Zhengzhou Annec Industrial Co., Ltd.
Continuously Pushing Forward R& D of HBS for BF and Progress of Refractory Technology To Become Preferred Global Supplier in High Temperature Industry
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Super Fine Silica Fume / Silica Sand; Fused Silica Sandy / Refractory Raw Material is processed from the quality silica stone with high content of SiO2 and low impurity . Widely used for producing optical glass, refractory material and foundry.
| Item | Grade 1 | Grade 2 | Grade 3 | Grade 4 |
| SiO2 | 99.9%min | 99.8%min | 99.7%min | 99.5-99.6min |
| Fe2O3 | 30ppm | 60ppm | 100ppm | 150-300ppm |
Super Fine Silica Fume / Silica Sand; Fused Silica Sandy / Refractory Raw Material for optical glass , for its high content of SiO2, and low impurity.
Refined Silica Sand is processed from natural silica stone, for its high content of SiO2 and low impurity.
High purity Super Fine Silica Fume / Silica Sand; Fused Silica Sandy / Refractory Raw Material widely used for producing optical glass , refractory material, metallurgy, ceramic, foundries and abrasives etc.
