When sourcing High-Purity Quartz for TFT-LCD substrates, procurement and R&D teams naturally fixate on chemical analysis. Industry consensus requires Silicon Dioxide (SiO2) content to exceed 99.96%. Trace elements like Iron (Fe) and Titanium (Ti) must also be strictly controlled, typically under 50 ppm and 20 ppm respectively.
However, chemical purity is only half the battle. Many manufacturers secure high-purity quartz only to find their furnaces plagued by defects. Issues include micro-bubbles, un-melted stones, and inconsistent melting rates. The hidden killer is rarely the chemistry; it is the Particle Size Distribution (PSD).
The Danger of “Ultra-Fines”
For high-end display glass, the ideal quartz size typically falls within the 120-600 mesh range. Problems arise when traditional crushing generates excessive ultra-fine powder. These particles, finer than 600 mesh, remain trapped in the final product.
Why are these ultra-fines so destructive?
? Premature Melting: In furnaces, ultra-fine particles melt faster than larger grains. This premature vitrification traps gases, leading to irreversible micro-bubbles in the substrate.
? Dusting & Wear: Excessive fine powder becomes airborne easily. It adheres to the furnace crown, causing premature wear and contamination.
? Uneven Mixing: An irregular PSD leads to segregation during batch mixing. Consequently, the quartz does not interact uniformly with fluxing agents. This compromises the optical clarity of the display glass.
The LSFerroalloy Solution: Tailored Classification
At Anyang Lishi Industrial Co., Ltd, we understand that “good enough” is unacceptable for Tier-1 manufacturers. Our ISO9001-certified facility, established in 1999, features advanced mesh classification systems. We do not just crush quartz; we precisely classify it.
We utilize multi-stage air classification to strictly remove the < 600 mesh by-products. The result is a sharp PSD curve that guarantees uniform melting and reduces bubble defects.
For finer applications like Electronic-Grade Fiberglass, we offer a strictly controlled 325 mesh option. This ensures perfect integration into low-dielectric formulas.
Streamlining Your High-End Raw Material Supply
Securing the right quartz is critical, but efficient supply chain management matters too. LSFerroalloy operates a 45,000 sqm factory with an annual production of 100,000 tons. We are a globally recognized supplier of premium Sodium Feldspar, Potassium Feldspar, and Nepheline.
Add our validated High-Purity Quartz to your procurement matrix to consolidate sourcing. You can load mixed containers directly from our facility. This significantly optimizes your international freight and management costs.
Stop letting inconsistent PSD compromise your yield. Are you ready to see the data? Contact our engineering team at info@lsalloy.com today. Request the complete TDS and PSD curve for our TFT-grade High-Purity Quartz.