Abstract Minimum quantity lubrication (MQL) is a relatively efficient and clean alternative to flooding workpiece machining. Electrostatic atomization has the merits of small droplet diameter, high uniformity size, strong coating, hence its superiority pneumatic atomization. However, as current research hotspot, influence jet parameters electrical on average diameter droplets not clear. First, ...

Grinding is generally carried out in wet conditions, but issues regarding water conservation and high-water treatment costs encourage the application of grinding dry conditions. Both produce products with certain characteristics that affect success next process. P100 6 mesh (3.36 mm) ore was performed using steel ball media 33.33% solids for 5, 10, 15, 20, 25, 30 minutes. Particle size distribu...

Online measurement of particle size distribution in the crushing process is critical to reduce obstruction and energy consumption. Nevertheless, commercial systems determine do not accurately identify large particles (20–250 mm), leading obstruction, increasing consumption, reducing equipment availability. To solve this problem, an online sensor prototype was designed, implemented, validated a ...

Fine and ultrafine grinding of limestone are frequently used in the pharmaceutical, chemical, construction, food, cosmetic industries, however, research investigations have not yet been published on combination energy life cycle modeling. Therefore, first aim this work was examination main parameters particles to determine an empiric energy-model. Dry wet experiments carried out with a Bond mil...

Natural resources in general and plant materials in particular are receiving more attention due to their safety as pharmaceutical excipients. Present work assessed the combination potential of natural hydrophobic resin, rosin, and synthetic polymer ethyl cellulose to mask the abhorrent inherent taste of ambroxol hydrochloride, by microencapsulation technique, and its possibility to formulate as...

The determination of Eruptive Source Parameters (ESPs) is a major challenge especially for weak volcanic explosions associated with poorly exposed tephra-fallout deposits. In such case, the combination deposit analyses and remote sensing observations can provide fundamental insights. We use 29 August 2011 paroxysm at Mount Etna (Italy) as case study to discuss some challenges multi-disciplinary...

A swirling pulverized coal flame is computationally investigated. Eulerian–Lagrangian formulation used to describe the two-phase flow. Turbulence modelled within a RANS (Reynolds averaged numerical simulation) framework. Four turbulence viscosity- (TV) based models, namely standard k-ε model, realizable renormalization group theory and shear stress transport k-ω model are used. In addition, Rey...

The properties and advantages of axial flow cyclones are presented; several dozen them already widely used as the first stage inlet air filtration in internal combustion motor vehicle engines, work machines helicopters. necessity to conduct research on improve separation efficiency has been demonstrated. Using commercial engineering software Ansys Fluent, at a constant velocity 10 m/s, an asses...