Verfahren zur Rückgewinnung von Helium in einem Verfahren zum Herstellen optischer Fasern

摘要

A method for recovering helium from an optical fiber manufacturing process which allows recovery from most steps in the manufacturing process, including deposition and consolidation steps. The helium recovered may be refined to an intermediate level and then further refined to high purity and recycled to at least one of the steps in the manufacturing process. All recovered helium may be purified only to an intermediate level for supply to just the fiber drawing step. In a preferred embodiment recovered helium may be purified to an intermediate level and recycled to the fiber drawing step while the remainder is further refined to high purity and recycled to at least one of the other steps in the manufacturing process.