Статті

Зараз показуємо 1 - 4 з 4

Energy parameters of the process of ultrafine grinding og medical and cosmetic components in the bead mill
(2021) Hrininh, Kateryna; Gubenia, Oleksii; Chepeliuk, Olena
The process of ultrafine grinding of components of medicines and cosmetics in a laboratory bead mill is considered. The purpose of the study is (1) to determine the energy parameters of the process of ultrafine grinding of medicinal and cosmetic components in a bead mill, as well as (2) to determine the dependences of changes in technological parameters. A suspension of castor oil and cosmetic pigment in a ratio of 60% oil and 40% pigment was used as a model body. A series of experiments was carried out, where the degree of grinding was determined using a microscope with a built-in camera and software, the temperature was measured with ds18b20 temperature sensors, the power was measured with a three-phase CNFAJ Intelligent Power Meter. When grinding the pigment "red 120" for a period of time from 0 to 45 minutes, the power decreases, the temperature of the "beads-product" system increases, and the particle size decreases. This process occurs most intensively in the first 5 minutes. Most of the energy is spent on the work, which is spent on mixing the system "beads-product", and the work, that is spent on heating the structural components of the product and the parts of the mill interacting with them, which, in turn, depend on rheological properties of the suspension.
Energy parameters of ultrafine grinding of pharmaceutical and cosmetic ingredients in the bead mill
(2020) Hrininh, Kateryna; Gubenia, Oleksii
The energy parameters of the grinding process of the components of pharmaceutical and cosmetic preparations in a bead mill are considered. The purpose of research - to determine the energy parameters of ultrafine grinding of pharmaceutical and cosmetic ingredients in the bead mill. A series of experimenters was conducted where the degree of grinding was measured using USB Digital Microscope and software, the temperature was measured with a TPM-10 electronic thermometer, and the power was measured with a CNFAJ Intelligent Power Meter three-phase wattmeter. As a result of the study, we can conclude that most of the energy is spent on the work of mixing the beadproduct system and the work spent on heating the structural components of the product and the interacting parts of the mill, which, in turn, depend on the rheological properties of the suspension.
Investigation the process of superfine grinding of components of pharmaceutical and cosmetic products on the bead mill
(2018) Hrininh, Kateryna; Hordeichuk, Ruslan; Gubenia, Oleksii
The process of grinding the components of pharmaceutical and cosmetic preparations in a bead mill is considered. The degree of grinding was measured with a "Klin" grindometer, the temperature was measured by a contactless pyrometer, the power was measured by current clamps. The smaller the particle size and the higher density of the suspension, the greater the energy required to conduct the process, and the more heat will be released. When grinding titanium dioxide over a period of 0 to 30 minutes, the power increases from 205 to 209 W, with the most intensive increase observed in the interval from 5 to 10 minutes at 2.33 W. In addition, the temperature of the suspension increases from 21.9 to 23.4 °C, the density of the suspension increases from 889 to 1176 kg/m3, and the particle size decreases from more than 100 μm to 10 μm, the most intensive grinding in the first 5 minutes of the process. When the quinacridone red Red 122 is grinded, the power is increased from 205 to 210 W, the slurry temperature is from 22.4 to 24.3 °C, the density is from 870 to 952 kg/m3, and the particle size decreases from more than 60 μm to 2 μm, while the most intensive grinding occurs in the first 5 minutes of the process.
Comparative analysis of equipment and research the superfine grinding process of titanium dioxide and quinacridone red suspensions in the bead mill
(2018-06) Hrininh, Kateryna; Hordeichuk, Ruslan; Gubenia, Oleksii
Introduction. Analytical and experimental research was conducted to improve the process and equipment for the superfine grinding of medicinal and cosmetic preparations. Materials and methods. On the basis of modern scientific literature and own experience was given a comparative analysis of modern equipment for ultra-fine grinding. In the investigation are used suspensions of titanium dioxide and quinacridone red 122 with the vaseline oil. Results and discussion. Among the recommended installations, the most versatile, productive, compact, energy saving, with high degree for grinding (up to 1 microns), effective in the process of dispersion and homogenization, have a simple constructive solution are bead mills. When grinding titanium dioxide over a period of 0 to 30 minutes, the power increases from 205 to 209 W. The temperature of the suspension is from 21.9 to 23.4 °C, the density increases from 889 to 1176 kg/m3, and the particle size decreases from more than 100 μm to 10 μm. The most intensive grinding in the first 5 minutes of the process. When the quinacridone red 122 is grinded, the power is increased from 205 to 210 W, the temperature of the suspension is from 22.4 to 24.3 °C, the density increases from 870 to 952 kg/m3, and the particle size decreases from more than 60 μm to 2 μm, while the most intensive grinding occurs in the first 5 minutes of the process. Conclusions. Among the recommended installations, the most optimal and productive are bead mills. It is recommended to carry out the grinding process on the bead mills periodically with the circulation of the suspension with the obligatory cooling.

Статті

Переглянути

Фільтри

Налаштування

Сортувати за

Результатів на сторінку

Результати пошуку