DE316450C - - Google Patents
Info
- Publication number
- DE316450C DE316450C DENDAT316450D DE316450DA DE316450C DE 316450 C DE316450 C DE 316450C DE NDAT316450 D DENDAT316450 D DE NDAT316450D DE 316450D A DE316450D A DE 316450DA DE 316450 C DE316450 C DE 316450C
- Authority
- DE
- Germany
- Prior art keywords
- coating
- metal oxides
- water glass
- carbon electrodes
- mixture
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- OKTJSMMVPCPJKN-UHFFFAOYSA-N carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 4
- 229910052799 carbon Inorganic materials 0.000 claims description 3
- 239000011248 coating agent Substances 0.000 claims description 3
- 238000000576 coating method Methods 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- NTHWMYGWWRZVTN-UHFFFAOYSA-N Sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims description 2
- 229910044991 metal oxide Inorganic materials 0.000 claims description 2
- 150000004706 metal oxides Chemical class 0.000 claims description 2
- 238000000034 method Methods 0.000 claims description 2
- 235000019353 potassium silicate Nutrition 0.000 claims description 2
- 150000001875 compounds Chemical class 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 claims 1
- 239000011230 binding agent Substances 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000011253 protective coating Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B7/00—Heating by electric discharge
- H05B7/02—Details
- H05B7/06—Electrodes
- H05B7/08—Electrodes non-consumable
- H05B7/085—Electrodes non-consumable mainly consisting of carbon
Description
Die Lebensdauer der Kohlenelektroden im elektrischen Ofen ist eine kurze, die Kohle verbrennt an der Oberfläche schnell und .wird bröcklig.The life of the carbon electrodes in the electric furnace is short, the carbon burns quickly on the surface and becomes crumbly.
Um diesen Prozeß zu verlangsamen, ist es bereits bekannt, einen Schutzüberzug aus geeigneten Gemengen auf die Elektrode aufzubringen. Dies geschah aber bisher im grünen, d. h. ungeglühten Zustand der Elek-*In order to slow down this process, it is already known to use a protective coating of suitable To apply mixtures to the electrode. So far this has happened in green, d. H. unannealed condition of the elec- *
ίο trode. .ίο trode. .
Nach vorliegendem Verfahren soll nun ein Überzug auf die Kohle gebracht werden, der bei jeder Temperatur festhaftet und einen außerordentlichen Schutz bietet und auch so zusammengesetzt sein kann, daß die Leitfähigkeit erhöht wird, indem die flüssige Masse auf die aus dem Ofen kommende, noch heiße Elektrode in einfacher oder doppelter Schicht aufgetragen wird. Es bildet sich hierdurch sofort eine derartig feste Schale, daß sie der Temperatur des elektrischen Ofens ausgesetzt werden kann, ohne abzufallen. Sie kann aus einem an sich bekannten Gemenge von Metalloxyden und einem Bindemittel, zweckmäßig Wasserglas o. dgl., bestehen.According to the present method, a coating is now to be applied to the coal, which sticks at any temperature and offers extraordinary protection and so on Can be composed that the conductivity is increased by the liquid Earth on the still hot electrode coming out of the oven in single or double Layer is applied. This immediately creates such a firm shell, that it can be exposed to the temperature of the electric furnace without dropping. she can be made from a known mixture of metal oxides and a binder, expediently water glass o. The like., exist.
Claims (1)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE316450C true DE316450C (en) |
Family
ID=569157
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DENDAT316450D Active DE316450C (en) |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE316450C (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1982004371A2 (en) * | 1981-05-15 | 1982-12-09 | Max Schafferer | High performance split electrode circuit for arc furnaces |
| US4559270A (en) * | 1983-07-28 | 1985-12-17 | Union Carbide Corporation | Oxidation prohibitive coatings for carbonaceous articles |
| US4567103A (en) * | 1983-07-28 | 1986-01-28 | Union Carbide Corporation | Carbonaceous articles having oxidation prohibitive coatings thereon |
-
0
- DE DENDAT316450D patent/DE316450C/de active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1982004371A2 (en) * | 1981-05-15 | 1982-12-09 | Max Schafferer | High performance split electrode circuit for arc furnaces |
| WO1982004371A3 (en) * | 1981-05-15 | 1982-12-23 | Max Schafferer | High performance split electrode circuit for arc furnaces |
| US4559270A (en) * | 1983-07-28 | 1985-12-17 | Union Carbide Corporation | Oxidation prohibitive coatings for carbonaceous articles |
| US4567103A (en) * | 1983-07-28 | 1986-01-28 | Union Carbide Corporation | Carbonaceous articles having oxidation prohibitive coatings thereon |
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