Product Description
1. Properties of quartz: Quartz is one of the most common and common raw materials of siliceous minerals. The main component is SiO2 , the density is 2.65g / cm3, the Mohs hardness is 7 . . The appearance is colorless, white, turquoise, etc.
2. quartz main purposes: quartz sand (powder) is mainly used for glass, refractories, ceramics, casting, petroleum, chemical, environmental, grinding and other industries.
3. Quality Standard of Quartz:
Chemical composition indicators used in the glass industry
Grade | SiO2 | Al2O3 | Fe2O3 | TiO2 | Cr2O3 | Remarks |
First grade | ＞99 | ＜0.5 | ＜0.05 | ＜0.05 | ＜0.001 | For special technical glass |
Level 2 | ＞9 8 | ＜1.0 | ＜0.1 | Industrial technology and advanced utensils | ||
Level 3 | ＞96 | ＜2.0 | ＜ 1 | For tinted glass |
Chemical composition indicators used in the ceramic industry
use | SiO2 | Fe2O3 | Al2O3 | TiO2 | K2O Na2O3 | CaO | MgO |
Electric porcelain | ＞99.5 | ＜0.01 | ＜0.2 | ＜0.1 | ＜0.1 | ＜0.1 | |
Electric porcelain | ＞98.5 | ＜0.05 | ＜0.1 | ＜0.1 | ＜0.1 | ＜0.1 | |
Building, daily ceramics | ＞98.5 | 0.5 |
Chemical composition index for metallurgical industry
Use | SiO2 | Al2O3 | Fe2O3 | CaO | P2O5 | TiO2 | Refractory degree ℃ |
Special grade for silicon brick | ≥ 98 | ≤ 0.5 | ≤ 0.5 | ≤ 0.5 | 1750 | ||
First-class products for silicon brick | ≥ 97.5 | ≤ 1.0 | ≤ 1.0 | ≤ 0.5 | 1730 | ||
Second grade products for silicon brick | ≥ 96.5 | ≤ 1.5 | ≤ 1.5 | ≤ 1.5 | 1710 | ||
First-class products for ferrosilicon | ≥ 97.5 | ≤ 1.0 | ≤ 0.3 | ≤ 0.02 | |||
Secondary products for ferrosilicon | ≥ 96.5 | ≤ 1.5 | ≤ 1.0 | ≤ 0.03 |
4 , the main specifications quartz: 4-6 mesh , 6-10 mesh , 10-20 mesh , 40-70 mesh , 100-200 mesh , 270 mesh , 325 mesh , 400 mesh , 500 mesh and a variety of quartz gravel .
