Aluminum Ingot with National Standard

Metallic silicon 96 (Si ≥ 96%) is a medium purity industrial silicon mainly used in metallurgy, chemical industry and other fields that require high silicon content but do not require ultra-high purity. Its number usually indicates the minimum content of silicon (such as "96" representing Si ≥ 96%), which is different from higher purity metallic silicon (such as Si ≥ 98%, 99%, etc.).

(1) Aluminum alloy additive

Function: Improve the strength and heat resistance of aluminum (such as car wheels and engine components).

Addition ratio: usually 5%~15%.

Advantages: Si ≥ 96% can meet most aluminum alloy needs, with high cost-effectiveness.

(2) Production of silicon-based alloys

Ferrosilicon (FeSi): Used as a deoxidizer in steelmaking (Si ≥ 96% silicon can reduce production costs).

Calcium Silicon Alloy (CaSi): Used for desulfurization and deoxidation in steel smelting.

(3) Organic silicon chemical raw materials

Further processing: Metal silicon 96 can be chlorinated to produce trichlorosilane (SiHCl ∝), which is used for synthesizing silicone oil, silicone rubber, etc. (impurities such as Ca and Ti need to be controlled).

(4) Solar grade polycrystalline silicon (primary raw material)

Purification: Si96 is purified to solar grade (6N, 99.9999%) by metallurgical or Siemens methods, but with lower efficiency than high-purity silicon (such as Si ≥ 99%).

(5) Other uses

Refractory material: combined with silicon carbide (SiC) to manufacture high-temperature kiln furniture.

Semiconductor auxiliary materials: low-end electronic component packaging.