Processing of Powders and Processing Equipment

Neikov, Oleg D.

doi:10.1016/b978-0-08-100543-9.00014-2

Cited by 5 publications

(2 citation statements)

References 14 publications

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“…[1][2][3] Mixing is blending process of two or more different powder type by using natural segregation effect to form a homogenous final product. In this process, filling rate, mixing time, and mixing speed become the crucial aspect that will affect the mixtures homogeneity [4][5]. Mixing speed gives influences on the mixing process to form the centrifugal force that will lead to flow rate on powder mixture resulting in homogeneous mixture [6].…”

Section: Introductionmentioning

confidence: 99%

Optimization of Mixing Speed Parameter for Homogeneous Cu-Sn Composite

Widyastuti

Kurniawan

Sa'di

et al. 2023

KEM

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The crucial manufacturing process in powder metallurgy (PM) is the mixing process. This process ensures blending sufficiently to achieve a uniform and consistent product. Various mixing parameters provide an impact on product properties and fluency during the mixing process. The mixing speed is the most considered parameter which affects the homogeneity and properties of the PM product. The powder of 89,95% wt Cu and 10%wt Sn was mixed at 14, 22, 30, 38 rpm respectively for 120 minutes using a double cone mixer to obtain homogeneity pow-der mixture at 40% filling rate mixer. The mixed powder was compacted at 700 MPa in the 4-column compacting machine. Green compact product was sintered at 200°C for 20 minutes. Sintered specimens were investigated on densification and hardness test. The microstructure was investigated by SEM/EDX and X-ray diffraction. The result showed that the Cu particle form to flake shape, while the Sn particle tends to form irregular rod-like. Particle size on Cu-Sn composite most being finer along with increasing mixing speed. Homogenously distributed dispersed Cu and Sn particles can be achieved successfully at 30 rpm. Furthermore, the hardness test value was 94,2 HRF. The density was 7,45 g/cm3 and the porosity was 15,19% Particle size decrease to 4.517 μm with increasing mixing speed.

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Section: Introductionmentioning

confidence: 99%

Optimization of Mixing Speed Parameter for Homogeneous Cu-Sn Composite

Widyastuti

Kurniawan

Sa'di

et al. 2023

KEM

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“…16,17 Numerical and experimental studies on mixing behavior of Venturi jet, such as geometry optimization, 18 device design, 19,20 and mixing hydrodynamics, 21 have received considerable attention in recent years. Air-mixing is another standard method to mix fluid, gas, or powder through the blower and pump, 22,23 which has been widely used in the fuel-/ air-mixing apparatus, 24,25 ventilation systems, 26 and aerodynamic simulation. 27 Many scholars 28,29 have studied the mixing characteristics of jets under different exit shapes.…”

Section: Introductionmentioning

confidence: 99%

Numerical Simulation of Polymer Dispersion Systems for Polymer Injection on Offshore Platforms

Wang

et al. 2020

ACS Omega

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Because of the limited space and high cost of offshore platforms, the dispersion and dissolution of the polymer are required to be of high efficiency, which is essential for polymer injection to enhance hydrocarbon recovery. The numerical simulation models of the water–powder mixing process by Venturi jetting and air-mixing were established. The multiphase flow fields in the water jet ejector, water–powder mixing head, and stirring tank were numerically simulated by FLUENT. Then, the distributions of velocity, volume fraction, pressure, and turbulent kinetic energy of each phase were obtained to evaluate the effects of polymer dispersion and the dissolution of the two mixing methods. According to the maximum velocity of the mixture at the Venturi jet, the optimized length of the throat is 25 mm in our models. The results of the air-mixing process show that a 120° angle of support rods has the best effect of water–powder mixing. The results of the present study show that compared with air-mixing, the combination of Venturi jet and the stirring tank can obtain a broader agitation range and more extensive effect on the flow field, which could uniformly disperse the polymer powder into water. This study has a guiding significance for the design of the onsite polymer injection process.

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A new approach to evaluate mixing time in a V-type powder mixer: Taguchi weighted grey relational analysis

Gürmeriç,

Doğan

2023

Eur Food Res Technol

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Processing of Powders and Processing Equipment

Cited by 5 publications

References 14 publications

Optimization of Mixing Speed Parameter for Homogeneous Cu-Sn Composite

Optimization of Mixing Speed Parameter for Homogeneous Cu-Sn Composite

Numerical Simulation of Polymer Dispersion Systems for Polymer Injection on Offshore Platforms

A new approach to evaluate mixing time in a V-type powder mixer: Taguchi weighted grey relational analysis

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