Mixing and homogenization

It is recommended to use a borer of diameter greater than 5 cm to avoid column compaction. The sediment columns are mixed and homogenized and a subsample is taken for laboratory analysis. To investigate the vertical distribution of a chemical for... 

Krambrock, W., Mixing and Homogenizing of Granular Bulk Material in a Pneumatic Mixer Unit, Powder Technol., 15 199 (1976)... 

Although the full history of this screw is unknown, the mixing pins appeared to have been added to the screw after the screw failed to mix and homogenize the extrudate. Pin mixers have been retrofitted to screws for many years as a way to improve the distributive mixing for an extruder. Here the pin mixers would distribute the solid polymer fragments evenly in the extrudate, hut the mixers lacked the ability to trap and disperse them. Pin mixers were clearly the wrong type of mixer to use for this application. Instead, a dispersive mixer such as a Maddock-style mixer would be preferred see Section 8.5.1. 

Along the screw of an extruder both transport flow and transverse flow occur. The latter provides a circulation flow, which promotes mixing and homogeneity. 

Add step 3 into step 2 at 30°C. Mix and homogenize for 5 minutes at high speed under vacuum... 

Mix well add to mixer. Mix and homogenize for 10 minutes under vacuum 0.5 bars. 

Finally mix and homogenize for 5 minutes at mixer speed 18 rpm, homogenizer at high speed, vacuum 0.4 to 0.6 bar. 

Transfer the dispersion from step 3 and 4 into mixer. Mix and homogenize under vacuum 0.4... 

Dissolve item 11 in 15.0 g of item 16 (25° to 30°C) in a stainless steel container while stirring by stirrer. Add to mixer while mixing. Add items 13 and 12 into mixer while mixing. Homogenize high speed, and vacuum 0.4 to 0.6 bar. Mix and homogenize for 10 minutes. Dissolve item 14 in 7.0 g of item 16 in a stainless steel container. Add slowly into the mixer while mixing. 

The manufacturing firms resort to different technical solutions providing for effective mixing and homogenization of materials in the cylinder of the screw machine,... 

Deschenaux et al. were likely first to use this combination of mesomorphic cyanobiphenyl-based dendrons, both mixed and homogeneous monolayer fashion, on gold nanoparticles with average sizes of 1.2 or 1.7 nm in diameter, but found no liquid crystal phase formation in the bulk aside from the pattern formation on TEM grids resembling a layer-like organization of the gold nanoparticles [546],... 

Mixing and homogenization section Unknown (not measurable) None - Possible... 

The twin-screw extruder may have parallel or conical screws, and these screws may rotate in the same direction (co-rotating) or in opposite directions (contra-rotating). Extruders with more than two screws are known as the multiple-screw extruder. These extruders are normally used when mixing and homogenization of the melt is very important, in particular where additives, fillers, and/or reinforcements are to be included in the plastic. 

Twin-Screw Extruders Two screws in a figure-eight barrel have the advantage of interaction between the screws plus action between the screws and the barrel. Twin-screw extruders are used to melt continuously, mix, and homogenize different polymers and additives. Twin-screw extruders can also be used to provide the intimate... 

The second procedure includes the removal of many small-weight samples from the total mass of waste collected each day. This is accomplished by using a crane with a bucket. As the waste mass is large and the small samples must be representative, the sample must be obtained after prior mixing and homogenization of the waste with the crane. The collected small samples are deposited on a specially designed place, and the same process, as previously mentioned, follows to obtain samples for chemical analysis. 

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