ซิลิกาฟูม vs ฟิวส์ซิลิกา: ความแตกต่างที่ผู้ซื้อต้องรู้

## Overview Silica fume and fused silica are both high-SiO₂ materials but differ significantly in production, particle size, purity and cost. ## Property comparison | Property | Silica Fume | Fused Silica | |----------|-------------|--------------| | SiO₂ content | 85%–98% | ≥ 99% | | Average particle size | 0.1–0.5 μm | 0.1–100 μm | | Particle shape | Spherical | Angular | | Bulk density | 200–700 kg/m³ | 600–1,500 kg/m³ | | Cost per ton | Lower | Higher | ## How to choose 1. Need a pozzolanic additive for concrete? → Silica fume 2. Need high-purity filler or crucible raw material? → Fused silica 3. Budget-sensitive with moderate purity needs? → Silica fume 4. Very low iron content required (< 0.01%)? → Fused silica ## What buyers should clarify Before inquiry, specify the target application, minimum SiO₂ required, acceptable particle size range and monthly volume.