Planetary-paddle mixer

Sigma-blade and planetary-paddle mixers are used for solid blending and as a step prior to the introduction of liquids (Figs. 6 and 7. This type of mixer rapidly breaks down agglomerates. 

Pan mixers Vertical, rotating paddles, often with planetary motion Mixing, whipping and kneading of materials ranging from low viscosity pastes to stiff doughs Food, pharmaceuticals and chemicals, printing inks and ceramics... 

The bottom ash was treated with 0.4 moles of PO (from industrial-grade phosphoric acid) per kg dry weight of ash. The scrubber residue was treated with 1.2 moles of PO per kg of scrubber residue. The vitrification dust was treated with 0.4 moles of PO3- per kg of residue. Process mixing in all cases used an LS of 0.4. Mixing was done for 10 minutes in a Hobart mixer using a tined paddle (108 rpm) with a planetary orbit (48 rpm). 

Convection blenders reorient groups of particles in relation to one another as the result of mechanical movement, for example, caused by a paddle or a plow. As a result, circulation patterns result in this type of blenders. Subclasses of convection blenders are typically defined by vessel shape and impeller geometry. Ribbon blenders (Fig. 30), planetary blenders (Figs. 31 and 32), orbiting screw blenders (Fig. 33) are examples of convection blenders. High shear mixers comprise another sub-class of convection blenders that will be discussed separately. 

Change-can mixer (pony mixer) n. A type of planetary mixer comprising several paddle blades mounted on a vertical shaft rotating in one direction while the can or contained counter-rotates. The paddle shaft is usually mounted on a hinged structure so that it can be swung out of the can, permitting the can to b removed, emptied, and replaced easily. This type of mixer is employed for relatively small batches (12-480 L) of fluid dispersions and dry materials. 

Low shear mixing can be accomplished with anything from a drum tumbler to a variety of planetary mixers. Planetary mixers have low speed screws or paddles that mix the ingredients in the bin or hopper. A charge of no more than 80% of the mixer s capacity is good practice. 

The machine classes to be considered under mechanical agitator granulators are (1) ribbon or paddle blender (2) planetary mixers (3) orbiting screw mixers and (4) sigma blade mixers. 

Typical batch mixers include planetary mixer [shear] blade (Helen) mixer [convection shear] blade (double-arm) mixer [convection shear] paddle (pan-type) mixer [shear] paddle (Marion) mixer [shear diffusion] tumbler (drum) mixer [shear, diffusion] tumbler (double-cone) mixer [shear] tumbler (twin-shell) mixer [shear] Muller mixer [shear] mill mixer [shear] ribbon mixer [convection diffusion] vertical spiral mixer [convection diffusion] Nautal mixer [convection diffusion] Banbury mixer [shear] airmix mixer [convection diffusion] Lodige mixer [shear diffusion] gravity mixer [convection] and vibratory mixer [convection shear]. 

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