Transportable Rotary Kiln for Soil Treatment

Traditional design – technology at its roughest – highest flexibility

Rotary kilns are used in the mineral industry for processing of various minerals such as nickel, iron, zinc, vanadium, limestone, expanded clay etc. The rotary kilns are designed for reliable operation in the different processes dealing with high throughputs and high temperatures. thyssenkrupp Industrial Solutions’ rotary kilns reliably fulfil the client’s requirements and are capable of intermittent mechanical and process overloads during normal operation

Professional Rotary Kiln Manufacture.pdf

Transportable Rotary Kiln for Soil Treatment

• Temperature:500-1500°C

• Containerized solids (i.e., drums) can be fed along with smaller packages while sludges or bulk solids are concurrently fed

• Generally built on a large scale – 50,000 tpy is common

• Extensive support infrastructure needed for successful operations – Not uncommon to require several dozen staff including administrative, technical, operations and maintenance – Waste receiving, air pollution control, solids handling and scrubber water treatment facilities can be elaborate

• Generally configured with large induced draft fan or fans near the stack to assure vacuum is maintained on all upstream equipment

This slide actually depicts a transportable rotary kiln unit being used for a soil treatment project, but its configuration and features are common to many units of this type. The feed end is on the right just below the conveyor and the discharge end is on the left. In order for the kiln to rotate there are two “riding rings” that are affixed on the outside of the kiln itself. These roll on bearings located just underneath each riding ring. In addition, a large horsepower motor, shown in the center of the kiln on the front, drives the kiln rotation through the “bull gear”, which goes entirely around the center of the kiln. Depending on how hot the kiln is actually operated, back-up ability to turn the kiln is often provided as in some units, particularly those that run in slagging mode at higher temperatures, must rotate to avoid overheating the crown of the kiln and possibly cause warping of the steel shell.