棕刚玉80#Brown Fused Alumina的特点和用途
棕刚玉80#Brown Fused Alumina, 磨料代码A，俗称金刚砂。棕刚玉由氧化铝含量76%左右的铝矾土、炭素材料、铁屑等原材料经2200°高温电熔冶炼而来。棕刚玉80#一级砂从棕刚玉一级块料破碎而来，再经过筛分、磁选等工艺生产，适合研磨和喷砂。
Brown Fused Alumina 80 #, abrasive code A, commonly known as diamond sand. Brown corundum is produced by smelting raw materials such as bauxite, carbon materials, and iron filings with an alumina content of about 76% at a high temperature of 2200 ° C. Brown corundum 80 # first grade sand is crushed from brown corundum first grade block material, and then produced through screening, magnetic separation and other processes, suitable for grinding and sandblasting.
PRODUCT/产品: Brown Fused Alumina F80/棕刚玉F80
Other Name：Brown Aluminum oxide 80mesh/Brown Corundum/Brown Electrocorundum 14A F80
CHEMICAL COMPOSITION/化学成分:
| Item | Guarantee Value/保证值（%） | Typical Value/典型值（%） |
| Al2O3 | ≥95 | 95.12 |
| Fe2O3 | ≤0.3 | 0.19 |
| SiO2 | ≤1.2 | 1.06 |
| TiO2 | 1.5-3.8 | 2.74 |
| CaO | ≤0.45 | 0.28 |
| Magnetic Content | ≤0.05 | 0.04 |
PHYSICAL PROPERTIES/物理指标:
| Specific Weight/比重 | Hardness/硬度 | Bulk Density/堆积密度 | Melting Point/熔点 |
| 3.95 g/ cm3 | 9.0Mohs scale | 1.62-1.71g/cm3 | 2050℃ |
PARTICLE SIZE DISTRIBUTION/粒度分布:
| Grit粒度 | Mesh# | Mesh size(um) | Weight Standard(%) | Typical Value(%) |
| Coarsest Grit最粗粒 | +50 | 300 | 0 | 0 |
| Coarse Grit粗粒 | +70 | 212 | Max. 25 | 4.0 |
| Basic Grit基本粒 | +80 | 180 | Min. 40 | 56.4 |
| Mixed Grit混合粒 | +80 +100 | 180 150 | Min. 65 | 87.5 |
| Fine Grit细粒 | -120 | 125 | Max. 3 | 0.8 |
APPLICATIONS/应用场景：
- Bonded Abrasives/ 固结磨具
- Wear Resistance Floor/ 耐磨地坪
- Alumina Ceramics/ 氧化铝陶瓷
- Refractory/ 耐火材料
- Blasting/ 喷砂
