1、Fertilizers and liming materials Vocabulary Part 3: Terms relating to liming materials The European Standard EN 12944-3:2001 has the status ofa British Standard ICs 65.080 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW BS EN 12944-3 12002 BS EN 12944-312002 Amd. No. National
2、foreword Date Comments This British Standard, having been prepared under the direction of the Materials and Chemicals Sector Policy and Strategy Committee, was published under the authority of the Standards Policy and Strategy Committee on 28 January 2002 This British Standard is the official Englis
3、h language version of The UKparticipation in its preparation was entrusted to Technical Committee CIV37, Fertilizers and related chemicals, which has the responsibility to: EN 12944-3 1200 1. - - aid enquirers to understand the text; present to the responsible European committee any enquiries on the
4、 interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European developments and promulgate them in the UK. - A list of organizations represented on this committee can be obtained on request to its secretary. Cr oss-r e fer enc e s The British
5、 Standards which implement international or European publications referred to in this document may be found in the BSI Standards Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Find” facility of the BSI Standards Electronic Catalogue. A British S
6、tandard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cov
7、er, an inside front cover, the EN title page, pages 2 to 17 and a back cover. The BSI copyright date displayed in this document indicates when the document was last issued. O BSI 28 January 2002 ISBN O 580 38917 O EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 12944-3 November 2001 ICs 01.040.
8、65; 65.080 English version Fertilizers and liming materials - Vocabulary - Part 3: Terms relating to liming materials Engrais et amendements calciques et/ou magnsiens - Vocabulaire - Partie 3: Termes relatifs aux amendements calciques et/ou magnsiens Dngemittel und Calcium-/Magnesium- Bodenverbesser
9、ungsmittel - Wrterbuch - Teil 3: Begriffe fr Calcium-/Magnesium-Bodenverbesserungsmittel This European Standard was approved by CEN on 29 September 2001 CEN members are bound to comply with the CENKENELEC Internal Regulations which stipulate the conditions for giving this European Standard the statu
10、s of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the Management Centre or to any CEN member. This European Standard exists in three official versions (English, French, German). A vers
11、ion in any other language made by translation under the responsibility of a CEN member into its own language and notified to the Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France
12、, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION EUROPISCHES KOMITEE FR NORMUNG COMIT EUROPEN DE NORMALISATION Management Centre: rue de Stassart, 36 B-1050 Brussels O 2001 CEN
13、 All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 12944-3:2001 E EN 12944-312001 (E) Foreword This European Standard has been prepared by CEN/TC 260 “Fertilizers and liming materials“, the secretariat of which is held by DIN. This Europ
14、ean Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by May 2002, and conflicting national standards shall be withdrawn at the latest by May 2002. This European standard is in three parts: - Part I: General terms.
15、- Part 2: Terms relating to fertilizers. - Part 3: Terms relating to liming materials. These definitions may not necessarily correspond with those used in national legislation. NOTE A classification scheme for fertilizers and liming materials is given in EN 13535. The annexes A and B are informative
16、. According to the CENKENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Po
17、rtugal, Spain, Sweden, Switzerland and the United Kingdom. 2 EN 12944-312001 (E) 1 Scope This European Standard 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 ter
18、ms defined in all three parts of EN 12944, with their French and German equivalents, is given in annex B. 2 Terms and definitions 2.1 Terms relating to products or production 2.1 .I calcination burning or heating of a material, usually in order to remove volatile components or in order to change the
