Industrial silicon and ferro silicon

Industrial silicon and ferrosilicon
Industrial silicon and ferrosilicon, commonly known as metallic silicon or silicon, strictly speaking, does not belong to the industrial silicon ferroalloy industry. It is traditionally used as an industrial silicon smelting furnace, so industrial silicon is included in the ferroalloy industry.

Industrial silicon refers to pure silicon products with a silicon powder content greater than or equal to 98.5%. Industrial silicon is used as an additive for non-ferrous alloys. Industrial silicon is also used as a harsh silicon steel alloying agent, a deoxidizer for smelting special steels and non-ferrous alloys.

Industrial silicon can be made of pulled silicon through a series of treatments, which is suitable for use in the electronics industry and used in the chemical industry to produce organic silicon, so it has a name called the magic metal, and its uses are very wide. Industrial silicon is added to aluminum, iron and other metals to improve or enhance the properties of the metal. Automobiles (including motorcycles) and aluminum have a considerable demand for silicon, so the development of the automobile industry in a region or country has a direct impact on the decline of the industrial silicon market. Industrial silicon is further purified to more than 99.999% to make polycrystalline silicon (cylinder), which is then mechanically cut into single crystal silicon and applied to a large number of electronic information industries.

For example, all types of IC cards, VCD movies, DVD movies. Ferrosilicon, ferrosilicon uses coke, steel scraps, quartz (or silica) as raw materials and is smelted in a submerged arc furnace. Silicon and oxygen can easily synthesize silicon dioxide. Therefore, ferrosilicon, which is often used as a deoxidizer in steelmaking, also releases a lot of heat as silicon dioxide is generated, and deoxidation and increasing the temperature of molten steel are also beneficial. Ferrosilicon is used as an alloy additive. It is widely used in low-alloy structural steel, alloy structural steel, spring steel, bearing steel, heat-resistant steel and electrical silicon steel, ferrosilicon alloy production and chemical industry as a reducing agent. The silicon content is 95%-99%.

Pure silicon is used in the manufacture of single crystal silicon or the preparation of non-ferrous metal alloys. Ferrosilicon is widely used in the steel industry, foundry industry and other industrial production. Ferrosilicon is an important deoxidizer in the steel industry. In steelmaking, ferrosilicon is used for precipitation deoxidation and diffusion deoxidation. Adobe iron is also used as an alloying agent in steelmaking. According to metal powder suppliers, adding a certain amount of silicon in steel can significantly increase the strength of steel, hardness and elasticity, improve the magnetic permeability of steel, and reduce the hysteresis loss of transformer steel. General steel contains silicon at 0.15%-0.35%, silicon at 0.40%, structural steel 1.75%, silicon at 0.30%, tool steel 1.80%, silicon at 0.40%, spring steel 2.80%, silicon at 3.40%, stainless steel contains silicon at 1%3%, silicon-based heat-resistant steel containing 2%3% or more. In the steel industry, the production of one ton of steel consumes about 3 5kg75% ferrosilicon. High silicon ferrosilicon and silicon alloys are used as reducing agents in the production of low carbon ferroalloys in the ferroalloy industry. Ferrosilicon added to cast iron can be used as an inoculant for ductile iron, and can prevent the formation of carbides, promote graphite precipitation and spheroidization, and improve the properties of cast iron. In addition, silicon powder can be used in the suspension stage in the mineral processing industry and in the coating of welding rods in the manufacturing industry; in the electrical industry, high-silicon ferrosilicon can be used to prepare semiconductor silicon, and in the chemical industry, it can be used to make silicone, etc.