prEN 12944-3

SLOVENSKI STANDARD
01-januar-2024
Gnojila, sredstva za apnjenje in inhibitorji - Slovar - 3. del: Izrazi v zvezi s sredstvi
za apnjenje
Fertilizers, liming materials and inhibitors - Vocabulary - Part 3: Terms relating to liming
materials
Düngemittel, Kalkdünger und Inhibitoren - Vokabular - Teil 3: Begriffe für Kalkdünger
Ta slovenski standard je istoveten z: prEN 12944-3
ICS:
01.040.65 Kmetijstvo (Slovarji) Agriculture (Vocabularies)
65.080 Gnojila Fertilizers
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

DRAFT
EUROPEAN STANDARD
NORME EUROPÉENNE
EUROPÄISCHE NORM
January 2024
ICS 01.040.65; 65.080 Will supersede EN 12944-3:2019
English Version
Fertilizers, liming materials and inhibitors - Vocabulary -
Part 3: Terms relating to liming materials
Düngemittel, Kalkdünger und Inhibitoren - Vokabular -
Teil 3: Begriffe für Kalkdünger
This draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee
CEN/TC 260.
If this draft becomes a European Standard, CEN members are bound to comply with the CEN/CENELEC Internal Regulations
which stipulate the conditions for giving this European Standard the status of a national standard without any alteration.

This draft European Standard was established by CEN in three official versions (English, French, German). A version in any other
language made by translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC
Management Centre has the same status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye and
United Kingdom.
Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are
aware and to provide supporting documentation.

Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without
notice and shall not be referred to as a European Standard.

EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2024 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 12944-3:2024 E
worldwide for CEN national Members.

Contents Page
European foreword . 3
1 Scope . 4
2 Normative references . 4
3 Terms and definitions . 4
3.1 Terms relating to products of production . 4
3.2 Terms relating to physical or physico-chemical properties . 7
3.3 Terms relating to agricultural and environment liming purposes and use . 9
3.4 Terms relating to liming effect . 9
Annex A (informative) Index . 10
Annex B (informative) General index . 13
Bibliography . 22