19、 crystal structure 2.1.2 carbonation conversion of slaked lime to carbonate by uptake of carbon dioxide 2.1.3 chalk form of calcium carbonate derived from the skeletons of microscopic marine organisms 2.1.4 wet grinding grinding of material in the presence of water 2.1.5 degree of burning degree to
20、which carbon dioxide has been removed uring the production of quicklime or ,urnt dolomite 2.1.6 lime-burnt dolomite dolomitic limestone calcined to the same carbon dioxide level as normally burnt limestone 2.1.7 burnt dolomite liming material mainly consisting of calcium oxide and magnesium oxide ob
21、tained by calcination of dolomitic limestone 2.1.8 burnt magnesium lime liming material mainly consisting of calcium oxide and magnesium oxide obtained by calcination of magnesian limestone 2.1.9 free lime the calcium oxides and/or hydroxides which have not reacted with the liming material they are
22、included in NOTE A definition of free lime relating to soils is given in 2.4.4. 3 EN 12944-312001 (E) 2.1.10 kiln general term for the equipment used for lime burning 2.1 .I 1 rotary kiln rotary tubular counter-current kiln 2.1.12 shaft kiln kiln constructed as a vertical combustion shaft 2.1.13 lim
23、e general term for burnt lime and hydrated lime 2.1.14 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 2.1.15 filter lime liming
24、material in the form of dust, obtained from flue gases during lime burning 2.1.16 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
25、The reaction between burnt lime and water is referred to as “slaking“. 2.1.17 limestone natural rock consisting mainly of varying amounts of calcium carbonate and magnesium carbonate, containing less than a mass fraction of 2 % of magnesium expressed as Mg 2.1.18 magnesian limestone natural rock con
26、sisting mainly of varying amounts of calcium carbonate and magnesium carbonate, containing a mass fraction of at least 2 % and less than 10 % of magnesium expressed as Mg 2.1.19 dolomitic limestone natural rock consisting mainly of varying amounts of calcium carbonate and magnesium carbonate, contai
27、ning a mass fraction of at least 10 % of magnesium expressed as Mg 2.1.20 liming material agricultural lime inorganic material containing one or both of the elements calcium and magnesium, mainly in the form of oxide, hydroxide, carbonate, or silicate, principally intended to maintain or raise the p
28、H in soil and water and to improve plant nutrition and to modify physical properties of soil NOTE 1 The term “lime“ is also used but “liming material“ or “agricultural lime“ are preferred. NOTE 2 In France, the expression “amendement minral basique“ is now preferred to “amendement calcique eou magns
29、ien“ (liming product) when referring to of a product having an effect on the pH of the soil. 4 EN 12944-312001 (E) 2.1.21 silicate liming material basic slag from metallurgical processes such as blast furnaces or converters 2.1.22 blast furnace lime blast furnace slag product from ironmaking consist
30、ing mainly of calcium silicates and magnesium silicates 2.1.23 converter lime converter slag product from steelmaking consisting mainly of calcium silicates 2.1.24 sludge liming material product from industry consisting of calcium carbonate and/or calcium hydroxide and a substantial amount of water
31、2.1.25 sugar factory lime product from the sugar industry obtained by carbonation and containing calcium carbonate 2.1.26 marl soft natural deposit containing varying amounts of calcium carbonate mixed with clay 2.1.27 carbonate rock natural rock with a carbonate mineral as its main constituent NOTE
32、 Limestone, chalk, dolomitic limestone and magnesite are examples of carbonate rocks. 2.1.28 calcite trigonal crystalline form of calcium carbonate 2.1.29 aragonite orthorhombic crystalline form of calcium carbonate 2.1.30 magnesite crystalline mineral with the chemical composition magnesium carbona
33、te isomorphic with calcite 2.1.31 slag general term for a liming material from metallurgical processes consisting mainly of calcium silicates and magnesium silicates 2.1.32 dry slaking slaking of burnt lime with least possible amount of water resulting in a powdery slaked lime 2.1.33 wet slaking sla
