Carbon Electrode Paste FAQ for Ferroalloy and Calcium Carbide Furnaces

The paste is used in self-baking electrodes for high-temperature electric furnaces. The listed applications include ferroalloy and calcium carbide production, as well as other ore furnaces. A submerged arc furnace's design parameters determine the electrode quality requirements, so buyers should provide the furnace type and electrode requirements when requesting a quotation.

The product page lists three shapes: cylinder, trapezoid, and oval, also called egg type. These shapes are intended to suit different furnace designs. A procurement team should send the required electrode geometry or furnace drawing with its inquiry so the supplier can match the requested shape to the project.

The product range includes airtight, standard, and chemical electrode paste. The listed maximum ash content is 4.0 to 6.0% for airtight paste, 7.0 to 11.0% for standard paste, and 11% for chemical paste. Maximum volatile matter is listed as 12.00 to 15.50%, 9.50 to 15.50%, and 11.0 to 15.5%, respectively. Maximum resistivity is listed as 65 to 75 μΩm, 80 to 90 μΩm, and 90 μΩm. Minimum compressive strength is listed as 17 to 18 MPa, 20 to 22 MPa, and 18 MPa. Volume density is listed as 1.37 g/cm³ for all three grades in the table.

A separate product listing describes high-carbon, graphite-based paste with apparent density above 1.42 g/cm³, moisture of 2%, and crushing strength above 18 MPa. Treat these figures as product or grade-specific when comparing quotations, and identify the required grade in the purchase inquiry.

The production description states that petroleum coke and asphalt are placed in a melting tank for dehydration and melting, then kneaded, molded, and sintered. Another description lists electric calcined coal, asphalt, and coal tar as raw materials and identifies Taixi coal as a key component for the premium product listing. The applicable formulation depends on the selected product and furnace requirement.

The premium product listing gives standard export packaging and a minimum order quantity of 20 tons, described as one 20-foot full-container load. The other product listing describes packaging on a wooden pallet with a bag or in bulk, and also lists jumbo-bag or bulk packaging. Confirm the packaging format and quantity against the selected grade, shape, and shipping plan before placing the order.

Send the furnace type, electrode shape, required grade, target quantity, packaging preference, destination, and any furnace or electrode drawing. These details allow the supplier to assess the match between the paste and the furnace design. The premium listing also describes T/T and L/C at sight as available payment options, with FOB, CFR, and CIF support, and gives a delivery time of 2 to 3 weeks after deposit for that listing. Ask for the commercial terms for the exact product configuration in the same inquiry.

For a technically useful quotation, include the required ash, volatile matter, resistivity, compressive strength, and density ranges, along with the shape and quantity. Also state whether the order is for airtight, standard, chemical, or another specified grade.