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Molten Metal Equipment Innovations |
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The benefits of furnace circulation are many. They include:
¨ Increased Productivity and Melt Capacity ¨ Metal flow from the pump helps to melt the metal faster, allowing more to be charged. ¨ Improved fuel consumption allows this excess burner capacity to be used to melt more metal ¨ Typical increases in melt rates range from 10-50%
¨ Improved Metal Recovery Rates ¨ The pump will increase the melt rate and rate at which solids are submerged into the molten metal bath ¨ Faster melting rates mean less time for oxides to form ¨ Subsurface melting provides a molten barrier to oxide formation ¨ Even small improvements can result in large savings
¨ Improved Heat Transfer ¨ Circulation in main chamber reduces metal surface temperature and increases heat transfer. ¨ Movement of metal in charge well increased the heat transfer to the solids through convection ¨ Melting in sidewell prevents most dross from entering main chamber and forming insulating barrier (which reduces heat transfer)
¨ Reduces Fuel Consumption ¨ Improved heat transfer reduces fuel consumption ¨ Typical reduction in fuel consumption of a circulated melting furnace are in the range of 10-30% ¨ In a time of rising costs, this is crucial. Fuel savings are significant and provide a fast payback.
¨ Improved Alloying ¨ Movement of metal reduces the time needed to alloy ¨ Alloying agents dissolve faster ¨ Pump provides thorough mixing of the furnace ¨ Helps keep hard to alloy elements in the metal
¨ Significantly Reduces Temperature Stratification in the Furnace ¨ Mixing action from circulation practically eliminates temperature stratification. ¨ Temperature is homogenized quickly by flow of the pump. ¨ Provides assurance that temperature will be same wherever the metal is drawn from.
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