With its high penetrating power, neutron analysis is a method of analysis which is particularly well suited for on-line real-time measurement.
For over 15 years, SODERN has been supplying on-line systems for the real-time elemental analysis of bulk raw materials moving on a conveyor belt.
Unlike conventional analysers which use a continuous-emission isotopic source, the on-line analyser made by SODERN – the CNA (Controlled Neutron Analyser) – uses an electrical neutron source with stabilised emission and can be switched off at any time.
The CNA is composed of a measuring chamber, to which is attached an electrical box which uses digital signal processing technology, and an operator interface. The CNA's measuring chamber is installed around the conveyor belt and analyses the composition of the material. It comprises a neutron emission unit and a gamma detection unit installed either in the upper or lower part of the chamber, depending on the characteristics of the material to be analysed. The CNA is interfaced with a high-performance automatic system which makes it possible to both measure and control the chemical composition of the raw materials and adapt the manufacturing process. It is widely used to control and optimise various manufacturing processes, in particular those used by cement manufacturers, the mining industry, thermal power plants and waste treatment plants.
In March 2010, SODERN signed an exclusive distribution agreement with PANalytical for the worldwide sale and maintenance of Sodern's CNA, covering the needs of the cement, coal and minerals industries. PANalytical is the world's leading supplier of instrumentation, software and automatic solutions for X-ray diffraction and X-ray fluorescence spectrometry. The unique PFTNA (Pulsed Fast & Thermal Neutron Activation) technology combined with PANalytical's wide global coverage will provide our clients with a comprehensive range of products and services as well as optimum technical support from the local teams.
CNA and the cement industry
The Cement CNA is installed at source between the first crusher and the pre-homogenisation stockpile, or before the raw mill for the blending of raw mix. Controlling the raw materials makes it possible to optimise the composition of the mix before the kiln operations.
The Cement CNA directly contributes to:
Those are but a few numerous advantages of the Cement CNA in the cement-making process.
So far, over 70 SODERN on-line analysers have been installed and approved by leading cement manufacturers.
On-line analysers are also widely used for coal, notably in thermal power plants, mines, gasification plants and sometimes in coke plants where measuring the chemical composition of the coal is indispensable for the process.
With its electrical neutron source and the PFTNA technology, the Coal CNA made by SODERN is the only analyser on the market capable of directly measuring on-line and in real time all the major elements of coal, including carbon and oxygen.
Through this comprehensive elemental analysis, the coal CNA can define the main characteristics of the coal including total ash, calorific value (BTU), ash viscosity, volatile elements, etc.
With its electrical neutron source and the PFTNA technology, the Coal CNA made by SODERN is the only analyser on the market capable of directly measuring on-line and in real time all the major elements of coal, including carbon and oxygen. Through this comprehensive elemental analysis, the coal CNA can define the main characteristics of the coal including total ash, calorific value (BTU), ash viscosity, volatile elements, etc.
Unlike Cf252 analysers, the coal CNA can be installed directly on the main conveyor belt as its measurement is not affected by coal density variations and because it can analyse all types of coal.
The coal CNA is mainly used for the following applications:
The robust Minerals CNA produced by SODERN and featuring PFTNA technology is making its way into the mining industry for the analysis of nickel, copper and iron, in the aim of improving processing efficiency and profitability.
The minerals CNA can be used for:
These are but a few of the numerous advantages offered by the Minerals CNA in the mining process.