The combustion system comprises of High Velocity Dual Fuel burners, mounted on the furnace on diagonally opposite corners. The burners fire horizon¬tally along the kettle sides into the formed combustion space, causing the resultant hot products of combustion to flow rapidly around the kettle giving rise to a high degree of heat transfer through the kettle walls to the zinc.
All the burners are fitted with air orifice meters. This enables gas and air flow rates to be monitored accurately and adjusted via variable orifice valves. These meters guarantee accurate air/fuel mixture ensuring continual economic operation. The complete system is modulated by PID controller which recognizes the drop of 0.1°C and provides the signal to increase or decrease the heat input to the chamber.
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