ДОСЛІДЖЕННЯ МЕТОДІВ ВИМІРЮВАННЯ ФІЗИЧНИХ ПОКАЗНИКІВ ФАКЕЛУ ДОГОРЯННЯ ДИМОВИХ ГАЗІВ, ЯК ЗАСІБ РОГНОЗУВАННЯ ПЕРЕБІГУ ФІЗИКО-ХІМІЧНИХ ПЕРЕТВОРЕНЬ В ПРОЦЕСАХ ВИПЛАВКИ СТАЛІ

Анотація

The oxygen-converter process is accompanied by the release of a significant amount of off-gases, that under the conditions of postcombustion form a torch over the neck of the converter. Change the torch nature corresponds the peculiarities of the heat blowing. However, it is difficult to register and analyze the torch due to the significant temperature above the neck of the unit and the large amount of dust released during the blowing. The paper presents the results of physical modeling of methods of registration of physical indicators of flame, simulating a single flare, such as heat transfer from a gas torch, luminosity (brightness) in the ultraviolet, visible and infrared spectra and electrical characteristics of the torch. It was indicated the feasibility of using the measurement of electrical characteristics of the gas flare as a parameter to control the process (namely the difference of natural potentials), such as postcombustion, due to efficiency determination, the lack of significant impact on the accuracy of measurement of excess temperature and the degree of dust. Testing of this method on a high-temperature model showed compliance with the registered electrical characteristics of the system “blowing lance - metal bath-body of the unit” of a number of processes that occur during the blowing in the volume of the unit. By comparing the obtained measured indicators with the experimentally established indicators according to the parameters of technology and limit values, it is possible to draw conclusions, depending on their deviation, about the necessity, for example, change the position of the lance to achieve the desired result or perform other corrective operations and achieve the best technological results of the metal smelting.