Oxygen sensor for aluminum killed, high silicon steel melts

Details Oxygen sensor for aluminum killed, high silicon steel melts Oxygen sensor for aluminum killed, high silicon steel melts

1991-11-22

1993-06-29

Niebling, John

Chemistry: electrical and wave energy

Apparatus

Electrolytic

204422, 204428, G01N 2726

Patent

active

052231259

ABSTRACT:
An improved expendable oxygen sensor particularly useful for measuring the dissolved oxygen content of an aluminum killed, high silicon steel bath is disclosed. The device has the typical closed end tube of solid electrolyte containing oxygen reference material, but differs from previous sensors in that a shield is provided which protects the solid electrolyte from being in contact with the bath until the solid electrolyte has had a chance to heat up more closely to the temperature of the steel. This shield, in one form, consists of a closed end tube positioned to surround the solid electrolyte and spaced from the solid electrolyte in order to prevent erroneous outputs from the sensor due to oxidation of the shield material.

REFERENCES:
patent: 4007106 (1977-02-01), Hone et al.
patent: 4342633 (1982-08-01), Cure
patent: 4717463 (1988-01-01), Clauss
Activity of Silica in Calcium-Aluminate Based Slags by Bahri Ozturk and R. J. Fruehan, Metallurgical Transactions B, pp. 746-749, vol. 18B, Dec. 1987.

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