A reliable electromagnetic injector for accurate impulse top-firing of tunnel kilns was developed in 1993. This equipment is well proven in the industry with more than 100 million operations without replacement of moving parts.
Manufacturing is conducted with stringent quality control measures to ensure accurate performance.
This is a critical variable in fired product quality. A flue-gas analiser is used to control excess air by means of a variable speed driver on the kiln extraction fan. Fluctuation in excess air determines the combustion efficiency and therefor the energy consumption as well as the chemical atmosphere in the firing zone. This results in unpredictable product colours and firing shrinkage. A dedicated micro processor based pulsating controller was developed to provide flexible firing control.