Brown Fused Aluminum oxide grit F20 F24 F30 F36 Sandblasting media
产品名称：棕刚玉，棕色氧化铝，棕色金刚砂
Product name：Brown Fused Alumina, Brown Aluminum oxide grit, Brown corundum, Aluminum oxide blasting media
Brown Fused Aluminum oxide grit F20 F24 F30 F36 Sandblasting media is a grinding material that balances grinding efficiency and cost. It is produced by high-temperature smelting of bauxite. Then it is crushed, magnetic separated to remove iron, and sieved into various particle sizes. Brown corundum has a dense texture, high hardness, good toughness, and high refractory temperature.
There are many types of brown corundum. According to the different contents of alumina, it is divided into primary brown corundum, secondary brown corundum, and tertiary brown corundum. According to the different smelting methods, it is divided into fixed furnace brown corundum and dump furnace brown corundum, among which the purity of dump furnace brown corundum is higher. According to the different crushing processes and particle shapes, it is divided into brown corundum roller sand and brown corundum mark sand, among which mark sand and brown corundum have a higher bulk density. According to the different particle size distributions, it can be divided into brown corundum F sand and brown corundum P sand. Among them, F sand is suitable for producing bonded grinding tools and sandblasting, while P sand is suitable for producing coated grinding tools. Product name：Brown Fused Alumina, Brown Aluminum oxide grit, Brown corundum, Aluminum oxide blasting media
Brown Fused Aluminum oxide grit F20 F24 F30 F36 Sandblasting media is a grinding material that balances grinding efficiency and cost. It is produced by high-temperature smelting of bauxite. Then it is crushed, magnetic separated to remove iron, and sieved into various particle sizes. Brown corundum has a dense texture, high hardness, good toughness, and high refractory temperature.
Brown Fused Aluminum oxide grit F20 F24 F30 F36 Sandblasting media是兼顾研磨效率和成本的研磨材料，它有铝矾土经过高温冶炼生产而来。然后破碎，磁选去铁，筛分成多种粒度。棕刚玉质地致密、硬度高、韧性好、耐火温度高。
棕刚玉的种类繁多。按照氧化铝含量不同，分为一级棕刚玉、二级棕刚玉、三级棕刚玉。按照冶炼方式的不同，分为固定炉棕刚玉和倾倒炉棕刚玉，其中倾倒炉棕刚玉的纯度更高。按照破碎工艺和颗粒形状的不同，分为棕刚玉对辊砂和棕刚玉马克砂，其中马克砂棕刚玉的堆积密度更高。按照粒度分布的不同，可分为棕刚玉F砂和棕刚玉P砂，其中F砂适合生产固结磨具和喷砂，P砂适合生产涂附磨具。
Brown Fused Aluminum oxide grit F20 F24 F30 F36 Sandblasting media features/特点：
1. 硬度高，磨削力强，比天然金刚砂的磨削性能优越。2. 韧性高，抗弯折能力强。棕刚玉的韧性比白刚玉略高一些，自锐性比白刚玉略低一些。
3. 经过磁选后的棕刚玉Fe2O3含量和磁性物含量都很低。
4. 棕刚玉的耐火性能好，在研磨过程产生的高温状态下，磨削性能依然很好。
5. 一级棕刚玉耐用度高，可循环使用。喷砂过程不粉化、碎屑少。
6. 棕刚玉粒度齐全，市场规模大，用户可以根据实际要求随意选择粒度。
对于质量要求高的用途，例如特殊喷砂和磨具产品，倾倒炉巴马克棕刚玉更具优势：
1.化学成分。倾倒炉棕刚玉氧化铝含量不低于95%，硅含量低于0.1%，低硅高钛的倾倒炉棕刚玉更适合生产陶瓷砂轮和制品。2.巴马克破碎工艺生产的棕刚玉粒型圆润，堆积密度大于颚式破碎机的堆积密度。
