| 摘要 |
<p>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-.</p> |
