Method for determining oxide component content of cement raw meal by near infrared diffuse reflection spectrum

A technology of near-infrared spectrometer and cement raw material, which is applied in the direction of material analysis through optical means, material analysis using wave/particle radiation, and measuring devices, etc. It can solve the problems of large fluctuations in cement quality, long time consumption, and adjustment of raw material ratio. Hysteresis and other problems can be eliminated to achieve the effects of eliminating noise and useless information, accurate measurement results, and improving prediction performance
CN109085136AActive Publication Date: 2018-12-25SHANDONG UNIV +1
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
SHANDONG UNIV
Publication Date
2018-12-25

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Abstract

The invention discloses a method for determining oxide component content of cement raw meal by near infrared diffuse reflection spectrum. The method comprises the following steps of: determining the main oxide component content of the collected cement raw meal sample by adopting an X-ray fluorescence method to obtain the standard of each sample component; dividing the whole cement raw meal sampleinto a calibration set and a verification set to obtain the near infrared diffuse reflection spectrum thereof; performing smoothing processing on the near infrared diffuse reflection spectrum, establishing a calibration model by adopting a cooperation interval partial least square method, and determining the relation between the each sample content and the near infrared diffuse reflection spectrum; and performing external verification on the calibration model by using the verification set sample, comprehensively judging the model performance based on the calibration set correlation coefficient, the cross validation root mean square error, the verification set correlation coefficient, and the predicted root mean square error, and analyzing the correlation between a predicted value and a real value.
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Description

technical field

[0001] The invention relates to a method for measuring the content of oxide components in cement raw meal by near-infrared diffuse reflectance spectroscopy. Background technique

[0002] Cement is an indispensable basic material in modern economic construction, and its quality is closely related to the safety of human life and property. In the cement production process, the ratio of various raw materials (clay, limestone, steel slag, etc.) directly determines the quality of cement. Cement is mainly composed of CaO, SiO 2 、Al 2 o 3 and Fe 2 o 3 Therefore, in industrial production, it is necessary to control the ratio of raw materials by detecting the content of these oxides in cement raw materials to ensure the quality of cement.

[0003] Chemical analysis method and X-ray fluorescence method are commonly used inspection methods in the cement industry. The process of chemical analysis method is complicated and time-consuming. X-ray fluorescence method mu...

Claims

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