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
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 Heyl & Patterson Blog, or simply the H&P Blog as it is known on social media, has been posting articles regularly since 2010. At Heyl & Patterson, our goal is to educate and inform you about the latest developments in your industries. This forum has covered topics as varied as the industries we serve, from explaining the inner workings of conduction dryers to examining how a railway across Colombia could compete with the Panama Canal. As the author of this blog, I've never broken the fourth wall, but I'd like to thank all of our subscribers for following us, and if you haven't yet read the Heyl & Patterson Blog, this is a good time to start.
Tags: Heyl & Patterson, barge unloaders, industrial dryers, torrefaction, process equipment, H&P Process Spotlight, calciners, sand, continuous barge unloader (cbu), oil sands, coal ash, tailing ponds, activated carbon, upgrades, dust collection, algae, biomass
A tailings pond is a temporary storage area for the leftover by-product materials from oil sands, shale gas and coal ash operations, and is often a discontinued mine pit that has been re-engineered with a dam and dyke system. The contents of the pond is a slurry, with large volumes of water, sand, clay, residual hydrocarbons, heavy metals, naphtha diluents and naphthenic acids, which are known as tailings. The various materials settle to different depths, but they can all be dredged and dried to reduce their volume and eliminate moisture.