Investigation of the dispersion processes of composite colloidal capillary-porous materials


  • Zh.O. Petrova Institute of Engineering Thermophysics of NAS of Ukraine, str. Bulakhovskogo, 2, Bldg. 2, Kyiv, 03164, Ukraine http://orcid.org/0000-0001-7385-8495
  • V.M. Vyshnievskyi Institute of Engineering Thermophysics of NAS of Ukraine, str. Bulakhovskogo, 2, Bldg. 2, Kyiv, 03164, Ukraine http://orcid.org/0000-0002-2424-8102
  • Yu.P. Novikova Institute of Engineering Thermophysics of NAS of Ukraine, str. Bulakhovskogo, 2, Bldg. 2, Kyiv, 03164, Ukraine http://orcid.org/0000-0002-6705-1000
  • A.I. Petrov Institute of Engineering Thermophysics of NAS of Ukraine, str. Bulakhovskogo, 2, Bldg. 2, Kyiv, 03164, Ukraine http://orcid.org/0000-0003-4851-3115
Keywords:
composite colloidal capillary-porous materials, grinding

Abstract

The technology of drying colloidal capillary-porous materials to a final humidity of 6-8%, developed at the Institute of Technical Thermophysics of the NAS of Ukraine, allowed to obtain a brittle state, in which it is possible to grind this product to small particles.

The most suitable for industrial grinding of the dried composite colloidal capillary-porous materials is the impact method, because when wiping and crushing the material has accumulated, stuck to the working surface.

Powders are characterized by one pronounced maximum corresponding to the particle size of the powder of 0,16 mm. As the rotation speed of the shredder rotor changes, the particle size distribution of 0,16 mm increases by reducing the larger particles.

The amount of powder thus obtained is directly proportional to the speed of rotation of the rotor. The study of the dispersion and classification of functional powders showed that all powders have the largest particle size of 0,16 mm. The maximum yield of this fraction is 70% and the lowest is 40%.

The structural-mechanical characteristics of powders from composite colloidal capillary-porous materials were investigated for the first time.  Characteristics of different fractions were determined by such parameters as bulk density, vibration density, angle of natural slope, speed of material flow through the funnel and others.

Studies to determine the structural and mechanical properties of functional powders have shown that they can be attributed to more bulk powders, as opposed to highly bound monopowders.  Creating compositions improves their structural and mechanical properties.

References

1. Снежкин Ю.Ф., Боряк Л.А. Исследование процессов диспергирования сухих растительных материалов. Промышленная теплотехника, 1982, №4, С. 43 – 45.

2. Снежкин Ю.Ф., Боряк Л.А., Акинфиева Л.Л., Демченко В.В. Влияние пара-метров диспергирования и сепарации на дисперсный состав пищевых поро-шков из растительного сырья. Пищевая промышленность, 1985, № 11, С. 33 – 34.

3. Бауман В.А. Механическое оборудование предприятий строительных материалов, изделий и конструкций. В.А. Бауман. М.: Машиностроение, 1981. 332 с.

4. Боровський В.Р. Изучение условий дробления и хранения порошков из яблок и яблочных выжимок. Промышленная теплотехника. 1982. № 5. С. 43 – 45.

5. Петрова Ж.О., Пазюк В.М., Перепеличний О.В. Дослідження процесу подрібнення та класифікації функціональної пребіотичної сировини. Збірник наукових статей «ХVІ Міжнародної науково-практичної конференції «Вдосконалення процесів і обладнання харчових і хімічних виробництв» Одеської національної академії харчових технологій. Мін. Освіти і науки України. Одеса: 2016.

6. Зимон А.Д. Аутогезия сипучих материалов Зимон А.Д., Андрианов Е.И. М. Металургія. 1977. 287с.

7. Андрианов Е.И. Методы определения структурно-механических характеристик порошкообразных материалов. М.: Химия.1982. 256с.
Published
2019-12-27
How to Cite
Petrova, Z., Vyshnievskyi, V., Novikova, Y., & Petrov, A. (2019, December 27). Investigation of the dispersion processes of composite colloidal capillary-porous materials. Ceramics: Science and Life, (4(45), 21-25. https://doi.org/10.26909/csl.4.2019.3