In industry, silicon metal is usually produced by reducing silicon dioxide with carbon in an electric furnace. Chemical reaction equation: SiO2 + 2C → Si + 2CO The silicon produced in this way has a purity of 97~98%, which is called silicon metal. It is then melted and recrystallized, and impurities are removed with acid to obtain silicon metal with a purity of 99.7~99.8%.

Industrial silicon is used as an additive for non-ferrous alloys. Industrial silicon is also used as an alloying agent for silicon steel with strict requirements, and a deoxidizer for smelting special steel and non-ferrous alloys. After a series of process treatments, industrial silicon can be drawn into single crystal silicon for use in the electronics industry and in the chemical industry for the production of organic silicon, etc. Therefore, it is known as magic metal and has a wide range of uses.

silicon metal 553 441

chemical composition

Grade	Chemical composition	553	441	421	3303	2503	2202
	Si ≥	98.5%	99%	99%	99%	99%	99%
	Fe ≤	0.5%	0.4%	0.4%	0.3%	0.2%	0.2%
	Al ≤	0.5%	0.4%	0.2%	0.3%	0.5%	0.2%
	Ca ≤	0.3%	0.1%	0.1%	0.03%	0.03%	0.02%
	size	40-120 mesh,45-325 mesh, -200 mesh, -325 mesh.etc
	Note: All grades of silicon metal from our company can be used for processing, and the size can also be processed according to your requirements.
Package	25 kg/bag or 1 ton/bag

Application scenarios

Due to the difference in purity, the two are applicable to different fields:

Silicon metal 441:

Applicable to scenarios with high requirements for raw material purity, such as:
Synthesis of high-quality silicone products (such as high-end silicone rubber and silicone oil);
Production of precision aluminum alloys (such as aluminum alloys for aerospace), which can reduce the impact of impurities on alloy properties;
Primary raw materials for electronic grade silicon materials (used after further purification).

Silicon metal 553:

Applicable to industrial scenarios with high tolerance for impurities, such as:
Deoxidizer in ordinary steel smelting (reducing production costs and meeting basic deoxidation needs);
Additives for low-grade cast aluminum alloys (such as aluminum alloy profiles for construction);
Raw materials for the production of cheap silicon alloys (such as ferrosilicon and silicon manganese).

Production and cost

Silicon 441: The production process requires higher purity of raw materials (silica, reducing agent), and the introduction of impurities must be strictly controlled. The refining process is more complicated, so the cost is higher than 553.

Silicon 553: The raw material selection is more flexible, the production process is relatively simplified, the cost is lower, and the cost performance is higher.

Industrial silicon is obtained by high-temperature reaction of quartz and carbon in an electric arc furnace: SiO2+C=Si+CO2. Quartz can be divided into poor quality (such as sea sand and sandstone) and good quality (such as vein amphibole). Carbon, as a reducing agent, also can be of poor quality (such as charcoal) and good quality (such as anthracite). The differences in these raw materials determine the purity of industrial silicon.

Silicon Metal Lumps With Grade 553 441

FAQ

Q: What is Foreign Trade-Express?

A: Foreign Trade Express is a one-stop intelligent foreign trade network marketing SaaS system platform.

Q: What ferroalloy products do you provide?

A: The ferroalloys supplied include: ferrosilicon, silicon metal, ferrosilicon nitride, rare earth magnesium ferrosilicon, silicon metal powder, electrolytic manganese flakes, manganese metal ingots, high carbon silicon and other products. For detailed product information, please contact the company staff (WhatsApp: +86 187 3720 3671; Email: info@aonmetal.com) to request a product manual.

Q: How to get a quote?

A: You can contact the sales team through the company's official website (https://www.aonmetals.com/), phone (+86 187 3720 3671) or email (info@aonmetal.com) to provide demand information to obtain a quote.

Q: What services does the company provide?

A: The company provides customized products, technical consulting, logistics services and after-sales support.

Q: Do you provide samples?
A: The company provides sample services. Please contact the company's customer service for specific details.

Q: How to choose the right ferroalloy product?

A: The selection of suitable ferroalloys should consider the required chemical composition, physical properties, cost and application areas. It is recommended to consult professionals.

Q: What are the quality standards of ferroalloys?

A: The quality standards of ferroalloys vary from country to country and industry to industry, and usually include composition analysis, physical property testing and appearance inspection.

Q: Can you provide product parameter and size customization services?

A: Yes, we provide product customization services.For example, products require low phosphorus, low aluminum, low carbon, high carbon, etc. and 0-3mm 1-10mm 10-50mm 10-100mm.etc

Q: What is the term of payment?

A: T/T,L/C

Q: What is your MOQ?

A: 25 Ton or a container

Q: Advantages of the business team?

A: Talent is an important factor in company development. All sales staff of our company have undergone strict screening and professional training. They are familiar with the professional knowledge and business processes of domestic and international trade, and have keen perception and insight into the ferroalloy market. We can provide you with the most professional industry evaluation and industry dynamics analysis.

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