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Black corundum

[Product Specifications]: BA-Ⅰ, BA-Ⅱ

[Production capacity]: 20,000 tons

[Application range]: The most ideal product mainly used for grinding, polishing and sandblasting stainless steel products.

【product description】:

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.
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18603798888 Sales Hotline: 18603798888

咨询产品报价 疑难解答

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.

Application range

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.

Production Process

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.

Smelting furnace Smelting
Sand production line Sand production line
package

Technical Parameters

Physical and chemical indicators of Ruishi black alumina
project specification Al2O3 Fe2O3 SiO2
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.
twenty four# 850
30 # 710
46 # 425
60 # 300
80 # 212
100 # 150
120 # 125
150 # 106
180 # 90
220 # 75
280 # 50
320 # 40

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