Silicon

We are global suppliers of elemental silicon metal in broad range of forms and purities, widely used in the aluminium casting industry; steel refining; chemicals industry as well as high-technology electronics and microelectronics industries.

Silicon occurs most widely in the form of oxides and silicates including quartz, agate, amethyst, citrine, jasper, flint, opal and sand.

Both silicon and ferrosilicon are extracted from silicon dioxide (silica). Global steel production accounts for about 85% of annual consumption for ferrosilicon and about 15% being used in cast iron. Metallurgical grade silicon is commercially produced by the reaction of high purity silica feedstock with coal in an electric arc furnace using carbon electrodes, at elevated temperatures of over 3,450 0F. This process typically yields 98% pure silicon.

Berium Group has established a worldwide network of producer partners for silicon from China, Russia, Brazil, Norway and South Africa among others. Through our global access to broader silicon resources, coupled with an integrated global logistics, we can offer straightforward supply solution that is efficient and cost effective. We offer competitive and comprehensive supply for superior quality silicon worldwide. We mainly focus on chemical grade silicon, metallurgical grade silicon and solar grade silicon.

Aluminium Casting

Vast majority (about 55%) of metallurgical grade purified silicon is used worldwide in the automotive industry. Silicon is added to aluminium to improve its casting properties. Silicon also significantly improves the hardness and thus wear-resistance of aluminium.

Berium provides metallurgical grade silicon with purity of 95% to 99%, suitable for production of aluminium-silicon alloys that are mainly used in the design, development and manufacturing of motor vehicles, aircraft and other structural engineering applications.

Steel Refining

Silicon is an important constituent of the specialty electrical steel, significantly increasing its resistivity and modifying its ferromagnetic properties. Electrical steel is specialized steel which may have up to 6.5% concentration of silicon while commercial alloys commonly have silicon content up to maximum of 3.2% because higher concentration usually provoke brittleness during cold rolling. Electrical steels also called silicon steels/relay steel/lamination steel are mostly used to make large generators and electrical transformers.

As an ingredient in the production of steel, elemental silicon is added to molten cast iron as ferrosilicon or silicocalcium alloys to improve performance in casting thin sections and to prevent the formation of iron carbide (cementite) when exposed to outside air. The presence of elemental silicon in molten iron acts as a sink for oxygen, so that the steel carbon content, which must be kept within narrow limits for each type of steel, can be more closely controlled.

Ferroalloy contains averagely between 15 and 90 weight percent. Ferrosilicon alloys with silicon content of up to about 15% are made in blast furnaces lines with acid fire bricks while ferroalloys with higher silicon content are made in electric arc furnaces. Most common formulations include 15%, 45%, 75% and 90% silicon

Chemicals

Approximately 35% of metallurgical grade silicon is used annually in the manufacture of specialty chemicals. One of these important chemicals is pyrogenic silica (fumed silica) which is used in cosmetics; as an abrasive in products like toothpaste; adhesives and printing inks among others.
Silicon based polymers and compounds such as silanes and silicones are widely used as main raw materials for versatile industrial and consumer products such as glass-fiber reinforced thermoset polyesters (bulk molding compounds), high temperature greases and waxes, waterproofing treatments, mechanical seals and food additives among many others.

Semiconductor Industry

Silicon has become the most popular material to build high power semiconductors because silicon is the semiconductor that can withstand the highest temperature and electrical powers without becoming dysfunctional.

The use of silicon in the semiconductor industry demands a much higher purity compared to metallurgical grade silicon. Berium Group provides greater purity silicon which is extracted from solid silica and other silicon compounds by molten salt electrolysis. Metallurgical grade silicon undergoes chemical purification to yield high purity silicon, referred to as polycrystalline silicon or polysilicon, which is used as a raw material for photovoltaic (PV) and electronics industry.

Berium Group works closely with a wide array of leading producer partners in the world and we provide ultra-pure quality, monocrystalline and multicrystalline polysilicon in the form of granules, chips and chunks as feedstocks for versatile end products which are useful in photovoltaic applications and electronics industry.

Berium is also able to supply highest purity monocrystalline silicon as substrate used to produce silicon wafers required by the manufacturers of electronic and microelectronic components such as transistors, resistors, capacitors, inductors, diodes and insulators and conductors. These components make up analog circuits, high frequency circuits and digital integrated circuits which are used in virtually all electronics like cell phones, computers and other digital home appliances.

Contact us for all your requirements for chemical grade silicon, metallurgical grade silicon and solar grade silicon. metals@beriumgroup.com