Ross Engineering, Inc.

The horizontal cylindrical dryer design includes either a ribbon or paddle agitator, depending on the materials and the range of volumes to be dried. The agitator continuously moves the materials within the vessel, past the jacketed trough walls until the desired moisture content is achieved. Cylindrical dryers are available from .33 to 343 cu.ft. working capacity, and can be supplied with a wide range of features to suit each clients special needs.

V-Blenders designs are most often used for the intimate dry blending of free flowing solids. The solids being blended in these units can vary in bulk density and in percentage of the total mixture. Materials being blended are constantly being split and intermixed as the shell rotates. Normal cycle times are typically in the range of 15 minutes, however can be less depending on the difficulty of blending. V-Blenders are stocked in 5, 10, and 15 cu.ft. capacity. Each is constructed of type 316-stainless steel and is internally polished to a 240 grit sanitary finish. The exterior is polished to an easily cleaned 150-grit finish. All Ross V-Blenders are supplied with Intensifier bars to permit deagglomeration as needed. Discharge is accomplished through a manually operated Butterfly valve. The valve is positioned 24” from the floor when in the bottom position. All units are provided with appropriate safety railings and appropriately interlocked safety interlocks. Stop-Start and E-Stop Pushbuttons are included with all blenders.

This stainless steel vessel is ideal for a variety of deaeration requirements. The vessel isconstructed of type 304 stainless steel, has a 600 gallon capacity with interior surfaces polished to a 120 grit finish.

Vertical API tanks are a specialty of our company. These are normally manufactured in stainless or carbon steel and are available in any size to meet your needs.

The rotorstator generates an intense vacuum and sucks in powders and liquids into the rotor-stator area. A feed tube adjacent to the back of the rotor provides a path to inject solids directly into the stream. The solids are combined and mixed into the flowing stream at the same point, the mixer is capable of handling extraordinarily large volumes of solids without clogging. A rotorstator generates an intense vacuum in the high shear zone and sucks in powders and liquids into the rotor-stator area. A feed tube adjacent to the back of the rotor provides a path to inject solids directly into the stream. Since the solids are combined and mixed into the flowing stream at the same point, the mixer is capable of handling extraordinarily large volumes of solids without clogging.A rotorstator generates an intense vacuum in the high shear zone and sucks in powders and liquids into the rotor-stator area. A feed tube adjacent to the back of the rotor provides a path to inject solids directly into the stream. Since the solids are combined and mixed into the flowing stream at the same point, the mixer is capable of handling extraordinarily large volumes of solids without clogging.

The High Viscosity Disperser is a useful mixer when slow speed-high viscosity paste mixing is required. The PBA Model includes an airoil hydraulic lift to raise and lower the agitator from a mix can. The agitator is either a slow speed Turbine or a Bow Tie design. As the agitator rotates in the batch of material, it gently blends the product until full homogeneity occurs. Wetted parts are normally of stainless steel construction and drives are designed for variable speed operation using a Variable Frequency Inverter.

Our Kneader Extruder combines the efficiency of a double arm - sigma blade mixer with the convenience of an extrusion screw for the mixing and discharging of heavy viscous materials. The Kneader Extruder includes a set of counter-rotating kneading blades and a discharge screw. The blades are mounted on a horizontal axis in a u-shaped trough. Below the blades in a separate cavity is the discharge screw. During the mixing cycle the blades rotate toward each other while the mixing screw rotates in a reverse direction, constantly feeding new materials into the mixing blades. After the mixingkneading cycle is complete, the screw is reversed and it transports the mixed materials from the mix zone out through a discharge die and on to further processing or packaging. The Kneader Extruder has several advantages over conventional non-screw discharge kneaders: 1. Mixes in approx. 15% less time 2. Eliminates the manual task of scraping out stickytacky materials. 3.Eliminates operator exposure to materials of elevated temperatures or of a toxic nature, thereby improving plant safety. Many sizes and designs are available to meet the most stringent process needs. Kneader Extruders are manufactured in many sizes from 1 through 1000 gallons capacity.

We offer Dual and Triple Shaft designs to meet the specific requirements of each customer. The economical Dual Shaft design includes a two-wing anchor agitator and a conventional high speed disperser. This combination is ideal for straight forward mixing and dispersion applications. The triple shaft design extends the operating range by adding either a high shear rotor-stator mixer or a second high speed disperser. The addition of a high shear rotor-stator mixer adds the capability of emulsifying and homogenizing products that require higher shear to reduce the size of the particles being mixed.

Vertical Blenders are an excellent design alternative for applications that are shear sensitive or where space on the plant floor is at a minimum. The gentle blending action of the slow turning blending screw is far gentler than that of a horizontal blender. The blending screw orbits the conical vessel wall while it turns and gently lifts material upward. The materials are then thrust at the upper most batch level towards the center of the vessel, and then move slowly back down the center, while mixing with materials being moved upward by the orbiting screw. When compared to horizontal blenders this design has several

The patented PowerMix* combines a planetary blade and a high speed dispersion blade. Both agitators are in constant motion. The planetary and the high speed disperser blades rotate on their own axes and also rotate continuously around the vessel. The planetary blade feeds materials directly into the high shear zone of the orbiting high speed disperser. This combination of unique mixing actions combine to eliminate the need for multiple mixers that this one machine can accomplish. Both agitators are independently variable speed to permit users to fine tune the speeds to the process at hand. The PowerMix is available in sizes from 12 through 750 gallons and can be supplied with many options such as vacuumpressure, jacketed vessels, etc.