Mixing Practices

Hersey, J. A. Ordered mixing A new concept in powder mixing practice. Powder Technol. 11 41-44, 1975. 

P. G. Andersen, Mixing Practices in Co-rotating Twin Screw Extruders, in Mixing and Compounding of Polymers, I. Manas-Zloczower and Z. Tadmor, Eds., Hanser, Munich (1994). 

Nearly linear relationship are observed between the gum mixing energy and the viscosity and between the energy for the complete mixing cycle and the viscosity. This indicates that the gum viscosity is controlling not only the mastication step but also the carbon black incorporation and dispersion stages. This experimental observation is well in line with the theoretical considerations above, and current mixing practice. 

Second, this emphasis on promoting service roles spoke directly to many potential members. Taxonomists rarely lack a service role in their employment. More specifically, Wharton assisted the U.S. Navy in pest identification and control during the war. Schmitt watched innumerable consultancies under way at the U.S. National Museum. In postwar America, professional societies of biologists with service roles dwarfed those with predominantly academic interests. The interest in mixing practical diagnostic taxonomy with discussions of systematic principles also arose in the only newsletter produced by the Society for the Study of Speciation in 1940. ... 

PG Anderson. Mixing practice in corotating twin-screw extruders. In I Manas-Zloczwer, Z Tadmor eds. Mixing and Compounding Polymers. Theory and Practice. Munich Hanser, 1994, p 679. 

Cheremisinoff, N. P., Polymer Mixing and Extrusion Technology , Dekker, New York, 1987. The fundamental concepts of mixing and extrusion are explained, mixers and mixing practices are outlined. 

However, with LNGs having different compositions as well as temperatures, it appears advisable that 100 % mixing practices are adopted during refuelling and refills, to prevent the initial formation of multiple layers of liquid. When the LNG is subsequently pressurised, with zero loss of vapour, there is then no chance of double-diffusive convection leading to spontaneous mixing and rollover between adjacent layers. 

This mixing practice appears to be a requirement for trouble-free storage of LNG under pressure. Complete 100 % mixing will, of course, ensure that normal hot-above-cold, two layer stratification will take place during pressurisation under stable convective conditions. 

So this advisory provision on mixing practice may therefore only apply to static... 

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