OCR Text |
Show 2. Structure The furnace, as shown in Figure 2, has four chambers: ingot feeding chamber, burner chamber, bailing -out chamber, and returned ingot feeding chamber. These are interconnected through openings at the bottom of each chamber. The exhaust gas from the two burners goes into the ingot feeding chamber before it goes out of the furnace. The ingot, after being fed into the ingot feeding chamber through the supply port, is heated by the exhaust gas from the burner, and gradually sinks into the molten aluminum. Its temperature is raised by the heat transferred through the melting hole from the burner chamber, before flowing into the bottom of the burner chamber. The burner raises the temperature of the molten aluminum that has just flowed in, which then goes to the bailing-out chamber, and is bailed out from the outlet port, being kept at a specified temperature. Ingot supply port rt Fig. 2 Structure 0/ the Furnace 3. Performance 3-1 Tesi results/or the 100 kglhfurnace We tested the 100 kg/h furnace under the following conditions. Conditions • Aluminum material AC4C (all ingot) • Melting capacity Approx. 100 kg/h (somewhat variable according to the weight of ingot.) • Holding capacity 750 kg • Molten aluminum temperature 700°C • Test time Melting - approx. 4.58 hours Holding - approx. 12 hours • Ingot supply method Manually supplies 35 kg every 20 minutes. • Molten aluminum bailing-out method Manually bails out the same amount as that supplied. 6 |