Black Fused Alumina (BFA-L)
Electro-fused in arc furnaces from bauxite and high-iron additions, producing an alpha-alumina and hercynite spinel crystal structure. Delivers high tenacity, reduced grinding heat generation, and superior bonding retention for stainless steel polishing and non-slip flooring.
Direct Gongyi Plant Processing & Sizing Precision
Every batch of Black Fused Alumina (BFA-L) is refined, crushed, magnetically separated, and precision-screened in our 35,000 m² Gongyi facility—eliminating middleman quality variation and ensuring strict adherence to international industrial standards.
Strict Raw Material Selection & Thermal Processing
Processed from selected high-grade raw ore under tightly monitored kiln/furnace temperature profiles to guarantee consistent chemical purity, specific gravity, and mechanical durability across every 20' FCL load.
Narrow Particle Size Distribution & Zero Oversize Contamination
High-frequency vibrating screens and air classification lines remove dust and oversize particles, ensuring uniform packing density and predictable industrial performance.
In-House XRF Assay & Signed COA with Every Shipment
Tested in our ISO 9001:2015 metrology lab for chemical composition, moisture, bulk density, and sieve retention prior to container sealing.
Chemical & Grading Technical Datasheet
Tested in our Gongyi plant laboratory prior to shipment. Every export container includes a batch-specific Certificate of Analysis (COA).
| Grade / Size Range | Al₂O₃ (%) | Fe₂O₃ (%) | SiO₂ (%) | TiO₂ (%) | Bulk Density (g/cm³) | Primary Industrial Use |
|---|---|---|---|---|---|---|
| Grade A Macro (F16 – F60) | 80.0% – 85.0% | 8.0% – 11.0% | ≤ 4.0% | ≤ 4.0% | 1.75 – 1.90 | Stainless Steel Polishing & Blasting |
| Grade A Fine (F70 – F220) | 78.0% – 83.0% | 9.0% – 12.0% | ≤ 4.5% | ≤ 4.0% | 1.65 – 1.80 | Coated Emery Cloth & Flap Discs |
| Wear-Resistant Aggregate (1-3 / 3-5mm) | ≥ 75.0% | 9.0% – 14.0% | ≤ 5.5% | ≤ 4.5% | 1.80 – 1.95 | Epoxy Non-Slip Flooring & Bridge Decks |
Standard Seaport Export Staging
- 25kg Bags + Pallet: 40 × 25kg multi-ply moisture-proof bags shrink-wrapped on a 1,000kg ISPM-15 fumigated wooden pallet.
- 1,000kg Jumbo Bags: Heavy-duty woven PP FIBC bulk bags with top/bottom spouts and PE moisture liner.
- Container Capacity: 20 – 26 Metric Tons per 20' GP container.
- Port of Loading: Qingdao / Tianjin / Shanghai (7–10 days dispatch).
Primary Industrial Sectors & Use Cases
Engineered for reliable performance across heavy industrial manufacturing, surface preparation, and thermal processing.
Stainless Steel & Metal Polishing
Lower elastic modulus than WFA prevents surface burning and micro-scratching during high-speed buffing of stainless steel cookware and hardware.
Coated Abrasive Belts & Discs
High iron-oxide content enhances adhesion to animal glue and phenolic resin binders on flexible abrasive cloth belts.
Heavy-Duty Sandblasting
Economical, reusable mineral blasting medium for mill scale and rust removal on structural steel and ship hulls.
Anti-Skid Industrial Flooring
1-3mm and 3-5mm aggregates broadcast into epoxy and polyurethane industrial floors and highway ramps.
Frequently Asked Questions
Key technical parameters, grit sizing standards, and export logistics for Black fused alumina abrasive.
Can you customize particle sizes according to our technical requirements?
Yes. Gongyi Fengtai possesses automated multi-deck sieving lines and air classification systems capable of screening custom mesh sizes, FEPA, JIS, ANSI, or proprietary buyer grain distributions.
How can I request free testing samples?
Simply fill out the inquiry form below or message our sales team on WhatsApp (+86-158-3803-2047). We arrange 1kg to 2kg trial samples dispatched worldwide via DHL/FedEx.
What are your export shipping terms and accepted payment methods?
We offer FOB Qingdao/Tianjin, CIF, CFR, and DDP shipping terms. Accepted payment methods include T/T (Telegraphic Transfer) and irrevocable Letter of Credit (L/C) at sight.
Request Quote & Free Samples
Submit your required specs. Our technical sales engineers respond within 4 hours during business days.