Fluxes melting process

As discussed in Chapter 5, the solids-conveying rate for a specific screw is directly proportional to screw speed. That is, if the screw speed is increased by a factor of two the solids-conveying rate will nearly double. The melting flux of the screw as measured in kg/(h-m2) at the barrel wall, however, will not increase at the same rate. Typically, the melting flux will increase by 40% for a doubling of the screw speed [1]. In order to complete the melting process, additional area at the... 

The melting process for a resin is complex and depends on many parameters, including screw speed, screw geometry, barrel temperatures, and channel pressures. Moreover, the compression ratio and compression rate also affect the pressure in the channel. The melting flux is known to increase with increasing pressure in the channel [1,12]. A series of Maddock solidification experiments were performed at... 

A major problem which awaits clarification concerns the detailed nature of the borate crystal growth processes from the melts and fluxed melts. From this point of view, it... 

Fig. 2. Reservoirs and fluxes used in previous and present modelling work (not to scale). Rectangles used for reservoirs ellipses for loci of fractionation by melt processes, m-f, depleted mantle melting, oceanic crust (MORB) formation s-f, subduction zone melting leading to continental crust formation c-f, intracrustal fractionation leading to upper and lower crust formation. Bold arrows, fluxes involving trace element fractionation line arrows flirxes without trace element fractionation stippled arrows, fluxes operating only during accretion and core formation.

Unlike Mars the mantle of Earth is hot enough to produce copious melt if a small amount of water is present water fluxes melting and is driven out with the melt, to collect in the ocean-atmosphere system, where it is the most important greenhouse gas. The process is self-managing to an extent. If for some reason the surface became very cool, as time went on the cold dense surface plate would founder. This would carry down water. If so, the water in the... 

Aluminum-melting furnaces are often fired with regenerative burners (fig. 5.26), but care is necessary to prevent fouling the regenerative beds with carry-over from the melting process such as flux, oxides, and aluminum droplets (an operational mistake). 

Hthium carbonate is used as fluxing agent added to potline in the Hall-Heroult aluminum melting process ... 

---