Abstract. The article examines the software development of peat briquette production. Integrated peat development is one of the important tasks of peat industry. The importance of peat as local raw material increases with the increase in demand for various products. The production efficiency can be improved with new automated peat processing technologies based on advanced engineering. In view of market and technology requirements the peat industry development is hampered by slow development of automated peat processing and utilization technologies. The acceleration of technological progress can be achieved by designing automated lines of advanced peat processing. In accordance with this mission the development of technological process monitoring parameters is of great importance thanks to the possibility of end product physicochemical properties being predicted and managed to make efficient use of peat products for energy needs. The software with an intuitive interface for automated production line of peat briquettes has been developed. This provides means for managing and controlling the peat briquette production process.
Abstract. The article reviews the knowledge assessment software module of electronic teaching and testing in mining specialist training. To develop the software module integrated programming environment state-of-the-art is used. Its advantage consists in small computer resource consumption, simple editing, and protection against the users' trying to find out the correct answers to test tasks. The software makes it possible to learn the ongoing learning information systematically and consistently as well as to assess the current knowledge in mining. The developed module meets the following requirements: a software module user-friendly interface, the storage of passed test results to be used for subsequent viewing, analyses, and evaluation, fast troubleshooting in case of any troubles with a stable module operation, and further software function extension and upgrading.
The article presents the findings of the research in the field of automatic control of peat mass quality in hollow peat pot production. The strength of the finished product determines its integrity and crumblability which affect the loss during drying and transportation. Therefore, knowing the strength characteristics we can use them for quality control. Besides, not strength but heterogeneity in the distribution of pores, moisture, and density is responsible for crumbling. Automatic regulation of effective peat mass water content is one of the main stages determining the quality. At this stage automatic control of the flow, dispersion and water content of peat mass entering the pulper tank as well as measurement and control of the amount of additional elements introduced, such as mineral components, wood pulp, and water to form the required consistency, are provided for. The models of automatic process control are built and analyzed with the methods of differential equation theory, numerical integration, and stability theory. The model is implemented with the custom-made proprietary software. The model adequacy is determined empirically by comparing the data obtained on the model with the actual technological process.
The article discusses the research of peat physical and mechanical treatment which consists in determining technological parameters of peat stock. Size distribution and conditional specific surface area of peat particles are set. The relationship between processing efficiency and the content of peat fractions which size is less than 250 microns is derived. It proves to be linear. Treatment efficiency is found to be estimated by the data of a screen analysis alone and with satisfactory accuracy. Mechanical treatment has an effect on the values of total moisture capacity. The dependence is nonlinear and decreases insignificantly up to the conditional specific surface area of 350 m2/kg due to the partial grinding of fibrous coarse fractions. Mechanical treatment up to the conditional specific surface area of 500 m2/kg results in the sharp decrease of total moisture capacity due to the practically complete destruction of coarse fractions. With that of more than 500 m2/kg the values of total moisture capacity change insignificantly. Multiple peat treatment causes its mechanical consolidation and the reduction of coarse fraction content along with significant increase of fine fraction content.
The article presents the results of the study of a peat deposit development scheme with improved spread parameters. The parameters are improved by forming the spread as moulded particles of a certain shape and size determined by the size of moulding machine grooves and the degree of peat relaxation. To obtain such particles a milling cutter is proposed to be replaced by a moulding mill at the stage of peat deposit milling. When excavated, the peat mass is loosened and fed into a roller moulding machine where the rollers, rotating in opposite directions, capture it and the peat is compressed. The loose structure changes into dense particle-particle packing. The circumferential speeds of roller rotations are equal. A trapezoidal groove profile is chosen for the moulded particles to leave it. The groove depth is 10 mm. The uniformity of the moulded enlarged particle distribution over a drying field is characterized by a spread variation coefficient, which allows the spread quality to be evaluated. The enlarged particle spread is normalized by some cumulative actions characterizing the spread by parameters (the thickness, the average particle size, the size uniformity, the number of layers). Therefore, the drying of enlarged particles is intensified and peat yield per unit area is increased.
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