FeSi 72% 75% Granules for Foundry Inoculation Cast Iron Treatment and Metallurgical Processing

Between treatment and pouring there is a window, and the inoculant has to still be working at the end of it. ZHENAN's answer is two screened granule grades with two distinct working points: FeSi 72 (Si ≥72%, Al ≤2.0%) — the inoculant gray and ductile foundries have standardized on for decades — and FeSi 75 (Si ≥75%, Al ≤1.5%), where the recipe wants more silicon from the same dose.

What makes both reliable is discipline in sizing: 0–3 mm and 3–10 mm stock windows, 0.3–1 / 1–3 / 3–8 mm splits sieved to order, a sieve check before every packing, and the size distribution printed on the certificate. The grades are never blended, so whatever your calibration curve was built on is exactly what lands in the foundry.

ZHENAN (Zhenan Metallurgy Co., Ltd) screens both granule grades at its ISO 9001 certified works in Anyang, Henan, China; model codes FeSi 72 granules and FeSi 75 granules. Calibration consistency is the production rule: the sieve data printed on the certificate is the data your dosing equipment was set against.

The chemistry below is guaranteed per lot; the sieve windows ship beside it on the same paper.

• Splits of 0.3–1, 1–3 and 3–8 mm are sieved against order for dedicated treatment points.
• Aluminium-sensitive ductile programs move to the ≤0.5% low-Al 75.
• Sieve check ahead of packing; the distribution prints on the lot certificate.

• Thin-section gray iron work: chill held down where the casting freezes fastest.
• Ductile programs: nodule count and shape built in the interval after magnesium treatment.
• Stage-matched dosing: coarser windows at the ladle, finer at the stream, finest in-mold or in the late shot.
• Pre-treatment conditioning inside the induction furnace.
• Automated processing lines that meter granules more cleanly than lump.

• Grade for each treatment (72 or 75) and the granule window each treatment point takes;
• Custom splits if the equipment demands 0.3–1, 1–3 or 3–8 mm;
• Packing: jumbo bags for bulk storage, 25 kg moisture-proof bags for line-side use;
• Documents: certificate of analysis with sieve report per lot; SGS or BV on request;
• Volume and terms: no fixed MOQ; dispatch 5–10 working days from payment; L/C, T/T or Western Union; 2,000 MT monthly capacity behind the program.

To quote accurately, please send us:

1. The alloys you pour and their section thickness range;
2. Where inoculant enters your loop, and how long the metal travels before pouring;
3. Sieve windows per addition point;
4. Monthly consumption and the discharge port.