Showing papers in "Powder Technology in 2021"

TL;DR: In this paper, the authors discuss how the arrangement of fins can affect the charging process and how to find the optimized style of fin to gain the highest performance by using fins over both inner and outer pipes.

TL;DR: In this article, a new adsorbent composite Mn-doped UiO-66/Aminated-graphene oxide (Mn-UiO -66@GO-NH2) was synthesized via solvothermal method and well-characterized by XRD, SEM, EDX, TGA, FT-IR, N2 adsorption/desorption analysis and zeta potential.

TL;DR: In this paper, a description for magnetohydrodynamic effects on the transient rotational flow of Oldroyd-B nanofluids is considered, and the variational finite element procedure is harnessed and coded in Matlab script to obtain the numerical solution of the coupled nonlinear partial differential problem.

TL;DR: In this article, the effect of sodium silicate (SS) as an accelerator on early age mechanical and microstructure properties of coal fly ash backfill was analyzed for a dosage of 0.5, 1 and 1.5 wt% in CCB.

TL;DR: In this article, an experimental study has been carried out to investigate dynamic viscosity (μnf) and thermal conductivity of Cu-SiO2-MWCNT/water ternary hybrid nanofluid (THNF).

TL;DR: In this article, nano-organic palygorskite (O-PAL) was successfully prepared by acid activation and silane modification, together with styrene-butadiene-styrene block copolymer (SBS) modified asphalt, was prepared by melt blending.

TL;DR: In this paper, the authors investigated the variation of the thermal conductivity coefficient of TiO2-Graphene/Water hybrid nanofluid and found that the effect of increase in volume fraction and temperature on thermal conductivities was larger than temperature.

TL;DR: In this paper, the authors investigated the transport of silica powders (SPs), and lead ions (a heavy metal species) in saturated porous media under unsteady flow and variable lead ion injection concentrations.

TL;DR: In this article, a hierarchical porous zeolitic imidazole framework −67@ layered double hydroxide (ZIF-67@LDH) consisting of nanocubes decorated with nanosheets was presented.

TL;DR: In this article, the effects of tube structure, twisted tape hole spacing, and hole shape on the flow and heat exchange characteristics of nanofluids in the tube were systematically researched by numerical simulation.

TL;DR: In this article, the thermal conductivity of graphene nano-sheets (GNs)/ethylene glycol (EG) nanofluid was compared with EG thermal conductivities at 25-70°C and 0.005-0.5% to examine the effects of GNs nanoparticles.

TL;DR: In this paper, the effects of different surfactants, including SDS, PVP and CTAB, with various mass concentrations and temperatures on the stability of hybrid nanofluids are investigated.

TL;DR: In this article, the effects of pH on stability and thermophysical properties of TiO2/water nanofluids are investigated, as well as the performance in heat applications.

TL;DR: In this article, nanoparticle turbulent transportation with installation of helical tape within a solar system was analyzed with the use of increasing radial turbulent fluctuation is main concept of utilizing the turbulator.

TL;DR: In this paper, the effects of various spreader geometries on powder spreading are examined by discrete element method (DEM) and the results show that a compact region in the powder pile exists.

TL;DR: In this paper, the influence of materials and process parameters on layer quality was investigated for laser powder bed fusion (LPBF) using the discrete particle method (DPM), a.k.a. discrete element method.

TL;DR: In this article, the boiling heat transfer coefficient (BHTC) of graphene oxide-water nano-suspension (NS) was quantified in the boiling water transfer regime.

TL;DR: In this paper, metal nanoparticles (copper or silver)-filled carbon nanotubes (Cu@CNT, Ag-CNT) have been synthesized by a simple ultrasonic-assisted impregnation combined with chemical reduction.

TL;DR: In this paper, the effects of nanobubbles and different reagents on the flotation process of this particular hematite, batch flotation tests were conducted with a mechanical flotation cell integrated with a cavitation device that generates nanobbles under different process parameters including corn starch dosage, lime (CaO) dosage, collector dosage, and air flow rate through the nanobble generator.

TL;DR: In this paper, a new hydroxamic acid molecule -sebacoyl hydroxam acid (SHA) was synthesized and characterized for wolframite flotation, and the results of bench-scale flotation experiments showed that the WO3 recovery with 180g/t SHA was 10.05% higher than that with 360 g/t BHA and 300 g/T Pb(NO3)2.

TL;DR: In this article, the authors investigated the flowability of ultrafine-tailings cemented paste backfill (UTCPB) incorporating superplasticizers (SP) and obtained results that the packing density of particles increases significantly with the increase of SP dosage due to the improved particle size distribution of the flocs by de-agglomeration effect of SP.

TL;DR: In this paper, a multi-layer perceptron feed-forward back-propagation artificial neural network and a new mathematical correlation have been developed in order to predict the viscosity of ZrO2/Water nanofluid.

TL;DR: In this article, the authors used one hidden layer and it was optimised by varying number of neurons to find out the coefficients in the proposed correlation using ANN validated experimental results, the estimated data obtained by the ANN model is in good agreement with the experiments.

TL;DR: In this article, the entropy generation and exergy efficiency of nanodiamond+Fe3O4 hybrid nanofluids in a circular tube are inspected experimentally, and the results indicated that the thermal conductivity and viscosity are augmented by 14.65% and 79%, respectively at 0.2% particle loading and 60°C compared to the base fluid.

TL;DR: In this article, the authors discuss various aspects of spray drying such as configurations and functions, drying kinetics, component distribution and particle solidification, and the functionality and behavior of excipients during drying.

TL;DR: The comparison between the performances of PSO-based ensemble models reveals superiority of thePSO-ANFIS compared with the PSo-ANN, and the ANN with three hidden neurons and the ANFIS with nine clusters present the best predictions.

TL;DR: In this article, a two-step method was used to prepare SiO2 nanofluid with mass fractions of 0.5, 1.0, and 1.5%.

TL;DR: In this article, the attachment-detachment process of heavy metal ions and suspended matter (SM) on a quartz sand porous medium (SiO2 particles) in water was investigated.

TL;DR: In this paper, a combination of nonionic and anionic surfactants was used to improve the dust removal efficiency of water spray, and the sedimentation test showed that the dust suppressant solution prepared by SDBS, DSS and CDEA has a good wetting effect on coal dust.

TL;DR: In this article, the stagnation point flow of hybrid Ag-CuO/water nanofluids over the stretching/shrinking sheet was studied, and the Navier-Stokes equations were reduced to the ordinary differential equations with similarity transformation.