CN100374849C - Metallurgic slag oxygen ion conductivity cell - Google Patents
Metallurgic slag oxygen ion conductivity cell Download PDFInfo
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- CN100374849C CN100374849C CNB2005101325213A CN200510132521A CN100374849C CN 100374849 C CN100374849 C CN 100374849C CN B2005101325213 A CNB2005101325213 A CN B2005101325213A CN 200510132521 A CN200510132521 A CN 200510132521A CN 100374849 C CN100374849 C CN 100374849C
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- conductance cell
- slag
- cell
- present
- platinum
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Abstract
The present invention relates to a metallurgic slag oxygen ion conductance cell for measuring the electrical conductivity of oxygen ions in the metallurgic slag at high temperatures. The present invention belongs to the field of metallurgy. The present invention is characterized in that the conductance cell stabilizes a ZrO2 ceramic material by adopting Y2O3; two side faces of the conductance cell are coated with porous platinum electrodes which form a positive and a negative electrodes of the electric conductance cell; two platinum sheets which are inserted into slag arranged in the conductance cell are used as electrodes for measuring voltage, and a fixing device for fixing the platinum sheets is arranged above the conductance cell. The present invention which can quantitatively measure the electrical conductivity, the diffusion coefficient the mobility, etc. of the oxygen ions in the metallurgic slag at the high temperatures provides dynamical parameters for deoxidizing and desulfurizing molten iron carbon and molten steel by utilizing an electrochemical method.
Description
One, technical field:
The present invention relates to a kind of metallurgic slag oxygen ion conductivity cell, be used for measuring the conductivity of metallurgical cinder oxonium ion under the high temperature, belong to field of metallurgy.
Two, background technology:
Under the high temperature, the oxide in the metallurgical cinder mainly exists with the state of kation and negative ion (being mainly oxonium ion), so the conductivity of metallurgical cinder is electronics, kation and negative ion (oxonium ion) conductivity sum.The conductance cell of measuring the metallurgical cinder conductivity only can be measured total conductivity at present.Electrode is improved, adopt ion blocking electrode can measure the electronic conductivity of slag.But also there is not to measure separately the conductance cell of oxygen ionic conductivity in the metallurgical cinder.
Three, summary of the invention:
The technical matters that the present invention solves is: oxygen ionic conductivity, coefficient of diffusion and the mobility etc. of the present invention in can quantitative measurement pyrometallurgy slag provide kinetic parameter for utilizing electrochemical process to carry out molten iron carbon, deoxygenation of liquid steel and desulfurization.
Technical scheme: conductance cell of the present invention adopts Y
2O
3Stablize ZrO
2Stupalith, on two sides of conductance cell, scribble the porous platinum gold electrode, constitute the positive and negative electrode of conductance cell, slag is housed in the conductance cell, insert the electrode of two platinum sheets in the slag, above conductance cell, be provided with the fixedly stationary installation of platinum sheet as measuring voltage.
Conductance cell material of the present invention is selected Y for use
2O
3Stablize ZrO
2, mainly contain the effect of 2 aspects: (1) as a kind of fire resistive material, it has good refractory scouring ability, can be used as the crucible that holds the high-temperature liquid state slag; (2) because it is a kind of oxygen ion conductor, only allow oxonium ion to pass through, and blocked electronics and kation passes through, constituted blocking electrode, therefore can regard oxygen ion current as by the electric current of conductance cell.Two sides are coated the porous platinum gold electrode respectively about conductance cell, and two electrodes are symmetrical, and area is A, constitute the positive and negative electrode of battery, and oxygen is finished the electrochemical redox process on the porous platinum gold electrode.In battery, insert the electrode of two platinum sheets as measuring voltage, accurate in order to guarantee two distances between the platinum sheet, above battery, utilize ceramic anchor clamps that the platinum sheet is fixed.
Four, description of drawings
Accompanying drawing is the structural representation of conductance cell of the present invention;
Five, embodiment
Porous platinum gold electrode 2 is equipped with in the present invention respectively on the two sides of conductance cell 1, constitute the positive and negative electrode of battery, slag 3 is housed in the conductance cell 1, inserts platinum sheet 4 and 5 electrodes in the slag 3, above conductance cell 1, be provided with fixedly platinum plate electrode stationary installation 6 as measuring voltage.
Two electrodes 2 of porous platinum are symmetrical.
Utilize Y
2O
3Stablize ZrO
2Superfines is a raw material, annotate the method moulding through plaster mold, burn till length under 1500 ℃ and be respectively 30～50mm, 10～30mm, 10～30mm, wall thickness is the conductance cell of 1～3mm, adopt the chloroplatinic acid decomposition method to make the porous platinum gold electrode in the left and right side, area is (10～20) mm * (10～20) mm, the slag of packing in the conductance cell, and in slag, insert two platinum sheets, the area of platinum sheet is (10～20) mm * (10～20) mm, distance L between two platinum sheets is 10～30mm, thereby has constituted metallurgical oxygen-ion conduction pond.
