01_COMPANY
01_COMPANY
»
02_SOLAR SILICON
02_SOLAR SILICON
»
03_NEWS+DATES
03_NEWS+DATES
»
04_INVESTOR RELATIONS
04_INVESTOR RELATIONS
»
05_PRESS
05_PRESS
»
MARKET
MARKET
PROCESS
PROCESS
PRODUCTION IN SLOVENIA
PRODUCTION IN SLOVENIA
IMAGE GALERY RUSE
IMAGE GALERY RUSE
FILM ARC FURNACE M6 RUSE
FILM ARC FURNACE M6 RUSE
PROCESS
MATERIAL
MATERIAL
COMPANY
COMPANY
EQUITY STORY
EQUITY STORY
COMPANY STRUCTURE
COMPANY STRUCTURE
MANAGEMENT
MANAGEMENT
SOLAR SILICON
SOLAR SILICON
MARKET
MARKET
PROCEDURE
PROCEDURE
PRODUCTION RUSE
PRODUCTION RUSE
PICTURE GALLERY RUSE
PICTURE GALLERY RUSE
FILM ARC FURNACE M6
FILM ARC FURNACE M6
01_
02_
NEWS + DATES
NEWS + DATES
NEWS
NEWS
IMPORTANT DATES
IMPORTANT DATES
03_
INVESTOR RELATIONS
INVESTOR RELATIONS
OVERVIEW
OVERVIEW
FINANCIAL REPORTS
FINANCIAL REPORTS
PRESENTATIONS
PRESENTATIONS
ANNUAL GENERAL MEETING
ANNUAL GENERAL MEETING
FAQ
FAQ
04_
PRESS
PRESS
PRESS RELEASES
PRESS RELEASES
PRESS REVIEW
PRESS REVIEW
PRESS CONTACT
PRESS CONTACT
05_
IR-CONTACT
IR-CONTACT
Imprint | © 2007 Solarvalue AG
Imprint | © 2008 Solarvalue AG
PROFILES
PROFILES
THE SOLARVALUE PROCESS
The process is based on a production process that was successfully tested by Solarex in the 80s and developed further by us.
Phase I
In the first step, we will use high purity carbon to reduce high purity quartz fragments to metallurgical silicon in arc furnaces at a temperature of 2,200 degrees Celsius, achieving a purity of approximately 99.9+%.
Phase II
Process II consists of several purification stages, including repeated smelting in induction furnaces. Directional solidification is used to remove heavy metals and most of the phosphorus. Careful control of the solidification process allows many impurities, such as heavy metals, and most of the phosphorus to be gathered and extruded during the transition from liquid to solid state. In another smelting phase, the addition of a special slag binds further impurities, including boron, carbon and oxygen.
Phase III
Process III involves the use of a special casting furnace that has an optimised temperature profile for directional solidification. This finally reduces the boron and phosphorus content to a level below the limits for solar grade silicon. At the end of the process, the overall purity is 99.999 %. The boron and phosphorus content is considerably lower still.
The process is based on a production process that was successfully tested by Solarex in the 80s and developed further by us.
Phase I
In the first step, we will use high purity carbon to reduce high purity quartz fragments to metallurgical silicon in arc furnaces at a temperature of 2,200 degrees Celsius, achieving a purity of approximately 99.9+%.
Phase II
Process II consists of several purification stages, including repeated smelting in induction furnaces. Directional solidification is used to remove heavy metals and most of the phosphorus. Careful control of the solidification process allows many impurities, such as heavy metals, and most of the phosphorus to be gathered and extruded during the transition from liquid to solid state. In another smelting phase, the addition of a special slag binds further impurities, including boron, carbon and oxygen.
Phase III
Process III involves the use of a special casting furnace that has an optimised temperature profile for directional solidification. This finally reduces the boron and phosphorus content to a level below the limits for solar grade silicon. At the end of the process, the overall purity is 99.999 %. The boron and phosphorus content is considerably lower still.
GERMAN
SLOVENIAN
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