Brown corundum abrasive for the production of abrasive cloth abrasive belts Brown corundum for the production of louver shutters
Brown corundum is made of high-quality bauxite, iron filings, and anthracite in an electric arc at high temperature. It is crushed and shaped by an autogenous mill, iron is removed by magnetic separation, and it is sieved into various particle sizes. The main chemical component is Al2O3, and its content is 92%. –97%, and also contains a small amount of Fe, Si, Ti, etc. It has dense texture, high hardness, tan color, high toughness, and spherical particles. It is suitable for manufacturing ceramics, resin high-consolidation abrasives, grinding, polishing, sandblasting, precision casting, refractory materials, etc.
| Physical properties of brown corundum | |||||
| color | brown | ||||
| Moh’s hardness | ≥8.9 | ||||
| crystal form | Trigonal system | ||||
| melting point | 2250℃ | ||||
| Maximum operating temperature | 1900℃ | ||||
| proportion | 3.95 | ||||
| Bulk density | 1.53-1.99g/cm³ | ||||
| true density | ≥3.90g/cm³ | ||||
| Brown corundum chemical index and model | |||||
| granularity | Chemical composition | Specification | |||
| A l 2 O 3 | S iO2 _ _ | Fe2O3 _ _ _ | TiO2 _ | ||
| Duan sand | ≥95 | ≤1.5 | ≤0.5 | ≤3 | 0-1/3/5/8mm |
| powder | ≥92 | ≤2 | ≤0.55 | ≤3.3 | 0-100/200/300/325 # |
| Granular sand | ≥95 | ≤1.5 | ≤0.5 | ≤3 | 8-220 # |
| Micronized | ≥92 | ≤2 | ≤2 | ≤4 | W63-W0.5(“W”标） |
| F230-F1200(“FEPA”Target) | |||||
| 240#-3000 #（“JIS”Target) | |||||
| Brown corundum is called industrial teeth: mainly usedRefractories, sandblasted grinding surface treatment,Consolidation abrasives,Coating molds, etc。 1, Used in the manufacture of advanced refractory materials, castables, refractory bricks, etc.2, sandblasting——The abrasive hardness is moderate, the bulk density is high, there is no free silica, the specific weight, the toughness is good, it is ideal“environmental protection”Type sandblasting materials, widely used in aluminum profiles, copper profiles, glass, washed jeans precision molds and other fields;3, free grinding——Grinding grade abrasives, used in picture tubes, optical glass, single crystal silicon, lenses, watch glass, crystal glass, jade and other fields of free grinding, is a commonly used advanced grinding material in China;4, resin abrasive——The abrasive has suitable color, good hardness, toughness, suitable particle section type and cutting edge retention, which is used in resin abrasives with ideal effect;5, coated abrasives——Abrasives are the raw materials of sandpaper, gauze and other manufacturers; 6. Functional filler – mainly used for automobile brake parts, special tires, special construction products, etc., and can be used as wear-resistant materials for building highway pavements, airstrips , docks , parking lots , industrial floors , sports venues, etc .; 7. Filter medium —— a new application field of abrasives. Granular abrasives are used as the bottom medium of the filter bed to purify drinking water or waste water. It is a new type of water filter material at home and abroad, especially suitable for non-ferrous metal beneficiation: oil drilling mud weighting agent : 8. Hydraulic cutting —— Using abrasives as the cutting medium, relying on high-pressure water jets for basic cutting, it is applied to the cutting of oil (natural gas) pipelines, steel and other components. It is a new, environmentally friendly and safe cutting method . | |||||
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