Small-capacity DC arc furnace is generally used as a test furnace, the crucible by the size of the power conditions and restrictions, the use of a single electrode, DC, dump converter-bodied, three-phase alternating current is rectified by the positive and negative outputs, bottom then the power pole, upper graphite electrode connected to another power pole, bottom conductor is both a crucible furnace.
For a variety of ferroalloy smelting, such as ferrosilicon, ferrochrome, ferromanganese, ferronickel, industrial iron, silicon aluminum, calcium alloy and rare earth alloys.
For the production of calcium carbide, phosphorus, and fused corundum, magnesia, etc.
DC ORE (arc melting) furnace bottom part of the special structure is that, both the anode and the bottom melting crucible, requires bottom should have good electrical conductivity and durability.
DC electric furnace compared with the exchange, has the following advantages:
A single electrode DC furnace, the electrode with low power consumption, electrode consumption less.
2 DC electric power factor of the natural high, in the case without compensation, power factor up to 0.9.
a) DC electric flicker effect and has a low noise, especially noise when submerged arc reduced by 20 decibels (dB) or more.
b) used a dc furnace electrode device structure is simple, easy to install dust hoods to control smoke.
c) DC electric furnace electrode core temperature is high, the heat concentration, easy-to-deep electrode, bottom up is not easy, suitable for high melting point than the product of smelting.
3 DC Furnace role of both the molten salt electrolysis, to speed up the reduction of metal oxides, metal recovery rate.
4 DC arc stability for AC arc, work, three-phase current balance, reduce interference on the power grid, while running stable, easy to operate
Model Rate capacity (T) Max. Capacity Furnace I.D. (mm) Transformer? Power (KVA) Input voltage (V) Electrode DIA. (mm)
DF-0.05 0.05 0.08 700 50 AC 400 100
DF-0.1 0.1 0.13 1100 150 AC 400 150
DF-0.2 0.2 0.25 1600 300 AC 400 200
DF-0.5 0.5 0.8 2200 630 6.3/10KV 250
DF-0.8 0.8 1 2200 800 6.3/10KV 300
DF-1 1 1.2 2400 1000 6.3/10KV 350
DF-1.5 1.5 1.8 2600 1250 6.3/10KV 350
