| 摘要 |
<p>The invention relates to a method and an arrangement for measurement of electrode paste in an electrode column of an electric arc furnace. The electrode column (10) comprises a steel casing (11) surrounding the electrode paste and said electrode column (10) is provided with a contact shoe ring (12) to conduct electric current to the electrode. The electrode column (10) is filled with electrode paste by introducing said paste from above into the steel casing (11). The electrode paste evolves through different phases, from raw paste in the upper part of the steel casing (11) to melted paste and further to baked paste (18) in the lower part of the electrode column (10). In the invention a plurality of laser devices is provided on the top of the electrode column (10). The level of the raw paste (16) corresponding to the height of the paste cylinder in the steel casing (11) is determined with the laser beam transmitted by a first laser device. The level of the molten paste (17) in the steel casing (11)is determined with the laser beam transmitted by a second laser device. The data received from the laser devices is used for calculation of the distances of the levels of the raw paste (16) and molten paste (17) from the contact shoe ring(12).</p> |
