CA2153932A1 - Method for Refining of Silicon - Google Patents

Method for Refining of Silicon

Info

Publication number
CA2153932A1
CA2153932A1 CA2153932A CA2153932A CA2153932A1 CA 2153932 A1 CA2153932 A1 CA 2153932A1 CA 2153932 A CA2153932 A CA 2153932A CA 2153932 A CA2153932 A CA 2153932A CA 2153932 A1 CA2153932 A1 CA 2153932A1
Authority
CA
Canada
Prior art keywords
molten silicon
slag
silicon
continuously
refining
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CA2153932A
Other languages
French (fr)
Other versions
CA2153932C (en
Inventor
Anders Schei
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Elkem ASA
Original Assignee
Elkem ASA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Elkem ASA filed Critical Elkem ASA
Priority to CA002153932A priority Critical patent/CA2153932C/en
Publication of CA2153932A1 publication Critical patent/CA2153932A1/en
Application granted granted Critical
Publication of CA2153932C publication Critical patent/CA2153932C/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B33/00—Silicon; Compounds thereof
    • C01B33/02—Silicon
    • C01B33/037—Purification

Abstract

The present invention relates to a process for removing impurities from molten silicon by treatment of molten silicon contained in a vessel with a slag having the capability of removing the impurities, particularly boron from molten silicon wherein slag is continuously or substantially continuously added to the molten silicon and that the slag is continuously or substantially continuously inactivated or removed from the silicon melt as soon as equilibrium between the slag and molten silicon is reached with respect to the impurity elements or element to be removed.
CA002153932A 1995-07-14 1995-07-14 Method for refining of silicon Expired - Lifetime CA2153932C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CA002153932A CA2153932C (en) 1995-07-14 1995-07-14 Method for refining of silicon

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA002153932A CA2153932C (en) 1995-07-14 1995-07-14 Method for refining of silicon

Publications (2)

Publication Number Publication Date
CA2153932A1 true CA2153932A1 (en) 1997-01-15
CA2153932C CA2153932C (en) 1999-10-12

Family

ID=4156228

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002153932A Expired - Lifetime CA2153932C (en) 1995-07-14 1995-07-14 Method for refining of silicon

Country Status (1)

Country Link
CA (1) CA2153932C (en)

Also Published As

Publication number Publication date
CA2153932C (en) 1999-10-12

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Legal Events

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Effective date: 20150714