Case Study: DC Electric Arc Furnace XCK for Ore Smelting with a Zinc Ingot Line
Pingxiang Xinchen Furnace, an industrial furnace manufacturer in Pingxiang, Jiangxi, China, supplied the equipment for this project. A smelting plant needed to process zinc-bearing ore and secondary materials into cast zinc ingots, with stable arc power and a complete dust removal path. The plant selected the XCK series direct current electric arc furnace (DC submerged arc type) after comparing AC alternatives.
The equipment
The XCK series covers furnace inner diameters from 2000 to 6200 mm and rated capacities from 0.5 to 100 tons, with transformer rated power up to 63000 kVA. The DC rectifier power supply converts alternating current to direct current; the electrode enters the semi-enclosed furnace body and short-circuits with the furnace bottom to generate arc light at about 4000 °C. Materials melt continuously through arc heat, resistance heat and reaction heat, with voltage and current set by the smelting process parameters.
The process line
Materials are crushed, mixed and ball-made, then pre-reduced to about 1000 °C and fed automatically into the furnace. Molten metal passes through the intermediate package to the ingot casting line, then crushing and screening before packaging. Off-gas goes through the exhaust preheating furnace, cooler, cyclone dust removal and bag-type dust removal to dust collection, while the high-voltage cabinet, transformer, rectifier power supply, cooling tower and circulating water pool support the power side, and the water-cooled furnace cover protects the roof.
The result
The plant runs continuous submerged-arc smelting with stable power input at different smelting periods, casts zinc ingots directly from the line, and meets dust emission requirements with the closed exhaust path. Slag can be sold or further crushed for other uses, and cast iron machines produce casting iron ingots as a side output.
Key specifications (XCK DC arc series)
Eleven models from XCK-0.5 to XCK-100: furnace inner diameter 2000-6200 mm, rated capacity 0.5/1 to 100/120 ton, transformer rated power 630-63000 kVA, secondary voltage 200-98 V up to 920-720-480 V, electrode diameter 150-600 mm. Arc temperature about 4000 °C.
Model range
From XCK-0.5 (0.5/1 ton, 630 kVA) to XCK-100 (100/120 ton, 35000/50000/63000 kVA), each model ships with the electrical cabinet, short network system, hydraulic system and cooling water system matched to the furnace size. Contact us with your ore type and annual output for a configuration proposal.
Work with the manufacturer
Pingxiang Xinchen Furnace manufactures these systems in Pingxiang City, Jiangxi Province, China, and ships worldwide with export packing, operation manuals and remote commissioning support. Send your material, capacity and application details to ferrytk898@gmail.com or WhatsApp +86 136 1799 5900 — our engineers reply with a quotation within one business day.
