Xuzhou fengbao mining co. Ltd. Is a major manufacturer of silica (quartz) products such as quartz tube, fused quartz, fused silica, high purity silica sand, silica powder, micro-silica powder, crystal powder, 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. Fused quartz (silica)
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. .
Fused quartz (silica) powder
Sio2: 99. 5-99. 9% max. ; fe2o3: 3-180ppm max. ; size: 4-2000mesh.
2. Quartz tube: Clear fused quartz tubing, ozone-free or germicidal quartz tubing, UV-block quartz tubing.
Quartz heater elements, quartz tube, carbon fiber quartz heater, halogen lamp, quartz heater lamp, quartz heater tubing, carbon heater, carbon fiber quartz halogen lamp, quartz plate, quartz products, quartz heater, quartz heater lamp, UV lamp, quartz electirc heater lamp
3. Quartz (silica) sand
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
4. 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.
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
