Economic and productive gas suspension calciners

Easier to optimise and automate

As a stationary system, our gas suspension calciners are easily outfitted with instrumentation for enhanced operational feedback in a way rotary systems are not. This improves visibility of key operating parameters for straightforward and effective process control and optimisation. It also means the GSC is readily automated via conventional DCS, whereas rotary devices require much more advanced automation solutions. The bottom line is a system that is easier to maintain at optimum performance levels, delivering highly efficient and cost-effective productivity.

Lower maintenance than rotating systems

The primary source of maintenance in thermal processing systems is the refractory lining. Rotating systems place significant mechanical stress on these linings, which simply aren’t present in stationary flash calcination systems like the GSC. Their refractory linings thus last longer between replacement or repair, cutting downtime and maintenance-related costs. There is also no need for the maintenance and periodic alignment of rotating components as is required with a rotary kiln.

Optimised heat recovery reduces fuel consumption

Our gas suspension calciners are fully integrated systems designed to recuperate and return as much heat as possible to the process. Hot calciner off gas flows to multiple cyclone preheaters, which transfer the heat into incoming raw materials. Meanwhile, hot calcined materials flow to cyclone coolers, which capture the heat from these solids and transfer it to the incoming air stream. This dual heat recovery significantly reduces the fuel consumed in the flash calciner.

Fuel flexibility reduces fuel costs and emissions

Our flash calciner can be fired with a wide range of solid, liquid, and gaseous fuels. It means fuel inputs can be optimised according to what is available and affordable locally, improving fuel security and costs. It also supports the transition to lower-carbon fuels such as natural gas, with the option to convert to carbon-neutral heating solutions, such as biomass, hydrogen, and electrified systems, in the future.

Automation and control

DCS control package to enable full automation of the GSC.

Fuel dosing

Fuel dosing circuit to support solid fuel or biomass firing.

Gas treatment

Off-gas treatment circuit for final emissions control.

SNCR

Selective non-catalytic reduction to reduce NOx emissions.

Secondary product cooling

Secondary product cooling to achieve lower final product temperatures.