SITE INSTALLED TYPE MELTING FURNACE FOR DUST COMBUSTION ASHES

摘要

PROBLEM TO BE SOLVED: To provide a site installed type melting furnace in which some dust combustion ashes can be melted at a low cost and in a superior thermal efficiency while various kinds of advantages caused by application of a pure oxygen burner are being utilized at the most. SOLUTION: A pure oxygen burner for igniting oxygen gas having an oxygen concentration of 50% or more together with fuel is operated and soda ash (sodium hydroxide) is applied for melting into glass form. A melting chamber 1 for the dust combustion ash and a melting holding chamber 2 for the ash are defined and cooperatively arranged through a communication passage. A dust combustion ash feeding port 4 and a discharged gas discharging passage 5 are arranged above the melting chamber 1. A discharged gas discharging passage 6 is arranged above the melting holding chamber 2. A melted dust discharging port 7 is arranged below the discharging passage. There is provided each of at least one of pure oxygen burners 8a, 9a for igniting oxygen gas of oxygen concentration of 50% or more together with fuel.