3.倾倒炉棕刚玉晶体集合体占比高，晶体尺寸比固定炉小，抗破碎能力强，韧性好，使用于磨具制品。
4.倾倒炉棕刚玉用于喷砂研磨，耐用度比固定炉更高。
Brown Fused Aluminum oxide grit F20 F24 F30 F36 Sandblasting media化学成分/Chemical：
| 类型粒度 | Al2O3 | SiO2 | Fe2O3 | TiO2 | |
| 固定炉 | F16 | 95-96 | ≤1.2 | ≤3.0 | 1.5-3.8 |
| F20 | 95-96 | ≤1.2 | ≤0.3 | 1.5-3.8 | |
| F24 | 95-96 | ≤1.2 | ≤0.3 | 1.5-3.8 | |
| F36 | 95-96 | ≤1.2 | ≤0.3 | 1.5-3.8 | |
| F60 | 94-95.5 | ≤1.2 | ≤0.3 | 1.5-3.8 | |
| F80 | 94-95.5 | ≤1.2 | ≤0.3 | 1.5-3.8 | |
| F220 | 93-95 | ≤1.4 | ≤3.0 | 1.5-4 | |
| 倾倒炉 | F16 | 95.5-97 | ≤1 | ≤0.25 | 1.7-3.4 |
| F20 | 95.5-97 | ≤1 | ≤0.25 | 1.7-3.4 | |
| F24 | 95.5-97 | ≤1 | ≤0.25 | 1.7-3.4 | |
| F36 | 95.5-97 | ≤1 | ≤0.25 | 1.7-3.4 | |
| F60 | 95-96.5 | ≤1 | ≤0.25 | 1.7-3.4 | |
| F80 | 95-96.5 | ≤1 | ≤0.25 | 1.7-3.4 | |
| F220 | 95-96 | ≤1 | ≤0.25 | 1.7-3.6 | |
Brown Fused Aluminum oxide grit F20 F24 F30 F36 Sandblasting media technical index/物理性能：
| 主要矿物 | Al2O3 |
| CAS编号 | 1344-28-1 |
| 英文名称 | Brown Fused Alumina |
| 莫氏硬度 | 9.0 |
| 显微硬度 | 2000-2200kg/mm2 |
| 熔点 | 2200 ℃ |
| 使用温度 | 1850℃ |
| 比重 | 3.95g/cm3 |
| 堆积密度(LPD): | 1.53-1.99 g/cm3 |
| 颜色 | 棕色 |
| 晶形 | 三方晶系 |
棕刚玉的堆积密度和磁性物含量：
| 类型粒度 | 堆积密度（g/cm3） | 磁性物含量（%） | |
| 固定炉 | F16 | 1.89-2.0 | ≤0.044 |
| F20 | 1.87-1.99 | ≤0.042 | |
| F24 | 1.86-1.96 | ≤0.038 | |
| F36 | 1.82-1.95 | ≤0.034 | |
| F60 | 1.75-1.86 | ≤0.026 | |
| F80 | 1.72-1.82 | ≤0.024 | |
| F220 | 1.55-1.65 | ≤0.018 | |
| 倾倒炉 | F16 | 1.91-2.03 | ≤0.044 |
| F20 | 1.90-2.02 | ≤0.042 | |
| F24 | 1.86-1.98 | ≤0.038 | |
| F36 | 1.85-1.96 | ≤0.034 | |
| F60 | 1.78-1.86 | ≤0.026 | |
| F80 | 1.74-1.85 | ≤0.024 | |
| F220 | 1.52-1.63 | ≤0.018 | |
Brown Fused Aluminum oxide grit F20 F24 F30 F36 Sandblasting media Application用途：
Sandblasting surface treatment of metals such as carbon steel, cast iron, and mold steel.
Sandblasting of mechanical drill rods, shaft sleeves, joints, oil pipes and other accessories.
Die cast aluminum and die cast steel cookware should be passivated on the surface before spraying.
Glass sandblasting and atomization.
Ceramic grinding wheel, heavy-duty grinding wheel, grinding wheel.
Resin grinding wheel, ultra-thin cutting disc, corner grinding disc, etc.
Grinding blocks, sponge grinding blocks, etc.
Ceramic components such as ceramic aerators for environmental protection equipment.
Wear resistant flooring and floor mortar aggregates.
碳钢、铸铁、模具钢等金属的喷砂表面处理。机械钻杆、轴套、接头、油管等配件的喷砂。
压铸铝、压铸钢炊具锅具喷涂前表面钝化。
玻璃喷砂雾化。
陶瓷砂轮，重负荷砂轮，磨轮。
树脂砂轮，超薄切割片，角磨片等。
抛磨块，海绵磨块等。
陶瓷元器件例如环保设备的陶瓷曝气器等。
耐磨地坪、地坪砂浆骨料。
Brown Fused Aluminum oxide grit F20 F24 F30 F36 Sandblasting media production process的生产流程：
Brown Fused Aluminum oxide grit F20 F24 F30 F36 Sandblasting media packing/包装：
