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Sinter Process Modelation MPA1.0

Research work 2000

      The sinter processes modeling, MPA 1.0, is an applications developed by MIGRAL specialists in order to analyze and predict the sinter quality in the primary sector of the ironmaking processes.

      1. Granulometric solution field within the standard equilateral triangle;
      2. Ternary diagrams ( isolines, izosurfaces );
      3. ON-LINE recipes prediction;
      4. Determination of chemical composition for mixture concerning recipes from.

      The results supplied by MPA 1.0 are based on statistical analysis, topology, theory of algorithms. The methods to represent isolines/isosurfaces to determine the field of solutions and, generally, also the methodology to approach the prediction processes in the sintering game of ores are personal contributions of the MIGRAL specialists and belongs to the company. The application MPA 1.0 has three user classes internally defined
      The MIGRAL specialists try actually to develop the version MPA 2.0, which has in view:
      ● The involving of technology-class users in the mathematical modeling process of interest index.
      ● Automatic integration possibility of database into database Oracle, Fox-Pro, Informs which exist in the data processing system of the beneficiary.


      Raw materials recipes for sinter processes are settled by laborious researches, pilot and industrial scale experiments, thus leading to optimal alternatives which are kept up for a long time within a stabilized process. Alongside the formation of a raw material stack, based on a previous estimated burdening report are defined both technology and process unfolding under conditions of a given sintering flow.
      The models built up on the base of experiments realized in a pilot installation have an orientate character and can be improved afterwards by industrial data processing.
      The models are built up applying active experiments in sintering pilot pot, their results being statistically processed corresponding to the methodology described by the theory of experiments. The models are checked by tests realized by inspection of statistical criteria (Student, Fisher) concerning their consistency with experimental data in order to reach the function aim.
      The model serving as base of the ternary diagrams generation is the model H.SCHEFFE. The regression coefficients calculation of polynomial with n=3 degree, for all the points on the program corresponding to network nodes {q, n} is realized by help of experimental determinations of dependent variables Y. Determinations are based on the matrix-equation:

      The calculated models are areas within the coordinates factorial space representing the geometric locus of the values of functions (sintering indexes) for every solution chosen as raw-materials recipe.
      In order to apply these models, they are plotted as isolines, which represent levels of the respective function within the real solution field.
      The modeling and plotting function of sintering indexes / parameters by using ternary diagrams become important for industrial practice if they are used as operation means to settling raw-materials recipes.

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