Bulk Silicon Metal

 

 

 The core value of metallurgical silicon lies in its "tiered application"

Low-purity grades leverage their superior deoxidizing properties to serve as "quality regulators" for specialty steels and high-temperature alloys, precisely reducing oxygen content in alloys to enhance corrosion resistance and high-temperature performance. Medium-to-high purity grades serve as the "source engine" for the organosilicon industry chain. Through processes like chloromethylation, they yield products such as silicone rubber, silicone oil, and silicone resin, widely used in high-end applications like aerospace seals, electronic encapsulation compounds, and medical-grade consumables. Ultra-high purity grades serve as the "vital lifeline" for the semiconductor and new energy industries. Monocrystalline silicon/polycrystalline silicon produced through zone melting purification act as foundational materials for wafers in chip manufacturing and core components for high-efficiency solar cells and silicon-carbon anodes in lithium batteries. Each order-of-magnitude increase in purity drives breakthrough performance enhancements in end products.

First of all, there must be raw material quartz stone, which contains a large amount of silicon dioxide. The quartz stone was crushed into small pieces, just like pebbles. These small pieces of quartz stone are the main raw materials for producing metallic silicon.
Then, put these quartz stones and carbonaceous reducing agents, such as coal, permanent carbon and so on, into the electric furnace together.
After being heated in an electric furnace, quartz stone and carbonaceous reducing agents will undergo a chemical reaction under the effect of high temperature. Carbon will take away the oxygen in quartz stone, thus turning silicon dioxide into silicon and carbon monoxide. Silicon is the metallic silicon we want. As for carbon monoxide, it will escape from the electric furnace.
This reaction process is not easy and requires maintaining a high temperature all the time. Moreover, it is necessary to control various conditions well, such as the degree, the proportion of raw materials and so on. If the temperature is not high enough, the reaction will not proceed well and good metallic silicon cannot be produced. If the proportion of raw materials is incorrect, it will also affect the quality of the product.
After the reaction is complete, molten metallic silicon will be obtained at the bottom of the electric furnace. At this point, pour out the molten metallic silicon and place it in the mold to cool down. When it cools down, it turns into pieces of metallic silicon.
Finally, some treatments still need to be carried out on these metals to retain high-quality metallic silicon. In this way, we have obtained metallic silicon that can be used in various places.

Unlike conventionally perceived base materials, the core value of metallurgical silicon lies in its "tiered application": Low-purity grades (98%-99%) leverage their superior deoxidizing properties to serve as "quality regulators" for specialty steels and high-temperature alloys, precisely reducing oxygen content in alloys to enhance corrosion resistance and high-temperature performance. Medium-to-high purity grades (99.5%-99.9%) serve as the "source engine" for the organosilicon industry chain. Through processes like chloromethylation, they yield products such as silicone rubber, silicone oil, and silicone resin, widely used in high-end applications like aerospace seals, electronic encapsulation compounds, and medical-grade consumables. Ultra-high purity grades (99.999% and above) serve as the "vital lifeline" for the semiconductor and new energy industries. Monocrystalline silicon/polycrystalline silicon produced through zone melting purification act as foundational materials for wafers in chip manufacturing and core components for high-efficiency solar cells and silicon-carbon anodes in lithium batteries. Each order-of-magnitude increase in purity drives breakthrough performance enhancements in end products.

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