Sedush V. Development of theoretical bases of account and perfecting construction of a aeration feeder for injected systems of processing of metallurgical melts

Research object - aeration feeder of powder materials for out-furnace treatment of metallurgical melts. Purpose of work - development of theoretical bases of account and perfecting construction of a aeration feeder of injected systems which make for processing of metallurgical melts. Researc methods - theoretical, experimental and physical methods with use tensomeasuring in a complex with an analog-to-digitial converter and computer; methods of mathematical statistics and means of computer facilities for processing experimental data. The new outcomes of theoretical and experimental researches are obtained for a solution of a problem increase of an precision of dosage and uniformity of issue of powder materials by aeration feeder which is used in injected systems for processing of metallurgical melts. The construction and method of account of aeration feeder with the injection camera is developed which ensures regulation of productivity of feeder in a range 1 … 4, precision of dosage of powders at a level 1-1,5 % and uniform of their issue 0,5 %. The dependence of square of dosing orifice in function of an precision of dosage is established. The dependence for definition of a distance from a shear of the nozzle of working gas prior to the beginning the camera of merging of an injector is obtained, for want of which the issue of powder reactants in the pneumotransport pipeline is ensured uniform. The regularity of interaction of a horizontal axisymmetrical jet of working gas with a powder in the injection camera of aeration feeder is established. Is developed and is made a trial sample of aeration feeder with the injection camera, which is maintained in industrial conditions. Area of use - design and research organizations, metallurgical enterprises, and educational institutions.