Method for representing high-phosphorus iron ore dynamic reaction stage

Abstract

The invention relates to the technical fields of metallurgical engineering and statistics, in particular relates to a method used for judging and representing a high-phosphorus iron ore reduction dynamic reaction stage. The invention is mainly applied to deconstruction of the high-phosphorus iron ore reduction dynamic reaction stage. The method comprises the following concrete steps: (1) placing a sample obtained by mixing high-phosphorus iron ore and a coal dust cosolvent on a thermogravimetry analyzer to perform a dynamic experiment; (2) extracting a differential thermal scanning calorimetric curve after the experiment is finished; (3) discretizing the curve obtained in (2) to form a time sequence, and importing the time sequence into VRA (visual recurrence analysis) software for analysis; and (4) judging the dynamic stage according to image features. The invention is applied to judging the high-phosphorus iron ore reduction dynamic stage, the method is simple and convenient and has high practical value, and a practical and reliable judging and representing method is provided for production practice and control on smelting of the high-phosphorus iron ore.

Description

technical field [0001] The invention belongs to the technical field of metallurgical engineering and statistical technology, in particular to a judgment and characterization method suitable for the reaction stage of the reduction kinetics of high phosphorus iron ore. Background technique [0002] Metallurgical process dynamics is an engineering theoretical discipline that uses the theories and methods of chemical reaction engineering to study the rational design, optimal operation and optimal control of metallurgical processes and reaction equipment. It analyzes various characteristics of the metallurgical process on the basis of metallurgical process kinetics and transport theory, seeks the relationship between the main parameters in the process, and finds out its mathematical expression (mathematical model); according to various assumptions and experiments Conditions, use the computer to solve the quantitative relationship between the parameters, so as to determine the opt...

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Problems solved by technology

The metallurgical process involves extremely complex multiphase reactions, the testing methods at high temperatures are not yet complete, the information obtained is difficult to be accurate and stable, and intermediate products and metal products are often accompanied by segregation, harmful impurities, non-metallic inclusions, and surface and crystal defects Such problems make it difficult for the existing metallurgical reaction engineering theory to conduct correct and systematic analysis and research on these particularities.

At this stage, the traditional data of experience is still used to design metallurgical reaction equipment, and there are many problems to be studied and solved for the optimal operation and comprehensive automatic control of the existing metallurgical process system and equipment

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