01
Aluminium anodes
The largest single use. Sulphur and real density control smelter emissions and anode consumption.
Product line 02
Calcined Petroleum Coke
CPC · Anode & graphite gradeCalcined petroleum coke is the workhorse of the carbon chain. Green coke is fired in a rotary kiln at 1,200–1,300 °C, driving off the remaining volatile matter and leaving a dense, stable carbon. Almost every other product in this chain starts here — including the electrode bodies made from GPC.
Fixed carbon
≥ 98.5 %
Sulphur
≤ 0.5 – 1.0 %
Real density
≥ 2.06 g/cm³
Size
0–5 / 5–25 mm
Product
What it looks like.
Photographs of the material as it is packed and shipped. Sample the actual lot before you commit to a contract.
Specification
Technical data.
Typical values for standard export grades. Tighter limits and customer-specific specifications are quoted on request.
| Parameter | Calcined Petroleum Coke |
|---|---|
| Fixed carbon | ≥ 98.5 % |
| Sulphur | ≤ 0.5 – 1.0 % |
| Ash | ≤ 0.5 % |
| Volatile matter | ≤ 0.8 % |
| Real density | ≥ 2.06 g/cm³ |
| Moisture | ≤ 0.5 % |
| Particle size | 0–5 mm · 5–25 mm · 25–50 mm |
| Bulk density | ≥ 0.80 g/cm³ |
| Packing | 25 kg bags · 500–1000 kg jumbo bags |
| Loading port | Tianjin · Qingdao |
| Standard use | Anode, electrode production, recarburiser |
Values are typical for standard export grades and are confirmed per contract. Anode-grade and graphitisation-grade material are quoted separately.
Ordering
What to specify when you order.
The six points that decide whether the material works in your process. Anything unclear, ask before you order.
- Grade
Tell us whether this is anode grade, graphitisation feed or recarburiser grade. The three accept different sulphur and density limits.
- Carbon
Fixed carbon ≥ 98.5 % covers most industrial use. Specify higher only when the process genuinely requires it.
- Real density
Set by the kiln, and the fastest way to judge whether a supplier actually controls calcination. Low density means under-fired coke.
- Volatile matter
Must stay low or the coke will smoke and fume at the anode plant and foul handling equipment.
- Size
Crusher feed, anode-grade or sized fractions. We grade to your kiln and your press.
- Documents
Request the assay before loading. We report the real figures, not the grade label.
Applications
Where it is used.
If your process is not listed, tell us the furnace and the duty and we will say whether this grade fits.
02
Graphite electrode production
Both as the graphitisation feed and as the aggregate and filler fraction mixed into the electrode body.
03
Recarburising
Steel and foundry melts, where predictable dissolution matters more than absolute carbon purity.
04
Ferroalloy and calcium carbide
Submerged arc furnaces need a reductant with stable carbon and low ash.
Questions
What buyers ask first.
Answers here are the short version. If your question is not on this list, ask and we will answer directly.
What grade of CPC should an aluminium smelter use?
Anode grade, with sulphur controlled as tightly as the smelter's emission limit allows — typically 0.5 % or lower — and real density ≥ 2.06 g/cm³. Real density is what tells you whether the kiln actually fired the material to completion.
Is calcined coke suitable for recarburising?
Yes, and it is usually better than raw coke for the job: it is denser, has lower volatile matter and dissolves more predictably into the melt. Specify particle size to match your furnace practice.
Can you supply CPC for electrode production?
Yes. We supply both graphitisation feed and the sized aggregate and filler fractions used in the electrode body mix. Tell us the recipe fractions and we will size to them.
Do you provide samples before a bulk order?
Samples are available for evaluation orders so you can run your own assay and furnace trials before committing the bulk quantity.
Other lines
The rest of the chain.
We trade across all three stages, so you can hold one supplier accountable from coke through to finished electrode.
01
Graphite Petroleum Coke
Graphite petroleum coke (GPC) supplied to a written specification, with particle size and packing fixed before production.
View specification → 03Graphite Electrode
Machined graphite electrodes in RP, HP and UHP grades, Ø150–700 mm, supplied in matched sets with fitted nipples.
View specification →Request a quote
Send us the specification you need to meet.
Tell us the grade, the tonnage and the port. We reply with a written specification and a price — usually within one working day.
- Emaillink@lunxingtech.com
- WhatsApp+86 173 2561 0020
- ResponseWithin 1 working day
- TermsFOB Tianjin / Qingdao · CIF
- SamplesAvailable for evaluation orders