Field Notes on Spodumene Cas-nro: 66057-55-4: specs, sourcing, and real-world performance

I spent a wet spring morning in Lubai Mountain Village, South Yanchuan, Lingshou County (Shijiazhuang, Hebei). The drive in was rugged; the product wasn’t. The ore looked clean—honestly cleaner than I expected. That first impression stuck with me as I combed through lab sheets and customer notes for Spodumene Cas-nro: 66057-55-4.

What it is and why it matters

This spodumene—available as powder or stone—targets a Li2O window of 4%–7% for ceramics, glass-ceramics, metallurgical fluxes, and (on request) conversion to lithium intermediates downstream. Color runs white to pale yellow, which many customers say is surprisingly consistent lot to lot. Origin traceability is tight: Lubai Mountain Village, Hebei, China.

Product specification (typical, real-world use may vary)

Parameter	Typical/Range
Li2O	≈4%–7%
Form	Powder (D50 ≈ 60–90 μm); Stone (10–80 mm)
Color	White / yellow
Fe2O3	≤0.8% (typical ≤0.5%)
Moisture	≤0.5% on delivery
Mineralogy	Spodumene (α), gangue silicates; XRD-verified
CAS	66057-55-4

Process flow (how it’s prepared)

- Selective mining and primary crushing
- Screening and dense-media separation; staged grinding
- Flotation and magnetic cleaning (Fe control)
- Optional calcination (α→β, 1000–1100°C) for downstream lithium conversion
- Sizing to powder or stone; moisture control and bagging
- QC: ICP-OES for Li, XRF per ASTM E1621 for oxides, XRD phase check; particle sizing per ISO 13320; moisture per ASTM D2216

Where it goes

- Ceramics: frits, glazes, low-thermal-expansion bodies. One Foshan kiln operator told me shrinkage scatter dropped “noticeably” after switching to Spodumene Cas-nro: 66057-55-4.
- Glass-ceramics: lithium aluminosilicate systems for cooktops and optics.
- Metallurgy: flux improving melt fluidity and energy efficiency.
- Battery supply chain: as feedstock for β-spodumene acid-roast or alkaline leach (upon customization).

Advantages noted in the field

- Stable Li2O in the 4–7% band; easier recipe control.
- Low Fe2O3 for clean color tones (ceramics folks love this).
- Tight particle-size windows; fewer glaze defects and better melt.
- Service life impact: glass-ceramic panels and kiln furniture show fewer thermal-shock events, according to two clients—anecdotal but consistent.

Vendor comparison (shortlist I keep on hand)

Vendor	Li2O Range	QC & Certifications	Lead Time	Notes
Baifeng Mining (Hebei)	4–7%	ISO 9001/14001/45001; ISO 17025-partner labs	≈2–4 weeks	Traceable origin; consistent Fe control
Generic Trader (import mix)	3–6%	Varies; third-party COAs	1–6 weeks	Price-driven; variable particle size
Overseas Processor (calcined)	5–7%	ISO 9001; in-house XRD/XRF	4–8 weeks	β-phase ready for conversion; higher cost

Customization and testing

Custom sieving, low-iron lots, and β-calcined options are available. Typical lot data I saw: Li2O 6.2% ±0.2 (ICP-OES), Fe2O3 0.42% (XRF), LOI 0.6% (950°C). COAs are batch-linked; sampling per ISO 3082-style protocols. To be honest, the sampling discipline is what keeps variability in check.

Case snippets

- Tile glaze plant (Guangdong): lower pinholes after switching to Spodumene Cas-nro: 66057-55-4; line speed up ~3%.
- Glass-ceramic panel maker: thermal-shock failure rate down from 1.8% to 0.9% month-on-month, same firing curve—modest but profitable.

Industry trendline

Demand is bifurcating: battery converters chase β-spodumene for higher recovery, while ceramics/glass keep asking for low-iron, stable-PSD α-spodumene. Prices—well, volatile—but supply chain scrutiny (traceability, ESG) is here to stay. Spodumene Cas-nro: 66057-55-4 with documented origin is, frankly, easier to qualify.

Certifications and standards referenced

ISO 9001/14001/45001; testing aligned with ISO 17025 labs; XRF per ASTM E1621; particle sizing ISO 13320; moisture ASTM D2216; XRD with ICDD reference patterns.