Arsam MetalARSAM METAL
Pasta elettrodica al carbonio (Söderberg)
Electrode PasteNUOVO

Pasta elettrodica al carbonio (Söderberg)

Söderberg electrode paste is a self-baking carbon mix of calcined anthracite, electrically calcined coal, and coke aggregate bound with coal-tar pitch. Charged into the casing of a continuous electrode, it softens at 70-110°C, flows to fill the column, then bakes in situ from furnace heat into a solid conductor. Controlled volatile matter (V.M 12-15.5%) escapes cleanly during that bake; a softening point held in this band prevents green-paste segregation and electrode breaks during slipping. Low resistivity (≤ 75 µΩ·m) and compressive strength ≥ 18 MPa let the column carry high current density and resist soft-tip and hard-break failures. The paste feeds submerged-arc furnaces for ferroalloy smelting (FeSi, FeMn, SiMn, FeCr) and calcium carbide production, where the self-baking electrode eliminates the pre-baked, machined graphite electrode. Fixed carbon ≥ 80% with ash ≤ 8% limits ash carry-over into the bath. Paste is graded standard or sealing/closed-top by V.M and softening point to match electrode diameter and slipping rate. Supplied with COA and MTC, multi-regional sourcing, CIF Marmara or Gebze bonded stock, 20 MT FCL. Send diameter and current rating for a graded RFQ.

Specifiche tecniche

F.C≥ 80%
Ceneri≤ 8%
V.M12-15.5%
Resistivity≤ 75 µΩ·m
Compressive Strength≥ 18 MPa
Softening Point70-110°C

Applicazioni

Applicazioni industriali
Submerged-arc furnaces
Ferroalloy smelting
Calcium carbide production
Self-baking electrodes

Domande frequenti

How do I choose the right electrode paste grade for my submerged-arc furnace?
Match the paste to electrode diameter and current density. Larger Söderberg electrodes and high power loads need low resistivity (≤ 75 µΩ·m here) and compressive strength ≥ 18 MPa to resist breakage. Confirm fixed carbon ≥ 80% and ash ≤ 8% for clean ferroalloy or calcium-carbide chemistry. The 70-110°C softening point governs paste flow into the casing, so align it with your baking-zone temperature profile and column descent rate.
What consumption rate should I expect and how is the paste added?
Paste is charged as cylinders or briquettes into the electrode casing above the contact clamps, then self-bakes as the column descends through the Söderberg zone. Consumption is driven by furnace power, not a fixed wt% dosage — typically expressed as kg of paste per ton of product and tied to your specific resistance load. Add in steady increments to keep a stable soft-paste height; avoid overfilling, which causes uneven baking, and underfilling, which risks hard breaks.
What packaging, lead time and minimum order apply?
The paste ships as cast cylinders or briquettes, palletized and moisture-protected for sea freight. Typical movement is full 20 MT FCL, with smaller LCL consignments available from Gebze bonded stock under CIF Marmara terms. Lead time depends on grade, format and consignment size; we confirm it against your delivery window at quotation. Share your electrode diameter and monthly burn rate so packaging format and call-off scheduling can be matched to your furnace.
What quality documentation and testing come with each lot?
Each lot ships with a COA covering fixed carbon, ash, volatile matter, resistivity, compressive strength and softening point against this grade. Sampling and analysis follow recognized ISO/ASTM carbon-product methods. MTC and third-party verification can be arranged on request. Lot traceability is maintained so any field result — column slip, hard break, or resistivity drift — can be checked back to the tested batch and its baking parameters.
Can this paste substitute for another electrode paste grade, and what are the alternatives?
Self-baking Söderberg paste is purpose-made for continuous electrode columns and is not interchangeable with pre-baked graphite electrodes used in EAF steelmaking. Within the Söderberg family, grades differ mainly in resistivity, ash and softening point; selecting a higher fixed-carbon, lower-ash variant suits calcium-carbide and high-purity ferroalloy duties. We source comparable grades through multi-regional channels, so if your current spec changes we can match resistivity and strength to keep your baking behavior stable.

Contatto rapido

Pasta elettrodica al carbonio (Söderberg) (Electrode Paste)

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