of mineral origin are sand, gravel and crushed rock. (< 95% CaCO3)

Agricultural lime

Lime and dolomite products that are used in agriculture to neutralize the soil acidity

Air Lime

Calcic or dolomitic limes are called air limes because they combine and harden with the carbon dioxide present in the air

Building lime

May be a quick or hydrated lime, whose physical characteristics make it suitable for structural purposes. Usually used as binder for building mortar.


Heating material to release volatile constituents or change the crystal structure.


Crystalline mineral consisting of calcium carbonates.

Calcium hydroxide

Is obtained when calcium oxide is mixed, or 'slaked' with water. Also called slaked lime, Ca(OH)2.

Calcium magnesium oxide

Burnt dolomite (CaO-MgO).

Calcium oxide

Quick lime (CaO), produced by calcination of limestone and/or dlomitic rock.


European Committee for Standardisation. See

Chemical lime

A quick or hydrated lime that is used for one or more of the many chemical and industrial applications. Usually it possesses relatively high chemical purity.

Coating pigment

Pigment for coating paper, usually supplied as slurry. Mixture of very bright, clean particles, such as pulverized limestone or kaolin.

Dead burnt dolomite

A highly sintered form of dolomitic quicklime which is used primarily as a basic refractory.

Dead burnt lime

Sinterized quicklime which does not slake readily under normal conditions.

Dolomite stone

Type of rock which consists mainly of the mineral dolomite (10-50%), commonly called dolomite. (CaCO3-MgCO3)

Dolomitic limestone

Limestone that includes small amounts of the mineral dolomite.


Flue Gas Desulfurisation. The processes employed for the removal of gaseous sulfur dioxide from boiler exhaust gas at coal-fired electricity generating plants.


Fine ground limestone or dolomite stone. Used as a filler in asphalt, plastics, paint and paper, for example.


Flocculation is a process where a solute comes out of solution in the form of floc or flakes. Flocculation and sedimentation are widely employed in the purification of drinking water as well as sewage treatment and treatment of other industrial wastewater streams.

Fluxing lime

Fluxing lime is lump or pebble quicklime used for fluxing in steel manufacture, or the term may be applied more broadly to include fluxing of nonferrous metals and glass. It is a type of chemical lime.


Ground Calcium Carbonate.


The common name for the mineral consisting primarily of fully hydrated calcium sulfate,CaSO4 x 2H2O or calcium sulfate dihydrate. Gypsum occurs naturally in many areas, and is produced by some wet Flue Gas Desulfurization (FGD) processes.

Hydrated lime

Slaked lime,calcium hydroxide - Ca(OH)2.

Hydraulic lime

A chemically impure form of lime with hydraulic properties of varying extent, that possesses appreciable amounts of silica, alumina and usually some iron, chemically combined with much of the lime. Usually used as binder for plaster and mortar.

Lake liming

Spreading of pulverized limestone used to combat acidification in lakes.

Lime putty (or putty lime)

A mixture of lime (calcium hydroxide) in water which is used for the production of lime plasters, renders, mortars etc.

Lime-burned dolomite

Calcinated dolomite stone with a carbon content similar to that of normal roast limestone.


Sedimentary rock composed of the mineral calcite (calcium carbonate or CaCO3).

Lump quicklime

Lump quicklime usually refers to products with a top size above 2.5 cm.

Magnesian limestone

A limestone containing apprciable amounts of magnesium, at least 90% calcite and no more than 10% dolomite.

Micronised limestone

Also called ground limestone with a top size < 300µ.

Milk of lime

A suspension of calcium hydroxide particles in water. These particles give it the milky aspect.


A mix of one or more inorganic or organic binders, aggregates, fillers, additives and/or admixtures.


Elimination of excess H+ (or OH-) ions by adding base (or acid).


Precipitated Calcium Carbonate, also known as purified, refined or synthetic calcium carbonate.

Pebble quicklime

Pebble quicklime usually refers to screened products with a top size in the range of 1,5 to 6cm.


Pozzolanic is used to describe materials, which contain reactive silica, and which, when mixed with quicklime and water, set to a hard mass.

Pulverized lime

Lime with a top size < 3mm.


Lime product consisting mainly of CaO. Produced from limestone from which carbon dioxide has been removed by heating.

Reactivity of quicklime

Measure of the rate at which it reacts with water. ‘Moderate', ‘medium', and 'low' reactivity are used as broad classifications for quicklimes.

Rendering mortar

Durable coating of lime and aggregate, which provides a protective covering to the walls of a building.

Sandlime bricks

Calcium silicate bricks produced by autoclaving a mixture of sand and lime.


Any of several forms of chemical/physical devices that remove sulfur compounds formed during coal combustion and especially from coal-fired power plants.

Sinterized lime

Dead burnt lime.


Refers to the solid or liquid impurities removed from molten metal in the metallurgical processing.

Slaked lime

Hydrated lime


Any solid or semisolid or liquid waste generated from a municipal, commercial, or industrial wastewater treatment plant water supply treatment plant or air pollution control facility (wet scrubbers) or any other such waste having similar characteristics and effect.


Particles in suspension in water.

Soft burned lime

A quicklime calcined at relatively low temperature. It is characterised by its high porosity and chemical reactivity.


The term applied in some combustion systems, to the chemical compounds that are added to the gas side of the steam generator to reduce (sorb) emissions. For example, limestone is used in fluidized-bed steam generators to reduce sulfur dioxide emissions.


Form of plaster for coating walls.

Sulphur absorber

It binds Sulphur in flue gases to form solid phases that can be removed.


A bright, nearly waterproof lime plaster which can be used on the inside of buildings and on the outside.

Type N hydrated lime

Normal hydrated lime.

Type S hydrated lime

Also called special hydrated lime, is an ASTM designation to distinguish a structural hydrated from a normal hydrated lime.


Synonymous with milk of lime, a dilute lime hydrate suspension.

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