Understanding of soft breakage for electrode at SAF Furnace 2

  3. Treatment after the electrode is softly broken. In normal production, it is found that the current suddenly rises rapidly or the current drops instantly after a sudden rise but does not rise again. At the same time, when the voltage of the electrode to the furnace bottom drops to "0", it is necessary to decisively cut off the power and evacuate the operators. Afterwards, organize personnel to open the furnace door to observe the situation. When it is found that the paste is leaking, the electrode should be pressed into the furnace in time to make the broken end connected and then compact the charge to reduce the outflow of electrode paste, and lower the electrode to connect with the broken end and remove it. At the same time, find out the leakage of the electrode paste and deal with it. After inspection and repair, confirm that there is no leakage. Adjust the electrode to manual control for low-load power transmission and baking. The electrode tip and the broken end are connected under firing, thus transferring to normal production. If the broken end cannot be connected to the electrode, the paste is too thin, and the inside of the cylinder is similar to a new shell with a bottom that can be welded. It is similar to the broken end of the electrode when the furnace is newly opened, and it is roasted at a low power load. At the same time, during firing, the pressure and release method was changed to manual and the 24KW heating element was turned on, and the other two-phase electrodes were used to adjust the firing in the way of three belts and one.

 


4. Measures to prevent soft breakage

l  1. Strictly control and master the length of the electrode working end, reasonably control the pressure release time, make the pressure release speed and the sintering speed compatible, observe the firing situation of the electrode when the material surface is processed after every 24 hours In order to better control the soft and hard conditions of the electrode (if the surface of the electrode is found to be off-white, dark but not red or reddish, it means that the electrode is baked well; if the surface of the electrode is red, it means that the electrode has been burned; if the surface is black It proves that the electrode is insufficiently baked. You can also use round steel to test the electrode. If it is very hard and can rebound, it means the electrode has been overburned. If it is elastic, it means it is normal. If it is soft, it means the electrode is underburned.) If the electrode is black or yellow smoke is found It will be immediately judged that the electrode is too soft, and the heating element should be turned on for low-level firing and the pressure release time should be prolonged.

l  2. Strictly control the quality of electrode paste to ensure proper volatile matter, ash and particle size.

l  3. Strictly control the welding quality of the electrode barrel (no loopholes for trachoma). After the power is cut off, the load should not increase too fast. Observe the changes in the electrode quality. Increase the load appropriately according to the electrode baking quality. When the electrode quality is found to be soft, the load should be reduced in time (power failure), and the electrode pressure and discharge time should be strictly controlled (no more than The maximum pressure and release time of this gear) and pressure and release length (strictly control the electrode pressure and discharge overtime at 20mm).

l  4. Add electrode paste on time and according to the amount to maintain the specified height of the paste column. If the operator finds that the paste column has not changed for a long time, organize the staff to smash the paste and smash the overhead paste column firmly. Safe production with good electrode quality.

l  5. Strictly control the moisture content of the raw materials and prevent them from being too large, which will burn the insulation

l  6. Make the electrode insulation device and sealing device regularly to keep the electrode in good working condition.

 

Summary: In production, if the managers will control the production in accordance with the specified process indicators, illegal operations will be eliminated to avoid such accidents, so as to avoid personnel and equipment. damage. Therefore, taking preventive measures for electrode protection is an indispensable duty in production.

Contact info:

Email: carbongraphiteproduct@gmail.com

whatsapp: +8614738833543


Henan Rongxin Carbon Group

　　Rongxing Group is China’s leading supplier dedicated to providing its customers with the quick quotes, superior quality products, competitive prices and fastest possible deliveries of carbon metallurgical materials and solutions.

　　Its main products are graphite electrode，electrode paste, calcined petroleum coke, and refractory. The range of product line covers carbon materials, graphite materials, refractory and water treatment materials. The annual production capacity of graphite electrode, electrode paste, calcined coke and refractory reaches 50,000 tons, 200,000 tons, 250,000 tons and 20,000 tons respectively. The company’s corporate headquarters is currently located in the Zhengzhou.

　　As an experienced supplier, we now offer everything from RP, HP to UHP graphite electrode and trapezodial, oval, cylinder electrode paste in the world. Our products meet and exceed the challenges of thousands of applications, and continue to be innovated.


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