“Development of a Method to Evaluate in the Laboratory the Burnability of Raw Flour in Clinker Production”

Abstract

The burnability of raw flour was determined for a period of 30 days, with which information was obtained about how the actual free lime of the process, the theoretical free lime and fuel consumption are related to the use of relative free lime. for kiln number 2 at the San Miguel de Cementos Progreso, S.A. plant. during the period from March 10, 2001 to April 12, 2001. In this way, the formula was established that predicts the necessary amount of fuel used (bunker) and its efficiency for certain relative free lime, thus optimizing the process. of clinker production without affecting its quality.

The relationship between the chemical variables LSF (lime saturation index), Ms (silica modulus) and the fineness of the material used was evaluated by preparing samples of different fineness and chemical parameters LSF and Ms, for later burning. at 1400°C and determine the content of calcium oxide (LCaO). With this, the theoretical burnability model was obtained (theoretical LCaO = 0.214LSF + 0.9885Ms + 0.207A45 + 0.0992T125 - 29.9663), with a correlation coefficient R=0.9935 and a standard error of 0.1861.

This model provides information on the mineralogical nature of the raw material and at the same time allows the values ​​of the variables necessary to obtain an optimization in thermal consumption without altering the quality of the clinker produced to be determined.