BRICK FIRING PROCESS CONTROL SYSTEM

В статье приводится описание технологического процесса обжига керамического кирпича в туннельной печи. Приведено обоснование для внедрения автоматизированной системы управления туннельной печью и вариант структуры автоматизированной системы управления. The article describes the technological process of firing ceramic bricks of a tunnel kiln. The rationale for the introduction of an automated control system for a tunnel furnace and a variant of the structure of an automated control system are given.

DEVELOPMENT OF MODERNIZED GAS BURNER DEVICE OF SERIES GS-M FOR TUNNEL KILNS OF CERAMIC BRICK FIRING

On the basis of gas-burning devices of the GS series, new devices have been developed, in which gas channels are installed for operation in the mode of maximum or minimum flame length. This allows to increase the stability of the flame at low temperatures of the working space (below the natural gas ignition temperature), which in turn provides an increase in the economic performance of the tunnel kiln firing ceramic bricks. Bibl. 5, Fig. 2.

Features of the kinetics of mass transfer processes in the process of firing ceramic materials

In article the technique of definition factors of carrying over weight of substance in the course of roasting ceramic materials which is based on exponent dependences of change mass bodies from time of its heating is offered. The process of firing ceramic materials is associated with the transfer of heat and mass of matter. Therefore, for a more complete calculation of the heat treatment mode, it is necessary to know the conditions for the mass transfer in the product being calcined. The aim of the work is to determine the mass transfer coefficients of the substance in the process of firing ceramic materials. The mass loss rate of the bound matter or the mass loss per unit time will be directly proportional to the average mass content of the body. On the other hand, the mass loss rate of the bound matter is numerically equal to the slope of the mass content kinetics curve. Proposed in the work formulas can be applied when studying the process of mass transfer during firing of samples from different clays, as when firing clay samples of different diameters under the same conditions, they will differ in the mass content (mass loss rate of the bound substance) during heating and their final relative amount (mass content) of the lost mass will be the same.

MODERNIZATION OF TUNNEL KILN FOR CERAMIC BRICKS CALCINATION LLC «METEKHIS CERAMICS» (GEORGIA)

Gas-burning devices of SG Series and the system of automatic control of firing ceramic bricks for the tunnel kiln by production of Gas Institute of NAS of Ukraine were mounted at the enterprise LLC «Metekhis ceramics» (Georgia. The analysis of the design features of this type of furnaces was made by the Bulgarian project. The advantages and disadvantages caused by outdated thermal equipment and the lack of aerodynamic parameters of automatic control systems are also considered. The fundamental scheme of the kiln is designed with a new thermo-heating engineering equipment and automatics for thermal and aerodynamic modes regulation The influence of new heating engineering equipment and automatics is considered for the quality of manufactured products, kiln productivity and natural gas specific consumption. Bibl. 5, Fig. 2