A reasonable height of electrode paste column is beneficial to improving the quality of electrode baking and reducing consumption
The height of the electrode paste column refers to the height from the upper end of the electrode conductive clip to the top of the electrode paste. The height of the paste column is related to the furnace capacity, the size of the electrode diameter, and the operating load. The larger the furnace diameter and the paste column, the higher the height. The smaller the furnace diameter and the paste column, the lower the height. The higher the operating load and the lower the load, the higher the height of the paste column and the lower the height of the paste column. Generally, it should be controlled between 3.5 and 5 meters. If the electrode paste is too high, the coarse and fine particles in the electrode paste are prone to stratification, or the paste column pressure is too high and the electrode cylinder is damaged. If the paste column is too low, due to the low paste column pressure, the filling property is poor, it is difficult to obtain a dense electrode, and the oxidation resistance is poor, resulting in excessive consumption of electrode paste. A reasonable height of the electrode paste column is beneficial to improving the quality of electrode baking and reducing consumption.
(1) Ensure the electrode paste remains clean and pure throughout all stages of procurement, transportation, loading and unloading, storage, and application. Prevent contamination from debris and dust. Crush the electrode paste to a specific particle size to prevent excessive particle size and suspended paste. After applying the paste, cover the electrode cylinder to prevent dust and debris from falling into the cylinder.
(2) Ensure that the height of the electrode paste column is controlled within the process requirements, and that a dedicated operator is assigned to add electrode paste and test the height of the paste column three times a day. Add more paste and add more frequently to ensure the stability of the height of the electrode paste column. Make daily records of the amount of paste used for each phase of the electrode, and identify the cause of any abnormalities and take appropriate measures to address them.
(3) When starting a new furnace or restarting a furnace after a long period of shutdown, due to low furnace temperature and slow increase in current and load, the initial paste column should be controlled at a low point and frequently measured and added (once every 2 hours). As the furnace temperature, current, and load gradually increase, the paste column height should be increased to normal levels.
(4) When the electrode is overburned, the paste column can be appropriately increased by 500-600mm to slow down the electrode sintering; when the electrode is underburned, the paste column can be appropriately decreased by 500-600mm to accelerate the electrode sintering; in summer, the paste column can be increased by 500-600mm compared to winter to slow down the impact of temperature on sintering; when an electrode accident occurs and the electrode is re-baked, the paste column can be appropriately decreased.
