Black corundum, also known as low-aluminum corundum, is also a new derivative of Ruishi Company in the production of brown corundum. It is a gray-black crystal with α-Al2O3 and iron spinel as the main ore phase prepared by melting bauxite in an electric arc furnace. It is characterized by a low Al2O3 content and a certain amount of Fe2O3 (10 %), So it has the characteristics of moderate hard bottom, high toughness, high temperature resistance, and stable thermal performance. The company's black corundum abrasive has a basic grain concentration, strong cutting force, high toughness, rigidity and flexibility, good wear resistance, and high work efficiency. It is the most ideal product for grinding, polishing and sandblasting stainless steel products.
Widely used in tableware industry, electroplating industry, metal surface treatment industry, glass products industry. At present, it is widely used in fine polishing of medium hardness materials such as stainless steel kitchen utensils, lamps and motorcycle parts, auto parts, etc. Performance and effect are comparable to Japanese black corundum sand. At present, it is recognized that the only domestic alternative to black corundum polishing materials is to use imported black corundum sand materials.
Black corundum sand (also known as low-alumina corundum sand, iron sand powder) is a new type of polishing material, which is refined by electric arc furnace based on high-quality alumina. And then go through a complete scientific processing program for processing. The product has moderate hardness, high toughness, wear-resistant edges, sharp corners, strong self-sharpness, high cleanliness of polished workpieces, and its polishing performance is much higher than other similar products at home and abroad.
|Sand production line||Sand production line|
|BA-Ⅰ||# 8 ~ # 80||≥73%||9-11||≤8|
|# 90 ~ # 400||≥67%||9-11||≤8|
|BA-Ⅱ||# 16 ~ # 80||≥82%||9-11||≤8|
|# 90 ~ # 250||≥80%||9-11||≤8|
|F280 ~ F1200||≥73%||9-11||≤8|
|Granularity number||Particle size (um)||Other indicators||Features|
|16 #||1400|| Shape: Polygonal Mohs hardness: 8 |
Color: Black Packaging: 25 kg
|The product has moderate hardness, high toughness, wear-resistant sharp edges, strong self-sharpness, high cleanliness of polished workpieces, and its polishing performance is much higher than other similar products at home and abroad. It is widely used in tableware industry, electroplating industry, metal surface treatment industry, Glass products industry.|