A computerized concrete raw meal analyzer using a D-D neutron generator

This paper introduces a fast, real-time, on-line cement raw meal analyzer. The analyzer uses prompt gamma neutron activation analysis (PGNAA) technique with a low-cost D-D neutron generator that can give stable neutron yield. A computer system controls the measurement and data analysis process. It is much faster in analyzing the main ingredients of cement raw meal than those analyses using conventional chemical methods. The analyzer retains the advantages of the newer type of analyzer that uses the PGNAA technique with radioactive isotopes as their neutron sources. However, by using a D-D neutron generator as the neutron source, our analyzer has eliminated the potential health and environment hazards caused by the analyzers that use radioactive isotopes as their neutron sources. Therefore it is much safer for the instrument operators and the environment. The rapid measurement and accurate analysis of the main ingredients of cement raw meal in cement production process enable it to be a real-time on-line measurement system. The experimental results from on-site tests in three cement companies have shown very promising potential.