Solidification of melt

In Madejski s full model,l401 solidification of melt droplets is formulated using the solution of analogous Stefan problem. Assuming a disk shape for both liquid and solid layers, the flattening ratio is derived from the numerical results of the solidification model for large Reynolds and Weber numbers ... 

The drying of solutions and the solidification of melts form an integral part of many of the size enlargement methods discussed in other chapters of this book. These are common mechanisms to harden agglomerates and prepare them for further processing and use. A number of the machines men-... 

Formation of bead-like particles typical in solidification of melt droplets see also Prilling). 

The formation of spherical particles by solidification of melt droplets. 

Figure 24 Chondrite-normalized abundances of REEs in a wall-rock harzburgite from Lherz (dotted lines— whole-rock analyses), compared with numerical experiments of ID porous melt flow, after Bodinier et al. (1990). The harzburgite samples were collected at 25-65 cm from an amphibole-pyroxenite dike. In contrast with the 0-25 cm wall-rock adjacent to the dike, they are devoid of amphibole but contain minute amounts of apatite (Woodland et al., 1996). The strong REE fractionation observed in these samples is explained by chromatographic fractionation due to diffusional exchange of the elements between peridotite minerals and advective interstitial melt (Navon and Stolper, 1987 Vasseur et al., 1991). The results are shown in (a) for variable t t ratio, where t is the duration of the infiltration process and t the time it takes for the melt to percolate throughout the percolation column (Navon and Stolper, 1987). This parameter is proportional to the average melt/rock ratio in the percolation column. In (b), the results are shown for constant t t but variable proportion of clinopyroxene at the scale of the studied peridotite slices (<5 cm). All model parameters may be found in Bodinier et al. (1990). As discussed in the text, this model was criticized by Nielson and Wilshire (1993). An improved version taking into account the gradual solidification of melt down the wall-rock thermal gradient and the isotopic variations was recently proposed by Bodinier et al. (2003).

Beading [n.] Formation of bead-like particles typical in solidification of melt droplets. (See also prilling, pastillation, melt solidification.)... 

The formation of spherical particles by solidification of melt droplets. (See also melt solidification, shot forming.) A paddle type mixer usually with open top, single or double shafts, and trough shaped chamber. 

The composition of the alloy depends on the composition of the electrolyte, the reaction conditions, and special additives which favor the precipitation. Just as in the case of solidification of melts, alloys precipitated by the electrolytic method consist of heterogeneous crystallizates, solid solutions, or some intermediate phases. They may differ from the alloys produced at high temperatures. The differences may show up in phase boundaries and in some physical and engineering properties [6]. 

Fig. 26.5 Drop generator for manufacturing solder balls by solidification of melt droplets [20] (Reprinted from [20]. With kind permission from Prof. Chun, MIT, 2010)...

Solidification of melts causes distributions that are used in certain solids. These distributions are fractals. 

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