棕剛玉80#Brown Fused Alumina的特點(diǎn)和用途
棕剛玉80#Brown Fused Alumina, 磨料代碼A，俗稱(chēng)金剛砂。棕剛玉由氧化鋁含量76%左右的鋁礬土、炭素材料、鐵屑等原材料經(jīng)2200°高溫電熔冶煉而來(lái)。棕剛玉80#一級砂從棕剛玉一級塊料破碎而來(lái)，再經(jīng)過(guò)篩分、磁選等工藝生產(chǎn)，適合研磨和噴砂。
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/產(chǎn)品: Brown Fused Alumina F80/棕剛玉F80
Other Name：Brown Aluminum oxide 80mesh/Brown Corundum/Brown Electrocorundum 14A F80
CHEMICAL COMPOSITION/化學(xué)成分:
| Item | Guarantee Value/保證值（%） | 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/物理指標:
| Specific Weight/比重 | Hardness/硬度 | Bulk Density/堆積密度 | Melting Point/熔點(diǎn) |
| 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細粒 | -120 | 125 | Max. 3 | 0.8 |
APPLICATIONS/應用場(chǎng)景：
- Bonded Abrasives/ 固結磨具
- Wear Resistance Floor/ 耐磨地坪
- Alumina Ceramics/ 氧化鋁陶瓷
- Refractory/ 耐火材料
- Blasting/ 噴砂
