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Laboratory Mixer-Extruder MXE2
| Vinci Technologies proposes
equipment devoted to catalyst forming from alumina, zeolites, SAPOs, titanium
dioxide powders (for example), even silicon carbide, to extrudates, at the
This equipment is the
smallest equipment available for catalyst shaping and the most convenient for
laboratories and researchers. It allows catalyst testing under the form of extrudates
instead of powders. This results in much more reliability and accuracy of the catalytic tests, in particular for
lab-made catalysts. Indeed, testing extrudates means testing active powders
mixed with binding agents, as is the case for industrial catalysts.
operations are necessary for obtaining extrudates from oxide gels or powders: mixing, consisting of a thorough mixing
action of oxides, water, and binders, and extrusion,
consisting of pushing the mixed product with a screw (continuous extrusion –
for large product volumes) or a piston (batch extrusion - for small volumes as
those achieved in R&D labs) through a die.
The Z blade twin screw extruder/mixer type MXE2 operates in batch quantities, with pre-weighed loads. It's a device well adapted to compound high viscosity products and mainly for production with extrusion of tyxotropic products.
Mixing of the different component materials is obtained by continuous action of two Z blades rotating in reverse direction one from the other (converging or diverging movement). Their very robust particular blade has been selected so that their combined movements would produce a continuous motion of the product along an 8 blade circuit inside the bowl. During mixing stage, rotation of the twin screw is forcing back the product inside the bowl and takes large part in homogenising the different products.
At end of mixing stage, product extrusion or discharge is obtained through twin screw rotation reversing.
Download : Laboratory
mixers & extruders brochure