Rotary kilns are used across a number of industries to cause a chemical reaction or phase change in a material. This high temperature thermal treatment can be used to carry out a variety of different objectives, from catalyst activation to aluminum decoating. The number of …
Reduction roasting is the removal of oxygen from a component of an ore, usually through the use of Carbon Monoxide (CO). The CO is typically supplied by mixing a carbonaceous material such as coke or coal with the ore, or by feeding it separately. An …
Incineration has become an essential tool in managing industrial and municipal wastes more sustainably, as long-landfilled materials such as hazardous medical wastes, petrochemicals, ammunitions, and more, have proven detrimental to the environment. While many types of incineration equipment exist, the rotary kiln, a diverse and …
When it comes to drying material exiting a centrifuge, rotary dryers provide a reliable and consistent drying solution. Centrifuges are a critical and growing asset in modern industrial processing, allowing processors to separate solids from liquids in the pursuit of a wide range of production …
This week’s photo shows a rotary kiln’s leaf seals. The set-up consists of a series of overlapping spring steel plates that are attached to the housing, and ride on the rotating shell. Rotary kilns run at a higher temperature than the ambient air, thus any …
Variable Frequency Drives, or VFDs, are not a new technology, but only in recent decades have advancements in the field lowered many of the barriers associated with widespread VFD use, allowing their application in a range of settings. A recent market study anticipates that the …
Incinerators across the United States and abroad are preparing for a tidal wave of medical waste from the COVID-19 pandemic, with some countries already in the thick of it. As waste management companies prepare for the increased demand, we’ve put together the list below on …
Thermal desorption is the process of using heat to drive off an organic chemical from an inorganic mineral. Unlike incineration, it is a separation process that relies on different reaction temperatures of absorbent minerals and chemicals. The organic chemical is vaporized at high temperatures, resulting …
The COVID-19 pandemic continues to push into unprecedented territory, overwhelming existing infrastructure in many sectors. As the virus continues to sweep both the nation and the globe, the healthcare system (along with medical research facilities) is generating massive amounts of additional waste associated with the …
The “working” layer and insulating layer refer to a rotary kiln’s multiple layers of refractory. Refractory is what protects the kiln from high internal temperatures, and maintains heat retention. Sometimes it is desirable to use multiple layers of refractory, especially when higher efficiency is preferred, …