Metal Silicon Of High Grade

 

( Purity)	(Si,≥%)
(Si-99.999%) 99.999% Purity	99.999
(Si-99.995%) 99.995% Purity	99.995
(Si-99.99%) 99.99% Purity	99.99
(Si-99.98%) 99.98% Purity	99.98
(Si-99.95%) 99.95% Purity	99.95
Customized Purity	99.99-99.9995(Customization Available)

 

 

The core of high grade metallurgical silicon production is carbothermal reduction + out-of-furnace refining + purification.
Raw Material Preparation: Selected high-purity silica (SiO₂), low-ash carbon reducing agents (petroleum coke and charcoal) are crushed, dried, and mixed in proportion.
Electric Arc Furnace Smelting: At a high temperature of 1800–2000℃, carbon reduces silica to produce crude silicon (purity approximately 98.5%–99%).
Out-of-Furnace Refining: Impurities such as iron, aluminum, and calcium are removed through methods such as gas blowing (oxygen/argon) and slag formation, increasing the purity to 99.8%–99.99%.
High-Purity Purification (as needed): Further purification to over 99.999% (photovoltaic/electronic grade) is achieved through processes such as chlorination distillation, hydrogen reduction, or zone melting.
Casting and Forming: The molten silicon is cast and cooled into silicon ingots, then crushed, screened, cleaned, quality inspected, and vacuum-packed.

 

 

 Photovoltaic Industry: As a direct raw material for photovoltaic-grade polycrystalline silicon (SoG-Si), after purification by the Siemens method and fluidized bed method, it is drawn into silicon rods and sliced ​​into photovoltaic silicon wafers, which are the core substrate of solar cells. It reduces carrier recombination and improves the conversion efficiency and long-term reliability of photovoltaic cells.
 Semiconductors: High-purity silicon is the basic material for power semiconductors, radio frequency chips, and logic chips, determining the device's voltage resistance, switching speed, and stability. Used in high-end fields such as infrared optical silicon and detector-grade silicon.
 Aluminum Alloy Manufacturing: As an additive to aluminum alloys, metal silicon is added to molten aluminum to prepare aluminum-silicon alloys (Al-Si). Silicon improves the fluidity, wear resistance, and corrosion resistance of aluminum alloys and reduces the coefficient of thermal expansion.

 

 

 

 

 

 

Henan Tieyao Trading Co., Ltd. is a comprehensive service provider in the metallurgical industry based in China and serving the world. It focuses on providing high-quality ferroalloys, refractory materials and supporting solutions for the international steel smelting and casting industries. As an ISO-certified high-quality supplier, the company has built a global service network with independent production bases, intelligent storage systems and deep resource integration capabilities as its core competitiveness.

 

 

 

 

 

Q1: What are the details of your after sales service?

A1: We provide the necessary technical support to all of our customers, such as material performance and heat treatment data advice.

Q2: How could I get a sample?

A2: Before we received the first order, please afford the sample cost and express fee. We will return the sample cost back to you within your first order.

Q3:It's my first time to import steel products, can you help me with it?

A3:Sure,we have agent to arrange the shipment, we will do it together with you.

Contact now

Hot Tags: metal silicon of high grade, China metal silicon of high grade manufacturers, suppliers, factory