“Carbon Powder” is not a complete enough purchasing condition. When used for carbon addition of cast iron or carbon adjustment for steelmaking, the buyer needs to also indicate the furnace type, base iron or steel type, addition stage, target carbon increment and trial method.
Look at chemical indicators and particle size together
Zhonghao catalog references include fixed carbon ≥81%, sulfur ≤0.3%, phosphorus ≤0.008%, ash ≤10%, and list 1–3, 3–5, and 3–8 mm particle sizes. The actual inquiry should also describe volatile matter, moisture, sampling and testing methods.
No pre-commitment to recovery rate
The dissolution rate and carbon recovery are affected by furnace conditions, temperature, slag system, adding position and particle size. The website only helps organize discussion fields and does not guarantee untested recovery rates or process effects.
Sources used for this article
- Zhonghao official product catalog page 2, Anhydrous Semi Coke Index