Chemistry: electrical and wave energy – Apparatus – Electrolytic
Reexamination Certificate
2006-11-28
2006-11-28
Nguyen, Nam (Department: 1753)
Chemistry: electrical and wave energy
Apparatus
Electrolytic
C204S424000, C205S790000
Reexamination Certificate
active
07141151
ABSTRACT:
A measurement device is provided for determining the oxygen activity in molten metal or slag with a measurement head, which is arranged at one end of a carrier tube and on which an electrochemical measurement cell is arranged. The electrochemical measurement cell has a solid electrolyte tube, which is closed at one end and which contains a reference material and an electrode at its closed end. The electrode projects from the opposite end of the solid electrolyte tube. The outer surface of the solid electrolyte tube has a coating of a mixture of calcium zirconate with a fluoride. The measurement device can be used for calculating the sulfur, silicon and/or carbon content of the molten metal or slag from reaction of the sulfur with the calcium zirconate, which releases oxygen, and measurement of the resulting change in oxygen activity of the melt or slag at the outer surface of the solid electrolyte tube.
REFERENCES:
patent: 3578578 (1971-05-01), Von Krusenstierna
patent: 5332449 (1994-07-01), Verstreken et al.
patent: 6855238 (2005-02-01), Knevels et al.
patent: 26 00 103 (1977-04-01), None
patent: 26 00 103 (1978-11-01), None
patent: 28 10 134 (1979-09-01), None
patent: 31 52 318 (1986-11-01), None
patent: 41 35 510 (1994-02-01), None
patent: 195 31 661 (2002-08-01), None
patent: 0 295 112 (1988-06-01), None
patent: 0295 112 (1988-12-01), None
patent: 60-52763 (1985-03-01), None
Oktay, E. and Fruehan, R. J., “On the hot metal desulfurization”, Steel Research, vol. 66 No. 3, 1995, pp. 93-95.
Kequin Huang et al., “A new electrochemical sensor for rapid determination of silicon content in carbon saturated iron”,Solid State Ionics, vol. 53-56, pp. 24-29, (1992).
M. Iwase et al., “Some Recent Developments in Solid State Galvanic Sensor”,Proceedings of the Symposium on High Temperature Materials Chemistry, vol. 82-1, pp. 431-455, (1982).
Enver Oktay et al., “On the hot metal desulfurization”,Steel Research, vol. 66, No. 3, pp. 93-95, (1995).
Akin Gump Strauss Hauer & Feld & LLP
Fick Anthony
Heraeus Electro-Nite International N.V.
Nguyen Nam
LandOfFree
Measurement device for determining oxygen activity in molten... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Measurement device for determining oxygen activity in molten..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Measurement device for determining oxygen activity in molten... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3669386