DC Submerged Arc Furnace Equipment

MOQ： 1 unit
Price： The price will be negotiated based on the technical requirements and supply scope of Party A
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Payment Terms	L/C,T/T,Western Union
Supply Ability	Complete production supply chain, supply on time, and meet quality standards
Delivery Time	2 months
Packaging Details	Discuss according to the specific requirements of Party A
Feature	Energy Saving
Product Class	DCS system
Marketing Type	Ordinary Product
Dimensions	Customizable based on model
Energyefficiency	High efficiency with energy recovery options
Device Type	DC electric arc furnace
Quality Authentication	ISO9001
Electrode Lift Type	PLCfrequency converting control
Application	Steel production, alloy manufacturing, metal recycling
Electrode Type	Carbon/graphite
Warranty	1 year
Brand Name	Shaanxi Chengda
Model Number	Negotiate based on equipment processing capacity
Certification	ISO 9001
Place of Origin	China

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Product Details
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Product Specification


Payment Terms	L/C,T/T,Western Union	Supply Ability	Complete production supply chain, supply on time, and meet quality standards
Delivery Time	2 months	Packaging Details	Discuss according to the specific requirements of Party A
Feature	Energy Saving	Product Class	DCS system
Marketing Type	Ordinary Product	Dimensions	Customizable based on model
Energyefficiency	High efficiency with energy recovery options	Device Type	DC electric arc furnace
Quality Authentication	ISO9001	Electrode Lift Type	PLCfrequency converting control
Application	Steel production, alloy manufacturing, metal recycling	Electrode Type	Carbon/graphite
Warranty	1 year	Brand Name	Shaanxi Chengda
Model Number	Negotiate based on equipment processing capacity	Certification	ISO 9001
Place of Origin	China
High Light	DC submerged arc furnace steelmaking equipment ，submerged arc furnace for steel production ，steelmaking DC arc furnace equipment

DC Submerged Arc Furnace Equipment Introduction

The DC submerged arc furnace is an efficient and energy-saving industrial smelting equipment. It replaces traditional three-phase AC submerged arc furnaces by converting alternating current into direct current for power supply, and is widely used in the production of ferroalloys (ferrosilicon, silicomanganese), industrial silicon, calcium carbide, and other products.

1. Core Working Principle

The core of the DC submerged arc furnace is to realize smelting using DC arc heat + resistance heat:

External alternating current is converted into stable direct current through the rectification system. The current passes through the cathode electrode at the top of the furnace, forming an arc between the cathode and the anode at the bottom (or wall) of the furnace.
The high temperature generated by the arc (up to 1600-2000℃), together with the resistance heat of the furnace charge itself, heats the charge to melt it and trigger reduction reactions, producing the required alloy products.
Compared with alternating current, direct current has no current zero-crossing phenomenon, so the arc is more stable, the heat is concentrated without skin effect, and the energy utilization rate is significantly improved.

2. Core Components of the Equipment

Module	Key Components	Functional Description
Furnace Body System	Furnace shell, furnace lining, furnace cover	The furnace shell provides structural support; the furnace lining is made of carbonaceous/refractory materials to withstand high temperature and corrosion; the furnace cover can be designed as a closed type to facilitate flue gas collection and treatment
Electrode System	Cathode electrode (graphite/self-baking electrode), furnace bottom anode	The cathode is responsible for inputting the negative direct current, and the furnace bottom anode (conductive refractory material) forms the positive loop; the electrode can realize automatic lifting adjustment
Power Supply System	Rectifier transformer, rectifier cabinet, short net	Steps down high-voltage alternating current and rectifies it into stable direct current; the short net adopts a low-impedance design to reduce power loss
Control System	PLC/automated control system	Real-time monitoring of current, voltage and electrode position, realizing millisecond-level adjustment to maintain stable furnace conditions and support remote monitoring
Auxiliary Systems	Flue gas recovery system, tapping and slagging device, cooling system	Treat smelting flue gas and recover waste heat; complete the discharge of molten iron and slag; ensure the cooling of key components (such as furnace wall and short net)

3. Key Technical Advantages (vs. AC Submerged Arc Furnace)

Significant Energy Saving: The power factor is stable above 0.95, and the power consumption per ton of product is reduced by 5%-15%; electrode consumption is reduced by 30%-50%, greatly lowering consumable costs.
Higher Smelting Efficiency: The arc is stable without fluctuation, the temperature field in the furnace is uniform and the heat is concentrated, the material melting speed is faster, the daily iron output can be increased by more than 30%, and the furnace bottom is less prone to rising.
Extended Equipment Service Life: The furnace lining is corroded uniformly, without the "hot spot" corrosion common in AC furnaces, and the service life of the furnace lining can be extended to more than 5 years (the industry average is 3-4 years).
Good Power Grid Compatibility: It has little harmonic interference to the power grid, eliminating the need for large-scale reactive power compensation devices and reducing supporting equipment investment.
Excellent Environmental Performance: The closed design enables full flue gas collection, facilitating dust removal and waste heat recovery, and significantly reducing the emission of dust and harmful gases.

4. Typical Application Scenarios

Ferroalloy Smelting: Ferrosilicon, silicomanganese alloy, high-carbon ferrochrome, etc., especially suitable for smelting high-melting-point and difficult-to-reduce ores.
Industrial Silicon Production: Stable temperature in the furnace leads to more sufficient reactions and higher product purity.
Calcium Carbide Smelting: Allows deep electrode operation with stable furnace conditions, greatly improving production efficiency.
Solid/Hazardous Waste Treatment: Some models can be used for harmless smelting and recovery of metal solid waste.

5. Core Technical Parameters (Take a typical 30MVA DC submerged arc furnace as an example)

Parameter	Indicator Range
Rated Capacity	12-80MVA (mainstream specifications)
Working Voltage	100-300V (DC)
Working Current	20-100kA
Furnace Temperature	1600-2000℃
Electrode Diameter	600-1500mm
Furnace Form	Circular/Rectangular (multi-electrode high-power models)

Company Details

Bronze Gleitlager

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Graphite Plugged Bushings

from Quality China Factory

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Business Type:

Manufacturer,Distributor/Wholesaler,Importer,Exporter,Trading Company,Seller 
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Year Established:

2003 


Total Annual:

10millionUSD-10million


Employee Number:

>139 


Ecer Certification：

Verified Supplier 

Shaanxi Chengda Industrial Furnace Manufacturing Co., Ltd. is a high-tech enterprise specialized in the research, design, and manufacturing of various industrial furnaces, including AC and DC steelmaking electric arc furnaces, ladle refining furnaces, ferroalloy ore thermal furnaces, ferroall... Shaanxi Chengda Industrial Furnace Manufacturing Co., Ltd. is a high-tech enterprise specialized in the research, design, and manufacturing of various industrial furnaces, including AC and DC steelmaking electric arc furnaces, ladle refining furnaces, ferroalloy ore thermal furnaces, ferroall...

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Shaanxi CHENGDA Industry Furnace MAKE Co., Ltd.
Room 1201, Greenland Blue Ocean Building, Zhanba Yi Road, Yanta District, Xi'an City, Shaanxi Province, China
https://www.sxcd-furnace.com/

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