In bulk material handling systems, dryers are used to remove moisture or undesired liquid from a substance. For this to happen, the dryer must facilitate evaporation whereby the liquid turns into a gas.
Dürr Megtec LLCDe Pere, WI | 920-336-5715
Dürr Megtec provides customized systems for: regulatory compliance; improvement in working environment and in neighbor relations by reducing odor from industrial processes and helping to reduce greenhouse gas emissions and process energy management.$$$
Baker-Rullman Manufacturing, Inc.Watertown, WI | 920-261-8107
Established in 1980, Baker-Rullman Manufacturing, Inc. is a leader in the engineering, design, and fabrication of rotary drum dryers, modular steel bins and hoppers, structural steel, feed and seed mill systems, and custom metalwork. At Baker-Rullman Manufacturing our team of experienced, knowledgeable engineers are ready to get your project off the ground. With more than 30 years of project management experience, we can develop custom designed turn-key solutions to meet your needs!$$$
FEECO International, Inc.Green Bay, WI | 920-468-1000
Since 1951, FEECO has designed and manufactured both direct and indirect rotary dryers for a variety of industries around the world. All dryers are customized to fit the unique processing requirements of the material, with material testing/process development assistance available, in addition to post-sale support including inspections, parts replacement, and more.$$$
Heyl Patterson Thermal ProcessingCarnegie, PA | 412-788-9810
For over 125 years, Heyl Patterson has custom-engineered thermal processing solutions that are trusted in dozens of industries worldwide. We specialize in high quality drying equipment, such as Rotary Calciners, Rotary Dryers, Fluid Bed Dryers, Flash Dryers, Disc Dryers, Sludge Dryers, Conduction Dryers and Soil Remediation Units. Our pilot plant testing lab helps determine the best technologies and equipment for any application, and we support our clients for the life of their equipment.$$$
Carrier Vibrating Equipment, Inc.Louisville, KY | 502-969-3171
Carrier is a manufacturer of high quality dryers in addition to many other related products, including coolers, screens, air knife separators, spiral elevators, feeders & conveyors. Industries served include chemicals, synthetics, foundry, glass, pharmaceutical, explosives, wood, metal, scrap & recycling. Carrier’s custom-engineered solutions extend to plant sites around the world.$$$
DryersDrying is essential to most bulk material handling facilities as moisture can compromise the quality of a product, especially if it will be stored or packaged for an extended period of time. It is also important that the dryer used in an application functions at a temperature range that is not harmful to the product being processed. Depending on what kind of bulk handling application the dryer is being used in, a food dryer, industrial dryer, or parts dryer may be used. Three primary methods are used to dry bulk substances and materials: spray dryers, infrared dryers, and air dryers. An air dryer works by bringing the bulk product into direct contact with either hot or cold air. Freeze dryers, flash dryers, rotary dryers, and fluid bed dryers are all commonly used for applications that range from food processing to pharmaceuticals to agricultural bulk products. Technologically advanced infrared dryers take energy from an infrared wavelength and use it to extract the moisture from the inside of a substance without overheating it and damaging its properties. The third type, spray drying, is a popular method in bulk food processing systems. A spray dryer can dry batches or a constant stream of material on a conveyor. Sometimes these dryers are mounted over a conveyor that pulls that bulk material through the dryer. Heavy, wet bulk materials pose a unique challenge when it comes to drying in a bulk material handling system. In cases like this, rotary dryers are used. A rotary dryer has a rotating drum that is heated by hot air. When the bulk materials are placed inside the drum, they are guided through several heated chambers to dry them in stages. Bulk powders are often dried this way. Advantages of a drum dryer include its ability to process both fine and coarse solids, its durability and its extremely high drying temperatures with maximum efficiency provided by minimal heat loss. Food processing facilities sometimes use what is called a fluid bed dryer. A fluid bed dryer has a permeable surface that is able to support bulk materials. As heated air or gas is released into the dryer, the particles start to vibrate. Food like cereal can be easily dried this way since the particles are mostly uniform in size. Fluid bed dryers are affordable, well suited to fine grained materials, recover heat well, and do not damage temperature-sensitive materials. As technology improves and bulk material systems evolve to process higher volumes of material, dryers continue to be manufactured in larger and larger sizes. With multiple heat sources and chambers, many industrial dryers can now dry high volumes of material in a very short amount of time. With the right dryer or set of dryers in a bulk material handling system, substances can be adequately dried and prepared for shipping and storage without any risk of product deterioration due to the presence of moisture. When selecting a dryer for a bulk material handling system, the particle size, density, and viscosity of the material should all be carefully considered. The volume and rate of material being dried will also help to determine which dryer is most appropriate for an application.
Dryers are now available in many different models with a wide range of industries and purposes in mind, so it is possible to select a dryer that is optimal for your bulk requirements.