European foreword
This document (prEN 12944-3:2023) has been prepared by Technical Committee CEN/TC 260 “Fertilizers
and liming materials”, the secretariat of which is held by DIN.
This document is currently submitted to the CEN Enquiry.
This document will supersede EN 12944-3:2019.
The following changes have been made to the former edition:
a) the definitions of 3.1.17 "limestone", 3.1.18 "magnesian limestone" and 3.1.19 "dolomitic limestone" have
been revised to be in line with minimum and maximum magnesium oxide (MgO) contents of EN 14069;
b) blast furnace lime and blast furnace slag (see 3.1.22) have both been recognized as preferred terms;
c) converter lime and converter slag (see 3.1.23) have both been recognized as preferred terms;
d) the term "free lime" was modified to "free lime effect in soil" (see 3.4.4);
e) addition of EN 14069 in the bibliography;
f) update of the reference to ISO 8157 in the bibliography.
EN 12944, Fertilizers, liming materials and inhibitors — Vocabulary, is currently composed of the following
parts:
— Part 1: General terms.
— Part 2: Terms relating to fertilizers.
— Part 3: Terms relating to liming materials.
These definitions do not necessarily correspond to those used in national legislation.
NOTE A classification scheme for fertilizers and liming materials is given in EN 13535 [1].
1 Scope
This document defines terms relating to liming materials.
An index of all terms defined in this part of EN 12944, with their French and German equivalents, is given in
Annex A.
A general index of all terms defined in all three parts of EN 12944, with their French and German
equivalents, is given in Annex B.
2 Normative references
There are no normative references in this document.
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
ISO and IEC maintain terminology databases for use in standardization at the following addresses:
• IEC Electropedia: available at http://www.electropedia.org/
• ISO Online browsing platform: available at http://www.iso.org/obp
3.1 Terms relating to products of production
3.1.1
calcination
burning or heating of a material, usually in order to remove volatile components or in order to change the
crystal structure
3.1.2
carbonation
conversion of slaked lime to carbonate by uptake of carbon dioxide
3.1.3
chalk
form of calcium carbonate derived from the skeletons of microscopic marine organisms
3.1.4
wet grinding
grinding of material in the presence of water
3.1.5
degree of burning
degree to which carbon dioxide has been removed during the production of quicklime or burnt dolomite
3.1.6
lime-burnt dolomite
dolomitic limestone calcined to the same carbon dioxide level as normally burnt limestone
3.1.7
burnt dolomite
liming material mainly consisting of calcium oxide and magnesium oxide obtained by calcination of
dolomitic limestone
3.1.8
burnt magnesium lime
liming material mainly consisting of calcium oxide and magnesium oxide obtained by calcination of
magnesian limestone
3.1.9
free lime
< products and production > the calcium oxides and/or hydroxides which have not reacted with the liming
material they are included in
Note 1 to entry: A definition of free lime relating to soils is given in 3.4.4.
3.1.10
kiln
general term for the equipment used for lime burning
3.1.11
rotary kiln
rotary tubular counter-current kiln
3.1.12
shaft kiln
kiln constructed as a vertical combustion shaft
3.1.13
lime
general term for burnt lime and hydrated lime
3.1.14
burnt lime
quick lime
liming material consisting mainly of calcium oxide, or a mixture of calcium oxide and possibly magnesium
oxide, produced by the calcination of limestone, magnesian limestone or dolomitic limestone
3.1.15
filter lime
liming material in the form of dust, obtained from flue gases during lime burning
3.1.16
slaked lime
hydrated lime
liming material consisting mainly of calcium hydroxide, or a mixture of calcium hydroxide and possibly
magnesium hydroxide, produced by a controlled reaction between burnt lime and water
Note 1 to entry: The reaction between burnt lime and water is referred to as “slaking”.
3.1.17
limestone
natural rock consisting mainly of varying amounts of calcium carbonate and magnesium carbonate,
containing less than a mass fraction of 3 % of magnesium oxide (MgO)
Note 1 to entry: To convert magnesium oxide (MgO) to elemental magnesium (Mg) multiply by 0,603.
3.1.18
magnesian limestone
natural rock consisting mainly of varying amounts of calcium carbonate and magnesium carbonate,
containing a mass fraction of at least 3 % and less than 12 % of magnesium oxide (MgO)
Note 1 to entry: To convert magnesium oxide (MgO) to elemental magnesium (Mg) multiply by 0,603.
3.1.19
dolomitic limestone
natural rock consisting mainly of varying amounts of calcium carbonate and magnesium carbonate,
containing a mass fraction of at least 12 % of magnesium oxide (MgO)
Note 1 to entry: To convert magnesium oxide (MgO) to elemental magnesium (Mg) multiply by 0,603.
3.1.20
liming material
agricultural lime
mineral substances and mixtures whose main function is to correct soil acidity improving physical, chemical
and biological soil properties and which contains either oxides, hydroxides, carbonates, or silicates of the
nutrients calcium and/or magnesium
Note 1 to entry: The terms “lime” and “liming soil amendment” are also used, but “liming material” or “agricultural
lime” are preferred.
3.1.21
silicate liming material
basic slag from metallurgical processes such as blast furnaces or converters
3.1.22
blast furnace lime
blast furnace slag
product from ironmaking consisting mainly of calcium silicates and magnesium silicates
3.1.23
converter lime
converter slag
product from steelmaking consisting mainly of calcium silicates
3.1.24
sludge liming material
product from industry consisting of calcium carbonate and/or calcium hydroxide and a substantial amount
of water
3.1.25
sugar factory lime
product from the sugar industry obtained by carbonation and containing calcium carbonate
3.1.26
marl
soft, natural deposit containing varying amounts of calcium carbonate mixed with clay
3.1.27
carbonate rock
natural rock with a carbonate mineral as its main constituent
Note 1 to entry: Limestone, chalk, dolomitic limestone and magnesite are examples of carbonate rocks.
3.1.28
calcite
trigonal crystalline form of calcium carbonate
3.1.29
aragonite
orthorhombic crystalline form of calcium carbonate
3.1.30
magnesite
crystalline mineral with the chemical composition magnesium carbonate isomorphic with calcite
3.1.31
slag
general term for a liming material from metallurgical processes consisting mainly of calcium silicates and
magnesium silicates
3.1.32
dry slaking
slaking of burnt lime with least possible amount of water resulting in a powdery slaked lime
3.1.33
wet slaking
slaking of burnt lime with surplus water resulting in slaked lime in the form of milk-of-lime, slurry or paste
3.1.34
liming material of natural origin
calcium or calcium and magnesium carbonates, oxides and hydroxides produced from naturally occurring
geological deposits
3.2 Terms relating to physical or physico-chemical properties
3.2.1
acid insoluble residue
matter remaining after the liming material has been dissolved in hydrochloric acid (HCl)
Note 1 to entry: For the English term “acid insoluble residue” AIR is commonly used as an abbreviation.
3.2.2
alkaline solution
basic solution
solution with a pH higher than 7
3.2.3
alkalinity
capacity to neutralize acids, i.e. absorbing hydrogen ions (H+)
3.2.4
acid solution
solution with a pH lower than 7
3.2.5
acidification
+
natural or imposed process due to accumulation of H or other acid compounds resulting in lowering pH
values in soils, watercourses and lakes
3.2.6
buffer capacity
capacity to resist a change in pH value when acid or alkali is added
3.2.7
basicity
ratio between alkaline oxides and acidic oxides
3.2.8
neutralization
+ -
reaction when a surplus of H or OH is eliminated through addition of alkali or acid respectively
+
Note 1 to entry: Liming materials are used to eliminate surplus of H .
3.2.9
carbon dioxide residue
residual carbonate content measured as carbon dioxide (CO ) in burnt lime
3.2.10
loss on ignition
mass loss by heating a dried sample to constant mass at a specified temperature
Note 1 to entry: For the English term “loss on ignition”, "LOI" is commonly used as an abbreviation.
3.2.11
neutralizing effect
ability of a liming material to neutralize soil acidity or water acidity
3.2.12
pH value
10-logarithm for the inverted value of the hydrogen ion activity in a solution
3.2.13
neutralizing value
NV
number which represents the amount in kilograms of calcium oxide (CaO) or corresponding unit which has
the same neutralizing effect as 100 kg of the product under consideration
-
Note 1 to entry: Several units can be used (CaO equivalent, CaCO equivalent, or HO equivalent).
3.2.14
reactivity
rate of reaction of a liming material with acid under specified conditions measured with a specific standard
[SOURCE: ISO 8157:2022, 3.4.17]
3.2.15
“base” saturation rate
proportion of exchangeable calcium, magnesium, potassium and sodium of the total cation exchange
capacity (CEC) of the soil
Note 1 to e
...