Iron briquette

When evaluating Iron Briquettes (HBI/DRI), the most critical factor is the Total Iron (Fe) content, which should typically be above 90% for high-quality smelting. You must also verify the Metallization Ratio (ideally >92%) and the levels of impurities such as Sulfur (S) and Phosphorus (P), as high concentrations can embrittle the final steel product. Additionally, check the physical density (should be >5.0 g/cm³) to ensure the briquettes sink through the slag layer in Electric Arc Furnaces (EAF).

Iron briquettes are prone to breakage and 'fines' generation during handling. Request a Tumble Strength test (ISO 10835) report from the supplier; a high-quality product should have a Tumble Index (+6.3mm) of at least 85-90%. This ensures the material maintains its structural integrity during transshipment and conveyor belt loading, preventing significant material loss and dust pollution.

Direct Reduced Iron (DRI) and briquettes are classified under the IMSBC Code (International Maritime Solid Bulk Cargoes). For 'Briquettes, Hot Moulded' (HBI), they are generally categorized as Group B (MHB - Materials Hazardous only in Bulk) due to the risk of hydrogen evolution and self-heating. Ensure the supplier provides a Material Safety Data Sheet (MSDS) and follows IMO regulations for ventilation and temperature monitoring during sea freight.

Iron Briquettes are primarily used as a high-quality scrap substitute in Electric Arc Furnaces (EAF) and Basic Oxygen Furnaces (BOF). They are ideal for producing low-nitrogen, high-grade steel (such as automotive or flat products) because they contain fewer tramp elements (Copper, Tin, Zinc) compared to traditional steel scrap. They are also used in foundries to adjust the chemical composition of the melt.

For bulk commodities like iron briquettes, never rely solely on the supplier’s in-house lab report. Mandate a Pre-shipment Inspection (PSI) by a reputable third-party agency like SGS or Intertek. The inspector should perform random sampling from the stockpile or during loading to verify the Fe content and moisture levels. Ensure the contract specifies that the final invoice price is adjusted based on the actual Fe content found at the port of loading.

Given the high transaction value, use Letter of Credit (L/C at sight) to protect your capital. For shipping, FOB (Free On Board) is often preferred by experienced buyers to maintain control over the vessel selection and insurance, which is crucial given the hazardous nature of DRI/HBI. If using Made-in-China.com, prioritize Diamond Members or Audited Suppliers who have a proven track record in mineral and metal exports.

The cargo must be kept strictly dry. Moisture can trigger a chemical reaction that releases hydrogen gas, which is explosive, and causes self-heating. Ensure the shipping vessel has surface ventilation capabilities and that the supplier provides a Certificate of Moisture Content confirming it is below the Transportable Moisture Limit (TML). Avoid loading during rain or high humidity conditions.

Many regions, particularly the EU, are implementing Carbon Border Adjustment Mechanisms (CBAM). Sourcing Iron Briquettes produced using Natural Gas or Hydrogen (rather than coal) can significantly reduce your carbon footprint and potential import taxes. Ask suppliers for their Carbon Intensity Certificate to ensure future alignment with international environmental regulations.