When applying certain voltage V at working electrode with to electrode, on negative pole, reduction reaction can take place in oxygen molecule, forms oxonium ion; On positive pole, oxonium ion can be oxidized to oxygen molecule; Under the effect of potential gradient, oxonium ion will form by negative pole to anodal directional migration, produce the flux of oxygen ions of a directional migration, thereby will have formed oxide ion conduction, because Y
2O
3Stablize ZrO
2It is a kind of oxygen ion conductor, it only allows oxonium ion to pass through, and electronics and cationic passing through have been blocked, therefore can to regard as only be the contribution of oxygen ions migrate to the electric current I in whole conductance cell, the electric potential difference U that between two contrast electrodes, measures owing to slag in the transfer resistance of oxonium ion cause.
When measuring, positive and negative electrode connects the working electrode of electrochemical interface respectively and to electrode, two platinum sheets connect two contrast electrodes respectively.Can calculate conductivity, mobility and the coefficient of diffusion of oxonium ion in the slag thus according to the galvanochemistry formula.
Utilize this conductance cell to measure CaO-SiO
2-Al
2O
3-FeO
xThe oxygen-ion conduction of slag system.
Claims (2)
1. metallurgic slag oxygen ion conductivity cell is characterized in that: conductance cell (1) employing Y
2O
3Stablize ZrO
2Stupalith, on two sides of conductance cell (1), scribble the porous platinum gold electrode (2) of symmetry, constitute the positive and negative electrode of conductance cell (1), slag (3) is housed in the conductance cell (1), insert platinum sheet (4 in the slag (3), 5) as the electrode of measuring voltage, be provided with the fixedly stationary installation (6) of platinum sheet (4,5) in the top of conductance cell (1).
2. metallurgic slag oxygen ion conductivity cell according to claim 1 is characterized in that: stationary installation (6) is the pottery folder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005101325213A CN100374849C (en) | 2005-12-26 | 2005-12-26 | Metallurgic slag oxygen ion conductivity cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005101325213A CN100374849C (en) | 2005-12-26 | 2005-12-26 | Metallurgic slag oxygen ion conductivity cell |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1808108A CN1808108A (en) | 2006-07-26 |
| CN100374849C true CN100374849C (en) | 2008-03-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005101325213A Expired - Fee Related CN100374849C (en) | 2005-12-26 | 2005-12-26 | Metallurgic slag oxygen ion conductivity cell |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3939401A (en) * | 1970-06-26 | 1976-02-17 | Beckman Instruments, Inc. | Conductivity cell electrode enclosure |
| CN85106165A (en) * | 1985-08-15 | 1987-03-04 | 株式会社日立制作所 | Survey the apparatus and method of sky-combustion ratio |
| US5630919A (en) * | 1993-08-06 | 1997-05-20 | Chang; On K. | Electrode for conductivity cells comprising high surface area metal foil |
| JPH09141418A (en) * | 1995-11-22 | 1997-06-03 | Nippon Steel Corp | Method for measuring t-fe quantity in slag layer on molten steel |
| CN1392408A (en) * | 2002-06-11 | 2003-01-22 | 武汉理工大学 | Measuring method and device for ion exchanging film conductivity |
-
2005
- 2005-12-26 CN CNB2005101325213A patent/CN100374849C/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3939401A (en) * | 1970-06-26 | 1976-02-17 | Beckman Instruments, Inc. | Conductivity cell electrode enclosure |
| CN85106165A (en) * | 1985-08-15 | 1987-03-04 | 株式会社日立制作所 | Survey the apparatus and method of sky-combustion ratio |
| US5630919A (en) * | 1993-08-06 | 1997-05-20 | Chang; On K. | Electrode for conductivity cells comprising high surface area metal foil |
| JPH09141418A (en) * | 1995-11-22 | 1997-06-03 | Nippon Steel Corp | Method for measuring t-fe quantity in slag layer on molten steel |
| CN1392408A (en) * | 2002-06-11 | 2003-01-22 | 武汉理工大学 | Measuring method and device for ion exchanging film conductivity |
Non-Patent Citations (2)
| Title |
|---|
| Wagner极化法对熔渣电子电导的研究. 鲁雄刚，丁伟中等.金属学报，第37卷第2期. 2001 * |
| 交流四探针法测定炉渣电导率的研究. 梁连科，郭仲文等.东北工学院学报，第3期. 1985 * |
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|---|---|
| CN1808108A (en) | 2006-07-26 |
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Granted publication date: 20080312 Termination date: 20101226 |