AE-270/450 polycrystalline silicon ingot furnace adopts various kinds of new technologies, and with the advantages of a larger loading and a higher productivity. The adoption of special ceramic fiber and the double safety protection design of graphite hard felt will guarantee that the emergency measures for silicon leakage can be started promptly with the automatic induction system of silicon leakage. The excellent safety performance of this furnace can reduce the potential accidents greatly. The heating system with high performance can guarantee the uniformity and consistency of silicon during the crystallization process. The operation process adopts PLC control, high-speed microprocessor testing and processing elements, dynamic detecting and high-speed response, and it has realized the automatic control and data exchange in the whole process. Therefore, this furnace takes the advantages of high efficiency, high stability, high reliability and good anti-jamming. What¡¯s more, its control system is equipped with single-phase UPS devices, which can reduce the loss coursed by instant power interruptions. Polycrystalline silicon ingot furnace is an important production equipment in the field that generates electricity though solar photovoltaic, it is also a kind of polycrystalline silicon ingot casting equipment which is developed to meet the needs of solar battery market. Putting the materials such as polycrystalline silicon pieces, end-wastage, crucible base material and various kinds of mono-crystal waste pieces into the quartz crucible of the furnace, and after the relevant process of melting, re-directed crystallization and annealing, it can cast the preliminary raw material of solar battery, what we called polycrystalline silicon ingots. Technical parameters specifications AE500 AE800 Equipment size mm3 L3700 W4900 H5080 L3700 W4900 H5080 Silicon ingot size mm3 420kg:840 840 270480kg:840 840 300 650kg:1000 1000 280 700kg:1000 1000 300 Silicon ingot weight kg 420-480 650-700 Production cycle hr 52-54 60-62 Power distribution AC 380 10% V,200kVA,three-phase five-wire system,50Hz AC 38010% V,200KVA,three-phase five-wire system,50Hz Heating power kw 165 165 Heating consumption for single furnace kW/hr ‚2900(430kg) ‚4000(680kg) Silicon ingot consumption unit kW/hr ‚6.8‚6 Vacuum and other energy consumption kWh 350400 Max temperature 16001600 Max working temperature 1560 1560 Vacuum system Mechanical pump +Roots pump Mechanical pump +Roots pump Ultimate vacuum inside the furnace mbar 0.02 0.02 Leakage rate of system mbar¨Mhr 0.01 0.01 Evacuating time min38 38 Cooling water Flow:140LPM pressure:0.35-0.5MPa differential pressure:0.25MPa inlet temperature:21-30 Flow:140LPM pressure:0.35-0.5MPa differential pressure: 0.25MPa inlet temperature:21-31 Compressed air Mpa0.5-0.60.5-0.6 Process gas Flow:0-50LPM purity of air source:50ppm gas consumption of single furnace 70m3 pressure .4-0.6MPa Flow: 0-50LPM purity of air source 50ppm gas consumption of single furnace:100m3 pressure:0.4-0.7MPa Ambient temperature 540 40 Ambient humidity 65%65% Ground requirements Ground levelness: 5mm, load-bearing 2.5T/m2Ground levelness: 5mmload-bearing 2.5T/m3.
