| 摘要 |
<p>1. Dry process for cement clinker manufacturing consisting in calcining, at least partially, raw materials in a precalcining chamber (4) fitted with a fuel injection device (10) the rate of fuel (Q1) injected into the precalcining chamber (4) being adjusted so as to keep the decarbonation rate of the calcined materials at the said chamber outlet equal to a preset value (D) and in processing the calcined materials to clinkerize them in a rotary tubular kiln (6) equipped with a burner (12) at its clinker discharge end and rotated by a motor (19), characterized by the fact that the fuel feeding rate to the kiln's burner (12) is maintained at a preset value (Q2) which is the sum of two terms : a basic term (Q2') which depends on the rate of fuel (Q1) injected into the precalcining chamber (4) and a corrective term (Q2") which depends on one or several parameters representative of the clinkerizing conditions and selected from the group constituted by the nitrogen oxide content in the exhaust gases (M1), the temperature in the kiln's clinkerizing zone (M2), the temperature of the kiln's exhaust gases (M3), the kiln's drive motor torque (M4), the material's potassium oxide content inside the smoke box (M5) and the clinker's free lime content (M6).</p> |
