Graphite Electrodes

Pubdate: 06-11 2021

graphite electrode

Graphite Electrodes
Graphite electrode products have strict consumption control, low resistivity, low ash content, high temperature strength, low thermal expansion coefficient, good thermal conductivity and electrical conductivity, compact structure, high oxidation resistance, high mechanical stability and other significant advantages. Its content of UHP needle coke is up to 80%, and raw materials are imported from Japan and South Korea.

The UHP graphite electrodes suit the operating conditions of modern arc furnaces and those main properties are of decisive importance for obtaining economical consumption rates.

Why Choose Us
High output, with an annual output of 80,000 tons

We maintain a large inventory for Just-In-Time (JIT) delivery
ISO 9001-2015 Certified Suppliers for all products
Low resistivity, High temperature strength
Strict consumption control

Raw Materials and Production
Only a few choice raw materials have the ideal properties for making world-class carbon and graphite products. recipe is quality – from beginning to end. First petroleum coke, pitch coke, natural graphite, special coke are carefully selected. Then they are ground, classified, measured, and mixed, resulting in an ideal blend for every type of product. And to make sure things are being done just right, every process is constantly tested, monitored, analyzed, and controlled. Generations of experience and an innovative spirit help come up with optimal solutions.

Quality has priority. Everything is checked: raw materials, manufacturing, processes, final products.

Holding itself to the high-quality standards that control everything from incoming raw materials to final factory production. All materials are tested to ensure they meet industry standards before entering the manufacturing phase.

Ash ≤ 0.3%
UHP Needle Coke ≥ 80%

Technical Support
Has a group of experts in the field of servicing graphite electrodes. All of our technicians are trained engineers that have worked in furnaces or within graphite manufacturers in the past. We know all of the EAF, LF, and Foundry applications throughout China and the Middleast Countries.

Beyond the standard procedure of selling electrodes, we help our customers in many ways. This includes identifying a problem before it happens, increasing productivity, training employees on the job, and solving any problems the customer may have at that time. We offer many services including performance analysis, storage in our warehouses, inspection of accessories, and monitoring the furnace.

Engineers periodically check and measure the conditions of the electrode clamps on the electric arc furnaces and provide technical support when the clamping pressure is regulated.

Our experienced engineers offer all-around support to the customers for taking our UHP electrodes into operation. They check and analyze the customers’ furnace conditions in order to achieve an optimal performance of the graphite electrodes and a decrease of the specific electrode consumption.

Main Applications
Group-graphite electrode for eaf
Electric Arc Furnace (EAF)
Used in electric arc steelmaking furnace Graphite electrode is mainly used in electric furnace steelmaking. Electric furnace steelmaking uses graphite electrodes to introduce current into the furnace. A strong current generates an arc discharge through the gas at the lower end of the electrode, and uses the heat generated by the arc to smelt.

Carbon-graphite electrode for Ore-Heating Furnaces
Ore-Heating Furnaces
Used in ore-heating furnaces Graphite electrode ore-heating furnaces are mainly used to produce ferroalloys, pure silicon, yellow phosphorus, matte and calcium carbide, etc., which is characterized by electrical conductivity.

Carbon-graphite electrode for electric-resistance-furnace
Resistance Furnaces
For resistance furnaces, graphitization furnaces for producing graphite products, melting furnaces for melting glass, and electric furnaces for producing silicon carbide are all resistance furnaces.

The Production Process of Graphite Electrodes
Carbon-graphite electrode production process

Using Guide
Being hard and brittle, artificial graphite electrode shall be specially handled. Proper operation may reduce consumption and cost.

  1. Use special hoist tools to hoist graphite electrodes. It is strictly forbidden to prize electrode ends up with a crowbar. It must be handled with great care during transportation to avoid damage.
  2. Graphite electrode must be kept away from being moistened or wetted by rain, snow, and water, and must be kept dry. It must be dried in the furnace before use.
  3. The drying temperature in the furnace shall be less than 100℃. The drying period shall be not less than 48 hours.Not to be stored up near clay, slag, etc. to avoid surface pollution and increasing resistivity.
  4. Carefully checking before connection, make sure that the socked and nipple thread is not damaged, nipple pitch plug is in. Nipple screw shall not be damaged during lifting.
  5. Blow the nipple and socket threads with compressed air.
  6. Graphite electrode must be connected contacted closely and straightly. Use moment spanner for connecting electrode with suitable force. The gap between electrodes shall less than 0.4mm.
  7. The holding device must hold the electrode tightly, good contact and no arc. Otherwise, the connecting area will get red and oxidized and thin, leading breakage.
  8. The threaded portion of nipple socket shall not be damaged during hoisting by metal plug. Hoisting plug shall spin out and keep nipple socket clean.
  9. The lifting device of electrode must move stably when moving electrode. Carefully check the position of furnace cover after being repaired. To seal the cover with refractory to prevent up electrode from being oxidized by fire.
  10. The holding device of electrode shall hold the electrode beyond the socket area.

For charging the furnace, the large scrap should be put at the bottom, the small one on the top, Charge material with low electric conductivity shall not been put on the top. In the course of melting, un-melted material shall be taken in time to avoid electrode breaking by falling material.

Graphite Electrode

Model Resistivity Modulus of Rupture Young’s Modulus Bulk Density CTE Ash
RP: φ300-φ800mm 7.0-10.0 μΩm 8.0-10.0 Mpa 7.0-9.3 Gpa 1.53-1.56 g/cm³ 2.2-2.6 10-6/℃ 0.5%
HP: φ300-φ800mm 5.8-6.6 μΩm 10.0-13.0 Mpa 8.0-12.0 Gpa 1.64-1.68 g/cm³ 1.6-1.9 10-6/℃ 0.3%
UHP: φ300-φ500mm 4.8-5.8 μΩm 10.0-14.0 Mpa 9.0-13.0 Gpa 1.68-1.74 g/cm³ 1.1-1.4 10-6/℃ 0.3%
UHP: φ550-φ800mm 4.8-5.8 μΩm 10.0-14.0 Mpa 10.0-14.0 Gpa 1.68-1.74 g/cm³ 1.1-1.4 10-6/℃ 0.3%

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