Disk separators

In order to investigate the chemical and age properties of the thin and the thick disks separately we have performed the deconvolution of their velocity distributions. We show that about 25% of the sample has kinematics typical of the thick disk, adopting for its parameters V ag = — 51km s 1 and (<7u, v, w) = (63, 39, 39) km s-1. Stars having a probability higher than 80% to belong to the thin and thick disks were selected. Plots on Fig.l show nicely the... 

Heavy duty Standard duty Multiclone Disk separators Filters... 

His "Voltaic pile", a stack of zinc and silver disks separated by a wet cloth containing a salt or a weak acid solution, was the first battery known to Western civilization. 

Count each half of the disk separately 10 times for 5 minutes each. 3-98. Count both halves together 10 times for 5 minutes each. 

Luigi Galvani (1791) was the first to discover the physiological action of electricity. He demonstrated the existence of bioelectric forces in animal tissue. His experiments led Alessandro Volta to the invention of the first battery, voltaic pile [8]. In 1800, Alessandro Volta described the voltaic pile in a letter to the Royal Society in London [7]. The original voltaic cell used two metal disks as electrodes, namely zinc and silver. Cardboard disks separated the electrodes and seawater was the electrolyte. A current was produced when the silver disk was connected to the zinc disk through an external wire. The voltaic pile established the foundation for the liquid battery type. Many other metals and electrolytes have been tried during the last two centuries [9]. 

Differential ring element on circular disk to opposed coaxial ring element on coaxial disk separated by coaxial cylinder... 

Continuous separations are performed in mixer-settlers (most common apparatus), in extraction columns with or without pulsation, in special constructions such as ro-tating-disk separators. 

Separation of chromic acid residues from the oxidation product is carried out continuously today by a disk separator. Zirconium is the only construction material that can be considered in view of the highly corrosive properties of the medium. A disk separator of zirconium has been developed specifically for this purpose in cooperation with an engineering company. This gives both an improvement in product quality by reducing the chromium content of the oxidation product and a saving of sulfuric acid for the washing processes. The sodium sulfate content of the wastewater is thus reduced by 13 kg per tonne of acid wax. 

The parallel plate system is depicted in Fig. 18. It consists of two parallel disks separated by an adjustable distance h. ITie sample is contained between the plates, while the upper plate rotates. For Newtonian fluids, the measured torque is related to the Newtonian shear stress, ts. by means of the following expression. 

Our own work d involved measurement of potentials developed by exposure of NASICON to H2 at different pressures in a gaseous concentration cell. The NASICON was prepared both by the sol-gel method and the hydrothermal route. Pressed sintered disks were then prepared which were approximately 1.27 cm ( ") in diameter and 1 mm thick. The disk separated two chambers, one of which contained Nj at 1 atm and the other Hj. The potential of this cell was measured on open circuit as a function of hydrogen pressure and the results at 25 °C are plotted in Fig. 15.4. The slope of the line is close to that expected for Nernst type behaviour. At elevated temperatures, the voltage increased considerably but large deviations from Nernstian behaviour were observed presumably due to conduction of the sodium ions. These results are comparable to those obtained with P-alumina . By applying a potential across the... 

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