System for manufacturing cement clinker

Abstract

Provided is a system for manufacturing cement clinker that is applicable to low-temperature firing of cement clinker, and enables obtaining high-quality cement. The system is provided with: a means for supplying a mineralizer fluorine source and sulphur source; a means for supplying a clinker raw material; a means for pulverizing the blended raw material combining the mineralizer fluorine source and the clinker raw material; a means for loading the pulverized blended raw material into a kiln for firing, and loading the mineralizer sulphur source into the kiln; and a means for supplying fuel to the kiln; and is characterized in that a sample-analysis system is provided for separately collecting the unfired blended raw material and the fired clinker and measuring the amount of fluorine, major components, and free lime according to the type of samples collected, and that the supply amount of fluorine source and sulphur source, and / or the supply amount of the blended raw material, and / or the supply amount of fuel is controlled on the basis of the measurement.

Description

technical field [0001] The present invention relates to a preparation system suitable for reducing the calorific value of cement clinker and capable of obtaining high-quality cement. [0002] this application claims priority based on Japanese Patent Application No. 2011-283114 for which it applied to Japan on December 26, 2011, and uses the content here. Background technique [0003] Most of the thermal energy required in cement production is consumed in the clinker firing process. Therefore, if the firing temperature of the clinker can be lowered, the energy cost can be greatly reduced, and it can also contribute to the reduction of CO 2 emissions. [0004] Usually, ordinary Portland cement clinker is prepared by firing the blended raw materials to above 1450° C. in a rotary kiln. In this clinker firing step, in order to lower the firing temperature, the following measures have been considered conventionally. [0005] (a) By changing the composition of clinker and incre...

AI Technical Summary

Problems solved by technology

At this time, in the measurement of the amount of fluorine, if the sample is made into a molten bead, accurate quantification cannot be performed because the fluorine is diluted and volatilized. In addition, in the measurement of the amount of free lime, if the sample is made into a molten bead, However, due to the deterioration of clinker minerals, accurate quantification cannot be carried out

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