Since 2010 Heyl & Patterson has been blogging on the latest trends in bulk handling and thermal processing. Thank you to all of our blog subscribers for making 2015 great. It has been a busy year here at H&P and we appreciate you spending the time to read our content while sipping your mid-morning coffee.Read More
Heyl & Patterson Blog
Despite all the advances of modern technology, coal is still a major fuel source for many communities and industries. The United States and China are two major countries that still rely heavily on coal to produce electricity, as well as for industrial uses. While steps are being taken to make coal burn cleaner and more environmentally friendly, there are still the byproducts that come with its use. One of the most common end results is the ash it produces, which in many places is accumulating faster than it can be disposed of. The picture to the right, courtesy of the United States Department of Transportation's Federal Highway Administration, shows coal ash particles at 2000X magnification.Read More
Mica is a mineral of the silicate family, and is known to most people as the glittering gold flakes in some rocks. It splits into thin sheets when fractured, and is found in all three types of typical rock formations. The most common is muscovite mica, also called potassium mica, which is found in both metamorphic and igneous rocks. A black-colored variant called biotite commonly appears in igneous rocks such as granite, and also appears in metamorphic rock. It is comparatively rare in sedimentary rocks, but where it does appear, its thin gold-like flakes are often confused with the genuine material. Hence the term "fool's gold."Read More
Frac sand plays the essential role of preventing fractures in oil and gas wells from closing prematurely. Fluid bed and rotary dryers are used to thermally treat the sand to remove impurities before it is injected into the fissures. Both methods of frac sand drying have their merits, and a decision between them ultimately comes down to equipment costs and maintenance issues. Heyl & Patterson recently explored the two types of frac sand dryers in an article published in Process Heating magazine's June 2015 issue, entitled "Using Rotary and Fluid Bed Dryers for Drying Frac Sand." The article was featured as the cover story.
A pilot plant is a small-scale industrial plant in which problems can be identified and solved before the corresponding full-scale facility is built. In terms of thermal processing, such a testing ground is a basic laboratory that uses stock process equipment to provide valuable data for the design of a larger version, so that any anomalies in the process can be worked out before the full-scale plant is constructed. Scientific data about reactions, material properties and even corrosiveness may be gathered, and it helps to predict the behavior of a process. Plant designers use data from the pilot facility to refine their design of the production scale facility. When bulk materials must be dried as a part of the process, a fluid bed dryer is often a key component.Read More
Mined and manufactured salts containing water-soluble potassium are known as potash. Prior to the Industrial Revolution, the primary means of obtaining it was by using water in a pot to leach it from wood ash, hence the name "potash." In fact, the scientific name "potassium" was derived from the word. It is now mined from ancient marine seas where it is found in abundance, occurring naturally as potassium salts, or as we know it, "table salt." Potash is then processed from potassium compounds and potassium-bearing materials, usually as potassium chloride. This salt is separated from the potash and used for a variety of salts -- table salt, livestock salt, water softener, and road de-icer.
Heyl & Patterson Inc., a world leader in bulk material handling and thermal processing systems, will present “Fluid Bed and Rotary Dryers for Frac Sand” at the 2015 Oilfield Minerals & Markets Forum on Thursday, May 28 at 4:30 PM CST at The Houstonian Hotel in Houston, TX. The conference covers global shale gas development, utilization and outlook, and will be held on May 27-29.Read More
According to the U.S. Environmental Protection Agency (EPA), the two largest beneficial uses of encapsulated coal combustion residuals (CCR) -- commonly known as coal ash -- are as substitutes for portland cement in concrete, and for gypsum in wallboard. The EPA concluded that these uses of coal ash are most appropriate because they are comparable to the original materials, or below the agency’s health and environmental benchmarks. Concrete and wallboard account for nearly half of the total amount of coal ash that is reused. The extraction of raw minerals consumes energy, impacts the environment, limits the availability of natural resources and has a detrimental effect on water resources. The recycling and reuse of waste materials helps decrease these unfortunate impacts.Read More
The ancient Greek mathematician Archimedes is best known for inventing a screw pump mechanism to transfer low-lying water into irrigation ditches. He also developed the scientific rule in which a body immersed in a fluid experiences a buoyant force equal to the weight of the fluid it displaces. Archimedes' Principle basically means that objects will either float or sink in a fluid depending upon their density, and is considered one of the fundamental laws of physics. This is one of the ideas behind the functionality of fluid bed dryers. In fluidized bed systems, air or another gas streams upward through a bed of bulk material, lifting the material and causing the particles to float and behave like a fluid. Archimedes may have been one of the most brilliant scientists in classical antiquity, but he likely never imagined how his principle would be applied toward industrial drying equipment.
Agglomeration and granulation are two common terms used in process industries, and they are actually synonyms. Granulation is the process of forming a powder, dust or sludge substance into multiparticle entities, and the resulting granules can vary in size from either 0.2 to 4 mm depending on their specific use. Agglomeration is also known as particle size enlargement, and is a general wide-spectrum term for granulation. These technologies are excellent tools to modify mass product properties for further and easier processing.