{"id":9106,"date":"2024-06-03T07:37:29","date_gmt":"2024-06-03T05:37:29","guid":{"rendered":"https:\/\/sonagre.com\/silicio\/"},"modified":"2025-06-30T22:01:45","modified_gmt":"2025-06-30T20:01:45","slug":"silicio","status":"publish","type":"page","link":"https:\/\/sonagre.com\/en\/silicio\/","title":{"rendered":"Silicon"},"content":{"rendered":"
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Silicon<\/span><\/span><\/h2>
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SILICON<\/span><\/span><\/h2>

Silicon is the second most abundant element on Earth after oxygen.<\/p>\n

However, the transformation of silicon for use in electronics is a very complex process that is within the reach of very few manufacturers in the world. In fact, high-purity silicon production (solar and electronic grades) is sold out long before it is produced. Demand exceeds supply by 150%.<\/p>\n

Chip production cycles follow the evolution of technology according to Moore’s Law (the number of transistors in a microprocessor doubles every two years) and are therefore very short compared to any other production process. Cost variations in any element of the chain, especially logistics and energy, can have a significant economic impact and delays in the final result, leading to the loss of customers and even the closure of the complex.<\/p>\n

SONAGRE’s silicon strategy is based on complete control of the production chain, starting with the transformation of silicon ore and ending with chip manufacturing, without forgetting logistics integration and control of energy costs, which will be obtained from SONAGRE’s new renewable energy projects.<\/p>\n<\/div><\/div>

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SILICON PRODUCTION<\/span><\/span><\/h2>
Metallurgical, solar and eletronic grade silicon<\/span><\/a><\/div>
Primary polycrystalline silicon from photovoltaic panels<\/span><\/a><\/div>
Vapor Deposition Reactor (CVD)<\/span><\/a><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/section>
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Vapor Deposition Reactor (CVD)<\/span><\/span><\/h2>

The selected manufacturing process is based on obtaining gaseous halides from metallurgical silicon and the impurities it contains. The gases are fractionally distilled, and the halides from the impurities are removed. From the silicon halide, is obtained Polycrystalline silicon with a purity of up to 11N is obtained using a vapor deposition reactor (CVD\/Siemens Reactor).<\/p>\n

The Siemens process was first used to produce high-purity silicon in the 1950s in so-called CVD or bell reactors at temperatures of ~1100\u00b0C. Even today, it is the only process that guarantees 100% production of SG-Si with a purity of 11N.<\/p>\n

Its main drawback is the high energy consumption required by the process.<\/p>\n

This is the main reason why only nine factories are operating worldwide capable of achieving this level of purity. On the contrary, an undeniable advantage is that the CVD\/Siemens process does not introduce any type of pollution into the environment beyond the waste heat from the process, which, moreover, is intended to be used in a cogeneration cycle.<\/p>\n<\/div><\/div>

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LOCATION<\/span><\/a><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/section>

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The Onubensis Silicon Complex will be located on the same plot where the Primary Polycrystalline Polysilicon factory will be located, using obsolete photovoltaic panels as raw material. The plot will also house the 3nm chip manufacturing plant.<\/p>\n

The Onubensis Silicon Complex will generate a total of 1,880 direct jobs and 2,650 indirect jobs.<\/p>\n

The complex’s energy consumption is 2,445.2 GWh per year, of which 818.4 GWh will be generated by cogeneration at the complex itself and the remaining 1,638.8 GWh will be obtained from SONAGRE’s new renewable energy projects.<\/p>\n<\/div><\/div>

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