Project

Classification of Particle Size Density for Cement Production

Publisher

Companies / Organizations

Location

Greater Copenhagen area

The final step in cement production is the grinding of clinker with gypsum and supplementary materials (blast furnace slag, fly ash…).

Clinker is an intermediate product, formed in a rotary kiln at 1450°C. The particle size distribution of the clinker depends on the conditions in the rotary kiln. As many different fuels are used, kiln conditions can change quickly and therefore the particle size distribution of the clinker. Of course the particle size distribution (PSD) of the clinker has an effect of the mill, where the clinker is ground together with gypsum to a PSD < 45 µm. In order to ensure a reliable and smooth mill operation it is of particularly interest to have an information of the PSD of the incoming clinker. With these information the operator can choose the optimal settings of the cement mill to maintain a homogenous product quality and a high throughput.

An automated image recognition of the PSD of the clinker would be a huge benefit as these data can be supplied to the process control of the cement mill and the necessary parameters can be adjusted automatically.


Download PDF for sample images.

Requirements

Computer vision

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Technical University of Denmark

For almost two centuries DTU, Technical University of Denmark, has been dedicated to fulfilling the vision of H.C. Ørsted – the father of electromagnetism – who founded the university in 1829 to develop and create value using the natural sciences and the technical sciences to benefit society.


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