What is silicon metal

Metallic silicon, also known as crystalline silicon or industrial silicon, is mainly used as an additive for non-ferrous alloys. Metallic silicon is a product smelted from quartz and coke in an electric furnace. The main component of silicon is about 98% (in recent years, 99.99% of Si is also contained in metallic silicon). The remaining impurities are iron and aluminum. , Calcium, etc.

Key Properties:

• Appearance: Silver-gray, brittle, crystalline solid

• Atomic Number: 14

• Melting Point: ~1,410°C

• Conductivity: Semiconductor (between metals and insulators)

• Reactivity: Reacts with oxygen and halogens but is resistant to acids

Primary Uses:

1. Aluminum Alloys (~55% of global demand): Enhances strength and castability.

2. Silicones & Polymers: Used in sealants, lubricants, and medical implants.

3. Semiconductors & Electronics: Ultra-pure silicon (99.9999%+) for chips and solar cells.

4. Chemical Industry: Produces silanes, silicones, and synthetic silica.

5. Photovoltaic (PV) Solar Cells: Refined into polysilicon for solar panels.

Production Process:

1. Raw Materials: Quartz + Carbon (reducing agent)

2. Smelting: Heated in an electric arc furnace:

   $${\text{SiO}}_2+2C\to \text{Si}+2\text{CO}$$

3. Refining: Further purification for semiconductor-grade silicon.

Where to buy or oder metallic silicon?

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