Ferrosilicon is a ferrosilicon alloy made from coke, steel scraps, and quartz (or silica) smelted in an electric furnace. It is widely used in steel industry, foundry industry and other industrial production.

Ferrosilicon commonly used grades: 65#, 75A#, 75B#, hard 75# (silicon ≥75%)
The commonly used content is shown in the following table (the conventional statement is that the AL content is less than 2.0):

Uses of ferrosilicon：

Used as deoxidizer and alloying agent in steelmaking industry. In order to obtain steel with qualified chemical composition and ensure the quality of steel, deoxidation must be carried out in the final stage of steelmaking. The chemical affinity between silicon and oxygen is very large. Therefore, ferrosilicon is a strong deoxidizer for steelmaking for precipitation and diffusion. deoxidation. Adding a certain amount of silicon to the steel can significantly improve the strength, hardness and elasticity of the steel. Therefore, it is used in the smelting of structural steel (containing 0.40-1.75% silicon), tool steel (containing SiO.30-1.8%), spring steel ( Containing SiO (40-2.8%) and transformer silicon steel (containing 2.81-4.8% silicon), ferrosilicon is also used as an alloying agent. At the same time, improving the shape of inclusions and reducing the content of gas elements in molten steel is an effective new technology for improving steel quality, reducing costs, and saving iron. It is especially suitable for the deoxidation requirements of continuous casting molten steel. Practice has proved that ferrosilicon not only meets the deoxidation requirements of steelmaking, but also has desulfurization performance and has the advantages of large specificity and strong penetrating power.

Commonly used state of ferrosilicon: 10-50mm, 50-100mm, (whether there are cracks in the appearance, whether the color is faded by hand, whether the knock is crisp, the thickness of the cross section is off-white, with pores)

Commonly used packaging of ferrosilicon: bulk or ton bag packaging.

Precautions for ferrosilicon: Ferrosilicon is afraid of tides, and the natural blocks are easy to pulverize when exposed to water, and the silicon content will decrease accordingly.

The above is what hensfate shared for you about the use of ferrosilicon, I hope it can be helpful to you！

FERROSILICON

Chemical Identifiers

• 8049-17-0

• 1408

• Dangerous When Wet
• Poison

• FSN

none

none

NFPA 704

data unavailable

General Description

A solid alloy of iron and silicon. Used to add silicon to iron and steel. Ferrosilicon is an odorless, crystalline solid metal. It is flammable and can react explosively with oxidizing materials. In the presence of moisture or water it may emit toxic and explosive fumes. It is used in magnesium processing.

Hazards

Reactivity Alerts

• Strong Reducing Agent
• Water-Reactive
• Pyrophoric

Air & Water Reactions

Flammable. Reacts with water or moisture in the air to form flammable hydrogen gas. The heat created by the reaction may be sufficient to ignite the hydrogen generated.

Fire Hazard

Special Hazards of Combustion Products: Irritating vapors and toxic gases may be formed when involved in fire. (USCG, 1999)

Health Hazard

Exposure can cause irritation of eyes, nose and throat. Toxic if inhaled or ingested. (USCG, 1999)

Reactivity Profile

Metals, such as FERROSILICON, are reducing agents and tend to react with oxidizing agents. Their reactivity is strongly influenced by their state of subdivision: in bulk they often resist chemical combination; in powdered form they may react very rapidly. Thus, as a bulk metal it is somewhat unreactive, but finely divided material may be pyrophoric. The metal reacts exothermically with compounds having active hydrogen atoms (such as acids and water) to form flammable hydrogen gas and caustic products. The reactions are less vigorous than the similar reactions of alkali metals, but the released heat can still ignite the released hydrogen. Materials in this group may react with azo/diazo compounds to form explosive products. These metals and the products of their corrosion by air and water can catalyze polymerization reactions in several classes of organic compounds; these polymerizations sometimes proceed rapidly or even explosively. Some metals in this group form explosive products with halogenated hydrocarbons.

Belongs to the Following Reactive Group(s)

Potentially Incompatible Absorbents

No information available.

Response Recommendations

Isolation and Evacuation

Excerpt from ERG Guide 139 [Substances - Water-Reactive (Emitting Flammable and Toxic Gases)]:IMMEDIATE PRECAUTIONARY MEASURE: Isolate spill or leak area in all directions for at least 50 meters (150 feet) for liquids and at least 25 meters (75 feet) for solids.SPILL: Increase the immediate precautionary measure distance, in the downwind direction, as necessary.FIRE: If tank, rail car or tank truck is involved in a fire, ISOLATE for 800 meters (1/2 mile) in all directions; also, consider initial evacuation for 800 meters (1/2 mile) in all directions. (ERG, 2020)

Firefighting

Fire Extinguishing Agents Not to Be Used: Do not use water. Dangerous when wet.

Fire Extinguishing Agents: Dry chemical, alcohol foam, or carbon dioxide. (USCG, 1999)

Non-Fire Response

Excerpt from ERG Guide 139 [Substances - Water-Reactive (Emitting Flammable and Toxic Gases)]:ELIMINATE all ignition sources (no smoking, flares, sparks or flames) from immediate area. Do not touch or walk through spilled material. Stop leak if you can do it without risk. DO NOT GET WATER on spilled substance or inside containers. Use water spray to reduce vapors or divert vapor cloud drift. Avoid allowing water runoff to contact spilled material. FOR CHLOROSILANES, use AFFF alcohol-resistant medium-expansion foam to reduce vapors.SMALL SPILL: Cover with DRY earth, DRY sand or other non-combustible material followed with plastic sheet to minimize spreading or contact with rain. Dike for later disposal; do not apply water unless directed to do so.POWDER SPILL: Cover powder spill with plastic sheet or tarp to minimize spreading and keep powder dry. DO NOT CLEAN-UP OR DISPOSE OF, EXCEPT UNDER SUPERVISION OF A SPECIALIST. (ERG, 2020)

Protective Clothing

Wear protective clothing to prevent contact with dust. Use approved respirator to protect against dust. (USCG, 1999)

DuPont Tychem® Suit Fabrics

No information available.

First Aid