Ofenreise one calls iron-processing industry into glass and the actual working time of a bloom or a blast furnace of the Anbrandphase up to ending the burn.

This actual working time actual although a continuous enterprise would be economically desirable - in each case to some years limits. Bloom and blast furnaces of the treatment of iron add themselves during the enterprise gradually with ashes and other arrears from the burn procedures (cinder, granulated blast-furnace slag). This leads to a less achievement and a increased pollutant output.

At expiration of each Ofenreise the furnaces of an inspection, a repair and a cleaning must be submitted, before they can be taken again in enterprise.

With Schmelzwannen of the glass processing the tough-flowing hot glass causes the wear of the tub brick lining. Chemically the corrosive atmosphere and temperature change stress and the flue gas range (regenerativ chambers). The tub journey hands the 10 years from some year with special glass tubs, over with bottle glass tubs and up to 15 years with flat glass tubs. To extend by smaller repairs increasingly tries the tub journey.

With the following main repair the old fireproof material is broken off and up-bricked afterwards again. To keep here usually from cost reasons tries as many building groups as possible. A repair including following careful Antempern (to glass-course-read) usually lasts 60 (bottle glass) or 90 days (flat glass).

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