Method of decreasing of chlorides content in the kiln atmosphere of a cement rotation kiln

Apatites, especially hydroxyapatites and/or its precursors containing materials are dosed into cement kiln before burning of clinker, where in the temperature range of 750 to 1250 °C chlorides from kiln atmosphere reacts by heterogeneous reaction into apatite matrix, hydroxyapatite and/or its precur...

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Hauptverfasser:	JAMNICKY MIROSLAV, HRABE ZDENEK, STRIGAC JULIUS, MARTAUZ PAVEL
Format:	Patent
Sprache:	eng ; slo
Schlagworte:	ARTIFICIAL STONE CEMENTS CERAMICS CHEMISTRY COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS CONCRETE LIME, MAGNESIA METALLURGY REFRACTORIES SLAG TREATMENT OF NATURAL STONE
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Beschreibung
Zusammenfassung:	Apatites, especially hydroxyapatites and/or its precursors containing materials are dosed into cement kiln before burning of clinker, where in the temperature range of 750 to 1250 °C chlorides from kiln atmosphere reacts by heterogeneous reaction into apatite matrix, hydroxyapatite and/or its precursors with various stage of dehydroxylation. After the reaction, the content of chlorides in the clinker is elevated in the range of 1.1exp(-5) - 1.0 % by weight of Cl-, advantageously in the range of 2.1exp(-5) - 0,1 % by weight of Cl-.