Alex v. E. Conradie

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A ball mill grinding circuit is a nonlinear process characterised by significant process interaction, as a typical manipulated variable interacts with multiple controlled variables. To facilitate an accurate representation of the complex process dynamics, a rigorous ball mill grinding circuit is simulated. The dynamic model is used in its entirety for the(More)
Process changes, such as flow disturbances and sensor noise, are common in the chemical and metallurgical industries. To maintain optimal performance, the controlling system has to adapt continuously to these changes. This is a difficult problem because the controller also has to perform well while it is adapting. The Adaptive Neural Swarming (ANS) method(More)
ii DECLARATION I, the undersigned, hereby declare that the work contained in this thesis is my own original work and has not previously in its entirety or in part been submitted at any university for a degree. iii Now to Him who is able to keep us from stumbling, And to bring us faultless Before the presence of His glory with exceeding joy, To God our(More)
The efficiency of mineral processing operations, i.e. concentrating raw ores for metal extraction, impacts significantly on the operating cost of the final metal products. First, valuable minerals are liberated from the ore matrix in a comminution circuit, comprised of grinding (e.g., ball mills) and classification (e.g. hydrocyclones) units. The liberated(More)
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