Each Mixtec agitator is individually designed and manufactured according to process requirements and operating conditions.
The right impeller is matched with your mixer by considering the profile, pumping and power needs of your application. We factor in the velocity gradient, superficial (in-tank) velocity, pumping rate, tank turnover rate, tanks shape, liquid level variation, location of impellers and direction of pumping to ensure a successful solution.
Materials:
Carbon Steel, 304L Stainless Steel, 316L Stainless Steel, 904L, Alloy 2507, Alloy 2205, Titanium, Hastelloys, Inconel, LDX2101.
Lining:
Soft Natural Rubber, Chlorobutyl, Bromobutyl, Nitrile, Ebonite, Fibre Glass (GRP), Nordbak products, Epoxy Paints. Polishing, Halar and Ultralar (ECTFE).
Some of the most commercially successful impellers are high efficiency hydrofoil (general applications, leaching, CIP/CIL), high gas rate hydrofoil (BIOX, cyanide destruction / detox), rushton turbine (autoclave / POX, HPAL), pumper impellers (solvent extraction), draft tube systems (wet process phosphoric acid, draft tube crystallizers), anti-ragging impellers (wastewater treatment) and many others.
Hydrofoil Impellers
These impellers are the latest generation of our high efficiency hydrofoils which reduce operating costs and result in smaller more cost effective drives. They are the most widely used impellers for low to medium viscosity blending and solids in suspension applications. Their strong axial flow allows for sufficient off bottom spacing to ensure that the impeller does not become bogged in settled solids should the mixer be shut off.
Up pumping variations are also used in combination with other impellers to maintain uniform mixing throughout the vessel at lower power inputs. Modifications can be made to the hydrofoil to ensure that it generates sufficient flow rates even when the impeller is required to be in very close proximity to the tank bottom.
The latest HA777 and HA776 impellers offer process intensification at lower power consumption reducing the cost of the agitator system and optimising the production process.
High Viscosity Impellers
The HA710,HA745, HA757 have different properties for specific high viscosity applications. When combined with other impeller configurations they can meet the exact standards of high precision chemical and industry processes.
Viscous products require higher power inputs and different design criteria to more water-like products. Mixtec has been designing mixers and anchors for highly viscous products for over 30 years and can design mixers capable of handling extremely viscous products.
Mixtec is also very familiar with many products that are non-Newtonian in nature and understands what is required to achieve your process.
Gas Dispersion Impellers
The HA736 has been specifically designed as a gas dispersion impeller and is also used in solids suspension applications when settling rates are very rapid. This unique design insures proper gas dispersion and generates a very aggressive flow rate, which is required in many mining and industrial mixing applications.
The HA790 is a Rushton turbine with six to eight horizontal blades that move the fluid radially outward. This impeller is used for high shear mixing applications and in some cases can be used near the bottom of the mixing vessel.
Radial Flow Impellers
The HA791 is a vertical flat blade turbine for mixing very close to the tank floor. The higher shear rates produced makes it an excellent choice for high power per unit volume applications such as attritioning and conditioning.
The traditional curved blade turbine of the HA793 and HA794 is used primarily in water treatment applications. The non-fouling blade geometry is vital for continual unhindered mixing. However, due to higher power demands, these impellers are mostly replaced by our anti-ragging AS700 impeller.