Расчёт оптимальных параметров вибрационного измельчения и смешения при изготовлении смесей
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Дата
2014
Автори
ORCID
DOI
Науковий ступінь
Рівень дисертації
Шифр та назва спеціальності
Рада захисту
Установа захисту
Науковий керівник
Члени комітету
Видавець
НТУ "ХПИ"
Анотація
Рассмотрены различные подходы к изучению процессов измельчения и смешения в вибрационных мельницах. Весь процесс формализован как сложная физико-механическая система. Качественный анализ процесса измельчения и сопутствующего смешения был проведен с единых позиций всего спектра явлений, начиная с атомарно-молекулярного уровня и кончая промышленными процессами.
Various approaches to the mathematical description of the grinding process have been examined in the article. The power approach. The calculated energy, changing a medium-sized ground down particle is con-nected with the energy being brought to the grinding aggregate. The second approach concerns with the math-ematical description of kinetic curves in a function of medium-sized ground down particles and grinding peri-od. The third approach is related to probabilistic estimations of possible hitting of particles in the "working area" of grinding aggregates and with the function of close probability of destruction of particles, without tak-ing into account physical and mechanical properties of ground down particles. The fourth approach to the study of the grinding process is connected with the use of notions of fractal geometry. A measure of the quality of the mixture selected parameters characterizing the distribution of the random variables – laws of the concentration distribution: variance, correlation time, standard deviation. The mean square fit of the experimental and calculated model values of the variance components of the mixture does not exceed 15 %.
Various approaches to the mathematical description of the grinding process have been examined in the article. The power approach. The calculated energy, changing a medium-sized ground down particle is con-nected with the energy being brought to the grinding aggregate. The second approach concerns with the math-ematical description of kinetic curves in a function of medium-sized ground down particles and grinding peri-od. The third approach is related to probabilistic estimations of possible hitting of particles in the "working area" of grinding aggregates and with the function of close probability of destruction of particles, without tak-ing into account physical and mechanical properties of ground down particles. The fourth approach to the study of the grinding process is connected with the use of notions of fractal geometry. A measure of the quality of the mixture selected parameters characterizing the distribution of the random variables – laws of the concentration distribution: variance, correlation time, standard deviation. The mean square fit of the experimental and calculated model values of the variance components of the mixture does not exceed 15 %.
Опис
Ключові слова
вибрационные мельницы, оптимальные параметры, кинетическая кривая, физико-механическая система, vibration grinding, mixing, optimal parameters
Бібліографічний опис
Орлова Н. Д. Расчёт оптимальных параметров вибрационного измельчения и смешения при изготовлении смесей / Н. Д. Орлова // Вестник Нац. техн. ун-та "ХПИ" : сб. науч. тр. Темат. вып. : Химия, химическая технология и экология. – Харьков : НТУ "ХПИ". – 2014. – № 52 (1094). – С. 79-87.