Complaint
Brown fused alumina is also called brown corundum, is formed by melting and crystallization of high-quality raw materials such as bauxite and anthracite-based coke at high temperature. The main mineral components of brown corundum are physical corundum, trigonal crystal system, and mineral impurities are: calcium silicate, anorthite, mullite (also known as mullite), titanium compounds, glass body and iron alloys.
Brown fused alumina has the characteristics of high purity, good crystallization, strong fluidity, low coefficient of linear expansion and corrosion resistance. Abrasives made of it are suitable for grinding metals with high tensile strength, such as carbon steel, general alloy steel, annealed malleable cast iron and hard bronze, etc., and can also be used as refractory materials.
| Subject | Indicator value |
| Name | Brown fused alumina |
| color | Brown |
| melting point | 2250ºC |
| Bulk density | 3.85 g/cm3 |
| Moh's hardness | 9.0 |
| Knoop hardness | 1800-2200 kg/mm2 |
| Maximum use temperature | 1850ºC |
| Size | 16#, 24#, 30#, 36#, 46#, 60#, 80#, 100#, 120#, 150#, 180#, 200#, 325# |
Purpose | Specification | Chemical composition(%) | Magnetic material ≤ | ||||
Al2O3(≥) | Fe2O3(≤) | SiO2≤ | TiO2≤ | ||||
For abrasive | F grit | 4#-80# | 95.0 | 0.3 | 1.5 | 3.0 | 0.05 |
| 90#-150# | 94.0 | 0.03 | ||||
| 180#-240# | 93.0 | 3.5 | 0.02 | |||
P grit | 8#-80# | 95.0 | 0.2 | 1.2 | 3.0 | 0.05 | |
| 100#-150# | 94.0 | 0.03 | ||||
| 180#-220# | 93.0 | 0.3 | 1.5 | 3.5 | 0.02 | |
Micro Powder | W0.5-W63 | 92.5 | 0.5 | 1.8 | 4.0 |
| |
For refractory | Size for Sand | 0-1mm | 95.5 | 0.3 | 1.5 (1.0 from Tilting Furnace) | 3.0 |
0-3mm | 95.0 | 0.3 | 1.5 | 3.0 | ||
Fine powder | 140F | 94.5 | 0.5 | 1.5 | 3.5 |
The commonly used packaging forms are as follows:
25kg/bag, 25Kg/drum, 500kg/Jumbo, lined PE water-proof and outer metal or carbon drum,
the weight and measurement clearly marked on package.
Besides, we can customize packaging according to customer needs.
Ningxia Yongruida Carbon Co., Ltd. is a manufacturer integrating production and sales. We have abundant strength and enthusiastic service attitude. We have exported to many countries, such as Europe, Asia, Africa, Australia, South America and so on, and have been well received by customers.
In addition, we have professional R&D and sales teams, and own factories and laboratories. Each batch of our product samples will be inspected by our quality inspector. After a series of tests, our products will be delivered to customers to provide them with quality assurance.
Above are the certificates related to our products. We have relevant approval certificates for product export, as well as declarations of conformity to standards.
Our products have quality inspection certificates that meet the standards, and the quality inspection certificates are certified by the China Quality Certification Center.
Q: Are you trading company or manufacturer ?
A: We are factory.So you do not have to worry about quality and price, we can guarantee the best quality and the most reasonable price.
Q: How long is your delivery time?
A: Generally it is 5-10 days if the goods are in stock. or it is 15-20 days if the goods are not in stock, it is according to quantity.
Q: Do you provide samples ? is it free or extra ?
A: Yes, we could offer the sample for free charge but do not pay the cost of freight.
Q: What's your MOQ?
A: Normally, 1000kg. But any trial order, which quantity is less than MOQ, is also warmly welcomed.
Q: What are your advantages?
A: First, high quality and best ex-factory price.
Second, strict management and quality control system.
Third, high-quality service team, providing timely service.
