Spray-dried plasma

Instead of an electronic furnace, an r.f. inductively coupled plasma (ICP) is also used to generate high temperatures. This method is named a spray lCP technique and has been applied for a wide variety of oxides.Another variation of the spray pyrolysis is the spray- drying method that uses slurry or sol of metal... 

Spray drying Flame spraying Plasma spraying Vapor phase (CVD)... 

SOMP, PDMP - spherically shaped particles produced by spray drying, atomization, and plasma... 

The effects of added poultry fat and type of binder on the texture of cooked chunks were investigated by Polo et al. (2007). Figure 11.5 illustrates the relationship between the hardness of the chunk and the poultry fat content for a recipe containing spray-dried animal plasma (SDAP) and WG as the binders. The resnlts showed that the hardness of the chunk decreased with an increase in the level of fat addition, indicating that the fat reduced the viscosity of the emulsion. Nevertheless, the hardness of the chunk containing SDAP was greater than that of the chunk containing WG. 

Polo, 1., Rodrignez, C., Rodenas, 1., Morera, S., Saborido, N. 2007. Use of spray-dried animal plasma in caimed chnnk recipes containing excess of added water or ponltry fat. Animal Feed Science and Technology 133 309-319. 

A notable exception is a study by Hesse et al. (2008) who investigated the effect of powder grain size and grain size distribution on the spatial distribution of calcium phosphate phases in atmospheric plasma-sprayed hydroxyapatite coatings incubated in r-SBF (SBF-H, Table 7.8). Coatings were mechanically abraded under dry conditions in steps of 40 pm by abrasive SiC paper, and the newly created surfaces analysed by XRD with Rietveld refinement for their quantitative phase composition. The results of this depth profiling are shown in Figure 6.8. 

C., Meunier, C., and Coddet, C. (2003) Microstructure of plasma-sprayed tita-nia coatings deposited from spray-dried powder. Surf. Coat. Technol., 168 (2-3), 281-290. 

Lu H, Qu Z, Zhou YC (1998) Preparation and mechanical properties of dense polycrystalline hydroxylapatite through freeze-drying. J Mater Sci Mater in Med 9 583-587 Lugscheider E, Weber Th, Knepper M (1991a) Production of biocompatible coatings by atmospheric plasma spraying. Mater Sci Eng 139A 45-48... 

At an industrial applications, the TBC coverings can be produced by thermal spraying method in the air plasma spray (APS) atmosphere, at lowered pressure low pressure plasma spray (EPPS) from APS or by the electron beam physical vapor deposition method (EB-PVD), these are all dry-route processes. By these processes, coatings have different microstructures lamellar microstructure consisting... 

Spray drying is used to dry pharmaceutical fine chani-cals, foods, dairy products, blood plasma, numerous organic and inorganic chemicals, rubber latex, ceramic powders, detergents, and other products. Some of the spray-dried products are listed in Table 9.1, which also includes typical inlet and outlet moisture content and tanperatures together with the atomizer type and spray dryer layout used. 

Amelot, M.P. and Gauvin, W.H., Spray drying with plasma-heated water vapor, Drying 86, Vol. 1, A.S. Mujumdar, ed.. Hemisphere, New York, 1986, pp. 285-290. 

Gauvin, W.H., Novel approach to spray drying using plasmas of water vapor. Can. J. Chem. Eng., 1981, 59(6), 697-704. 

It is reasonable to assume that pressure fluctuation caused by sound waves disrupt the boundary layer at the solid or liquid surface, so they should affect the interphase transfer rates and therefore accelerate drying rates. In fact, a substantial decrease (up to 15%) in the boundary layer thickness has been found when conventional spray-drying of blood plasma was complemented by the high-intensity sound at / = 15 kHz and I = 155 dB (Zayas and Pento, 1975). 

Amelot MP. Spray drying with plasma-heated water vapor. M.Sc. thesis. McGill University. Montreal, 1983. 

Mechanical Solvent wipe or clean by immersion or from the vapour phase Alkaline or acid degreasing Abrasion from pads Grit- or sand-blasting or honing, wet or dry Plasma or corona discharge Plasma spray or other PVD methods... 

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