China's Export Ferro Silicon Price On May 27

Ferrosilicon HS code?
The HS code for ferrosilicon needs to be determined based on its specific composition and purpose. According to customs classification rules, ferroalloy products are usually classified in the subdivisions of HS Chapter 72 (iron and steel), for example:

Ferrosilicon (silicon content > 55%) generally corresponds to code 7202.2100
Other ferrosilicon (silicon content ≤ 55%) may correspond to code 7202.2900

The following core information needs to be provided when declaring goods:

Brand type;
Export preferential treatment;
Composition content (percentage of elements such as iron and silicon);
Purpose (such as steelmaking deoxidizer).

It is recommended to check the latest code through the customs database or professional classification service to avoid declaration problems caused by classification adjustments.

What is the difference between Ferro silicon grain and ferrosilicon powder?

The difference between ferrosilicon granules and ferrosilicon powder is mainly reflected in the following aspects:

1. Physical form and particle size
Ferrosilicon granules: Made by crushing and screening natural ferrosilicon blocks, common particle size specifications include 0.2-1mm, 1-3mm, 3-8mm, and the shape is irregular small blocks or nearly spherical.
Ferrosilicon powder: There are two forms. The loose volume of the original silicon powder is 150-200kg/m³ (the particles are extremely fine, close to the nanometer level), and the volume of the densified silicon powder is increased to 300-700kg/m³ after compression, but the particles are still much smaller than ferrosilicon particles.
2. Production process and cost
Production process: Ferrosilicon particles only need to be crushed and screened to form; ferrosilicon powder needs to be made through multiple processes (such as grinding or smoke collection), and the technical complexity is higher.
Cost: Due to the complex process and high production energy consumption, the cost of ferrosilicon powder is significantly higher than that of ferrosilicon particles; densified silicon powder also requires additional compression equipment investment.
3. Differences in application scenarios
Ferrosilicon particles: Mainly used in the foundry industry as an inoculant or spheroidizer, and used for deoxidation and alloying elements in steelmaking.
Ferrosilicon powder: Due to its high activity, it is often used in special metallurgical reduction reactions or concrete additives (such as microsilica powder to enhance concrete performance).
4. Comparison of physical properties
Density: The density of ferrosilicon particles is about 4.2g/cm³; due to the small gap between particles, the density of ferrosilicon powder can reach 7.2-7.4g/cm³ (further increased after densification).
Transportation and use: Ferrosilicon particles can be directly packaged and transported; original silicon powder needs to be bagged and has low efficiency in long-distance transportation, and densified silicon powder improves transportation convenience through compression.
5. Subtle differences in chemical composition
Both are mainly composed of silicon and iron, but the silicon content of ferrosilicon powder is higher (such as 75 ferrosilicon powder with silicon content ≥71%), and the control of impurity elements (aluminum, calcium, etc.) is more stringent to meet the needs of high-activity reactions.