Si Metals
Industrial Silicon
High Purity Silicon
Pure Silica Powder

Si Metals

Si Metals is mainly used as an additive for non-ferrous alloys. It is a non-metallic element, gray and metallic in color, hard and brittle.

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Product Introduction

Si Metal Description

According to the content of iron, aluminum, and calcium in silicon metal block, silicon metal can be divided into different grades such as 553, 441, 411, 421, 3303, 3305, 2202, 2502, 1501, 1101, and so on.

Standard Material	%
Si	98.5% min
Al	0.4% max
Fe	0.4% max
Ca	0.1% max

Industrially, silicon blocks are usually produced by reducing silicon dioxide with carbon in an electric furnace. Chemical reaction equation: SiO22C→Si2CO The silicon thus obtained is 97~98% pure and is called silicon metal. Then by melting recrystallization and acid removal of impurities, the purity of 99.7 ~ 99.8% of the silicon metal. Silicon blocks are composed mainly of silicon and therefore have properties similar to those of silicon. There are two isomers, amorphous and crystalline. Amorphous is a grey-black powder that is a microcrystal.

Silicon blocks are industrially purified monomers of silicon, which are mainly used in the production of silicones, the preparation of high-purity semiconductor materials, and the preparation of special-purpose alloys. It is mainly used as an antioxidant in the refractory industry.

We have Silicon Metal 441, Silicon Metal 553, Silicon Metal 1101, Silicon Metal 2202, Silicon Metal 3303, Silicon Metal Powder, and other products.

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Silicon Metalloid Specification

The main industrial applications of metallic silicon are as follows:

(1) Production of silicone rubber, silicone resin, silicone oil and other silicones

It has good elasticity and high-temperature resistance and is used in the manufacture of medical supplies, high-temperature-resistant gaskets, etc. Silicone resin is used to produce insulating paint, high-temperature resistant coatings, etc. Silicone oil is an oily substance whose viscosity is less affected by temperature. It is used to produce lubricants, polishes, fluid springs, dielectric fluids, etc. It can also be processed into colorless and transparent liquids and sprayed on buildings as waterproofing agents. Object surface.
(2) Manufacturing high-purity semiconductors from silicon blocks

Nearly all modern large-scale integrated circuits are made of high-purity metallic silicon, and high-purity silicon blocks are also the main raw material for the production of optical fibers. It can be said that it has become a basic pillar industry in the information age.
(3)Alloy preparation

Silicon block aluminum alloy is an alloy containing a large amount of silicon. Silicon-aluminum alloy is a strong composite deoxidizer. It can replace pure aluminum in the steelmaking process, improve the utilization rate of deoxidizer, purify molten steel, and improve the quality of molten steel. The alloy has low density, a small thermal expansion coefficient, good casting performance, and wear resistance. The alloy castings cast with it have high impact resistance and good high-pressure density, which can greatly extend the service life. Commonly used in manufacturing aerospace vehicles and the automotive industry.

Chemical silicon production is carried out continuously. The conditions inside the furnace are not permanent either. Chemical silicon production is a process in which electrical energy is converted into thermal energy in an electric furnace, and then the thermal energy is used to directly heat materials to produce chemical reactions. Therefore, the electrical characteristics in the furnace are very important. Melting implements closed arc operation to maintain the high temperature of the furnace, improve thermal efficiency, and improve electric furnace utilization.