0419-090

SCOPE This standard applies to industrial products and by-products intended for use as soil amendments consistent with agronomical or silvicultural principles, and that are derived from: a) the reaction of calcium carbide with water in the production of acetylene [products and by-products essentially containing Ca(OH)2]; b) dust collecting system of lime kilns; c) the production of commercial quicklime [CaO] or hydrated lime [Ca(OH)2]; d) the production of CaCO3 from quicklime; e) kraft pulp mills producing lime mud, green liquor dregs and slaker grit; f) the combustion (with or without auxiliary fuel) of wood, wood residue, animal waste, bleach waste or sludge from wastewater treatment in pulp and paper mills (bottom ash and fly ash from the combustion of these products are generated by sawmills, pulp and paper mills, power stations, wood based panel plants [for example particleboard, plywood]); g) fine by-products resulting from metal recovery during the treatment of slag from steel mills or primary smelters; h) cement kiln dust; i) dust collecting system used in the grinding of limestone or shale rock; j) dust collecting system used in the preparation of calcareous aggregate for bituminous concrete production; j) by-product resulting from the dissolving of magnesite during the production of magnesium; l) deactivated by-product resulting from the cleaning of electrolytic cells and magnesium furnaces during the production of magnesium from magnesite (this product is referred to as BPEF hereafter); m) by-product resulting from the purification of calcium carbonate originating from natural ground calcium carbonate; n) lime sludge resulting from water softening treatment (through the addition of lime) used in boilers to produce steam; o) eggshells from agri-food processing plants. This standard also applies to mixes resulting exclusively from products derived from all the above items, with or without the following liming materials: natural limestone or quicklime, providing the latter reacts fully with water present in the mix to form Ca(OH)2. This document was developed to serve as a reference document for conformity evaluation activities of liming materials. NOTE - Conformity evaluation is defined as the systematic examination of the extent to which a process fulfils specified requirements.