Powder Injection Mixer with High-Efficiency Charging Hopper


Ross is offering a new high-efficiency charging hopper for its line of High Shear Mixers with Solids/Liquid Injection Manifold (SLIM) Technology. The SLIM is a unique rotor/stator device engineered for high-speed powder injection into liquid without the need for eductors or pumps. The improved hopper design ensures a steady rate of feed delivery and prevents “rat holes” or bridging of bulk solids. Typical solids dispersed using the SLIM include fumed silica, CMC, guar gum, carbon black, carrageenan, xanthan gum, talc, alginates, pectin, titanium dioxide, calcium carbonate, starch, clays, alumina, carbomers, sugar, salts, dye powders and other additives or fillers.

Shown is a 30HP inline SLIM Mixer with a 6 cu.-ft. conical feed hopper featuring multiple air jets and three level transmitters to automatically indicate HIGH (powder feed off), LOW (powder feed on) and LOW-LOW (SLIM induction valve off). The mix chamber is equipped with a solenoid-operated multi-position modulating valve for maintaining a liquid flow rate within 80% to 100% of the 500 gpm design flow rate.

All product contact parts are stainless steel 316 polished to 150-grit (32 Ra) finish. Tri-clamp connections on the liquid inlet, powder inlet and mixture outlet allow for easy disassembly and cleaning. The mixer is supplied with a cartridge-type double mechanical seal and barrier fluid tank.

Charles Ross and Son Company