34、king of burnt lime with surplus water resulting in slaked lime in the form of milk-of-lime, slurry or paste 5 EN 12944-312001 (E) 2.1.34 liming material of natural origin calcium or calcium and magnesium carbonates, oxides and hydroxides produced from naturally occuring geological deposits 2.2 Terms
35、 relating to physical or physico-chemical properties 2.2.1 acid insoluble residue matter remaining after the liming material has been dissolved in hydrochloric acid (HCI) NOTE For the English term “acid insoluble residue“ AIR is commonly used as an abbreviation. 2.2.2 alkaline solution basic solutio
36、n solution with a pH higher than 7 2.2.3 al ka1 i ni ty capacity to neutralize acids, .e. absorbing hydrogen ions 2.2.4 acid solution solution with a pH lower than 7 2.2.5 acidification natural or imposed process resulting in lower pH values in soils, watercourses and lakes 2.2.6 buffer capacity cap
37、acity to resist a change in pH value when acid or alkali is added 2.2.7 basicity ratio between alkaline oxides and acidic oxides 2.2.8 neutralization reaction when a surplus of H or OH- is eliminated through addition of alkali or acid respectively NOTE Liming materials are used to eliminate surplus
38、of H . 2.2.9 carbon dioxide residue residual carbonate content measured as carbon dioxide (CO,) in burnt lime 2.2.10 loss on ignition mass loss by heating a dried sample to constant mass at a specified temperature NOTE For the English term “loss on ignition“ LOI is commonly used as an abbreviation 2
39、.2.1 1 neutralizing effect ability of a liming material to neutralize soil acidity or water acidity 6 EN 12944-312001 (E) 2.2.12 pH value 10-logarithm for the inverted value of the hydrogen ion activity in a solution 2.2.13 neutralizing value NV number which represents the amount in kilograms of cal
40、cium oxide (Cao) which has the same neutralizing effect as 100 kg of the product under consideration 2.2.14 reactivity rate of reaction of a liming material with acid under specified conditions 2.2.1 5 specific area particle surface area per volume of a mineral product including possible internal po
41、res 2.3 Terms relating to agricultural and environmental liming purposes and use 2.3.1 liming for preservation purposes periodic liming of soils or water to correct and maintain the pH value appropriate for the habitat in question 2.3.2 liming for rehabilitation purposes liming of soils or water in
42、one or several steps to increase the pH value to a level appropriate for the habitat in question 2.3.3 liming for soil protection purposes liming of arable grass land or forest soils to limit erosion and maintain the soil pH at a level which inhibits the availability of harmful minor elements 2.4 Te
43、rms relating to liming effect 2.4.1 I i me req u i remen t amount of liming material required to replace the loss of lime in the soil or in the water occurring in the habitat, or needed to reach a defined level 2.4.2 liming effect effect of a liming material on soil physical properties and pH increa
44、se 2.4.3 total liming effect theoretical maximum acid neutralizing capacity when a liming material has stopped reacting in the soil or in the water 2.4.4 free lime soil excess liming material calcium or magnesium carbonates and/or hydroxides which have not reacted with any soil particles NOTE A defi
45、nition of free lime relating to products or production is given in 2.1.9. 7 n W U n o w n IL w n W U z W U C m X 3 m r o L 3 P L 3 Q U a, U + !.! 2% C Y - ._ L P J + m C a, C rn O ._ ._ L u- O - ._ O u) L P n W U Y I, Y m Y N :q h Y m Y a, O e Y o m m - 9. L a, U 3 .a, O J L o u) % n W U z W U ._ +2
46、 C O 3 m U 1 m C u) Y m o ._ C + + “ m m n W U n W U z W A C O 3 U ._ Y P a U C 3 a, 3 U Y P h rn C 3 N A C U C m u) + n W w I Y L 3 P C Y - ._ L 3 Q L P n W U N-N -N N- “! x a, C rn O ._ ._ L O rn C 3 LI a, (B 1 3 U ._ t a, u) x - F $ YY m C aa, LL rnrn EE L m Q n W U n o v a, 3 IJ C m O ._ P a, u)
47、 ,a, C x u) 5 a, U L u) 3 O C a, 8 rn C 3 Y Y L a, U rn C 3 5 3 ._ E 8 m u) - m O + + EN 12944-312001 (E) Bibliography EN 13535, Fertilizers and liming materials -Classification. 17 BS EN 12944-3 12002 BSI 389 Chiswick High Road Lon don w4 4AL BSI is the independent national body responsible for pre
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