Xuzhou Fengbao Mining Com.Ltd.

Xuzhou Fengbao Mining Co. Ltd. is a major manufacturer of silica
(quartz) products such as quartz stone, high purity silica sand,
silica powder, microsilica powder, crystal powder and fused silica
lump and powder, quartz tube, etc. These products are widely used as
materials for (optical) glass, optical fiber, electrical, electronic,
semiconductor, epoxy molding compound (EMC), paint, coating, ceramic,
chemical, building, foundry, precision casting, refractory and
abrasives industries etc. The detailed specifications are as follows:

1. Quartz (Silica) Sand powder and stone

high purity grade: SiO2:99.60%min-99.98%min ; Fe2O3 :1-35ppm Max.; size:2-200 mesh

refined grade: SiO2 :99.50%min-99.90% min ; Fe2O3 : 50-300ppm Max.; size:2-325 mesh

General grade:SiO2 :98.00%min-99.50% min ; Fe2O3 : 400 -1200ppm Max.; size:2-400 mesh

2. Quartz (Silica) Stone

special grade: SiO2: 99.96%min; Fe2O3: 4ppm Max.

1st grade: SiO2: 99.90%min; Fe2O3: 40ppm Max.

2nd grade: SiO2: 99.80%min; Fe2O3: 100ppm Max.

3rd grade: SiO2: 99.60%min; Fe2O3: 300ppm Max.

3. Fused Quartz (Silica) lump

1st grade: SiO2: 99.9% min; Fe2O3: 30ppm Max.

2nd grade: SiO2: 99.8% min; Fe2O3: 60ppm Max.

3rd grade: SiO2: 99.7% min; Fe2O3: 100ppm Max.

4.Fused Quartz (Silica) Powder
1st grade: SiO2: 99.9% min; Fe2O3: 30ppm Max. 4-2000mesh as per buyer's spec.

2nd grade: SiO2: 99.8% min; Fe2O3: 60ppm Max. 4-2000mesh as per buyer's spec.

3rd grade: SiO2: 99.7% min; Fe2O3: 100ppm Max. 4-2000mesh as per buyer's spec.

4rd grade SiO2: 99.5-99.6% min; Fe2O3: 150-300ppm Max.4-2000mesh as per buyer's spec.

5. Microsilica Powder

(1) SiO2: 99.90%min; Fe2O3: 10ppm Max.; Al2O3 :50ppm Max; size:300 mesh

(2) SiO2:99.80%min; Fe2O3: 50ppm Max.;Al2O3 :50ppm Max;size:400 mesh

(3) SiO2:99.70%min; Fe2O3:100ppm Max.;Al2O3 :60ppm Max; size :600 mesh

6.NATURAL CRYSTAL POWDER

SiO2: 99.90%min-99.99%min , size:2-300 mesh

7.QUARTZ TUBE