Product Description
Silicon carbide has four main application areas, namely: functional ceramics, advanced refractory materials, abrasives, and metallurgical raw materials. While silicon carbide rough materials can be supplied in large quantities and are not considered high-tech products, the application of nano-scale silicon carbide powder boasts extremely high technical content. However, achieving economies of scale for this advanced material is unlikely in the short term.
At present, in China's foundry industry, the use of induction furnace as cast iron smelting equipment foundries are increasing, however, in the smelting process of silicon carbide is very few, can make it play a full role less, our company research modified silicon carbide can improve the metallurgical quality of molten iron, reduce the oxidation of molten iron. In the process of smelting cast iron with intermediate frequency furnace, the accompanying problems such as poor nodularization, less graphite balls, large use of nodularizing agent, more supercooled graphite in gray iron castings, A-type graphite can not meet customer requirements, and processing difficulties follow. This product can effectively improve the metallurgical quality of molten iron, thereby reducing the above problems.
Features:
1. Increase the graphite nucleation core and enhance the graphite nucleation ability. Reduce the subcooling degree of molten iron and reduce the tendency of castings to white.
2. Good deoxidation effect, purify molten iron.
3. Extend the service life of the furnace lining.
4. Reduce the supercooled graphite in gray cast iron and promote the generation of A-type graphite.
5. Adding to ductile iron production can increase the number of graphite balls, improve the nodularization rate, make the graphite balls more round and small, and reduce the amount of nodularizing agent.
The modern method of manufacturing silicon carbide for the abrasives, metallurgical, and refractories industries is basically the same as that developed by Acheson. A mixture of pure silica sand and carbon in the form of finely ground coke is built up around a carbon conductor within a brick electrical resistance-type furnace. Electric current is passed through the conductor, bringing about a chemical reaction in which the carbon in the coke and silicon in the sand combine to form SiC and carbon monoxide gas. A furnace run can last several days, during which temperatures vary from 2,200° to 2,700° C (4,000° to 4,900° F) in the core to about 1,400° C (2,500° F) at the outer edge. The energy consumption exceeds 100,000 kilowatt-hours per run. At the completion of the run, the product consists of a core of green to black SiC crystals loosely knitted together, surrounded by partially or entirely unconverted raw material. The lump aggregate is crushed, ground, and screened into various sizes appropriate to the end use.
| Physic Properties |
| Color |
Green |
| Crystal form |
Polygon |
| Mohs hardness |
9.2-9.6 |
| Micro hardness |
2840~3320kg/mm² |
| Melting point |
1723 |
| Maximum operating temperature |
1600 |
| True density |
3.21g/cm³ |
| Bulk density |
2.30g/cm³ |
Our Advantages
FAQ
1. Are you an agent or manufacturer?
We are product manufacturers.
Our company is located in Tianshui City, Gansu Province, China.
2. How does the company guarantee quality?
The sample is always pre-produced before mass production, and the sample is subjected to precise data testing.
3. What can you buy from us?
98% and below black silicon carbide powder or particle size sand
4. Is the price negotiable?
We will provide you with a competitive price quote. For bulk wholesale customers, we will have a certain discount.
5. What services can we provide?
Accepted delivery terms: FOB, EXW, etc
Accepted payment currency: USD, EUR, RMB, etc.
Accepted payment methods: T/T, L/C, D/P D/A, MoneyGram, credit card, PayPal, Western Union;
Spoken languages: English, Chinese.
6. Can you send me a sample? Is it free?
Yes, we would be happy to send you samples.
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